Download Motorola pro7100 Service manual
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CDM™ and PRO SERIES™ Mobile Radios contact contact PRO7100 control control C A, Motorola, Professional Radio, CDM Series and CDM Model numbers, PRO Series and PRO Series Model numbers are trademarks of Motorola. © 1999 Motorola, Inc. All rights reserved. Printed in USA. *6881091C63* 68P81091C63-O Detailed Service Manual Professional Radio CDM™ and PRO SERIES™ As Dedicated As You Are Mobile Radios Computer Software Copyrights The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant, either directly or by implication, estoppel or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty-free license to use that arises by operation of law in the sale of a product. Safety-1 SAFETY INFORMATION Important information on safe and efficient operation is included in this manual. Read this information before using your radio. SAFE AND EFFICIENT OPERATION OF MOTOROLA TWO-WAY RADIOS This document provides information and instructions for the safe and efficient operation of Motorola Portable and Mobile Two-Way Radios. The information provided in this document supercedes the general safety information contained in user guides published prior to 1st. January 1998. For information regarding radio use in hazardous areas, please refer to the Factory Mutual (FM) approval manual supplement or Instruction Card which is included with radio models that offer this capability. EXPOSURE TO RADIO FREQUENCY ENERGY Your Motorola Two-Way Radio, which generates and radiates radio frequency (RF) electromagnetic energy (EME) is designed to comply with the following National and International Standards and Guidelines regarding exposure of human beings to radio frequency electromagnetic energy: l l l l l Federal Communications Commission Report and Order No. FCC 96-326 (August 1996) American National Standards Institute (C95.1 - 1992) National Council on Radiation Protection and Measurements (NCRP-1986) International Commission on Non-Ionizing Radiation Protection (ICNRP- 1986) European Committee for Electrotechnical Standardisation (CENELEC): ENV 50166-1 1995 E Human exposure to electromagnetic fields Low frequency (0 Hz to 10 kHz) ENV 50166-2 1995 E Human exposure to electromagnetic fields High frequency (10 kHz to 300 GHz) Proceedings of SC211/B 1996 “Safety Considerations for Human Exposure to EMFs from Mobile Telecommunication Equipment (MTE) in the Frequency Range 30MHz - 6 GHz.” (EMF - Electro-Magnetic Fields) To assure optimal radio performance and to ensure that your exposure to radio frequency electromagnetic energy is within the guidelines in the above standards, always adhere to the following procedures: PORTABLE RADIO OPERATION AND EME EXPOSURE l l When transmitting with a portable radio, hold radio in a vertical position with the microphone 2.5 to 5 centimeters (one or two inches) away from the mouth. Keep antenna at least 2.5 centimeters (one inch) from your head or body when transmitting. If you wear a portable Two-Way radio on your body, ensure that the antenna is at least 2.5 centimeters (one inch) from the body when transmitting. MAN WITH RADIO ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY NOTE Nearly every electronic device is susceptible to electromagnetic interference (EMI) if inade- quately shielded, designed or otherwise configured for electromagnetic compatibility l l To avoid electromagnetic interference and/or compatibility conflicts, turn off your radio in any facility where posted notices instruct you to do so. Hospital or health facilities may be using equipment that is sensitive to external RF energy. When instructed to do so, turn off your radio when on board an aircraft. Any use of a radio must be in accordance with airline regulations or crew instructions. Safety-2 OPERATIONAL WARNINGS Vehicles with an air bag l ! WARNING Do not place a portable radio in the area over an air bag or in the air bag deployment area. Air bags inflate with great force. If a portable radio is placed in the air bag deployment area and the air bag inflates, the radio may be propelled with great force and cause serious injury to occupants of vehicle. Potentially explosive atmospheres l Turn off your Two-Way radio when you are in any area with a potentially explosive atmosphere, unless it is a radio type especially qualified for use in such areas (e.g. FM or Cenelec approved). Sparks in a potentially explosive atmosphere can cause an explosion or fire resulting in bodily injury or even death. Batteries l Do not replace or recharge batteries in a potentially explosive atmosphere. Contact sparking may occur while installing or removing batteries and cause an explosion. Blasting caps and areas l To avoid possible interference with blasting operations, turn off your radio when you are near electrical blasting caps. In a “blasting area” or in areas posted “turn off two-way radio”, obey all signs and instructions. NOTE The areas with potentially explosive atmospheres referred to above include fuelling areas such as: below decks on boats; fuel or chemical transfer or storage facilities; areas where the air contains chemicals or particles, such as grain, dust or metal powders; and any other area where you would normally be advised to turn off your vehicle engine. Areas with potentially explosive atmospheres are often but not always posted. OPERATIONAL CAUTIONS Damaged antennas l ! Caution Do not use any portable Two-Way radio that has a damaged antenna. If a damaged antenna comes into contact with your skin, a minor burn can result. Batteries l All batteries can cause property damage and/or bodily injury such as burns if a conductive material such as jewelery, keys or beaded chains touch exposed terminals. The conductive material may complete an electrical circuit (short circuit) and become quite hot. Exercise care in handling any charged battery, particularly when placing it inside a pocket, purse or other container with metal objects. INTRINSICALLY SAFE RADIO INFORMATION FMRC Approved Equipment Anyone intending to use a radio in a location where hazardous concentrations of flammable material exist (hazardous atmosphere) is advised to become familiar with the subject of intrinsic safety and with the National Electric Code NFPA 70 (National Fire Protection Association) Article 500 (hazardous [classified] locations). An Approval Guide, issued by Factory Mutual Research Corporation (FMRC), lists manufacturers and the products approved by FMRC for use in such locations. FMRC has also issued a voluntary approval standard for repair service (“Class Number 3605”). FMRC Approval labels are attached to the radio to identify the unit as being FM Approved for specified hazardous atmospheres. This label specifies the hazardous Class/Division/Group along with the part number of the battery that must be used. Depending on the design of the portable unit, Safety-3 this FM label can be found on the back of the radio housing or the bottom of the radio housing.Their Approval mark is shown below. FM APPROVED ! WARNING WARNING: Do not operate radio communications equipment in a hazardous atmosphere unless it is a type especially qualified (e.g. FMRC Approved) for such use. An explosion or fire may result. WARNING: Do not operate the FMRC Approved Product in a hazardous atmosphere if it has been physically damaged (e.g. cracked housing). An explosion or fire may result. WARNING: Do not replace or charge batteries in a hazardous atmosphere. Contact sparking may occur while installing or removing batteries and cause an explosion or fire. WARNING: Do not replace or change accessories in a hazardous atmosphere. Contact sparking may occur while installing or removing accessories and cause an explosion or fire. WARNING: Do not operate the FMRC Approved Product unit in a hazardous location with the accessory contacts exposed. Keep the connector cover in place when accessories are not used. WARNING: Turn radio off before removing or installing a battery or accessory. WARNING: Do not disassemble the FMRC Approved Product unit in any way that exposes the internal electrical circuits of the unit. Radios must ship from the Motorola manufacturing facility with the hazardous atmosphere capability and FM Approval labeling. Radios will not be “upgraded” to this capability and labeled in the field. A modification changes the unit’s hardware from its original design configuration. Modifications can only be done by the original product manufacturer at one of its FMRC audited manufacturing facilities. ! WARNING WARNING: Failure to use an FMRC Approved Product unit with an FMRC Approved battery or FMRC Approved accessories specifically approved for that product may result in the dangerously unsafe condition of an unapproved radio combination being used in a hazardous location. Unauthorized or incorrect modification of an FMRC Approved Product unit will negate the Approval rating of the product. Repair of FMRC Approved Products REPAIRS FOR MOTOROLA FMRC APPROVED PRODUCTS ARE THE RESPONSIBILITY OF THE USER. You should not repair or relabel any Motorola manufactured communication equipment bearing the FMRC Approval label (“FMRC Approved Product”) unless you are familiar with the current FMRC Approval standard for repairs and service (“Class Number 3605). You may want to consider using a repair facility that operates under 3605 repair service approval. ! WARNING: Incorrect repair or relabeling of any FMRC Approved Product unit could adversely affect the Approval rating of the unit. WARNING WARNING: Use of a radio that is not intrinsically safe in a hazardous atmosphere could result in serious injury or death. Safety-4 FMRC’s Approval Standard Class Number 3605 is subject to change at any time without notice to you, so you may want to obtain a current copy of 3605 from FMRC. Per the December, 1994 publication of 3605, some key definitions and service requirements are as follows: Repair A repair constitutes something done internally to the unit that would bring it back to its original condition Approved by FMRC. A repair should be done in an FMRC Approved facility. Items not considered as repairs are those in which an action is performed on a unit which does not require the outer casing of the unit to be opened in a manner which exposes the internal electrical circuits of the unit. You do not have to be an FMRC Approved Repair Facility to perform these actions. Relabeling The repair facility shall have a method by which the replacement of FMRC Approval labels are controlled to ensure that any relabeling is limited to units that were originally shipped from the Manufacturer with an FM Approval label in place. FMRC Approval labels shall not be stocked by the repair facility. An FMRC Approval label shall be ordered from the original manufacturer as needed to repair a specific unit. Replacement labels may be obtained and applied by the repair facility providing satisfactory evidence that the unit being relabeled was originally an FMRC Approved unit. Verification may include, but is not limited to: a unit with a damaged Approval label, a unit with a defective housing displaying an Approval label, or a customer invoice indicating the serial number of the unit and purchase of an FMRC Approved model. Do Not Substitute Options or Accessories The Motorola communications equipment certified by Factory Mutual is tested as a system and consists of the FM Approved portable, FM Approved battery, and FM Approved accessories or options, or both. This Approved portable and battery combination must be strictly observed. There must be no substitution of items, even if the substitute has been previously Approved with a different Motorola communications equipment unit. Approved configurations are listed in the FM Approval guide published by FMRC, or in the product FM Supplement. This FM Supplement is shipped with FM Approved radio and battery combination from the manufacturer. The Approval guide, or the Approval standard Class Number 3605 document for repairs and service, can be ordered directly through Factory Mutual Research Corporation located in Norwood, Massachusetts. i TABLE OF CONTENTS Chapter 1 Introduction 1.1 Scope of Manual ........................................................................................................................... 1-1 1.2 Warranty and Service Support ...................................................................................................... 1-1 1.2.1 Warranty Period ..................................................................................................................... 1-1 1.2.2 Return Instructions ................................................................................................................. 1-1 1.2.3 After Warranty Period ............................................................................................................ 1-1 1.3 Related Documents ...................................................................................................................... 1-2 1.4 Technical Support ......................................................................................................................... 1-2 1.5 Warranty and Repairs.................................................................................................................... 1-2 1.6 Radio Model Chart and Specifications .......................................................................................... 1-4 1.7 Radio Model Information ............................................................................................................... 1-4 Chapter 2 Theory of Operation 2.1 Overview....................................................................................................................................... 2-1 2.2 Controller Section ......................................................................................................................... 2-1 2.2.1 Radio Power Distribution ....................................................................................................... 2-2 2.2.2 Automatic On/Off ................................................................................................................... 2-3 2.2.3 Emergency............................................................................................................................. 2-4 2.2.4 Mechanical On/Off ................................................................................................................. 2-4 2.2.5 Ignition ................................................................................................................................... 2-4 2.2.6 Microprocessor Clock Synthesizer......................................................................................... 2-5 2.2.7 Serial Peripheral Interface (SPI) ............................................................................................ 2-5 2.2.8 SBEP Serial Interface ............................................................................................................ 2-6 2.2.9 General Purpose Input/Output ............................................................................................... 2-6 2.2.10 Normal Microprocessor Operation ......................................................................................... 2-7 2.2.11 Static Random Access Memory (SRAM) ............................................................................... 2-8 2.3 Controller Board Audio and Signalling Circuits ............................................................................. 2-8 2.3.1 Audio Signalling Filter IC with Compander (ASFIC CMP) ..................................................... 2-8 2.3.2 Transmit Audio Circuits.......................................................................................................... 2-9 2.3.3 Microphone Input Path ........................................................................................................... 2-9 2.3.3.1 PTT Sensing and TX Audio Processing ........................................................................ 2-10 2.3.3.2 TX Secure Audio (optional) ........................................................................................... 2-10 2.3.3.3 Option Board Transmit Audio ........................................................................................ 2-10 2.3.4 Transmit Signalling Circuits ................................................................................................. 2-11 2.3.4.1 Sub-Audible Data (PL/DPL) .......................................................................................... 2-11 2.3.4.2 High Speed Data ........................................................................................................... 2-12 2.3.4.3 Dual Tone Multiple Frequency (DTMF) Data ................................................................ 2-12 2.3.5 Receive Audio Circuits......................................................................................................... 2-13 2.3.5.1 Squelch Detect .............................................................................................................. 2-13 2.3.5.2 Audio Processing and Digital Volume Control ............................................................... 2-14 2.3.5.3 Audio Amplification Speaker (+) Speaker (-) ................................................................. 2-14 2.3.5.4 Handset Audio ............................................................................................................... 2-15 2.3.5.5 Filtered Audio and Flat Audio ........................................................................................ 2-15 2.3.5.6 RX Secure Audio (Optional) .......................................................................................... 2-15 ii 2.3.5.7 Option Board Receive Audio 2-15 2.3.6 Receive Signalling Circuits................................................................................................... 2-16 2.3.6.1 Sub-audible Data (PL/DPL) and High Speed Data Decoder ........................................ 2-16 2.3.6.2 Alert Tone Circuits ......................................................................................................... 2-16 2.3.6.3 Voice Storage (Optional) .............................................................................................. 2-17 2.4 UHF (403-470 MHz) Receiver Front-End ................................................................................... 2-17 2.4.1 Front-End Band-Pass Filters & Pre-Amplifier....................................................................... 2-19 2.4.2 First Mixer and 1st Intermediate Frequency (IF) ................................................................... 2-19 2.4.3 2nd Intermediate Frequency (IF) and Receiver Back-End................................................... 2-19 2.5 Transmitter Power Amplifier (PA) 40 W ...................................................................................... 2-20 2.5.1 Power Controlled Stage ....................................................................................................... 2-20 2.5.2 Pre-Driver Stage .................................................................................................................. 2-20 2.5.3 Driver Stage ......................................................................................................................... 2-21 2.5.4 Final Stage ........................................................................................................................... 2-21 2.5.5 Bi-Directional Coupler .......................................................................................................... 2-21 2.5.6 Antenna Switch .................................................................................................................... 2-21 2.5.7 Harmonic Filter...................................................................................................................... 2-21 2.5.8 Power Control ....................................................................................................................... 2-21 2.6 Frequency Synthesis .................................................................................................................. 2-22 2.6.1 Reference Oscillator............................................................................................................. 2-22 2.6.2 Fractional-N Synthesizer...................................................................................................... 2-22 2.6.3 Voltage Controlled Oscillator (VCO) .................................................................................... 2-23 2.6.4 Synthesizer Operation.......................................................................................................... 2-25 2.7 VHF (136-174MHz) Receiver Front-End ..................................................................................... 2-26 2.7.1 Front-End Band-Pass Filters and Pre-Amplifier ................................................................... 2-27 2.7.2 First Mixer and 1st Intermediate Frequency (IF) .................................................................. 2-27 2.7.3 2nd Intermediate Frequency (IF) and Receiver Back-End................................................... 2-27 2.8 Transmitter Power Amplifier (PA) 45 W ...................................................................................... 2-28 2.8.1 Power Controlled Stage ....................................................................................................... 2-28 2.8.2 Pre-Driver Stage .................................................................................................................. 2-28 2.8.3 Driver Stage ......................................................................................................................... 2-29 2.8.4 Final Stage ........................................................................................................................... 2-29 2.8.5 Directional Coupler............................................................................................................... 2-29 2.8.6 Antenna Switch .................................................................................................................... 2-29 2.8.7 Harmonic Filter..................................................................................................................... 2-29 2.8.8 Power Control ...................................................................................................................... 2-30 2.9 Frequency Synthesis .................................................................................................................. 2-30 2.9.1 Reference Oscillator............................................................................................................. 2-30 2.9.2 Fractional-N Synthesizer...................................................................................................... 2-30 2.9.3 Voltage Controlled Oscillator (VCO) .................................................................................... 2-32 2.9.4 Synthesizer Operation.......................................................................................................... 2-33 2.10 Control Head (PRO3100, CDM750) ........................................................................................... 2-34 2.10.1 Power Supplies .................................................................................................................... 2-34 2.10.2 Power On/Off ....................................................................................................................... 2-34 2.10.3 Microprocessor Circuit ......................................................................................................... 2-34 2.10.4 SBEP Serial Interface .......................................................................................................... 2-35 2.10.5 Keypad Keys ........................................................................................................................ 2-35 2.10.6 Status LED and Back Light Circuit ....................................................................................... 2-35 2.10.7 Microphone Connector Signals ............................................................................................ 2-36 2.10.8 Speaker................................................................................................................................. 2-36 2.10.9 Electrostatic Transient Protection ........................................................................................ 2-36 2.11 Control Head (PRO5100, PRO7100, CDM1250, CDM1550) ..................................................... 2-37 2.11.1 Power Supplies .................................................................................................................... 2-37 2.11.2 Power On / Off ..................................................................................................................... 2-37 iii 2.11.3 Microprocessor Circuit ......................................................................................................... 2.11.4 SBEP Serial Interface .......................................................................................................... 2.11.5 Keypad Keys........................................................................................................................ 2.11.6 Status LED and Back Light Circuit....................................................................................... 2.11.7 Liquid Crystal Display (LCD)................................................................................................ 2.11.8 Microphone Connector Signals............................................................................................ 2.11.9 Speaker................................................................................................................................ 2.11.10 Electrostatic Transient Protection ........................................................................................ Chapter 3 2-37 2-38 2-38 2-38 2-39 2-39 2-40 2-40 Maintenance 3.1 Introduction ................................................................................................................................... 3-1 3.2 Preventive Maintenance ............................................................................................................... 3-1 3.2.1 Inspection............................................................................................................................... 3-1 3.2.2 Cleaning................................................................................................................................. 3-1 3.3 Safe Handling of CMOS and LDMOS ........................................................................................... 3-2 3.4 General Repair Procedures and Techniques ............................................................................... 3-2 3.5 Recommended Test Tools ............................................................................................................ 3-5 3.6 Transmitter Troubleshooting Chart ................................................................................................ 3-6 3.7 Receiver Troubleshooting Charts ................................................................................................. 3-7 3.8 Synthesizer Troubleshooting Charts ............................................................................................. 3-9 3.9 VCO Troubleshooting Charts....................................................................................................... 3-11 Chapter 4 Schematic Diagrams, Overlays, and Parts Lists 4.1 Introduction ................................................................................................................................... 4-1 4.1.1 Notes For All Schematics and Circuit Boards ........................................................................ 4-1 List of Figures 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12 2-13 2-14 Controller Block Diagram............................................................................................................... 2-1 DC Power Distribution Block Diagram ........................................................................................... 2-3 Transmit Audio Paths .................................................................................................................... 2-9 Transmit Signalling Paths ............................................................................................................ 2-11 Receive Audio Paths ................................................................................................................... 2-13 Receive Signalling Paths ............................................................................................................. 2-16 UHF Receiver Block Diagram ...................................................................................................... 2-18 UHF Transmitter Block Diagram.................................................................................................. 2-20 UHF Synthesizer Block Diagram ................................................................................................. 2-23 UHF VCO Block Diagram ............................................................................................................ 2-24 VHF Receiver Block Diagram ...................................................................................................... 2-26 VHF Transmitter Block Diagram .................................................................................................. 2-28 VHF Synthesizer Block Diagram ................................................................................................. 2-31 VHF VCO Block Diagram ............................................................................................................ 2-32 4-1 4-2 4-3 4-4 PRO3100/CDM750 Control Head Top Overlay ............................................................................ 4-3 PRO3100/CDM750 Control Head Bottom Overlay ....................................................................... 4-4 PRO3100CDM750 Control Head Schematic Diagram, Sheet 1 ................................................... 4-5 PRO3100CDM750 Control Head Schematic Diagram, Sheet 2 ................................................... 4-6 iv 4-5 4-6 4-7 4-8 4-9 4-10 4-11 4-12 4-13 4-14 4-15 4-16 4-17 4-18 4-19 4-20 4-21 4-22 4-23 4-24 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Top Overlay .......................................................................................................................................... 4-9 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Bottom Overlay ........................................................................................................................................ 4-10 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Schematic Diagram ..................................................................................................................... 4-11 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Keypad Schematic Diagram..................................................................................................................... 4-12 PRO5100/PRO7100/CDM1250/CDM1550 Control Head LCD Schematic ................................................................................................................................... 4-13 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Display Schematic ................................................................................................................................... 4-14 Complete Controller Schematic Diagram .................................................................................... 4-17 Controller Control Schematic Diagram ...................................................................................... 4-18 Controller I/O Schematic Diagram .............................................................................................. 4-19 Controller Audio Schematic Diagram .......................................................................................... 4-20 Controller Supply Voltage Schematic Diagram ........................................................................... 4-21 UHF (403-470MHz) Voltage Controlled Oscillator Schematic Diagram ...................................... 4-25 UHF (403-470MHz) Fractal-N Schematic Diagram .................................................................... 4-26 UHF (403-470MHz) Power Amplifier Schematic Diagram .......................................................... 4-27 VHF (136-174MHz) Main Board Top Side PCB .......................................................................... 4-33 VHF (136-174MHz) Receiver Front End Schematic Diagram .................................................... 4-34 VHF (136-174MHz) Receiver IF Schematic Diagram ................................................................. 4-35 VHF (136-174MHz) Fractal-N Schematic Diagram ..................................................................... 4-36 VHF (136-174MHz) Voltage Controlled Oscillator Schematic Diagram ...................................... 4-37 VHF (136-174MHz) Power Amplifier Schematic Diagram .......................................................... 4-38 List of Tables 1-1 Radio Model Number ..................................................................................................................... 1-3 3-1 Recommended Test tools .............................................................................................................. 3-5 4-1 4-2 4-3 4-4 4-5 PRO3100/CDM750 Control Head Parts List.................................................................................. 4-7 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Parts List............................................ 4-15 Controller Parts List ..................................................................................................................... 4-22 UHF B1 Radio Parts List.............................................................................................................. 4-28 VHF (136-174MHz) Radio Parts List ........................................................................................... 4-39 1-1 Chapter 1 Introduction 1.1 Scope of Manual This manual is intended for use by service technicians familiar with similar types of equipment. It contains service information required for the equipment described and is current as of the printing date. Changes that occur after the printing date are incorporated by a complete manual revision or alternatively, as additions. NOTE Before operating or testing these units, please read the Safety Information Section in the front of this manual. 1.2 Warranty and Service Support Motorola offers long term support for its products. This support includes full exchange and/or repair of the product during the warranty period, and service/repair or spare parts support out of warranty. Any “return for exchange” or “return for repair” by an authorized Motorola dealer must be accompanied by a warranty claim form. Warranty claim forms are obtained by contacting customer service. 1.2.1 Warranty Period The terms and conditions of warranty are defined fully in the Motorola dealer or distributor or reseller contract. These conditions may change from time to time and the following notes are for guidance purposes only. 1.2.2 Return Instructions In instances where the product is covered under a “return for replacement” or “return for repair” warranty, a check of the product should be performed prior to shipping the unit back to Motorola. This is to ensure that the product has been correctly programmed or has not been subjected to damage outside the terms of the warranty. Prior to shipping any radio back to a Motorola warranty depot, please contact the appropriate customer service for instructions. All returns must be accompanied by a warranty claim form, available from your customer services representative. Products should be shipped back in the original packaging, or correctly packaged to ensure no damage occurs in transit. 1.2.3 After Warranty Period After the Warranty period, Motorola continues to support its products in two ways: Firstly, Motorola's Accessories and Aftermarket Division (ADD) offers a repair service to both end users and dealers at competitive prices. Secondly, Motorola’s service department supplies individual parts and modules that can be purchased by dealers who are technically capable of performing fault analysis and repair. 1-2 1.3 Related Documents Related Documents The following documents are directly related to the use and maintainability of this product. 1.4 Title Part Number Service Manual, Basic, Engl 68P81091C62 Service Manual, Basic, Engl 68P81092C71 Service Manual, Basic, Port 68P81092C73 Service Manual, Basic,Span 68P81092C72 Service Manual, Detailed, Engl 68P81091C63 Service Manual, Detailed, Port 68P81092C76 Service Manual, Detailed, Span 68P81092C75 Technical Support Technical support is available to assist the dealer/distributor and self-maintained customers in resolving any malfunction which may be encountered. Initial contact should be by telephone to customer resources wherever possible. When contacting Motorola technical support, be prepared to provide the product model number and the unit’s serial number. The contact locations and telephone numbers are listed below. United States and Puerto Rico: 1-800-694-2161, Options 1, 3 Brasil: 000-811-682-0550 Colombia: 980-12-0451 Mexico: 001-800-694-2161 From other countries: (954)723-3008 1.5 Warranty and Repairs For warranty and repairs, contact Motorola Technical Support as listed below. Be prepared to provide the product model number and the unit’s serial number. Some replacement parts, spare parts, and/or product information can be ordered directly. If a complete Motorola part number is assigned to the part, and it is not identified as “Depot ONLY”, the part is available from Motorola Accessories and Aftermarket Division (AAD). If no part number is assigned, the part is not normally available from Motorola. If the part number is appended with an asterisk, the part is serviceable by a Motorola depot only. If a parts list is not included, this generally means that no user-serviceable parts are available for that kit or assembly.Technical Support the product model number and the unit’s serial number. Warranty and Repairs 1-3 Parts Order Entry 7:00 A. M. to 7:00 P. M. (Central Standard Time) Monday through Friday (Chicago, U. S. A.) To Order Parts in Latin America and the Caribbean: 1-847-538-8023 Motorola Parts To Order Parts in the United States of America: Accessories and Aftermarket Division (United States and Canada) 1-800-422-4210, or 847-538-8023 1-800-826-1913, or 410-712-6200 (U. S. Federal Attention: Order Processing Government) 1313 E. Algonquin Road Schaumburg, IL 60196 TELEX: 280127 FAX: 1-847-538-8198 Accessories and Aftermarket Division FAX: 1-410-712-4991 (U. S. Federal Government) Attention: Latin America and Caribbean (U. S. A.) after hours or weekends: 1-800-925-4357 Order Processing 1313 E. Algonquin Road Schaumburg, IL 60196 Parts Identification 1-847-538-0021 (Voice) 1-847-538-8194 (FAX) Colombia Motorola de Colombia Diagonal 127A 17-64 Santa Fe de Bogota Columbia Telefono: 1-615-5759 Brazil Motorola Do Brasil Rua Bandeira Paulista, 580 Phone: (11)821-9991 Fax: (11)828-0157 Puerto Rico Motorola de Puerto Rico A BE. Chardon, Edificio Telemundo 2 Hato Rey, PR 00918 Telefono: (787)641-4100 Fax: (787)782-3685 Mexico Motorola De Mexico Blvd. Manuel Avila Camacho #32, Primer Piso COL. Lomas de Chapultepec Mexico D.F. 06700 CP 11000 Mexico Phone: (5)387-0501 Fax: (5)387-0554 1-4 1.6 Radio Model Chart and Specifications Radio Model Chart and Specifications The radio model charts and specifications are located in the Basic Service Manual listed under the Related Documents paragraph of this chapter. 1.7 Radio Model Information The model number and serial number are located on a label attached to the back of your radio. You can determine the RF output power, frequency band, protocols, and physical packages from these numbers. The example below shows one portable radio model number and its specific characteristics. Table 1-1. Example: AAM25RHC9AA1AN Type of Model Unit Series M M = Mobile Motorola Internal Use AA or LA 25 Freq. Band K VHF (136174MHz) Power Level Radio Model Number Physical Packages Channel Spacing H A 1-25W No Display, No Keypad 9 Programmable R K C UHF1 25-40W No Display (403Basic Key470MHz) pad Protocol Feature Level Model Revision Model Package AA Conventional 1 4F A N DU LTR 2 64F S UHF2 (450512MHz) D 1-Line Display, Limited Keypad 5 128F B Low Band, R1 (29.736.0MHz) F 1-Line Display, Standard Keypad 8 160F C Low Band, R2 (36.042.0MHz) N 4-Line Display, Enhanced Keypad D Low Band, R3 (42.050.0MHz) 2-1 Chapter 2 Theory of Operation 2.1 Overview This chapter provides a detailed theory of operation for the radio and its components. The radio is designed as a single board unit consisting of a transmitter, receiver, and controller circuits. The board also accepts one additional option board that can provide functions such as secure voice/data, voice storage, or a signalling decoder. A control head mounted directly on the front of the radio or remotely connected by an extension cable provides a user interface for controlling the various features of the radio.The control head contains, LED indicators, microphone connector, and buttons depending on the radio type, display, and speaker. If a control head is not mounted directly on the front of the radio, an expansion board containing circuits for special applications can be mounted in its place on the front of the radio. An additional control head may be connected using an extension cable. The rear of the radio provides connections for a power, antenna, and accessory cable. The accessory cable provides connections for items such as an external speaker, emergency switch, foot operated PTT, and ignition sensing, etc. 2.2 Controller The radio controller, shown in Figure 2-1, is divided into three main functions: n Digital control n Audio processing n Voltage regulation. The digital control section of the radio consists of a microprocessor (µP), support memory, support logic, signal MUX ICs, on/off circuit, and general purpose input/output circuits. To Synthesizer 16.8 MHz Reference Clock from Synthesizer External Microphone Mod Out Audio/Signalling Recovered Audio ASFIC_CMP External Speaker Audio PA 5V from Synthesizer Section (5V_RF) Internal Speaker µP Clock SPI To RF Section SCI to Accessory & Control Head Connector Digital 5V Regulator (5VD) RAM EEPROM HC11FL0 FLASH Figure 2-1. Controller Block Diagram 2-2 2.2.1 Theory of Operation Radio Power Distribution The dc power distribution throughout the radio board is shown in Figure 2-2. Voltage regulation for the controller is provided by four separate devices: n U0651 (MC78M05) +5 volts n U0641 (LM2941) +9.3 volts n U0611 (LM2941) +12 volts n VSTBY 5V (a combination of R0621 and VR0621) n Additional 5 volt regulator located in the RF section. The dc voltage applied to connector J0601 supplies power directly to the following: n Electronic on/off control n RF power amplifier n 12 volt regulator n 9.3 volt regulator n Audio PA n 5.6 volt stabilization circuit n 9.3 volt regulator (U0641) supplies power to the 5 volt regulator (U0651) and 6 volt voltage divider Q0681 Regulator U0641 generates the 9.3 volts required by some audio circuits, the RF and power control circuits. Input and output capacitors C0641 and C0644 / C0645 are used to reduce high frequency noise. Resistors R0642 / R0643 set the output voltage of the regulator. If the voltage at pin 1 is greater than 1.3 volts the regulator output decreases and if the voltage is less than 1.3 volts the regulator output increases. This regulator output is enabled by a 0 volt signal on pin 2. Transistors Q0661, Q0641, and R0641 are used to disable the regulator when the radio is turned off. Voltage regulator U0651 provides 5 volts operating voltage for the digital circuits. Operating voltage is from the regulated 9.3volts supply. Input and output capacitors (C0651 / C0652 and C0654 / C0655) reduce high frequency noise and provide proper operation during battery transients. Voltage sense device U0652 or alternatively U0653 provides a reset output that goes to 0 volts if the regulator output goes below 4.5 volts. This resets the controller to prevent improper operation. Diode D0651 prevents discharge of C0652 by negative spikes on the 9.3 volt supply. Transistor Q0681 and resistors R0681 / R0682 divide the regulated 9.3 volts down to about 6 volts. This voltage supplies the 5 volt regulator, located on the RF section. By reducing the supply voltage of the regulator, the power dissipation is divided between the RF section and the controller section. The VSTBY signal, derived directly from the supply voltage by components R0621 and VR0621, buffers the internal RAM. Capacitor C0622 allows the battery voltage to be disconnected for several seconds without losing RAM information. Dual diode D0621 prevents radio circuits from discharging this capacitor. When the supply voltage is applied to the radio, C0622 is charged via R0621 and D0621. When the radio is switched on, the µP enters the wrong mode if the voltage across C0622 is still too low. The regulated 5 volts charges C0622 via diode D0621. Theory of Operation 2-3 J0601 13.2V PA, Driver Antenna Switch Accessories 20 Pin Connector Control Head 12 Pin Connector Option Board 40 Pin Connector PASUPVLTG 12V Regulator SWB+ FLT_A+ ON / OFF Control Ignition Emergency ON/OFF 5VD FLT_A+ 9.3V Regulator Audio PA 5.6V 9V3 PCIC, TX Amp Temp Sense RX RF Amp IF Amp 6V Regulator 5V Regulator 5V Regulator 5V_RF 5V/ VDDA 5VD MCU µP, RAM, FLASH & EEPROM ASFIC_CMP FRACTN VCOBIC VSTBY Figure 2-2. DC Power Distribution Block Diagram The INT SW B+ voltage from switching transistor Q0661 provides power to the circuit controlling the audio PA output. The voltage is monitored by the µP through voltage divider R0671/R0672 and the line battery voltage. Diode VR0671 limits the divided voltage to 5.6 volts to protect the µP. Regulator U0611 generates the voltage for the switched supply voltage output (SWB+) at accessory connector J0501, pin 13. U0611 operates as a switch with voltage and current limit. Resistors R0611/R0612 set the maximum output voltage to 16.5 volts. This limitation is only active at high supply voltage levels. The regulator output is enabled by a 0 volt signal at Q0661, pin 2. Q0641 and R0641 disable the regulator when the radio is turned off. Input and output capacitors C0603 and C0611/C0612 reduce high frequency noise. Diode VR0601 protects against transients and reverse polarity of the supply voltage. 2.2.2 Automatic On/Off The radio software and/or external triggers turn the radio on or off without direct user action. For example, automatic turn on when ignition is sensed and off when ignition is off. Q0661 provides the INT SW B+ voltage to the various radio circuits and to enable the voltage regulators via transistor Q0641 which contains a pnp and an npn transistor that provide an electronic on/off switch. The switch is on when the collector of the npn transistor within Q0661 is low. When the radio is off the collector is at supply voltage level. This effectively prevents current flow from emitter to collector of the pnp transistor. When the radio is turned on the voltage at the base of the npn transistor is pulled high and the pnp transistor switches on (saturation). With the INT SWB+ voltage now at supply voltage level, transistor Q0641 pulls pin 2 of the voltage regulators U0611 and U 0641 to ground level, enabling their outputs. The electronic on/off circuits are enabled by the µP through ASFIC CMP port GCB2, line DC POWER ON, emergency switch (line EMERGENCY CONTROL), the mechanical On/Off/Volume knob on the control head (line ON OFF CONTROL), or the ignition sense circuits (line IGNITION CONTROL). If any of the four paths cause a low at the collector of the npn transistor within Q0661, the electronic "ON" is engaged. 2-4 2.2.3 Theory of Operation Emergency The emergency switch (J0501, pin 9), when engaged, grounds the base of Q0662 via the EMERGENCY CONTROL line. This switches Q0662 off and resistor R0662 pulls the collector of Q0662 and the base of Q0663 to levels above two volts. Transistor Q0663 then switches on and pulls the collector of the npn transistor within Q0661 to ground level This enables the voltage regulators via Q0641. When the emergency switch is released, R0541 pulls the base of Q0662 up to 0.6 volts causing the collector of transistor Q0662 to go low (0.2 volts), switching Q0663 off. While the radio is on, the µP monitors the voltage at the emergency input on the accessory connector via pin 60 and the GP5 IN ACC9 line. Three different conditions can exit: no emergency, emergency, and open connection to the emergency switch. If no emergency switch is connected or the connection to the emergency switch is broken, the resistive divider R0541/R0512 sets the voltage to about 4.7 volts. If an emergency switch is connected, a resistor to ground within the emergency switch reduces the voltage on line GP5 IN ACC9 to inform the µP that the emergency switch is operational. An engaged emergency switch pulls line GP5 IN ACC9 to ground level. Diode D0179 limits the voltage to protect the µP input. While the EMERGENCY CONTROL signal is low and INT SW B+ is on, the µP starts execution, reads that the emergency input is active through the voltage level of line GP5 IN ACC9, and sets the DC POWER ON output of the ASFIC CMP, pin 13 to a logic high. This keeps Q0661 and Q0641 switched to allow a momentary press of the emergency switch to power up the radio. When the µP has finished processing the emergency press, it sets the DC POWER ON line to a logic 0. This turns off Q0661 and the radio turns off. Notice that the µP is alerted to the emergency condition via line GP5 IN ACC9. If the radio is already on when the emergency is triggered, the DC POWER ON signal is already high. 2.2.4 Mechanical On/Off This refers to the on/off/volume knob located on the control head which is used to turn the radio on and off and control the volume. If the radio is turned off and the on/off/volume knob is pressed, line ON OFF CONTROL (J0401, pin 11) goes high and switches the radio’s voltage regulators on as long as the button is pressed. The µP is alerted through line ON OFF SENSE (U0101, pin 6) which is pulled to low by Q0110 while the on/ off/volume knob is pressed. In addition, an interrupt is generated at µP, pin 96. The µP asserts line DC POWER ON via ASFIC CMP, pin 13 high which keeps the radio switched on. The µP switches the radio off by setting DC POWER ON to low via ASFIC CMP pin 13. 2.2.5 Ignition Ignition sense prevents the radio from draining the vehicle’s battery because the engine is not running. When the IGNITION input (J0501, pin 10) goes above 5 volts, Q0661 is turned on via line IGNITION CONTROL. Q0661 turns on INT SW B+ and the voltage regulators by turning on Q0641 and the µP starts execution. The µP is alerted through line GP6 IN ACC10. While the on/off button is pressed, a high signal turns Q0181 on, which pulls µP, pin 74 to low. If the software detects a low state it asserts DC POWER ON via ASFIC, pin 13 high which keeps Q0661 and Q0641 and the radio switched on. When the IGNITION input goes below 3 volts, Q0181 switches off and R0181 pulls µP, pin 74 to high. This alerts the software to switch off the radio by setting DC POWER ON to low. The next time the IGNITION input goes above 5 volts the above process is repeated. Theory of Operation 2.2.6 2-5 Microprocessor Clock Synthesizer The clock source for the µP system is generated by the ASFIC CMP (U0221). Upon power-up the synthesizer IC (FRAC-N) generates a 16.8 MHz waveform that is routed from the RF section to the ASFIC CMP, pin 34. For the main board controller the ASFIC CMP uses 16.8 MHz as a reference input clock signal for its internal synthesizer. The ASFIC CMP, in addition to the audio circuit, has a programmable synthesizer which can generate a synthesized signal ranging from 1200Hz to 32.769MHz in 1200Hz steps. When power is first applied, the ASFIC CMP generates its default 3.6864MHz CMOS square wave UP CLK (on U0221, pin 28) and this is routed to the µP (U0101, pin 90). After the µP starts operation, it reprograms the ASFIC CMP clock synthesizer to a higher UP CLK frequency (usually 7.3728 or 14.7456 MHz) and continues operation. The ASFIC CMP may be reprogrammed to change the clock synthesizer frequencies at various times depending on the software features that are executing. In addition, the clock frequency of the synthesizer is changed in small amounts if there is a possibility of harmonics of this clock source interfering with the desired radio receive frequency. The ASFIC CMP synthesizer loop uses C0245, C0246 and R0241 to set the switching time and jitter of the clock output. If the synthesizer cannot generate the required clock frequency it switches back to its default 3.6864MHz output. Because the ASFIC CMP synthesizer and the µP do not operate without the 16.8 MHz reference clock, the synthesizer and the voltage regulators should be checked first in debugging the system. The µP uses crystal oscillator Y0131 and associated components to form a real time clock used to display the time on control heads (with display) or as time stamp for incoming calls or messages. The real time clock is powered from the voltage VSTBY to keep running while the radio is switched off. If the radio is disconnected from the supply voltage, the time must be reset. 2.2.7 Serial Peripheral Interface (SPI) The µP communicates to many of the IC’s through its SPI port. This port consists of SPI TRANSMIT DATA (MOSI) (U0101, pin 100), SPI RECEIVE DATA (MISO) (U0101, pin 99), SPI CLK (U0101, pin 1) and chip select lines going to the various ICs. The BUS is a synchronous bus, in that the timing clock signal CLK is sent while SPI data (SPI TRANSMIT or RECEIVE) is sent. Therefore, whenever there is activity on either SPI TRANSMIT DATA or SPI RECEIVE DATA there should be a uniform signal on CLK. The SPI TRANSMIT DATA sends serial data from the µP to a device, and SPI RECEIVE DATA is sends data from a device to the µP. On the controller there are two ICs on the SPI BUS: ASFIC CMP (U0221, pin 22), and EEPROM (U0111, pin 5). In the RF section there are two ICs on the SPI BUS: FRAC-N Synthesizer, and the Power Control IC (PCIC). The SPI TRANSMIT DATA and CLK lines going to the RF section are filtered by L0481/R0481 and L0482/R0482 to minimize noise. The chip select line CSX from U0101, pin 2 is shared by the ASFIC CMP, FRAC-N Synthesizer, and PCIC. Each of these IC‘s check the SPI data and when the sent address information matches the IC’s address, the data that follows is processed. The chip select lines for the EEPROM (EE CS), voice storage (VS CS), expansion board (EXP1 CS, EXP2 CS) and option board (OPT CS) are decoded by the address decoder U0141. When the µP needs to program any of these IC’s it brings the chip select line CSX to a logic 0 and then sends the proper data and clock signals. The amount of data sent varies, for example the ASFIC CMP can receive up to 19 bytes (152 bits) while the PCIC can receive up to 6 bytes (48 bits). After the data is sent, the chip select line is returned to logic 1. 2-6 Theory of Operation The option board interfaces are different in that the µP can also read data back from devices connected.The timing and operation of this interface is specific to the option connected, but the general pattern is as follows: n n 2.2.8 Option board generates a service request via J0551, pin 29, line RDY, and µP, pin 79 The main board asserts a chip select for that option board via U0141,pin 14, line OPT CS, J0551,pin 30 n The main board µP generates the CLK (J0551, pin 3) n The main board µP writes serial data via J0551, pin 15 and reads serial data via J0551, pin 16 n When data transfer is complete the main board terminates the chip select and CLK activity SBEP Serial Interface The SBEP serial interface allows the radio to communicate with the Customer Programming Software (CPS), or the universal tuner via the Radio Interface Box (RIB). This interface connects to the microphone connector via control head connector (J0401, pin 8) or to the accessory connector J0401, pin 17 and comprises BUS+. The line is bi-directional, meaning that either the radio or the RIB can drive the line. The µP sends serial data via pin 98 and D0101 and it reads serial data via pin 97. Whenever the µP detects activity on the BUS+ line, it starts communication. In addition, the SBEP serial interface is used to communicate with a connected control head. When a control head key is pressed or the volume knob is rotated, the line ON OFF CONTROL goes high. This turns on transistor Q0110 which pulls line ON OFF SENSE and µP, pin 6 to ground level. In addition, an interrupt is generated via R0109 (for SELECT 5 / MDC models) or R0128, U0125, pins 17/26 (for MPT models) and µP, pin 96. This indicates that the control head wants to start SBEP communication. The µP then reads the registers of the Universal Asynchronous Receiver Transmitter (UART) U0125 to determine whether the interrupt source was the control head or the UART (MPT models only). If the interrupt source was from the control head, the µP requests the data from the control head. The control head starts sending and after all data has been sent, the ON OFF CONTROL line goes low. The control head ignores any data on BUS+ during SBEP communication with the CPS or universal tuner. 2.2.9 General Purpose Input/Output The controller provides eight general purpose lines (DIG1 through DIG8) available on the accessory connector J0501 to interface the external options. Lines DIG IN 1,3,5,6, are inputs, DIG OUT 2 is an output and DIG IN OUT 4,7,8 are bidirectional. The software and the hardware of the radio model define the function of each port. DIG IN 1 can be used as external PTT input or others, set by the CPS. The µP reads this port via pin 77 and Q0171. DIG OUT 2 can be used as normal output or external alarm output, set by the CPS. Transistor Q0173 is controlled by the µP via ASFIC CMP, pin 14. DIG IN 3 is read by µP, pin 63 via resistor R0176 DIG IN 5 can be used as normal input or emergency input, set by the CPS. The µP reads this port via R0179 and µP, pin 60. Diode D0179 limits the voltage to protect the µP input. DIG IN 6 can be used as normal input, set by the CPS. The µP reads this port via, pin 74 and Q0181. DIG IN OUT 4,7,8 are bidirectional and use the same circuit configuration. Each port uses an output transistor Q0177, Q0183, Q0185 controlled by µP, pins 46, 47, 53. The ports are read by µP, pins 75, 54, 76. To use one of the ports as input the µP must turn off the corresponding output transistor. In addition the signals from DIG IN 1, DIG IN OUT 4 are fed to the option board connector J0551 and the expansion board connector J0451. Theory of Operation 2-7 2.2.10 Normal Microprocessor Operation The µP is configured to operate in one of two modes: expanded or bootstrap. In expanded mode, the µP uses external memory devices to operate. In bootstrap mode, the µP uses only its internal memory. During normal operation of the radio, the µP is operating in expanded mode and the µP (U0101) has access to three external memory devices: U0121 (EEPROM), U0122 (SRAM), and U0111 (EEPROM). Also, within the µP there are three KBs of internal RAM, as well as logic to select external memory devices. The external EEPROM (U0111) space contains the information in the radio which is customer specific, referred to as the codeplug. This information consists of items such as: n Band in which the radio operates n What frequencies are assigned to what channel n Tuning information. The external SRAM (U0122) as well as the µP’s own internal RAM space are used for temporary calculations required by the software during execution. All of the data stored in both of these locations is lost when the radio powers off (See the particular device subsection for more details). The µP provides an address bus of 16 address lines (ADDR 0 - ADDR 15), and a data bus of eight data lines (DATA 0 - DATA 7). There are also three control lines: CSPROG (U0101, pin 38) to chip select U0121, pin 30 (EEPROM), CSGP2 (U0101, pin 41) to chip select U0122, pin 20 (SRAM) and PG7 R W (U0101, pin 4) to select whether to read or to write. The external EEPROM (U0111,pin 1), the OPTION BOARD and EXPANSION BOARD are selected by three lines of the µP using address decoder U0141. The chips ASFIC CMP / FRAC-N / PCIC are selected by line CSX (U0101, pin 2). When the µP is functioning normally, the address and data lines are toggling at CMOS logic levels. Specifically, the logic high levels should be between 4.8 to 5.0 volts, and the logic low levels should be between 0 to 0.2 volts. No other intermediate levels should be observed, and the rise and fall times should be <30ns. The low-order address lines (ADDR 0 - ADDR 7) and the data lines (DATA 0-DATA 7) should be toggling at a high rate, e. g., you should set your oscilloscope sweep to 1µs/div. or faster to observe individual pulses. High speed CMOS transitions should also be observed on the µP control lines.On the µP the lines XIRQ (U0101, pin 48), MODA LIR (U0101, pin 58), MODB VSTPY (U0101, pin 57) and RESET (U0101, pin 94) should be high at all times during normal operation. Whenever a data or address line becomes open or shorted to an adjacent line, a common symptom is that the RESET line goes low periodically, with the period being in the order of 20msecs. In the case of shorted lines you may also detect the line periodically at an intermediate level, i.e. around 2.5 volts when two shorted lines attempt to drive to opposite rails. The MODA LIR (U0101, pin 58) and MODB VSTPY (U0101, pin 57) inputs to the µP must be at a logic 1 for it to start executing correctly. After the µP starts execution it periodically pulses these lines to determine the desired operating mode. While the central processing unit (CPU) is running, MODA LIR is an open-drain CMOS output which goes low whenever the µP begins a new instruction. One instruction typically requires 2-4 external bus cycles, or memory fetches. There are eight analog-to-digital converter ports (A/D) on U0101 labelled within the device block as PE0-PE7. These lines sense the voltage level ranging from 0 to 5V of the input line and convert that level to a number ranging from 0 to 255 which is read by the software to take appropriate action. For example U0101, pin 67 is the battery voltage detect line. R0671 and R0672 form a resistor divider on INT SWB+. With 30K and 10K and a voltage range of 11V to 17V, that A/D port is 2.74V to 4.24V which is then be converted to ~140 to 217 respectively. 2-8 Theory of Operation U0101-69 is the high reference voltage for the A/D ports on the µP. Capacitor C0101 filters the +5 volt reference. If this voltage is lower than +5 volt, the A/D reading is incorrect. Likewise U0101, pin 68 is the low reference for the A/D ports. This line is normally tied to ground. If this line is not connected to ground, the A/D readings could be incorrect. 2.2.11 Static Random Access Memory (SRAM) The SRAM (U0121) contains temporary radio calculations or parameters that can change very frequently, and which are generated and stored by the software during its normal operation. The information is lost when the radio is turned off. The device allows an unlimited number of write cycles. SRAM accesses are indicated by the CS signal U0122, pin 20 which is the result of U0101-CSGP2 going low. U0122 is commonly referred to as the external RAM as opposed to the internal RAM which is the 3 KBs of RAM (part of the 68HC11FL0). Both RAM spaces serve the purpose. However, the internal RAM is used for the calculated values which are accessed most often. Capacitor C0122 filters out any ac noise which may ride on +5V at U0122. 2.3 Controller Board Audio and Signalling Circuits 2.3.1 Audio Signalling Filter IC with Compander (ASFIC CMP) The ASFIC CMP (U0221) used in the controller has the four following functions: n RX/TX audio shaping, i.e. filtering, amplification, attenuation n RX/TX signalling, PL/DPL/HST/MDC/MPT n Squelch detection n µP clock signal generation The ASFIC CMP is programmable through the SPI BUS (U0221-20/21/22), normally receiving 19 bytes. This programming sets up various paths within the ASFIC CMP to route audio and/or signalling signals through the appropriate filtering, gain, and attenuator blocks. The ASFIC CMP also has six general control bits (GCB0-5) which are CMOS level outputs and used for NOISE BLANKER (GCB0) in low band radios, EXTERNAL ALARM (GCB1), and DC POWER ON (GCB2) to switch the voltage regulators (and the radio) on and off. GCB3 controls U0251, pin 11 to output either RX FLAT AUDIO or RX FILTERED AUDIO on the accessory connector, pin 11. GCB4 controls U0251, pin 10 to use either the external microphone input or the voice storage playback signal. GCB5 switches the audio PA on and off. Theory of Operation 2.3.2 2-9 Transmit Audio Circuits Refer to Figure 2-3 for the descriptions that follow. J0551 J0451 FLAT TX RTN 31 18 39 EXPANSION BOARD 33 IN OPTION OUT BOARD IN OUT 32 J0401 9 MIC 46 MIC INT J0501 EXT MIC FLAT TX AUDIO 36 TX RTN TP0221 CONTROL HEAD CONNECTOR 2 44 TX SND TP0222 48 MIC EXT 42 5 AUX TX ACCESSORY CONNECTOR FILTERS AND PREEMPHASIS MIC ASFIC_CMP IN U0221 LIMITER HS SUMMER SPLATTER FILTER VCO ATN LS SUMMER ATTENUATOR MOD IN 40 TO RF SECTION (SYNTHESIZER) Figure 2-3. Transmit Audio Paths 2.3.3 Microphone Input Path The radio supports two microphone input paths. One from the control head external microphone accessory connector J0501, pin 2, and one from the microphone auxiliary path (FLAT TX AUDIO) via accessory connector J0501, pin 5. The microphones require a DC biasing voltage provided by a resistive network. The two microphone audio input paths enter the ASFIC CMP at U0221, pin 48 (external microphone) and U0221, pin 46 (auxiliary microphone). The microphone is plugged into the radio control head which is connected to the controller board via J0401, pin 9. The signal is then routed via R0409 and line INT MIC to R0205. Resistors R0201 and R0202 provide 9.3Vdc bias. Resistive divider R0205/R0207 divide the input signal by 5.5 and provide input protection for the CMOS amplifier input. R0202 and C0201 provide a 560 ohm AC path to ground that sets the input impedance for the microphone and determines the gain based on the emitter resistor in the microphone’s amplifier circuit. Capacitor C0204 provides dc blocking. The audio signal at U0221, pin 46 (TP0221) is approximately 14mV for 1.5kHz or 3kHz of deviation with 12.5kHz or 25kHz channel spacing. The external microphone signal enters the radio on accessory connector J0501, pin 5, then it is routed via line EXT MIC to resistor R0206. Resistors R0201 and R0204 provide a 9.3Vdc bias. Resistive divider R0206 / R0208 divide the input signal by 5.5 and provide input protection for the CMOS amplifier input. R0204 and C0201 provide a 560 ohm AC path to ground that sets the input impedance for the microphone and determines the gain based on the emitter resistor in the microphone’s amplifier circuit. Capacitor C0254 provides dc blocking. 2-10 Theory of Operation Multi switch U0251 controlled by ASFIC CMP port GCB4 selects either the external microphone input signal or the voice storage playback signal for entering the ASFIC CMP at pin 48. The audio signal at U0221-48 (TP0222) is approximately 14mVrms for 1.5kHz or 3kHz of deviation with 12.5kHz or 25kHz channel spacing. The FLAT TX AUDIO signal from accessory connector J0501-5 is fed to the ASFIC CMP (U0221, pin 42) through C0541 and line FLAT TX RTN. The ASFIC has an internal AGC that controls the gain in the microphone audio path. The AGC can be disabled/enabled by the µP. Another feature that can be enabled/disabled in the ASFIC is the VOX. This circuit, along with the capacitor at U0221, pin 7, provides a dc voltage allows the µP to detect microphone audio. The ASFIC can also be programmed to route the microphone audio to a speaker for public address operation. 2.3.3.1 PTT Sensing and TX Audio Processing The microphone PTT signal coming from the control head is sent via the SBEP bus to the µP. An external PTT can be generated by grounding pin 3 on the accessory connector if this input is programmed for PTT by the CPS. When microphone PTT is sensed, the µP always configures the ASFIC CMP for the "internal" microphone audio path, and external PTT results in the external microphone audio path being selected. Inside the ASFIC CMP, the microphone audio is filtered to eliminate frequency components outside the 300-3000Hz voice band, and pre-emphasized if pre-emphasis is enabled. The signal is then limited to prevent the transmitter from over deviating. The limited microphone audio is then routed through a summer, which is used to add in signalling data, and then to a splatter filter to eliminate high frequency spectral components that could be generated by the limiter. The audio is then routed to an attenuator, which is tuned in the factory or the field to set the proper amount of FM deviation. The TX audio emerges from the ASFIC CMP at U0221-40 MOD IN, at which point it is routed to the RF section. 2.3.3.2 TX Secure Audio (optional) The audio follows the normal transmit audio processing until it emerges from the ASFIC CMP TX SND pin (U0221-44), which is fed to the Secure board residing at option connector J0551-33. The Secure board contains circuits to amplify, encrypt, and filter the audio. The encrypted signal is then fed back from J0551-32 to the ASFIC CMP TX RTN input (U0221-36). The signal level at this pin should be about 65mVrms. The signal is then routed through the TX path in the ASFIC CMP and emerges at MOD IN pin 40. 2.3.3.3 Option Board Transmit Audio The audio follows the normal transmit audio processing until it emerges from the ASFIC CMP TX SND pin (U0221-44), which is fed to the option board residing at option connector J0551-33. The option board contains circuits to process the audio. The processed signal is then fed back from J0551-32 to the ASFIC CMP TX RTN input (U0221-36). The signal level at this pin is approximately 65mVrms. The signal is then routed through the TX path in the ASFIC CMP and out at MOD IN, pin 40. Theory of Operation 2.3.4 2-11 Transmit Signalling Circuits Refer to Figure 2-4 for the descriptions that follow. Figure 2-4. Transmit Signalling Paths The three types of transmit signalling paths are as follows: • • • Sub-audible data (PL/DPL/connect tone) summed with transmit voice or signalling DTMF data for telephone communication between trunked and conventional systems Audible signalling NOTE All three types are supported by the hardware while the radio software determines which signalling type is available. 2.3.4.1 Sub-Audible Data (PL/DPL) Sub-audible data implies signalling whose frequency/data rate is below 300Hz. PL and DPL waveforms are used for conventional operation and connect tones for trunked voice channel operation. The trunking connect tone is simply a PL tone at a higher deviation level than PL in a conventional system. Although it is referred to as "sub-audible data," the actual frequency spectrum of these waveforms may be as high as 250 Hz, which is audible to the human ear. However, the radio receiver filters out any audio below 300Hz, so these tones are never heard in the actual system. Only one type of sub-audible data can be generated by U0221 (ASFIC CMP) at any one time. The process is as follows, using the SPI BUS, the µP programs the ASFIC CMP to set up the proper lowspeed data deviation and select the PL or DPL filters. The µP then generates a square wave which strobes the ASFIC PL / DPL encode input LSIO U0221-18 at twelve times the desired data rate. For example, for a PL frequency of 103Hz, the frequency of the square wave is 1236Hz. This drives a tone generator inside U0221 which generates a staircase approximation to a PL sine wave or DPL data pattern. This internal waveform is then low-pass filtered and summed with voice or data. The resulting summed waveform then appears on U0221-40 (MOD IN), where it is sent to the RF board as previously described for transmit audio. A trunking connect tone would be generated in the same manner as a PL tone. 2-12 Theory of Operation 2.3.4.2 High Speed Data High speed data refers to the 3600 baud data waveforms, known as inbound signalling words (ISWs) used in a trunking system for high speed communication between the central controller and the radio. To generate an ISW, the µP first programs the ASFIC CMP (U0221) to the proper filter and gain settings. It then begins strobing U0221-19 (HSIO) with a pulse when the data is supposed to change states. U0221’s 5-3-2 state encoder, which is in a 2-state mode, is then fed to the post-limiter summer block and then the splatter filter. From that point, it is routed through the modulation attenuators and then out of the ASFIC CMP to the RF board. MPT 1327 and MDC are generated in much the same way as trunking ISW. However, in some cases these signals may also pass through a data pre-emphasis block in the ASFIC CMP. Also these signalling schemes are based on sending a combination of 1200 Hz and 1800 Hz tones only. Microphone audio is muted during high speed data signalling. 2.3.4.3 Dual Tone Multiple Frequency (DTMF) Data DTMF data is a dual tone waveform used during phone interconnect operation. It is the same type of tones which are heard when using a "Touch Tone" telephone. There are seven frequencies, with four in the low group (697, 770, 852, 941Hz) and three in the high group (1209, 1336, 1477Hz). The high-group tone is generated by the µP (U0101-44) strobing U0221-19 at six times the tone frequency for tones less than 1440Hz or twice the frequency for tones greater than 1440Hz. The low group tone is generated by the ASFIC CMP, controlled by the µP via SPI bus. Inside U0221 the lowgroup and high-group tones are summed (with the amplitude of the high group tone being approximately 2 dB greater than that of the low group tone) and then pre-emphasized before being routed to the summer and splatter filter. The DTMF waveform then follows the same path as described for high-speed data Theory of Operation 2.3.5 2-13 Receive Audio Circuits Refer to Figure 2-5 for the descriptions that follow. ACCESSORY CONNECTOR 11 FLT RX AUDIO J0501 1 AUDIO PA U0271 9 4 SPKR + 16 SPKR - 1 EXTERNAL SPEAKER 6 INT SPKR+ INT SPKRCONTROLHEAD CONNECTOR 3 INTERNAL SPEAKER 2 J0401 10 39 U IO URX OUT AUDIO 28 35 7 HANDSET AUDIO 41 IN IN OUT OPTION BOARD J0551 34 43 AUX RX VOLUME ATTEN. ASFIC_CMP U0221 FILTER AND DEEMPHASIS IN 7 DISC FROM AUDIO RF SECTION (IF IC) J0451 17 EXPANSION BOARD 2 DISC PL FILTER LIMITER LIMITER, RECTIFIER FILTER, COMPARATOR LS IO 18 SQUELCH CIRCUIT SQ DET CH ACT 16 17 84 83 MICRO CONTROLLER 80 U0101 85 Figure 2-5. Receive Audio Paths 2.3.5.1 Squelch Detect The squelch detect circuits are all contained within the ASFIC CMP as shown in Figure 2-5. The radio’s RF circuits are constantly producing an output (DISC AUDIO) at the discriminator IF IC. The output signal is applied to the ASFIC CMP’s squelch detect circuits DISC input (U0221, pin 2). The squelch signal entering the ASFIC CMP is amplified, filtered, attenuated, and rectified. It is then sent to a comparator to produce an active high signal (CH ACT). The squelch circuit produces the SQ DET signal at U0221, pin 17 from the CH ACT input signal. The state of CH ACT and SQ DET go from a low (logic 0) to a high (logic 1) when an RF carrier is detected. The CH ACT and SQ DET signals from the squelch circuit are applied to the µP pins 84 and 83 respectively. SQ DET is used to determine all audio mute/unmute decisions except for conventional scan. In this case CH ACT is a pre-indicator as it occurs slightly faster than SQ DET. 2-14 Theory of Operation 2.3.5.2 Audio Processing and Digital Volume Control The receiver audio signal (DISC AUDIO) enters the controller section from the IF IC where it is AC coupled by C0227 before entering the ASFIC CMP via the DISC input at U0221, pin 2. The signal is then applied to both the audio and the PL/DPL paths. The signal on the audio path is applied to a programmable amplifier, whose setting is based on the channel bandwidth being received, an LPF filter to remove any frequency components above 3000Hz, and HPF filter to strip off any sub-audible data below 300Hz. The recovered audio passes through a de-emphasis filter, if it is enabled, to compensate for pre-emphasis which is used to reduce the effects of FM noise. The audio then goes through the 8-bit programmable attenuator whose level is set depending on the value of the volume control. The resulting filtered audio signal is passed through an output buffer within the ASFIC CMP and exits the ASFIC CMP at the AUDIO output (U0221, pin 41). The µP programs the attenuator, using the SPI BUS, based on the volume setting. The minimum/ maximum settings of the attenuator are set by codeplug parameters. Since sub-audible signalling is summed with voice information on transmit, it must be separated from the voice information before processing. Any sub-audible signal enters the ASFIC CMP from the IF IC at DISC U0221, pin 2, then through the PL/DPL path. The signal first passes through one of two low pass filters, either PL low pass filter, or DPL/LST low pass filter. Either signal is then filtered, goes through a limiter, and exits the ASFIC CMP at LSIO (U0221, pin 18). At this point the signal appears as a square wave version of the sub-audible signal the radio received. The µP (U0101, pin 80) decodes the signal directly to determine if it is the tone/code currently active on that mode. 2.3.5.3 Audio Amplification Speaker (+) Speaker (-) The output of the ASFIC CMP’s digital volume pot (U0221, pin 41) is routed through dc blocking capacitor C0256 to a buffer formed by U0211, pin 1. Resistors R0256 and R0268 set the correct input level to the audio PA (U0271). This is necessary because the gain of the audio PA is 46 dB and the ASFIC CMP output is capable of overdriving the PA unless the maximum volume is limited. Resistor R0267 and capacitor C0267 increase frequency components below 350 Hz. The audio then passes through R0269 and C0272 which provides AC coupling and low frequency roll-off. C0273 provides high frequency roll-off as the audio signal is routed to audio power amplifier U0271, pins 1 and 9 which are both tied to the received audio. The audio power amplifier has one inverted and one non-inverted output that produces the differential audio output SPK+/SPK- (U0271, pins 4 and 6). The audio PA’s dc biases are not activated until the audio PA is enabled at pin 8. The audio PA is enabled via the ASFIC CMP (U0221, pin 38). When the base of Q0271 is low, the transistor is off and U0271-8 is high via pull-up resistor R0273, and the audio PA is ON. The voltage at U0273-8 must be above 8.5Vdc to properly enable the device. If the voltage is between 3.3 and 6.4V, the device is active, but has its input (U0273, pins 1 and 9) off. This is a mute condition used to prevent an audio pop when the PA is enabled. The SPK+ and SPK- outputs of the audio PA are dc biased and vary proportionately with FLT A+ (U0271, pin 7). FLT A+ of 11V yields a dc offset of 5V, and FLT A+ of 17V yields a dc offset of 8.5V. If either of these lines is shorted to ground, it is possible that the audio PA could be damaged. SPK+ and SPK- are routed to the accessory connector (J0501, pins 1 and 16) and to the control head connector (J0401, pins 2 and 3). Theory of Operation 2-15 2.3.5.4 Handset Audio Certain accessories have a self contained speaker which requires a different voltage level than that provided by U0271. For those devices, HANDSET AUDIO is available at control head connector J0401, pin 7. The received audio from the output of the ASFIC CMP’s digital volume attenuator and buffered by U0211, pin 1, is also routed to U0211, pin 9 where it is amplified by 20 dB. This is set by the 10k/ 100k combination of R0261 and R0262. This signal is routed from the output of the op amp U0211 to J0401-7. The control head sends this signal directly out to the microphone jack. The maximum value of this output is 6.6Vp-p. 2.3.5.5 Filtered Audio and Flat Audio The ASFIC CMP audio output at U0221, pin 39 is filtered and de-emphasized, but has not yet gone through the digital volume attenuator. From ASFIC CMP U0221, pin 39 the signal is routed via R0251 through gate U0251, pin 12 and AC coupled to U0211, pin 2. The gate controlled by ASFIC CMP port GCB3 (U0221, pin 35) selects between the filtered audio signal from the ASFIC CMP at pin 39 (URXOUT) or the unfiltered flat audio signal from the ASFIC CMP, U10, pin 10. Resistors R0251 and R0253 determine the gain of op amp U0211, pin 2 for the filtered audio while R0252 and R0253 determine the gain for the flat audio.The output of U0253, pin 7 is then routed to J0501, pin 11 via dc blocking capacitor C0542. Note that any volume adjustment of the signal on this path must be done by the accessory. 2.3.5.6 RX Secure Audio Option Discriminator audio, which is now encrypted audio, follows the normal receive audio processing until it is output from the ASFIC CMP UIO (U0221, pin 10), which is fed to the secure audio board at option connector J0551, pin 35. On the secure board, the encrypted signal is converted back to normal audio format, then fed back through J0551, pin 34 to AUX RX of the ASFIC CMP (U0221, pin 43). The signal then follows a path identical to the conventional receive audio, where it is filtered (0.3 - 3kHz) and deemphasized. The signal URX SND from the ASFIC CMP (U0221-39) also routed to option connector J0551, pin 28, is not used for the secure board, but for other option boards. 2.3.5.7 Option Board Receive Audio Unfiltered audio from the ASFIC CMP (U0221, pin 10) enters the option board at connector J0551, pin 35. Filtered audio from the ASFIC CMP URXOUT (U0221, pin 39) enters the option board at connector J0551, pin 28. On the option board, the signal is processed, then fed back through (J0551, pin 34) to AUX RX of the ASFIC CMP (U0221, pin 43). The signal then follows a path identical to conventional receive audio, where it is filtered (0.3 - 3kHz) and de-emphasized. 2-16 2.3.6 Theory of Operation Receive Signalling Circuits Refer to Figure 2-6 for the descriptions that follow. DATA FILTER AND DEEMPHASIS DET AUDIO DISCRIMINATOR AUDIO FROM RF SECTION (IF IC) 2 LIMITER HSIO 19 82 44 DISC MICRO CONTROLLER ASFIC_CMP U0221 FILTER LIMITER U0101 LSIO 18 80 85 PLEAP 8 PLCAP2 25 Figure 2-6. Receive Signalling Paths 2.3.6.1 Sub-Audible Data (PL/DPL) and High Speed Data Decoder The ASFIC CMP (U0221) filters and limits all received data. The data enters the ASFIC CMP at input DISC (U0221, pin 2). Inside U0221 the data is filtered according to data type (HS or LS), then it is limited to a 0-5V digital level. The MDC and trunking high speed data appear at U0221, pin 19, where it connects to the µP U0101, pin 82 The low speed limited data output (PL, DPL, and trunking LS) appears at U0221, pin 18, where it connects to the µP U0101, pin 80. The low speed data is read by the µP at twice the frequency of the sampling waveform; a latch configuration in the ASFIC CMP stores one bit every clock cycle. The external capacitors C0236, and C0244 set the low frequency pole for a zero crossings detector in the limiters for PL and HS data. The hysteresis of these limiters is programmed based on the type of received data. 2.3.6.2 Alert Tone Circuits When the software determines that it needs to give the operator an audible feedback for a good key press, or for a bad key press, or radio status (trunked system busy, phone call, circuit failures), it sends an alert tone to the speaker. It does so by sending SPI BUS data to U0221 which sets up the audio path to the speaker for alert tones. The alert tone itself can be generated in one of two ways: internally by the ASFIC CMP, or externally using the µP and the ASFIC CMP. The allowable internal alert tones are 304, 608, 911, and 1823Hz. In this case a code contained within the SPI BUS load to the ASFIC CMP sets up the path and determines the tone frequency, and at what volume level to generate the tone. (It does not have to be related to the voice volume setting). For external alert tones, the µP can generate any tone within the 100-3000Hz audio band. This is accomplished by the µP generating a square wave which enters the ASFIC CMP at U0221-19. Inside the ASFIC CMP this signal is routed to the alert tone generator The output of the generator is summed into the audio chain just after the RX audio de-emphasis block. Inside U0221 the tone is amplified and filtered, then passed through the 8-bit digital volume attenuator, which is typically loaded with a special value for alert tone audio. The tone exits at U022141 and is routed to the audio PA like receive audio. Theory of Operation 2-17 2.3.6.3 Voice Storage Option The Voice Storage (VS) option can be used to store audio signals coming from the receiver or from the microphone. Any stored audio signal can be played back over the radio’s speaker or sent out via the radio’s transmitter. The Voice Storage option can by placed on the controller section or on an additional option board which resides on option board connector J0551. Voice Storage IC U0301 provides all required functionality and is powered from 3.3 volts regulator U0351 which is powered from the regulated 5 volts. Dual shottky diode D0301 reduces the supply voltage for U0301 to 3 volts. The µP controls U0301 via SPI bus lines CLK (U0301-8), DATA (U0301-10) and MISO (U0301-11). To transfer data, the µP first selects the U0301 via address decoder U0141, line VS CS and U0301 pin 9. Then the µP sends data through line DATA and receives data through line MISO. Pin 2 (RAC) of U0301 indicates the end of a message row by a low state for 12.5 ms and connects to µP pin 52. A low at pin 5 (INT), which is connected to µP pin 55 indicates that the Voice Storage IC requires service from the µP. Audio, either from the radio’s receiver or from one of the microphone inputs, emerges the ASFIC CMP (U0221) at pin 43, is buffered by op-amp U0341-1, then enters the voice storage IC U0301 at pin 25. During playback, the stored audio emerges U0301 at pin 20. To transmit the audio signal, it is fed through resistive divider R0344 / R0345 and line VS MIC to input selector IC U0251. When this path is selected by the µP via ASFIC CMP port GCB 4, the audio signal enters the ASFIC CMP at pin 48 and is processed like normal transmit audio. To play the stored audio over the radio’s speaker, the audio from U0301 pin 20 is buffered by op-amp U0341-2 and fed via switch U0342 and line FLAT RX SND to ASFIC CMP pin 10 (UIO). In this case, this ASFIC CMP pin is programmed as input and feeds the audio signal through the normal receiver audio path to the speaker or handset. Switch U0342 is controlled by the µP via ASFIC CMP port GCB 4 and feeds the stored audio only to the ASFIC CMP port UIO when it is programmed as input. 2.4 UHF (403-470 MHz) Receiver Front-End The receiver is able to cover the UHF range from 403 to 470 MHz. It consists of four major blocks: front-end bandpass filters and preamplifier, • • • • First mixer 1st IF 2nd IF Receiver back-end Two varactor tuned bandpass filters perform antenna signal pre-selection. A cross over quad diode mixer converts the signal to the 1st IF of 44.85 MHz. Low side first injection is used. 2-18 Theory of Operation Pin Diode Antenna Switch RF Jack Harmonic Filter Varactor Tuned Filter Control Voltage from PCIC RF Amp Varactor Tuned Filter Mixer 1. Crystal Filter 1. IF Amp First LO from FGU 2. IF Amp 2. Crystal Filter Recovered Audio Demodulator Limiter RSSI 455kHz Filter (25kHz) 455kHz Filter (12.5kHz) Switch 455kHz Filter (12.5kHz) Switch 455kHz Filter (25kHz) Switch Switch Second LO BWSELECT Filter Bank Selection from Synthesizer IC Figure 2-7. UHF Receiver Block Diagram The 2-pole 44.85 MHz crystal filters in the 1st IF section and two pairs of 455 kHz ceramic filters in the 2nd IF section provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25 kHz channel spacing is selected via control line BWSELECT. The 2nd IF at 455 kHz is mixed, amplified, and demodulated in the IF IC. The processing of the demodulated audio signal is performed by an audio processing IC located in the controller section. Theory of Operation 2.4.1 2-19 Front-End Band-Pass Filters and Pre-Amplifier The received signal from the radio’s antenna connector is first routed through the harmonic filter and antenna switch, which are part of the RF power amplifier circuits, before being applied to the receiver pre-selector filter (C4001, C4002, D4001 and associated components). The 2-pole pre-selector filter tuned by the varactor diodes D4001 and D4002 pre-selects the incoming signal (RXIN) from the antenna switch to reduce spurious effects to following stages. The tuning voltage (FECTRL_1) ranging from 2 volts to 8 volts is controlled by pin 20 of PCIC (U4501) in the Transmitter section. A dual hot carrier diode (D4003) limits any inband signal to 0 dBm to prevent damage to the preamplifier. The RF pre-amplifier is an SMD device (Q4003) with collector base feedback to stabilize gain, impedance, and intermodulation. The collector current of approximately 11-16 mA is drawn from the 9.3 volt supply via L4003 and R4002. A 3dB pad (R4006,R4007,R4011 and R4008 - R4010) stabilizes the output impedance and intermodulation performance. A second 2-pole varactor tuned bandpass filter provides additional filtering of the amplified signal. The varactor diodes D4004 and D4005 are controlled by the same signal FECTRL_1, which controls the pre-selector filter. A following 1 dB pad (R4013 - R4015) stabilizes the output impedance and intermodulation performance. 2.4.2 First Mixer and 1st Intermediate Frequency (IF) The signal coming from the front-end is converted to the first IF (44.85 MHz) using a cross over quad diode mixer (D4051). Its ports are matched for incoming RF signal conversion to the 44.85 MHz IF using low side injection via matching transformers T4051 and T4052. The injection signal (RXINJ) coming from the RX VCO buffer (Q4332) is filtered by the lowpass filter consisting of (L4053, L4054, C4053 - C4055) followed by a matching transformer T4052 and has a level of approximately 15dBm. The mixer IF output signal (IF) from transformer T4501pin 2 is fed to the first two pole crystal filter FL3101. The filter output in turn is matched to the following IF amplifier. The IF amplifier Q3101 is actively biased by a collector base feedback (R3101, R3106) to a current drain of approximately 5 mA drawn from the 5 volt supply. Its output impedance is matched to the second two pole crystal filter FL3102. The signal is further amplified by a preamplifier (Q3102) before going into pin 1 of IFIC (U3101). A dual hot carrier diode (D3101) limits the filter output voltage swing to reduce overdrive effects at RF input levels above -27 dBm. 2.4.3 2nd Intermediate Frequency (IF) and Receiver Back-End The 44.85 MHz 1st IF signal from the second IF amplifier feeds the IF IC (U3101) at pin1. Within the IF IC the 44.85 MHz high IF signal mixes with the 44.395 MHz second local oscillator (2nd LO) to produce the low IF signal at 455 kHz. The 2nd LO frequency is determined by crystal Y3101. The 2nd IF signal is amplified and filtered by an external pair of 455 kHz ceramic filters (FL3112, FL3114) for 20/25 kHz channel spacing or FL3111 and FL3113/F3115 for 12.5 kHz channel spacing. These pairs are selectable via BWSELECT. The filtered output from the ceramic filters is applied to the limiter input pin of the IF IC (pin 14). The IF IC contains a quadrature detector using a ceramic phase-shift element (Y3102) to provide audio detection. Internal amplification provides an audio output level of 120 mV rms (at 60% deviation) from U3103 pin 8 (DISCAUDIO) which is fed to the ASFIC_CMP (U0221) pin 2 (part of the Controller circuits). A received signal strength indicator (RSSI) signal is available at U3101 pin 5, having a dynamic range of 70 dB. The RSSI signal is interpreted by the µP (U0101 pin 63) and is available at accessory connector J0501-15. 2-20 2.5 Theory of Operation Transmitter Power Amplifier (PA) 40 W The radio’s 40W power amplifier (PA) is a four stage amplifier used to amplify the output from the VCOBIC to the radio transmit level. It consists of the following four stages in the line-up. The first stage is a LDMOS predriver (U4401) that is controlled by pin 4 of PCIC (U4501) via Q4473 (CNTLVLTG). It is followed by another LDMOS stage (Q4421), an LDMOS stage (Q4431), and a bipolar final stage (Q4441). Antenna Pin Diode Antenna Switch From VCO Controlled Stage PA Driver PA-Final Stage Harmonic Filter RF Jack Power Sense Bias 2 AS FI C _ C M P SPI BUS Bias 1 Vcontrol PA PWR SET PCIC Temperature Sense To Microprocessor To Microprocessor Figure 2-8. UHF Transmitter Block Diagram Device Q4401 is surface mounted. Q4421, Q4431 and Q4441 are directly attached to the heat sink. 2.5.1 Power Controlled Stage The first stage (U4401) amplifies the RF signal from the VCO (TXINJ) and controls the output power of the PA. The output power of the transistor U4401 is controlled by a voltage control line feed from the PCIC pin4(U4501). The control voltage simultaneously varies the bias of two FET stages within U4401. This biasing point determines the overall gain of U4401 and therefore its output drive level to Q4421, which in turn controls the output power of the PA. In receive mode the voltage control line is at ground level and turns off Q4473 which in turn switches off the biasing voltage to U4401. 2.5.2 Pre-Driver Stage The next stage is a 13dB gain LDMOS device (Q4421) which requires a positive gate bias and a quiescent current flow for proper operation. The voltage of the line PCIC_MOSBIAS_1 is set in transmit mode by PCIC pin 24 and fed to the gate of Q4421 via the resistive network R4407, R4408, R4416 and R4415. The bias voltage is tuned in the factory. Theory of Operation 2.5.3 2-21 Driver Stage The following stage is an enhancement-mode N-Channel MOSFET device (Q4431) providing a gain of 10dB. This device also requires a positive gate bias and a quiescent current flow for proper operation. The voltage of the line Bias_2_UHF_PA_1 is set in transmit mode by the ASFIC and fed to the gate of Q4431 via the resistive network R4630, R4631, and R4632. This bias voltage is also tuned in the factory. If the transistor is replaced, the bias voltage must be tuned using the Customer Programming Software (CPS). Care must be taken not to damage the device by exceeding the maximum allowed bias voltage. The device’s drain current is drawn directly from the radio’s dc supply voltage input, A+, via L4421. 2.5.4 Final Stage The final stage uses the bipolar device Q4441. The device’s collector current is also drawn from the radio’s dc supply voltage input. To maintain class C operation, the base is dc-grounded by a series inductor (L4441) and a bead (L4440). A matching network consisting of C5541-C5544 and two striplines transform the impedance to 50 Ohms and feeds the directional coupler. 2.5.5 Bi-Directional Coupler The Bi-directional coupler is a microstrip printed circuit, which couples a small amount of the forward and reverse power of the RF power from Q4441. The coupled signal is rectified to an output power proportional dc voltage by the diodes D4451 & D4452 and sent to the RFIN of the PCIC. The PCIC controls the gain of stage U4401 as necessary to hold this voltage constant. This ensures the forward power out of the radio is held to a constant value. 2.5.6 Antenna Switch The antenna switch utilizes the existing dc feed (A+) to the last stage device (Q4441). Basic operation is to have both PIN diodes D4471 and D4472 turns on during key-up by forward biasing them. It is achieve by pulling down the voltage at the cathode end of D4472 to around 11.8V (0.7V drop across each diode). The current through the diodes needs to be set around 80mA to fully open the transmit path through resistor R4496. Q4472 is a current source controlled by Q4471 and is eventually connected to pin ANO of PCIC. VR4471 ensures the voltage at the resistor R4511 never exceeds 5.6V 2.5.7 Harmonic Filter Inductors L4491, L4492, L4493 and capacitors C4448, C4493,C4494, C4496 and C4498 form a lowpass filter to attenuate harmonic energy from the transmitter. R4491 is used to drain any electrostatic charges that might otherwise build up on the antenna. The harmonic filter also prevents high level RF signals above the receiver passband from reaching the receiver circuits, improving spurious response rejection. 2.5.8 Power Control The transmitter uses the Power Control IC (PCIC, U4501) to control the power output of the radio. A portion of the forward RF power from the transmitter is sampled by the bi-directional coupler and rectified, to provide a dc voltage to the RFIN port of the PCIC (pin 1) which is proportional to the sampled RF power. The PCIC has internal digital to analog converters (DACs) which provide the reference voltage of the control loop. The reference voltage level is programmable through the SPI line of the PCIC. This reference voltage is proportional to the desired power setting of the transmitter, and is factory programmed at several points across the frequency range of the transmitter to offset frequency response variations of the transmitter’s power detector circuits. 2-22 Theory of Operation The PCIC provides a dc output voltage at pin 4 (INT) and applied as CNTLVLTG to the power-adjust input pin of the first transmitter stage U4401. This adjusts the transmitter power output to the intended value. Variations in forward or reflected transmitter power cause the dc voltage at pin 1 to change, and the PCIC adjusts the control voltage above or below its nominal value to raise or lower output power. Capacitors C4502-4, in conjunction with resistors and integrators within the PCIC, control the transmitter power-rise (key-up) and power-decay (de-key) characteristic to minimize splatter into adjacent channels. U4502 is a temperature-sensing device, which monitors the circuit board temperature in the vicinity of the transmitter driver and final devices, and provides a dc voltage to the PCIC (TEMP, pin 29) proportional to temperature. If the dc voltage produced exceeds the set threshold in the PCIC, the transmitter output power is reduced so as to reduce the transmitter temperature. 2.6 Frequency Synthesis The synthesizer subsystem consists of the reference oscillator (Y4261 or Y4262), the low voltage fractional-N synthesizer (LVFRAC-N, U4201), and the Voltage Controlled Oscillator VCO. 2.6.1 Reference Oscillator The reference oscillator (Y4262) contains a temperature compensated crystal oscillator with a frequency of 16.8 MHz. An Analog-to-Digital (A/D) converter internal to U4201 (LVFRAC-N) and controlled by the µP via serial interface (SRL) sets the voltage at the warp output of U4201, pin 25 to set the frequency of the oscillator. The output of the oscillator (pin 3 of Y4262) is applied to pin 23 (XTAL1) of U4201 via an RC series combination. In applications where less frequency stability is required the oscillator inside U4201 is used along with an external crystal Y4261, varactor diode D4261, C4261, C4262 and R4262. In this case, Y4262, R4263, C4235 and C4251 are not used. When Y4262 is used, Y4261, D4261, C4261, C4262 and R4262 are not used, and C4263 is increased to 0.1 uF. 2.6.2 Fractional-N Synthesizer The LVFRAC-N synthesizer IC (U4201) consists of a pre-scaler, a programmable loop divider, control divider logic, a phase detector, a charge pump, an A/D converter for low frequency digital modulation, a balanced attenuator to balance the high frequency analog modulation and low frequency digital modulation, a 13V positive voltage multiplier, a serial interface for control, and finally a super filter for the regulated 5 volts. A voltage of 5V applied to the super filter input (U4201 pin 30) supplies an output voltage of 4.5 Vdc (VSF) at pin 28. It supplies the VCO, VCO modulation bias circuit (via R4322) and the synthesizer charge pump resistor network (R4251, R4252). The synthesizer supply voltage is provided by the 5V regulator U4211. In order to generate a high voltage to supply the phase detector (charge pump) output stage at pin VCP (U5701-32), a voltage of 13 Vdc is being generated by the positive voltage multiplier circuitry (D4201, C4202, C4203). This voltage multiplier is basically a diode capacitor network driven by two signals (1.05MHz) 180 degrees out of phase (U4201-14 and -15). Theory of Operation 2-23 DATA (U0101 PIN 100) CLOCK (U0101 PIN 1) CSX (U0101 PIN 2) MOD IN (U0221 PIN 40) 7 8 9 10 13, 30 +5V (U4211 PIN 1) +5V (U4211 PIN 1) 5, 20, 34, 36 23 REFERENCE OSCILLATOR 24 FREFOUT CLK GND CEX MODIN 4 LOCK (U0101 PIN 56) 19 VCC, DC5V IOUT IADAPT VDD, DC5V MODOUT 41 XTAL1 U4201 XTAL2 FRACTIONAL-N SYNTHESIZER WARP 32 PREIN LOW VOLTAGE VCP VMULT2 14 AUX4 AUX2 3 1 (NU) AUX3 2 SFOUT FREF (U0221 PIN 34) 6, 22, 33, 44 43 45 25 47 VOLTAGE MULTIPLIER LOCK DATA 2-POLE LOOP FILTER VCO Bias STEERING LINE LO RF INJECTION TRB VOLTAGE CONTROLLED FILTERED 5V 28 OSCILLATOR BIAS1 40 VMULT1 TX RF INJECTION (1ST STAGE OF PA) AUX1 BIAS2 39 15 48 BWSELECT To IF Section PRESCALER IN Figure 2-9. UHF Synthesizer Block Diagram Output LOCK (U4201-4) provides information about the lock status of the synthesizer loop. A high level at this output indicates a stable loop. IC U4201 provides the 16.8 MHz reference frequency at pin 19. The serial interface (SRL) is connected to the µP via the data line DATA (U4201-7), clock line CLK (U4201-8), and chip enable line CSX (U4201-9). 2.6.3 Voltage Controlled Oscillator (VCO) The Voltage Controlled Oscillator (VCO) consists of the VCO buffer IC (VCOBIC, U4301), the TX and RX tank circuits, the external RX buffer stages, and the modulation circuits. The VCOBIC together with Fractional-N synthesizer (U4201) generates the required frequencies in both transmit and receive modes. The TRB line (U4301 pin 19) determines which tank circuits and internal buffers are to be enabled. A high level on TRB enables TX tank and TX output (pin 10), and a low enables RX tank and RX output (pin 8). A sample of the signal from the enabled output is routed from U4301 pin 12 (PRESC_OUT), via a low pass filter, to pin 32 of U4201 (PREIN). 2-24 Theory of Operation A steering line voltage (VCTRL) between 3.0V and 10.0V at varactor diode CR4311 will tune the full TX frequency range (TXINJ) from 403 MHz to 470 MHz, and at varactor diodes CR4301, CR4302 and CR4303 will tune the full RX frequency range (RXINJ) from 358 MHz to 425 MHz. The tank circuits uses the Hartley configuration for wider bandwidth. For the RX tank circuit, an external transistor Q4301 is used in conjunction with the internal transistor for better side-band noise. AUX3 (U4201 Pin2) U4201 Pin 32 Prescaler Out TRB IN Pin 20 Rx-SW Pin7 Tx-SW Pin13 Pin 19 Pin 12 TX/RX/BS Switching Network LO RF INJECTION Vcc-Superfilter (U4201 Pin28) Pin3 Presc Matching Network Q4332 U4301 VCOBIC Low Pass Filter Collector/RF in Steer Line Voltage (VCTRL) Pin4 RX RX RX Tank RX VCO Circuit Q4301 Rx Active Bias Pin5 Pin8 (U4201 Pin28) Pin14 Pin6 TX TX Tank TX VCO Circuit Tx Active Bias Pin16 TX Pin10 VCC Buffers TX RF Injection Attenuator Pin15 Vsens Circuit Pin18 Vcc-Logic Pin2 Pin1 Rx-I adjust Tx-I adjust Pins 9,11,17 (U4201 Pin28) Figure 2-10. UHF VCO Block Diagram The external RX buffers (Q4332) are enabled by a high at U4201 pin 3 (AUX4) via transistor switch Q4333. In TX mode the modulation signal (VCOMOD) from the LVFRAC-N synthesizer IC (U4201 pin41) is applied to the modulation circuits CR4321, R4321, R4322 and C4324. These modulate the TX VCO frequency via coupling capacitor C4321. Varactor CR4321 is biased for linearity from the VSF. Theory of Operation 2.6.4 2-25 Synthesizer Operation The complete synthesizer subsystem comprises mainly of a low voltage FRAC-N (LVFRACN) IC, Reference Oscillator (crystal oscillator with temperature compensation), charge pump circuits, loop filter circuits, and dc supply. The output signal (PRESC_OUT) of the VCOBIC (U4301, pin12) is fed to of U4201, pin 32 (PREIN) via a low pass filter (C4229,L4225,C4226) which attenuates harmonics and provides correct level to close the synthesizer loop. The pre-scaler in the synthesizer (U4201) is basically a dual modulus pre-scaler with selectable divider ratios. The divider ratio of the pre-scaler is controlled by the loop divider, which in turn receives its inputs via the SRL. The output of the pre-scaler is applied to the loop divider. The output of the loop divider is connected to the phase detector, which compares the loop divider´s output signal with the reference signal.The reference signal is generated by dividing down the signal of the reference oscillator (Y4261 or Y4262). The output signal of the phase detector is a pulsed dc signal which is routed to the charge pump. The charge pump outputs a current at pin 43 of U4201 (IOUT). The loop filter (which consists of R4221R4223, C4221-C4225,L4221) transforms this current into a voltage that is applied to the varactor diodes CR4311 for transmit, CR4301, CR4302 & CR4303 for receive and alters the output frequency of the VCO.The current can be set to a value fixed in the LVFRAC-N IC or to a value determined by the currents flowing into BIAS 1 (U4201-40) or BIAS 2 (U4201-39). The currents are set by the value of R4251 or R4252 respectively. The selection of the three different bias sources is done by software programming. To reduce synthesizer lock time when new frequency data has been loaded into the synthesizer the magnitude of the loop current is increased by enabling the IADAPT (U4201-45) for a certain software programmable time (Adapt Mode). The adapt mode timer is started by a low to high transient of the CSX line. When the synthesizer is within the lock range the current is determined only by the resistors connected to BIAS 1, BIAS 2, or the internal current source. A settled synthesizer loop is indicated by a high level of signal LOCK (U4201-4). LOCK (U4201-4) signal is routed to one of the µP´s ADCs input U101-56. From the voltage the µP determines whether LOCK is active. In order to modulate the PLL the two spot modulation method is utilized Via pin 10 (MODIN) on U4201. The audio signal is applied to both the A/D converter (low frequency path) as well as the balanced attenuator (high frequency path). The A/D converter converts the low frequency analog modulating signal into a digital code which is applied to the loop divider, thereby causing the carrier to deviate. The balance attenuator is used to adjust the VCO’s deviation sensitivity to high frequency modulating signals. The output of the balance attenuator is present at the MODOUT port (U4201-41) and connected to the VCO modulation diode CR4321 via R4321, C4325. 2-26 VHF (136-174MHz) Receiver Front-End The receiver is able to cover the VHF range from 136 to 174 MHz. It consists of four major blocks: front-end bandpass filters and pre-amplifier, first mixer, 1st IF, 2nd IF, and receiver back-end. Two varactor-tuned bandpass filters perform antenna signal pre-selection. A cross over quad diode mixer converts the signal to the first IF of 44.85 MHz. High-side injection is used. RF Jack Pin Diode Antenna Switch Varactor Tuned Filter Control Voltage from PCIC RF Amp Varactor Tuned Filter Mixer 1. Crystal Filter 1. IF Amp First LO from FGU 2. IF Amp 2. Crystal Filter Recovered Audio Demodulator Limiter RSSI IF 455kHz Filter (25kHz) 455kHz Filter (12.5kHz) Switch 455kHz Filter (12.5kHz) Switch 455kHz Filter (25kHz) Switch Second LO Switch 2.7 Theory of Operation Filter Bank Selection from Synthesizer IC Figure 2-11. VHF Receiver Block Diagram There are two 2-pole 44.85 MHz crystal filters in the 1st IF section and 2 pairs of 455 kHz ceramic filters in the 2nd IF section to provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25kHz channel spacing is selected via control line BWSELECT. The second IF at 455 kHz is mixed, amplified and demodulated in the IF IC. The processing of the demodulated audio signal is performed by an audio processing IC located in the controller section. Theory of Operation 2.7.1 2-27 Front-End Band-Pass Filters and Pre-Amplifier The received signal from the radio’s antenna connector is first routed through the harmonic filter and antenna switch, which are part of the RF power amplifier circuits, before being applied to the receiver pre-selector filter (C3001, C3002, D3001 and associated components). The 2-pole pre-selector filter tuned by the dual varactor diode D3001 pre-selects the incoming signal (RXIN) from the antenna switch to reduce spurious effects to following stages. The tuning voltage (FECTRL_1) ranging from 2 volts to 8 volts is controlled by pin 20 of PCIC (U3501) in the Transmitter section. A dual hot carrier diode (D3003) limits any inband signal to 0 dBm to prevent damage to the pre-amplifier. The RF pre-amplifier is a surface mount device (SMD) Q3001 with collector-base feedback to stabilize gain, impedance, and intermodulation. Transistor Q3002 compares the voltage drop across resistor R3002 with a fixed base voltage from divider R3011, R3000 and R3012, and adjusts the base current of Q3001 as necessary to maintain its collector current constant at approximately 15-20 mA. Operating voltage is from the regulated 9.3V supply (9V3). During transmit, 9.1 volts (K9V1) turns off both transistors Q3002 and Q3001. This protects the RF pre-amplifier from excessive dissipation during transmit mode. A following 3dB pad (R3006 – R3008 and R3016 – R3018) stabilizes the output impedance and intermodulation performance. A second 2-pole varactor tuned bandpass filter provides additional filtering of the amplified signal. The dual varactor diode D3004 is controlled by the same signal FECTRL_1, which controls the preselector filter. 2.7.2 First Mixer and 1st Intermediate Frequency (IF) The signal coming from the front-end is converted to the 1st IF frequency of 44.85 MHz using a cross over quad diode mixer (D3031). Its ports are matched for incoming RF signal conversion to the 44.85 MHz IF using high side injection. The high-side injection signal (RXINJ) from the frequency synthesizer circuit has a level of approximately +13 dBm and is injected via matching transformer T3002. The IF output signal (IF) from transformer T3001 pin 2 is fed to the first 2- pole crystal filter FL3101. The filter output in turn is matched to IF amplifier Q3101 which is actively biased by a collector base feedback (R3101, R3106) to a current drain of approximately 5 mA drawn from the 5 volt supply. Its output impedance is matched to the second 2-pole crystal filter FL3102. The signal is further amplified by a preamplifier (Q3102) before going into pin 1 of IFIC (U3101). A dual hot carrier diode (D3101) limits the filter output voltage swing to reduce overdrive effects at RF input levels above -27 dBm. 2.7.3 2nd Intermediate Frequency (IF) and Receiver Back-End The 44.85 MHz 1st IF signal from the second IF amplifier feeds the IF IC (U3101) at pin1. Within the IF IC, the 44.85 MHz high IF signal mixes with the 44.395 MHz second local oscillator (2nd LO) to produce the 2nd IF signal at 455 kHz. The 2nd LO frequency is determined by crystal Y3101. The 2nd IF signal is amplified and filtered by an external pair of 455 kHz ceramic filters FL3112, FL3114 for 20/25 kHz channel spacing or FL3111, FL3113/F3115 for 12.5 kHz channel spacing. These pairs are selectable via BWSELECT. The filtered output from the ceramic filters is applied to the limiter input pin of the IF IC (pin 14). The IF IC contains a quadrature detector using a ceramic phase-shift element (Y3102) to provide audio detection. Internal amplification provides an audio output level of 120 mV rms (at 60% deviation) from U3101 pin 8 (DISCAUDIO) which is fed to the ASFIC_CMP (U0221) pin 2 (part of the Controller circuits). A received signal strength indicator (RSSI) signal is available at U3101, pin 5, having a dynamic range of 70 dB. The RSSI signal is interpreted by the µP (U0101, pin 63) and in addition is available at accessory connector J0501-15. 2-28 2.8 Theory of Operation Transmitter Power Amplifier (PA) 45 W The radio’s 45 W PA is a four-stage amplifier used to amplify the output from the VCOBIC to the radio transmit level. The line-up consists of three stages which utilize LDMOS and VMOS technology, followed by a final stage using a bipolar device. The gain of the first stage (U3401) is adjustable, controlled by pin 4 of PCIC (U3501) via Q3501 and Q3502 (VCONT). It is followed by an LDMOS pre-driver stage (Q3421), a VMOS driver stage (Q3431) and a bipolar final stage (Q3441). Antenna Pin Diode Antenna Switch From VCO Controlled Stage PA Driver PA-Final Stage Harmonic Filter RF Jack Power Sense Bias 2 AS FI C _ C M P SPI BUS Bias 1 Vcontrol PA PWR SET PCIC Temperature Sense To Microprocessor To Microprocessor Figure 2-12. VHF Transmitter Block Diagram Devices U3401 and Q3421 are surface mounted. The remaining devices are directly attached to the heat sink. 2.8.1 Power Controlled Stage The first stage (U3401) is a 20 dB gain integrated circuit containing two LDMOS FET amplifier stages. It amplifies the RF signal from the VCO (TXINJ). The output power of stage U3401 is controlled by a dc voltage applied to pin 1 from the power control circuit (U3501 pin 4, with transistors Q3501 and Q3502 providing current gain and level-shifting). The control voltage simultaneously varies the bias of two FET stages within U3401. This biasing point determines the overall gain of U3401 and therefore its output drive level to Q3421, which in turn controls the output power of the PA. In receive mode the voltage control line is at ground level and turns off Q3501-2, which in turn switches off the biasing voltage to U3401. 2.8.2 Pre-Driver Stage The next stage is an LDMOS device (Q3421) providing a gain of +13 dB. This device requires a positive gate bias and a quiescent current flow for proper operation. The voltage of the line PCIC_MOSBIAS_1 is set during transmit mode by the PCIC pin 24, and fed to the gate of Q3421 via the resistive network R3410, R3415, and R3416. The bias voltage is factory tuned. Theory of Operation 2.8.3 2-29 Driver Stage The following stage is an enhancement-mode N-Channel MOSFET device (Q3431) providing a gain of 10 dB. This device also requires a positive gate bias and a quiescent current flow for proper operation. The voltage of the line MOSBIAS_2 is set in transmit mode by the ASFIC and fed to the gate of Q3431 via the resistive network R3404, R3406, and R3431-5. This bias voltage is also tuned in the factory. If the transistor is replaced, the bias voltage must be tuned using the Customer Programming Software (CPS). Care must be taken not to damage the device by exceeding the maximum allowed bias voltage. The device’s drain current is drawn directly from the radio’s dc supply voltage input, PASUPVLTG, via L3431 and L3432. 2.8.4 Final Stage The final stage uses bipolar device Q3441. The device’s collector current is also drawn from the radio’s dc supply voltage input. To maintain class C operation, the base is dc-grounded by a series inductor (L3441) and a bead (L3442). A matching network consisting of C3446-52, C3467, L34445, and two striplines, transforms the impedance to approximately 50 ohms and feeds the directional coupler. 2.8.5 Directional Coupler The directional coupler is a microstrip printed circuit, which couples a small amount of the forward and reflected power delivered by Q3441. The coupled signals are rectified by D3451-2 and combined by R3463-4. The resulting dc voltage is proportional to RF output power and feeds the RFIN port of the PCIC (U3501, pin 1). The PCIC controls the gain of stage U3401 as necessary to hold this voltage constant, thus ensuring the forward power out of the radio to be held to a constant value. An abnormally high reflected power level, such as may be caused by a damaged antenna, also causes the dc voltage applied to the PCIC to increase, and this will cause a reduction in the gain of U3401, reducing transmitter output power to prevent damage to the final device due to an improper load. 2.8.6 Antenna Switch The antenna switch consists of two PIN diodes, D3471 and D3472. In the receive mode, both diodes are off. Signals applied at the antenna jack J3401 are routed, via the harmonic filter, through network L3472, C3474 and C3475, to the receiver input. In the transmit mode, the keyed 9 volts turns on Q3471 which enables current sink Q3472, set to 96 mA by R3473 and VR3471. This completes a dc path from PASUPVLTG, through L3473, D3471, L3477, L3472, D3472, L3471, R3474 and the current sink, to ground. Both diodes are forward biased into conduction. The transmitter RF from the directional coupler is routed via D3471 to the harmonic filter and antenna jack. D3472 also conducts, shunting RF power and preventing it from reaching the receiver port (RXIN). L3472 is selected to appear as a broadband guarter-wave transmission line, making the short circuit presented by D3472 appear as an open circuit at the junction of D3472 and the receiver path. 2.8.7 Harmonic Filter Components L3491-L3494 and C3490-C3498 form a nine-pole Chebychev low-pass filter to attenuate harmonic energy of the transmitter. R3490 is used to drain electrostatic charge that might otherwise build up on the antenna. The harmonic filter also prevents high level RF signals above the receiver passband from reaching the receiver circuits, improving spurious response rejection. 2-30 2.8.8 Theory of Operation Power Control The transmitter uses the power control IC (PCIC, U3501) to control the power output of the radio. A portion of the forward and reflected RF power from the transmitter is sampled by the directional coupler, rectified and summed, to provide a dc voltage to the RFIN port of the PCIC (pin 1) which is proportional to the sampled RF power. The ASFIC contains a digital to analog converter (DAC) which provides a reference voltage of the control loop to the PCIC via R3517. The reference voltage level is programmable through the SPI line of the PCIC. This reference voltage is proportional to the desired power setting of the transmitter, and is factory programmed at several points across the frequency range of the transmitter to offset frequency response variations of the transmitter’s power detector circuit. The PCIC provides a dc output voltage at pin 4 (INT) which is amplified and shifted in dc level by stages Q3501 and Q3502. The 0 to 4 Vdc range at U1503, pin 4 is translated to a 0 to 8.5 Vdc range at the output of Q3501, and applied as VCONT to the power-adjust input pin of the first transmitter stage U3401. This adjusts the transmitter power output to the intended value. Variations in forward or reflected transmitter power cause the dc voltage at pin 1 to change, and the PCIC adjusts the control voltage above or below its nominal value to raise or lower output power. Capacitors C3502-4, in conjunction with resistors and integrators within the PCIC, control the transmitter power-rise (key-up) and power-decay (de-key) characteristic to minimize splatter into adjacent channels. U3502 is a temperature-sensing device, which monitors the circuit board temperature in the vicinity of the transmitter driver and final devices, and provides a dc voltage to the PCIC (TEMP, pin 29) proportional to temperature. If the dc voltage produced exceeds the set threshold in the PCIC, the transmitter output power is reduced so as to reduce the transmitter temperature. 2.9 Frequency Synthesis The frequency synthesizer subsystem consists of the reference oscillator (Y3261 or Y3262), the Low Voltage Fractional-N synthesizer (LVFRAC-N, U3201), and the voltage-controlled oscillators and buffer amplifiers (U3301, Q3301-2 and associated circuits). 2.9.1 Reference Oscillator The reference oscillator (Y3262) contains a temperature compensated crystal oscillator with a frequency of 16.8 MHz. An analog-to-digital (A/D) converter internal to U3201 (LVFRAC-N) and controlled by the µP via serial interface (SRL) sets the voltage at the warp output of U3201 (pin 25) to set the frequency of the oscillator. The output of the oscillator (U3262 pin 3) is applied to pin 23 (XTAL1) of U3201 via R3263 and C3235. In applications were less frequency stability is required, the oscillator inside U3201 is used along with an external crystal Y3261, varactor diode D3261, C3261, C3262 and R3262. In this case, Y3262, R3263, C3235 and C3251 are not used. When Y3262 is used, Y3261, D3261, C3261, C3262 and R3262 are not used, and C3263 is increased to 0.1 uF. 2.9.2 Fractional-N Synthesizer The LVFRAC-N synthesizer IC (U3201) consists of a pre-scaler, a programmable loop divider, control divider logic, a phase detector, a charge pump, an A/D converter for low frequency digital modulation, a balance attenuator to balance the high frequency analog modulation and low frequency digital modulation, a 13 volt positive voltage multiplier, a serial interface for control, and finally a super filter for the regulated 5 volts. Theory of Operation 2-31 DATA (U0101 PIN 100) CLOCK (U0101 PIN 1) CSX (U0101 PIN 2) MOD IN (U0221 PIN 40) 7 8 9 10 13, 30 +5V (U3211 PIN 1) +5V (U3211 PIN 1) 5, 20, 34, 36 23 REFERENCE OSCILLATOR 24 FREFOUT CLK GND CEX MODIN 4 LOCK (U0101 PIN 56) 19 VCC, DC5V 43 45 VDD, DC5V MODOUT 41 XTAL1 U3201 XTAL2 FRACTIONAL-N SYNTHESIZER WARP 32 PREIN LOW VOLTAGE VCP VMULT2 14 AUX4 AUX2 3 1 AUX3 2 SFOUT BIAS1 VMULT1 FREF (U0221 PIN 34) 6, 22, 33, 44 IOUT IADAPT 25 47 VOLTAGE MULTIPLIER LOCK DATA 2-POLE LOOP FILTER LO RF INJECTION VOLTAGE 28 FILTERED 5V CONTROLLED OSCILLATOR 40 TX RF INJECTION (1ST STAGE OF PA) AUX1 BIAS2 39 15 48 STEERING LINE TRB PRESCALER IN Figure 2-13. VHF Synthesizer Block Diagram A voltage of 5V applied to the super filter input (U3201 pin 30) supplies an output voltage of 4.5 Vdc (VSF) at pin 28. It supplies the VCO, VCO modulation bias circuit (via R3363) and the synthesizer charge pump resistor network (R3251, R3252). The synthesizer supply voltage is provided by the 5V regulator U3211. In order to generate a high voltage to supply the phase detector (charge pump) output stage at pin VCP (U3201-47), a voltage of 13 Vdc is being generated by the positive voltage multiplier circuits (D3201, C3202, C3203). This voltage multiplier is basically a diode capacitor network driven by two signals (1.05MHz) 180 degrees out of phase signals (U3201-14 and -15). Output LOCK (U3201-4) provides information about the lock status of the synthesizer loop. A high level at this output indicates a stable loop. IC U3201 provides the 16.8 MHz reference frequency at pin 19. The serial interface (SRL) is connected to the µP via the data line DATA (U3201-7), clock line CLK (U3201-8), and chip enable line CSX (U3201-9). 2-32 2.9.3 Theory of Operation Voltage Controlled Oscillator (VCO) The Voltage Controlled Oscillator (VCO) consists of the VCO/Buffer IC (VCOBIC, U3301), the TX and RX tank circuits, the external RX buffer stages, and the modulation circuits. AUX3 (U3201 Pin2) U3201 Pin 32 Prescaler Out TRB IN Pin 20 Rx-SW Pin7 Tx-SW Pin13 Pin 19 Pin 12 TX/RX/BS Switching Network LO RF INJECTION Vcc-Superfilter (U3201 Pin28) Pin3 Presc U3301 VCOBIC Matching Network Q3301 Low Pass Filter Collector/RF in Steer Line Voltage (VCTRL) Pin4 RX RX RX Tank RX VCO Circuit Q3304 Pin5 TX VCO Circuit Pin8 (U3211 Pin1) Pin14 Pin6 TX Tank Rx Active Bias TX Tx Active Bias Pin16 TX Pin10 VCC Buffers TX RF Injection Attenuator Pin15 Vsens Circuit Pin18 Vcc-Logic Pin2 Pin1 Rx-I adjust Tx-I adjust Pins 9,11,17 (U3211 Pin1) Figure 2-14. VHF VCO Block Diagram The VCOBIC together with the Fractional-N synthesizer (U3201) generates the required frequencies in both the transmit and receive modes. The TRB line (U3301, pin 19) determines which tank circuits and internal buffers are to be enabled. A high level on TRB enables the TX tank and TX output (pin 10), and a low enables the RX tank and RX output (pin 8). A sample of the signal from the enabled RF output is routed from U3301, pin 12 (PRESC_OUT), via a low pass filter, to U3201, pin 32 (PREIN). A steering line voltage (VCTRL) between 2.5 volts and 11 volts at varactor diode D3361 tune the full TX frequency range (TXINJ) from 136 MHz to 174 MHz, and varactor diode D3341 tunes the full RX frequency range (RXINJ) from 181 MHz to 219 MHz. The RX tank circuit uses a Hartley configuration for wider bandwidth. For the RX tank circuit, an external transistor Q3304 is used for better side-band noise. Theory of Operation 2-33 The external RX buffers (Q3301 and Q3302) are enabled by a high at U3301, pin 7 (RX_SWITCH) via transistor switch Q3303. In the TX mode, the modulation signal (VCOMOD) from the LVFRAC-N synthesizer IC (U3201 pin 41) is applied to varactor diode D3362, which modulates the TX VCO frequency via capacitor C3362. Varactor D3362 is biased for linearity from the VSF. 2.9.4 Synthesizer Operation The complete synthesizer subsystem consists of the low voltage FRAC-N (LVFRACN), reference oscillator (a crystal oscillator with temperature compensation), charge pump circuit, loop filter circuit and a dc supply. The output signal PRESC from the VCOBIC (U3301 pin 12) is fed to U3201 pin 32 (PREIN) via a low pass filter (C3318, L3318 and C3226) which attenuates harmonics and provides the correct level to close the synthesizer loop. The pre-scaler in the synthesizer (U3201) is a dual modulus type with selectable divider ratios. The divider ratio of the pre-scaler is controlled by the loop divider, which in turn receives its inputs via the SRL. The output of the pre-scaler is applied to the loop divider. The output of the loop divider is connected to the phase detector, which compares the loop divider´s output signal with the reference signal. The reference signal is generated by dividing down the signal of reference oscillator Y3261 or Y3262. The output signal of the phase detector is a pulsed dc signal which is routed to the charge pump. The charge pump outputs a current at U3201 pin 43 (IOUT). The loop filter (which consists of R3221R3223 and C3221-C3224) transforms this current into a voltage that is applied to the varactor diodes (D3361 for transmit, D3341 for receive) to alter the output frequency of the appropriate VCO. The current can be set to a value fixed within the LVFRAC-N IC, or to a value determined by the currents flowing into BIAS 1 (U3201-40) or BIAS 2 (U3201-39). The currents are set by the value of R3251 and R3252 respectively. The selection of the three different bias sources is done by software programming. To reduce synthesizer lock time when new frequency data has been loaded into the synthesizer, the magnitude of the loop current is increased by enabling the IADAPT pin (U3201-45) for a certain software programmable time (adapt mode). The adapt mode timer is started by a low to high transient of the CSX line. When the synthesizer is within the lock range, the current is determined only by the resistors connected to BIAS 1 and BIAS 2, or by the internal current source. A settled synthesizer loop is indicated by a high level signal at U3201-4 (LOCK). The LOCK signal is routed to one of the µP´s ADC inputs (U0101-56). From the measured voltage, the µP determines whether LOCK is active. To modulate the PLL, the two spot modulation method is utilized. Via U3201, pin 10 (MODIN), the audio signal is applied to both the A/D converter (low frequency path) as well as the balance attenuator (high frequency path). The A/D converter changes the low frequency analog modulating signal into a digital code that is applied to the loop divider, thereby causing the carrier to deviate. The balance attenuator is used to adjust the VCO’s deviation sensitivity to high frequency modulating signals. The output of the balance attenuator is present at the MODOUT port (U3201-41) and connected to the VCO modulation diode D3362 via R3364. 2-34 Theory of Operation 2.10 Control Head (PRO3100, CDM750) ThE Control Head Contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio and several indicator Light Emitting Diodes (LED) to inform the user about the radio status. To control the LED’s and to communicate with the host radio the control head uses the Motorola 68HC11E9 µP. 2.10.1 Power Supplies The power supply to the control head is taken from the host radio’s FLT A+ voltage via connector J0801, pin 3 and the regulated +5V via connector J0801 pin 7. The voltage FLT A+ is at battery level and is used for the LED’s, the back light and to power up the radio via on / off / volume knob. The stabilized +5 volt is used for µP and the keypad buttons. The voltage USW 5V derived from the FLT A+ voltage and stabilized by the series combination of R0822, VR0822 is used to buffer the internal RAM of the µP (U0831). C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Dual diode D0822 prevents radio circuits from discharging this capacitor. When the supply voltage is applied to the radio, C0822 is charged via R0822 and D0822. To avoid the µP entering the wrong mode if the radio is switched on while the voltage across C0822 is still too low, the regulated 5 volt supply charges C0822 via diode D0822. 2.10.2 Power On/Off The on/off/Volume knob, when pressed, switches the radio’s voltage regulators on by connecting line ON OFF CONTROL to line UNSW 5V via D0821. Additionally, 5 volts at the base of digital transistor Q0822 informs the control head’s µP about the pressed knob. The µP asserts pin 62 and line CH REQUEST low to hold the line ON OFF CONTROL at 5 volts via Q0823 and D0821. The high line ON OFF CONTROL also informs the host radio that the control head’s µP wants to send data via the SBEP bus. When the radio returns a data request message, the µP informs the radio about the pressed knob. If the radio is switched off, the radio’s µP switches it on and vice versa. If the on/off/ volume knob is pressed while the radio is on, the software detects a low state on line ON OFF SENSE, the radio is alerted via line ON OFF CONTROL and sends a data request message. The control head µP informs the radio about the pressed knob and the radio’s µP switches the radio off. 2.10.3 Microprocessor Circuit The control head uses the Motorola 68HC11E9 microprocessor (µP) (U0831) to control the LED’s and to communicate with the host radio. RAM and ROM are contained within the µP. The µP generates it’s clock using the oscillator inside the µP along with a 8 MHz ceramic resonator (U0833) and R0920. The µP’s RAM is always powered to maintain parameters such as the last operating mode. This is achieved by maintaining 5V at uP, pin 25. Under normal conditions, when the radio is off, USW 5V is formed by FLT A+ running to D0822. Capacitor C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Diode D0822 prevents radio circuits from discharging this capacitor. There are eight analog-to-digital converter ports (A/D) on the uP. They are labeled within the device block as PE0-PE7. These lines sense the voltage level ranging from 0 to 5 volts of the input line and convert that level to a number ranging from 0 to 255 which can be read by the software to take appropriate action. The Pin VRH Pin is the high reference voltage for the A/D ports on the uP. If this voltage is lower than +5V the A/D reading is incorrect. The VRL signal is the low reference for the A/D ports. This line is normally tied to ground. If this line is not connected to ground, the A/D readings could be incorrect. Theory of Operation 2-35 The µP determines the used keypad type and the control head ID by reading the levels at ports PC0 – PC7. Connections JU0852/3/4 are provided by the individual keypads. The MODB / MODA input of the µP must be at a logic 1 to start executing correctly. The XIRQ and the IRQ pins should also be at a logic 1. Voltage sense device U0832 provides a reset output that goes to 0 volts if the regulated 5 volts goes below 4.5 volts. This is used to reset the controller to prevent improper operation. 2.10.4 SBEP Serial Interface The host radio (master) communicates to the control head µP (slave) through its SBEP bus. This bus uses only line BUS+ for data transfer. The line is bi-directional meaning that either the radio or the control head µP can drive the line. The µP sends serial data via pin 50 and D0831 and it reads serial data via pin 47. Whenever the µP detects activity on the BUS+ line, it starts communication. When the host radio needs to communicate to the control head uP, it sends data via line BUS+. Any transition on this line generates an interrupt and the µP starts communication. The host radio may send data like LED and back light status or it may request the control head ID or the keypad ID. When the control head µP wants to communicate to the host radio, the uP brings the request line CH REQUEST to a logic 0 via µP pin 62. This switches on Q0823, which pulls line ON OFF CONTROL high through diode D0821. A low to high transition on this line informs the radio, that the control head requires service. The host radio then sends a data request message via BUS+ and the control head uP replies with the data it wanted to send. This data can be information like which key has been pressed or that the volume knob has been rotated. The control head uP monitors all messages sent via BUS+, but ignores any data communication between the host radio and CPS or universal tuner. 2.10.5 Keypad Keys The control head keypad is a 6-key design. All keys are configured as two analog lines read by µP pins 13 and 15. The voltage on the analog lines varies between 0 volts and +5 volts depending on which key has been pressed. If no key is pressed, the voltage at both lines is 5 volts. The key configuration can be thought of as a matrix, where the two lines represent one row and one column. Each line is connected to a resistive divider powered by +5 volts. If a button is pressed, it will connect one specific resistor of each divider line to ground level and thereby reduce the voltages on the analog lines The voltages of the lines are A/D converted inside the µP (ports PE 0 - 1) and specify the pressed button. To determine which key is pressed, the voltage of both lines must be considered. An additional pair of analog lines and A/D µP ports (PE 3 – 2) are available to support a keypad microphone, connected to the microphone connector J0811. Any microphone key press is processed the same way as a key press on a control head. 2.10.6 Status LED and Back Light Circuit All indicator LED’s (red, yellow, green) are driven by current sources. To change the LED status the host radio sends a data message via SBEP bus to the control head µP. The control head µP determines the LED status from the received message and switches the LED’s on or off via port PB 7 – 0 and port PA4. The LED status is stored in the µP’s memory. The LED current is determined by the resistor at the emitter of the respective current source transistor. The back light for the keypad is controlled by the host radio the same way as the indicator LED’s using uP port PA 5. The µP can switch the back light on and off under software control. The keypad back light current is drawn from the FLT A+ source and controlled by 2 current sources. The LED current is determined by the resistor at the emitter of the respective current source transistor. 2-36 Theory of Operation 2.10.7 Microphone Connector Signals Signals BUS+, PTT IRDEC, HOOK, MIC, HANDSET AUDIO, FLT A+, +5V, and two A/D converter inputs are available at the microphone connector J0811. Signal BUS+ (J0811-7) connects to the SBEP bus for communication with the CPS or the Universal Tuner. Line MIC (J0811-5) feeds the audio from the microphone to the radio’s controller via connector J0801-4. The Line HANDSET AUDIO (J0811-8) feeds the receiver audio from the controller (J0801-6) to a connected handset. FLT A+, which is at supply voltage level, and +5V are used to supply any connected accessory like a microphone or a handset. The two A/D converter inputs (J0811-9/10) are used for a microphone with keypad. A pressed key changes the dc voltage on both lines. The voltages depend on which key is pressed. The µP determines from the voltage on these lines which key is pressed and sends the information to the host radio. Line PTT IRDEC (J0811-6) is used to key µP the radio’s transmitter. While the PTT button on a connected microphone is released, line PTT IRDEC is pulled to +5 volts level by R0843. Transistor Q0843 is switched on and causes a low at µP port PA2. When the PTT button is pressed, signal PTT IRDEC is pulled to ground level. This switches off Q0843 and the resulting high level at µP port PA2 informs the µP about the pressed PTT button. The µP informs the host radio about any status change on the PTT IRDEC line via SBEP bus. When line PTT IRDEC is connected to FLT A+ level, transistor Q0821 is switched on through diode VR0821 and thereby pulls the level on line ON OFF CONTROL to FLT A+ level. This switches on the radio and puts the radio’s µP in bootstrap mode. Bootstrap mode loads the firmware into the radio’s flash memory. The HOOK input (J0811-3) informs the µP when the microphone´s hang-up switch is engaged. Depending on the CPS programming, the µP may take actions like turning the audio PA on or off. While the hang µp switch is open, the line HOOK is pulled to +5 volts level by R0841. Transistor Q0841 is switched on and causes a low at µp port PA1. When the HOOK switch is closed, the HOOK signal is pulled to ground level. This switches off R0841and the resulting high level at µp port PA1 informs the µp about the closed hang µp switch. The µp informs the host radio about any status change on the HOOK line via SBEP bus. 2.10.8 Speaker The control head contains a speaker for the receiver audio. The receiver audio signal from the differential audio output of the audio amplifier located on the radio’s controller, is fed via connector J0801-10, 11 to the speaker connector P0801, pins 1 and 2. The speaker is connected to the speaker connector P0801. The control head speaker can be disconnected only if an external speaker, connected on the accessory connector, is used. 2.10.9 Electrostatic Transient Protection Electrostatic transient protection is provided for the sensitive components in the control head by diodes VR0811 VR00812 VR0816 - VR0817. The diodes limit any transient voltages. The associated capacitors provide radio frequency interference (RFI) protection. Theory of Operation 2-37 2.11 Control Head (PRO5100, PRO7100, CDM1250, CDM1550) The control head contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio, several indicator light emitting diodes (LEDs) to inform the user about the radio status, and a 14 character liquid crystal display (LCD) for alpha - numerical information, e.g. channel number or call address name. To control the LED’s and the LCD, and to communicate with the host radio the control head uses the Motorola 68HC11E9 µP. 2.11.1 Power Supplies The power supply to the control head is taken from the host radio’s FLT A+ voltage via connector J0801 pin 3 and the regulated +5V via connector J0801 pin 7. The voltage FLT A+ is at battery level and is used for the LED’s, the back light and to power up the radio via on / off / volume knob. The stabilized +5 volt is used for the µP, display, display driver, and keypad buttons. The voltage USW 5V derived from the FLT A+ voltage and stabilized by the series combination of R0822, VR0822 is used to buffer the internal RAM of the µP (U0831). C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Dual diode D0822 prevents radio circuits from discharging this capacitor. When the supply voltage is applied to the radio, C0822 is charged via R0822 and D0822. To avoid that the µp enters the wrong mode when the radio is switched on while the voltage across C0822 is still too low, the regulated 5V charge C0822 via diode D0822. 2.11.2 Power On / Off The on/off/volume knob when pressed switches the radio’s voltage regulators on by connecting line ON OFF CONTROL to line UNSW 5V via D0821. Additionally, 5 volts at the base of digital transistor Q0822 informs the control head’s µP about the pressed knob. The µP asserts pin 62 and line CH REQUEST low to hold line ON OFF CONTROL at 5 volts via Q0823 and D0821. The high line ON OFF CONTROL also informs the host radio, that the control head’s µP wants to send data via SBEP bus. When the radio returns a data request message, the µP informs the radio about the pressed knob. If the radio was switched off, the radio’s µp switches it on and vice versa. If the on/off/volume knob is pressed while the radio is on, the software detects a low state on line ON OFF SENSE, the radio is alerted via line ON OFF CONTROL and sends a data request message. The control head µp will inform the radio about the pressed knob and the radio’s µp switches the radio off. 2.11.3 Microprocessor Circuit The control head uses the Motorola 68HC11E9 microprocessor (µp) (U0831) to control the LED’s and the LCD and to communicate with the host radio. RAM and ROM are contained within the µP itself. The µP generates it’s clock using the oscillator inside the µP along with a 8 MHz ceramic resonator (U0833) and R0920. The µP’s RAM is always powered to maintain parameters such as the last operating mode. This is achieved by maintaining 5 volts at µp, pin 25. Under normal conditions, when the radio is off, USW 5V is formed by FLT A+ running to D0822. C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Diode D0822 prevents radio circuits from discharging this capacitor. There are eight analog-to-digital converter ports (A/D) on the µp. They are labeled within the device block as PE0-PE7. These lines sense the voltage level ranging from 0 to 5V of the input line and convert that level to a number ranging from 0 to 255 which can be read by the software to take appropriate action. Pin VRH is the high reference voltage for the A/D ports on the µP. If this voltage is lower than +5V the A/D reading is incorrect. Likewise pin VRL is the low reference for the A/D ports. This line is normally tied to ground. If this line is not connected to ground, the A/D readings could be incorrect. 2-38 Theory of Operation The µP determines the used keypad type and the control head ID by reading the levels at ports PC0 – PC7. Connections JU0852/3/4 are provided by the individual keypads. The MODB / MODA input of the µP must be at a logic 1 for it to start executing correctly. The XIRQ and the IRQ pins should also be at a logic 1. Voltage sense device U0832 provides a reset output that goes to 0 volts if the regulated 5 volts goes below 4.5 volts. This is used to reset the controller to prevent improper operation. 2.11.4 SBEP Serial Interface The host radio (master) communicates to the control head µP (slave) through its SBEP bus. This bus uses only line BUS+ for data transfer. The line is bi-directional, meaning that either the radio or the control head µP can drive the line. The µP sends serial data via pin 50 and D0831 and it reads serial data via pin 47. Whenever the µP detects activity on the BUS+ line, it starts communication. When the host radio needs to communicate to the control head µP, it sends data via line BUS+. Any transition on this line generates an interrupt and the µP starts communication. The host radio may send data like display information, LED and back light status or it may request the control head ID or the keypad ID. When the control head µP wants to communicate to the host radio, the µP brings request line CH REQUEST to a logic 0 via µP, pin 62. This switches on Q0823, which pulls line ON OFF CONTROL high through diode D0821. A low to high transition on this line informs the radio, that the control head requires service. The host radio then sends a data request message via BUS+ and the control head µP replies with the data it wanted to send. This data can be information such as a key is pressed or the volume knob rotated. The control head µP monitors all messages sent via BUS+, but ignores any data communication between host radio and CPS or Universal Tuner. 2.11.5 Keypad Keys The control head keypad is a 6-key keypad (Model B) or a 10- key keypad (model C). All keys are configured as two analog lines read by µP, pins 13 and 15. The voltage on the analog lines varies between 0 volts and +5 volts depending on which key has been pressed. If no key is pressed, the voltage at both lines is 5 volts. The key configuration can be thought of as a matrix, where the two lines represent one row and one column. Each line is connected to a resistive divider powered by +5 volts. If a button is pressed, it will connect one specific resistor of each divider line to ground level and thereby reduce the voltages on the analog lines The voltages of the lines are A/D converted inside the µP (ports PE 0 - 1) and specify the pressed button. To determine which key is pressed, the voltage of both lines must be considered. An additional pair of analog lines and A/D µP ports (PE 3 – 2) is available to support a keypad microphone, connected to the microphone connector J0811. Any microphone key press is processed the same way as a key press on the control head. 2.11.6 Status LED and Back Light Circuit All the indicator LED’s (red, yellow, green) are driven by current sources. To change the LED status the host radio sends a data message via SBEP bus to the control head µP. The control head µP determines the LED status from the received message and switches the LED’s on or off via port PB 7 – 0 and port PA4. The LED status is stored in the µP’s memory. The LED current is determined by the resistor at the emitter of the respective current source transistor. The back light for the LCD and the keypad is controlled by the host radio the same way as the indicator LED’s using µP port PA 5. This port is a Pulse Width Modulator (PWM) output. The output signal charges capacitor C0843 through R0847. By changing the pulse width under software control, the dc voltage of C0843 and thereby, the brightness of the back light can be changed in four steps. Theory of Operation 2-39 The keypad back light current is drawn from the FLT A+ source and controlled by transistor Q0933. The current flowing through the LED’s cause a proportional voltage drop across the parallel resistors R0947, R0948. This voltage drop is amplified by the op-amp U0931-2. U0931-2 and Q0934 form a differential amplifier. The voltage difference between the base of Q0934 and the output of U0931-2 determines the current from the base of the LED control transistor Q0933 and in turn the brightness of the LED’s. The µP controls the LED’s by changing the dc level at the base of Q0934. If the base of Q0934 is at ground level, Q0934 is switched off and no current flows through Q0933 and the LED’s. If the base voltage of Q0934 rises a current flows through Q0934 and in turn through Q0933 causing the LED’s to turn on and a rising voltage drop across R0947, R0948. The rising voltage causes the output of the op-amp to rise and to reduce the base to emitter voltage of Q0934. This decreases the current of Q0933 until the loop has settled. 2.11.7 Liquid Crystal Display (LCD) The LCD H0971 uses the display driver U0971. The display is a single-layer super-twist pneumatic (STN) LCD display. It has 14 characters with a 5*8 dot matrix for displaying alpha - numerical information and a line with 21 pre - defined icons above the dot matrix The driver contains a data interface to the µP, an LCD segment driver, an LCD power circuit, an oscillator, data RAM and control logic. At power up the driver’s control logic is reset by a logic 0 at input SR2 (U0971-15). The driver’s internal oscillator is set to about 20 kHz and can be measured at pin 22. The driver’s µP interface is configured to accept 8 bit parallel data input (U0971-D0-D7) from the control head µP (U0831 port PC0-PC7). To write data to the driver’s RAM the µP sets chip select (U0971-20) to logic 0 via U0831-11, RD (U0971-18) to logic 1 via (U0831-10) and WR (U0971-17) to logic 0 via U0831-9. With input A0 (U0971-21) set to logic 0 via U0831-12 the µP writes control data to the driver. Control data includes the RAM start address for the following display data. With input A0 set to logic 1 the µP then writes the display data to the display RAM. When data transfer is complete the µP terminates the chip select, RD, and WD activities. The display driver’s power circuit provides the voltage supply for the display. This circuit consists of a voltage multiplier, voltage regulator and a voltage follower. The external capacitors C0971 - C0973 configure the multiplier to double the supply voltage. In this configuration the multiplier output VOUT (U0971-8) supplies a voltage of -5V (2* -5V below VDD). The multiplied voltage VOUT is sent to the internal voltage regulator. To set the voltage level of the regulator output V5 (U0971-5) this voltage is divided by the resistors R0973 and R0974 and fed back to the reference input VR (U0971-6). In addition the regulator output voltage V5 can be controlled electronically by a control command sent to the driver. With the used configuration the voltage V5 is about –2V. The voltage V5 is resistively divided by the driver’s voltage follower to provide the voltages V1 - V4. These voltages are needed for driving the liquid crystals. The level of V5 can be measured by one of the µP’s analog-to-digital converters (U0831-20) via resistive divider R0975, R0976. To stabilize the display brightness over a large temperature range the µP measures the temperature via analog-to-digital converter (U083118) using temperature sensor U0834. Dependent on the measured temperature the µP adjusts the driver output voltage V5, and in turn the display brightness, via parallel interface. 2.11.8 Microphone Connector Signals Signals BUS+, PTT IRDEC, HOOK, MIC, HANDSET AUDIO, FLT A+, +5V and 2 A/D converter inputs are available at the microphone connector J0811. Signal BUS+ (J0811-7) connects to the SBEP bus for communication with the CPS or the Universal Tuner. Line MIC (J0811-5) feeds the audio from the microphone to the radio’s controller via connector J0801-4. Line HANDSET AUDIO (J0811-8) feeds the receiver audio from the controller (J0801-6) to a connected handset. FLT A+, which is at supply voltage level, and +5V are used to supply any connected accessory like a microphone or a handset. 2-40 Theory of Operation The two A/D converter inputs (J0811-9/10) are used as a microphone with keypad. A pressed key changes the dc voltage on both lines. The voltages depend on which key is pressed. The µP determines, from the voltage on these lines, which key is pressed and sends this information to the host radio. Line PTT IRDEC (J0811-6) is used to key up the radio’s transmitter. While the PTT button on a connected microphone is released, line PTT IRDEC line is pulled to a +5 volts level by R0843. Transistor Q0843 is then switched on causing a low at µP port PA2. When the PTT button is pressed, signal PTT IRDEC is pulled to ground level. This switches off Q0843 and the resulting high level at µP port PA2 informs the µP about the pressed PTT button. The µP informs the host radio about any status change on the PTT IRDEC line via the SBEP bus. When line PTT IRDEC is connected to FLT A+ level, transistor Q0821 is switched on through diode VR0821 pulling the level on the line ON OFF CONTROL to FLT A+ level. This switches on the radio and puts the radio’s µP in bootstrap mode. Bootstrap mode is used to load the firmware into the radio’s flash memory. The HOOK input (J0811-3) is used to inform the µP when the microphone´s hang-up switch is engaged. Dependent on the CPS programming the µP may take actions like turning the audio PA on or off. While the hang up switch is open, line HOOK is pulled to +5 volts level by R0841. Transistor Q0841 is switched on causing a low at µP port PA1. When the HOOK switch is closed, signal HOOK is pulled to ground level. This switches off R0841 and the resulting high level at µP port PA1 informs the µP about the closed hang up switch. The µP informs the host radio about any status change on the HOOK line via SBEP bus. 2.11.9 Speaker The control head contains a speaker for the receiver audio. The receiver audio signal from the differential audio output of the audio amplifier located on the radio’s controller is fed via connector J0801-10, -11 to the speaker connector P0801, pins 1 and 2. The speaker is connected to the speaker connector P0801. The control head speaker can only be disconnected if an external speaker, connected on the accessory connector, is used. 2.11.10Electrostatic Transient Protection Electrostatic transient protection is provided for the sensitive components in the control head by diodes VR0811 VR00812 and VR0816 - VR0817. The diodes limit any transient voltages. The associated capacitors provide radio frequency interference (RFI) protection. 3-1 Chapter 3 Maintenance 3.1 Introduction This chapter of the manual describes: n Preventive maintenance n Safe handling of CMOS and LDMOS devices n Repair procedures and techniques 3.2 Preventive Maintenance The radios do not require a scheduled preventive maintenance program; however, periodic visual inspection and cleaning is recommended. 3.2.1 Inspection Check that the external surfaces of the radio are clean, and that all external controls and switches are functional. It is not recommended to inspect the interior electronic circuitry. 3.2.2 Cleaning The following procedures describe the recommended cleaning agents and the methods to be used when cleaning the external and internal surfaces of the radio. External surfaces include the front cover, housing assembly, and battery case. These surfaces should be cleaned whenever a periodic visual inspection reveals the presence of smudges, grease, and/or grime. NOTE Internal surfaces should be cleaned only when the radio is disassembled for servicing or repair. The only recommended agent for cleaning the external radio surfaces is a 0.5% solution of a mild dishwashing detergent in water. The only factory recommended liquid for cleaning the printed circuit boards and their components is isopropyl alcohol (70% by volume). ! CAUTION: The effects of certain chemicals and their vapors can have harmful results on certain plastics. Aerosol sprays, tuner cleaners, and other chemicals should be avoided. WARNING Cleaning External Plastic Surfaces The detergent-water solution should be applied sparingly with a stiff, non-metallic, short-bristled brush to work all loose dirt away from the radio. A soft, absorbent, lintless cloth or tissue should be used to remove the solution and dry the radio. Make sure that no water remains entrapped near the connectors, cracks, or crevices. Cleaning Internal Circuit Boards and Components Isopropyl alcohol may be applied with a stiff, non-metallic, short-bristled brush to dislodge embedded or caked materials located in hard-to-reach areas. The brush stroke should direct the dislodged material out and away from the inside of the radio. Make sure that controls or tunable components are 3-2 Maintenance not soaked with alcohol. Do not use high-pressure air to hasten the drying process since this could cause the liquid to collect in unwanted places. Upon completion of the cleaning process, use a soft, absorbent, lintless cloth to dry the area. Do not brush or apply any isopropyl alcohol to the frame, front cover, or back cover. NOTE Always use a fresh supply of alcohol and a clean container to prevent contamination by dissolved material (from previous usage). 3.3 Safe Handling of CMOS and LDMOS Complementary metal-oxide semiconductor (CMOS) devices are used in this family of radios. CMOS characteristics make them susceptible to damage by electrostatic or high voltage charges. Damage can be latent, resulting in failures occurring weeks or months later. Therefore, special precautions must be taken to prevent device damage during disassembly, troubleshooting, and repair. Handling precautions are mandatory for CMOS circuits and are especially important in low humidity conditions. DO NOT attempt to disassemble the radio without first referring to the CMOS CAUTION paragraph in the Disassembly and Reassembly section of the manual. ! WARNING CAUTION: This radio contains static-sensitive devices. Do not open the radio unless you are properly grounded. Take the following precautions when working on this unit: n n n n n Store and transport all CMOS devices in conductive material so that all exposed leads are shorted together. Do not insert CMOS devices into conventional plastic “snow” trays used for storage and transportation of other semiconductor devices. Ground the working surface of the service bench to protect the CMOS device. We recommend using the Motorola Static Protection Assembly (part number 0180386A82), which includes a wrist strap, two ground cords, a table mat, and a floor mat. Wear a conductive wrist strap in series with a 100k resistor to ground. (Replacement wrist straps that connect to the bench top covering are Motorola part number RSX-4015.) Do not wear nylon clothing while handling CMOS devices. Do not insert or remove CMOS devices with power applied. Check all power supplies used for testing CMOS devices to be certain that there are no voltage transients present. n When straightening CMOS pins, provide ground straps for the apparatus used. n When soldering, use a grounded soldering iron. n If at all possible, handle CMOS devices by the package and not by the leads. Prior to touching the unit, touch an electrical ground to remove any static charge that you may have accumulated. The package and substrate may be electrically common. If so, the reaction of a discharge to the case would cause the same damage as touching the leads. 3.4 General Repair Procedures and Techniques Parts Replacement and Substitution When damaged parts are replaced, identical parts should be used. If the identical replacement component is not locally available, check the parts list for the proper Motorola part number and order the component from the nearest Motorola Communications parts center listed in the Piece Parts Availability section of this manual (See Chapter 1). You also need to review Motorola’s Rework and Repair Technical Reference manual, P/N 6880309G53, which can be ordered from AAD at 1-800422-4210. Rigid Circuit Boards The family of radios uses bonded, multi-layer, printed circuit boards. Since the inner layers are not accessible, some special considerations are required when soldering and unsoldering components. Maintenance 3-3 The printed-through holes may interconnect multiple layers of the printed circuit. Therefore, care should be exercised to avoid pulling the plated circuit out of the hole. When soldering near the 20-pin and 40-pin connectors: n Avoid accidentally getting solder in the connector. n Be careful not to form solder bridges between the connector pins. n Closely examine your work for shorts due to solder bridges. n Do not exceed 210 degrees C when reworking boards. n Do not exceed 5 degrees temperature ramp rate. Flexible Circuits The flexible circuits are made from a different material than the rigid boards and different techniques must be used when soldering. Excessive prolonged heat on the flexible circuit can damage the material. Avoid excessive heat and excessive bending. For parts replacement, use the ST-1087 R1319A Temperature-Controlled Solder Station with a 600700 degree tip for OMPAC (BGA) CSP, micro BGA and connectors. Use digital tweezers for all other component. Use small diameter solder such as ST-633. The smaller size solder will melt faster and require less heat to be applied to the circuit. To replace a component on a flexible circuit: 1. Grasp the edge of the flexible circuit with seizers (hemostats) near the part to be removed. 2. Pull gently. 3. Apply the tip of the soldering iron to the component connections while pulling with the seizers. NOTE Do not attempt to puddle out components. Prolonged application of heat may damage the flexible circuit. Chip Components Use either the RLN-4062 R1319A Chipmaster Hot-Air Repair Station or the Motorola 0180381B45 Repair Station R1364a digital heated tweezer system for chip component replacement. When using the 0180381B45 Repair Station, select the TJ-65 mini-thermojet hand piece. On either unit, adjust the temperature control to 700 degrees F. (370 degrees C), and adjust the airflow to a minimum setting. Airflow can vary due to component density. To remove a chip component: 1. Use a hot-air hand piece and position the nozzle of hand piece R1319A approximately 1/8" (0.3 cm) above the component to be removed. 2. Begin applying the hot air. Once the solder reflows, remove the component using the pair of tweezers contained in the SMD tool kit shipped with the R1319A. 3. Using a solder wick (Motorola P/N 6680334B25) and a soldering iron or a power desoldering station, remove the excess solder from the pads. To replace a chip component using a soldering iron: 1. Select the appropriate micro-tipped soldering iron and apply fresh solder paste (Motorola P/N 6680333E72) to one of the solder pads. 2. Using a pair of tweezers, position the new chip component in place while heating the fresh solder. 3. Once solder wicks onto the new component, remove the heat from the solder. 4. Heat the remaining pad with the soldering iron and apply solder until it wicks to the component. If necessary, touch up the first side. All solder joints should be smooth and shiny. 3-4 Maintenance To replace a chip component using hot air: 1. Use the hot-air hand piece and reflow the solder on the solder pads to smooth it. For components having two or three solder connections, apply a dot of NO-CLEAN solder paste to the lead joints before removal. 2. Apply a drop of solder paste flux to each pad. For dual leaded devices such as SOICs, TSOPs, and quad leaded devices less than 20 leads, such as PLCCs and QFPs, apply a bead of solder paste. 3. Using a pair of tweezers, position the new component in place. As component is removed, it will carry away excess solder, leaving the ideal amount on the pads for their surface area. 4. Position the hot-air hand piece approximately 1/8” (0.3 cm) above the component and begin applying heat. For an extensive discussion of chip component rework and other technical procedures, order manual 6880309G53 from Motorola AAD. 5. Once the solder wicks to the component, remove the heat and inspect the repair. All joints should be smooth and shiny. Shields Removing and replacing shields will be done with the R-1070 R1319A station with the temperature control set to approximately 415°F (215°C) [445°F (230°C) maximum]. To remove the shield: 1. Place the circuit board in the R-1070’s holder. 2. Select the proper heat focus head and attach it to the heater chimney. 3. Add paste flux (Motorola P/N 6680333E71) around the base of the shield. 4. Position the shield under the heat-focus head. 5. Lower the vacuum tip and attach it to the shield by turning on the vacuum pump. 6. Lower the focus head until it is approximately 1/8” (0.3 cm) above the shield. 7. Turn on the heater and wait until the shield lifts off the circuit board. 8. Once the shield is off, turn off the heat, grab the part with a pair of tweezers, and turn off the vacuum pump. 9. Remove the circuit board from the R-1070’s circuit board holder. To replace the shield: 1. Add solder to the shield if necessary, using a micro-tipped soldering iron. 2. Rub the soldering iron tip along the edge of the shield to smooth out any excess solder. Use solder wick and a soldering iron to remove excess solder from the solder pads on the circuit board. 3. Place the circuit board back in the R1070’s R1319A circuit board holder. 4. Place the shield on the circuit board using a pair of tweezers. 5. Place a small bead of no-clean flux (Motorola P/N 6680333E71) around the tinned surface. 6. Position the heat-focus head over the shield and lower it to approximately 1/8” (0.3 cm) above the shield. 7. Turn on the heater and wait for the solder to reflow. The R1319A will record removal time, add 30 to 40 seconds for replacement. 8. Once complete, turn off the heat, raise the heat-focus head and wait approximately one minute for the part to cool. 9. Remove the circuit board and inspect the repair. No cleaning should be necessary. Maintenance 3-5 3.5 Recommended Test Tools Table 3-1 lists the recommended tools used for maintaining this family of radios. These tools are also available from Motorola. Table 3-1. Recommended Test Tools Motorola Part Number Description Application RSX4043 Torx Driver Tighten and remove chassis screws 6680387A70 T-6 Torx Bit Removable Torx driver bit WADN4055A 6604008K01 6604008K02 Portable soldering station 0.4mm replacement tip 0.8mm replacement tip Digitally controlled soldering Iron For WADN4055A soldering Iron 0180386A78 Illuminated magnifying glass with lens attachment. 0180302E51 Illuminated Magnification System Illuminated and magnification of components 0180386A82 Anti-static grounding kit Used during all radio assembly and disassembly procedures 6684253C72 6680384A98 1010041A86 Straight prober Brush Solder (RMA type), 63/37, 0.5mm diameter 1 lb. spool SMD tool kit (Include with R1319A) 0180303E45 R-1321A R1319A Shields and surface-mounted component and IC removal/rework station (order all heat-focus heads separately) Removal and assembly of surface-mounted integrated circuits and shields. Includes five nozzles 6680334B49 6680334B50 6680334B51 6680334B52 6680334B53 6680370B51 6680370B54 6680370B57 6680370B58 6680371B15 6680371B74 6680332E45 6680332E46 0.410” x 0.410” 0.430” x 0.430” 0.492” x 0.492” 0.572” x 0.572” 0.670” x 0.790” 0.475” x 0.475” 0.710” x 0.710” 0.245” x 0.245” 0.340” x 0.340” 0.460” x 0.560” 0.470” x 0.570” 0.591” x 0.315” 0.862” x 0.350” Heat-focus heads for R-1319A work station R1364A Digital Heated Tweezer System Chip component removal R1427A Board Preheater Reduces heatsink on multi-level boards 6680309B53 Rework Procedures Manual Contains Application notes, procedures, and technical references regarding rework equipment 3-6 Maintenance 3.6 Transmitter Troubleshooting Chart START No power No Change Q4573 Yes No No Is Q4573 OK? Is Vctrl there? Check MOSBIAS_2 Yes No Check ASFIC Yes Yes Check voltage on pin 4 U4501 Check R4422-5 and go back to top No Check PCIC_MOSBIAS_1 No No Check PCIC Yes Check voltage on pin 5 U4501 Are D4471 & D4472 OK? No Change D4471 & D4472 Change Q4431 Troubleshoot ASFIC Yes Yes No No Change PCIC Check voltage on TP4531 Yes Check Q4421 gate(open) and drain resistances (11kohm) Check Q4431 gate(open) and drain resistances (11kohm) Yes No Change Q4421 Yes Check R4409 & R4473 and go back to top Is Q4441 OK ? No No Yes Is voltage drop across R4497 >4.5V ? Change Q4441 No Change U4401 Troubleshoot VCO Yes Is drive from VCO >+4dBm? Do visual check on all components Maintenance 3-7 3.7 Receiver Troubleshooting Chart START Bad SINAD Bad 20dB Quieting No Recovered Audio Audio at pin 8 Yes of U3101? Check Controller (in the case of no audio). Or else go to “B” No Spray or inject 44.85MHz into XTAL Filter FL3101. A Check Q3102 bias for faults. Yes Audio heard? B No Biasing OK? Check 2nd LO (44.395MHz) at C3135. No Replace Q3102. Yes B LO present? No Check circuitry around U3101. Replace U3101 if defect. No Check voltages on U3101. OK? Yes Check circuitry around Y3101. Replace Y3101 if defect. Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) Yes Go to B 3-8 Maintenance B Inject RF into J4401 IF Signal at C3101? Trace IF signal from C3101 to Q3101. Check for bad XTAL filter. Yes IF signal at Q3102 collector? Before replacing U3101, check U3101 voltages. No Yes RF Signal at T4051? 1st LO level OK? Locked? No Yes Yes RF Signal at C4015? No Yes No Check FGU Check T4051, T4052, D4051, R4052, L4008. Check filter between C4015 & T4051. Check for 5VDC Yes A No No Yes Check RF amp (Q4003) RF Signal at Stage. C4009? Is 9V3 present? No or weak RF Check filter between Yes C4025 & C4009. Check tuning voltage at R4060. RF Signal at C4025? A No Check Supply Voltage circuitry. Check U0611 and U0641. No Check harmonic filters L4491-L4493, C4492 and ant.switch D4471,D4472,L4472. Yes Is tuning voltage OK? Yes Check varactor filter. No Check U4501. Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Maintenance 3-9 3.8 Synthesizer Troubleshooting Chart 5V at U4201 pins 5, 20, 34 & 36 Start Check D4201, C4202, C4203, & C4206 Check 5V Regulator U4211 YES Visual check of the Board OK? NO Correct Problem NO YES YES 5V NO at pin 6 of D4201 Is U4201 Pin 47 at = 13VDC NO NO YES Check R4201 Check C4381 Is U4301 Pin 19 <40 mVDC in RX & >4.5 VDC in TX? (at VCO section) +5V at U4201 Pin’s 13 & 30? YES NO YES Are signals at Pin’s 14 & 15 of U4201? YES Replace U4201 Check Y4261, C4261, C4262, C4263, D4261 & R4261 NO Are Waveforms at Pins 14 & 15 triangular? NO YES YES YES Is U4201 pin 2 >4.5 VDC in Rx & <40 mVDC in Rx YES NO NO NO Replace U4201 Is there a short between Pin 47 and Pins 14 & 15 of U4201? Check programming lines between U0101 and U4201 Pins 7,8 & 9 YES NO Remove Shorts Check uP U0101 Troubleshooting Chart Is RF level at U4201 Pin 32 -12 < x <-25 dBm? Is 16.8MHz signal at U4201 pin 23? NO Check 5V R e g ul a t or U4211 NO Is 16.8MHz Signal at U4201 Pin 19? If L4225, C4229 & C4227 are OK, then see VCO troubleshooting chart NO Do Pins 7,8 & 9 of U4201 toggle when channel is changed? YES Is information from µP U0101 correct? YES Replace U4201 YES Are R4221,R4222, R4223,C4221,C4222, & C4223 OK? YES Replace U4201 NO Replace or resolder necessary components Troubleshooting Flow Chart for UHF Mobile Synthesizer Section 3-10 Maintenance This page intentionally left blank Maintenance 3-11 3.9 VCO Troubleshooting Chart l TX VCO RX VCO LOW OR NO RF SIGNAL AT TP4003 VISUAL CHECK OF BOARD OK? NO CORRECT PROBLEM LOW OR NO RF SIGNAL AT INPUT TO PA POWER OK BUT NO MODULATION VISUAL CHECK OF BOARD OK? AUDIO = 180 mVRMS AT “-” SIDE OF C4325 NO 4.5V DC AT U4301 PIN 14&18 MAKE SURE SYNTHESIZER IS WORKING CORRECTLY AND RUNNER BETWEEN U4201 PIN 28 AND U4301 PIN 14&18 IS OK. NO NO 35mV DC AT U4301 PIN 19 CHECK RUNNER BETWEEN U4201 PIN 2 AND U4301 PIN 19 NO YES NO NO YES IF C4321 AND R4321 ARE OK, THEN REPLACE CR4321 4.8V DC AT U4301 PIN 19 YES ARE Q4301 BASE AT 2.4V COLLECTOR AT 4.5V EMITTER AT 1.7V NO REPLACE Q4301 ARE U251 PINS 13 AT 4.4V 15 AT 1.1V 10 AT 4.5V 16 AT 1.9V NO IF ALL PARTS ASSOCIATED WITH THOSE PINS ARE OK, REPLACE U4301 YES YES IS RF AVAILABLE AT BASE OF Q4332 4.5VDC AT CR4321 4.5V DC AT U251 PIN 14&18 YES YES IF ALL PARTS FROM U4301 PIN 8 TO BASE OF Q4332 ARE OK, REPLACE U4301 NO YES IF ALL PARTS FROM COLLECTOR OF Q4332 TO TP4003 ARE OK, REPLACE Q4332 NO YES YES ARE Q4332 BASE AT 0.7V COLLECTOR AT 4.5V EMITTER AT 110mV IS RF AVAILABLE AT TP4534 NO IF ALL PARTS ASSOCIATED WITH THE PINS ARE OK, REPLACE Q4332 REPLACE C4325 YES YES YES NO IF ALL PARTS FROM TP4534 TO U4401 PIN 16 ARE OK, REPLACE U4301 IF R4361 AND L4361 ARE OK, REPLACE U4301 REPLACE R4322 3-12 Maintenance This page intentionally left blank 4-1 Chapter 4 Schematic Diagrams, Overlays, and Parts Lists 4.1 Introduction This chapter provides schematic diagrams, overlays, and parts lists for the radio circuit boards and interface connections. 4.1.1 Notes For All Schematics and Circuit Boards * Component is frequency sensitive. Refer to the Electrical Parts List for value and usage. 1. Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads (pF) or microfarads (µF). 2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multimeter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series with the voltage probe to prevent circuit loading. 3. Reference Designators are assigned in the following manner: 800-900 = Control Heads 100/200/400/500/600 Series = Controller 100/200/400/500/600/3000/4000 Series = UHF Transmitter 3000 Series = VHF Transmitter 4. Interconnect Tie Point Legend: UNSWB+ = Unswitched Battery Voltage (12V) SWB+ = Switched Battery Voltage (12V) R5 = Receiver Five Volts CLK = Clock Vdda = Regulated 5 Volts (for analog) Vddd = Regulated 5 Volts (for digital) CSX = Chip Select Line (not for LVZIF) SYN = Synthesizer DACRX = Digital to Analog Voltage (For Receiver Front End Filter) VSF = Voltage Super Filtered (5 volts) VR = Voltage Regulator 4-2 Introduction SIDE 1 LAYER 1 (L1) LAYER 2 (L2) LAYER 3 (L3) LAYER 4 (L4) LAYER 5 (L5) LAYER 6 (L6) SIDE 2 INNER LAYERS 6-LAYER CIRCUIT BOARD DETAIL VIEWING COPPER STEPS IN PROPER LAYER SEQUENCE 4-3 D0879 D0878 D0877 D0872 D0873 R0823 4 S0866 5 S0865 D0886 D0884 JU0853 1 3 2 JU0852 D0874 JU0854 9 7 8 5 6 4 D0875 1 3 2 D0871 D0876 10 J0811 S0864 S0861 S0863 D0887 S0862 D0881 D0888 D0885 ZWG0130114 Figure 4-1. PRO3100/CDM750 Control Head Top Overlay 4-4 Q0872 Q0873 Q0877 Q0823 R0825 D0821 R0821 C0824 Q0822 R0873 R0879 C0821 1 U0833 3 TP0838 C0803 R0881 32 33 R0854 4 R0824 R0852 R0874 C0833 R0832 TP0833 R0815 R0853 1 8 R0871 R0816 Q0881 C0806 C0808 C0822 TP0835 17 16 Q0871 U0832 R0814 5 J0801 C0805 C0815 C0804 Q0821 R0812 C0802 R0822 C0823 R0831 C0813 R0878 D0822 VR0822 R0877 R0813 Q0878 R0872 Q0879 Q0874 U0831 C0811 TP0834 VR0811 R0835 C0809 TP0836 R0875 12 TP0831 R0876 Q0876 Q0875 C0810 R0833 1 64 48 49 R0834 R0841 R0837 TP0837 0 R0864 TP0832 1 P0801 R0861 R0862 R0880 R0866 D0831 Q0885 R0867 R0885 R0838 R0839 R0836 C0832 R0842 R0843 VR0817 C0843 C0816 C0817 C0818 R0847 Q0843 VR0816 R0844 VR0823 R0849 VR0821 R0845 2 R0810 R0811 Q0841 C0819 C0831 ZWG0130113 Figure 4-2. PRO3100/CDM750 Control Head Bottom Overlay 4-5 Microphone Interface Radio Interface 5V R0811 51K C0810 C0811 470pF 470pF NU R0810 EXT_KP_COL J0811-10 FLT_A+ VR0823 5.6V NU J0801-14 J0801-13 EXT_KP_COL J0801-12 J0811-1 22 J0811-2 J0801-11 P0801-1 J0801-10 P0801-2 C0809 82pF NU 5V 22 HOOK SCI_TX FLT_A+ R0847 5V C0813 470pF J0801 CONTROLHEAD CONNECTOR R0812 13K WARIS GM300 9 8 7 6 5 4 3 2 1 10 C0843 470pF VR0811 33V J0811-3 HOOK J0801-9 J0811-4 R0813 10 J0801-8 J0811-5 MIC R0814 J0811-7 5V J0801-6 HANDSET_AUDIO J0801-5 BUS+ J0801-4 MIC BUS+ 270 HANDSET_AUDIO J0811-8 HANDSET_AUDIO R0815 EXT_KP_ROW J0801-3 FLT_A+ J0801-2 ON_OFF_CONTROL VR0816 20V C0808 470pF ON/OFF Section C0833 0.1uF 1 TP0833 RESET TP0831 TP0832 TP0838 1 1 1 C0824 .01uF NU TP0836 SCI_RX TAB FLT_A+ 5V 5V R0836 10K R0837 33K 13 15 17 19 14 16 18 20 PE0_AN0 PE1_AN1 PE2_AN2 PE3_AN3 PE4_AN4 PE5_AN5 PE6_AN6 PE7_AN7 PC0_AD0 PC1_AD1 PC2_AD2 PC3_AD3 PC4_AD4 PC5_AD5 PC6_AD6 PC7_AD7 34 36 37 38 39 40 41 42 47 50 51 52 53 54 PD0_RXD PD1_TXD PD2_MISO PD3_MOSI PD4_SCK PD5_SS* PB0_A8 PB1_A9 PB2_A10 PB3_A11 PB4_A12 PB5_A13 PB6_A14 PB7_A15 12 0 11 1 10 2 9 3 8 4 7 5 6 6 5 7 BUS+ D0822 R0824 USW_5V 4.7K VR0822 5.6V INT_KP_COL INT_KP_ROW EXT_KP_COL EXT_KP_ROW VOLUME 1 VOLUME R0822 24K FLT_A+ 5V ON_OFF_SENSE 28 30 1 64 63 62 59 58 57 56 C0821 470pF NU C0822 2.2uF R0834 270 R0839 0 NU D0831 5V R0838 10K R0844 10K R0845 4.7K ON_OFF_SENSE CH_REQUEST BL_GREEN 0 1 2 3 4 5 6 7 R0849 47K 5V 8 R0852 100K CH_KP_ID(0:7) R0853 100K CONTROL HEAD ID R0854 100K 0 POS Q0822 R0821 10K 5V BOOT_MODE 1 TP0835 USW_5V 29 STRA_AS CLK_E 31 EXTAL U0831 STRB_RW* 33 XTAL MC68HC711E9 PA0_IC3 CONTROLLER PA1_IC2 46 IRQ PA2_IC1 45 XIRQ PA3_OC5_OC1 43 RESET PA4_OC4_OC1 PA5_OC3_OC1 27 MODA_LIR* PA6_OC2_OC1 25 MODB_VSTBY PA7_PA1_OC1 0 TAB1 VAR R0823 50K NEG NC3 6 3 NC1 NC4 7 5 NC2 8 GND NC5 5V R0831 1MEG 23 VSS1 24 VSS2 49 VSS3 5V NU INPUT RESET 1 4 CH_REQUEST 2 C2 1 5V 3 R0833 47K 1 ON_OFF_CONTROL 1K GND 2 5V Q0843 PTT_IRDEC 2 U0832 MC33064 R0825 1 R0835 100 R0832 2.2K R0842 47K R0843 10K Q0841 HOOK JU0852 JU0853 JU0854 1 D0821 C1 1 5V R0841 10K 5V 2 TP0834 BOOT_VPP 5V Q0823 VDD 55 VRH 22 VRL 21 PTT_IRDEC C0823 .01uF 5V C0832 0.1uF C0831 3.3uF 2 U0833 CSTCC8.00MG C0802 470pF NU 2 VR0821 5.6V NU Controller Section 5V Q0821 FLT_A+ C0806 C0805 C0804 C0803 470pF 82pF 470pF 470pF J0801-1 1 VR0817 20V 3 5V 2 C0819 470pF NU 1 C0817 C0818 470pF 82pF NU 4 C0816 470pF 5 R0816 51K C0815 470pF 6 13K 7 EXT_KP_ROW J0811-9 35 44 48 60 61 BUS+ J0801-7 PTT_IRDEC NC6 NC7 NC8 NC9 NC10 MIC PTT_IRDECODER J0811-6 2 NC1 3 NC2 4 NC3 26 NC4 32 NC5 GROUND J0811 MICROPHONE CONNECTOR SCI_TX TP0837 SCI_TX 1 LED_CNTRL(0:8) KEYPAD ID ZWG0130239 Figure 4-3. PRO3100/CDM750 Control Head Schematic Diagram, Sheet 1 4-6 Backlight Keypad FLT_A+ INT_KP_COL R0866 R0867 51K 13K 5V R0861 51K 5V INT_KP_ROW 1 5 4 8 2 6 3 7 Keypad Layout P1 P5 P4 P8 P2 P6 P3 P7 F4 0V/0V 1 5 4 8 2 6 3 7 S0861 red yellow P1 P5 P4 P8 P2 P6 P3 P7 D0886 green D0885 green D0884 green D0888 green D0881 green D0887 green Q0885 Q0881 P2 1V/0V R0862 13K R0881 270 S0865 R0885 270 BL_GREEN green LED6 LED5 P1 S0866 P2 S0865 1 5 4 8 2 6 3 7 P1 P5 P4 P8 P2 P6 P3 P7 F3 0V/1V S0862 LED1 LED2 LED3 LED4 F1 S0864 F2 S0863 F3 S0862 F4 S0861 1 5 4 8 2 6 3 7 P1 P5 P4 P8 P2 P6 P3 P7 1 5 4 8 2 6 3 7 P1 P5 P4 P8 P2 P6 P3 P7 1 5 4 8 2 6 3 7 P1 P5 P4 P8 P2 P6 P3 P7 Status LED P1 1V/1V FLT_A+ R0880 22K LED_CNTRL(0:8) F2 0V/2V D0878 yellow D0877 red S0866 R0864 43K Q0877 Q0878 R0877 270 R0878 270 D0879 green Q0879 R0879 270 5 6 7 S0863 Sunction LED FLT_A+ F1 0V/3V LED1 D0874 red LED2 D0875 red LED3 D0876 red LED4 D0871 red LED5 D0872 red LED6 D0873 red Q0874 Q0875 Q0876 Q0871 Q0872 Q0873 S0864 4 R0874 270 3 R0875 270 2 R0876 270 1 R0871 270 0 R0872 270 8 R0873 270 LED_CNTRL(0:8) ZWG0130240 Figure 4-4. PRO3100/CDM750 Control Head Schematic Diagram, Sheet 2 4-7 Table 4-1. PRO3100/CDM750 Control Head Parts List Reference Designator C0803 C0804 C0805 C0808 C0811 C0813 C0815 C0816 C0817 C0822 C0823 C0831 C0832 C0833 C0843 D0821 D0822 D0831 D0871 D0872 D0873 D0874 D0875 D0876 D0877 D0878 D0879 D0881 D0884 D0885 D0886 D0887 D0888 J801 J811 Q0821 Q0822 Q0823 Q0841 Q0843 Q0871 Q0872 Q0873 Q0874 Q0875 Q0876 Q0877 Q0878 Q0879 Q0881 Motorola Part No. 2113741F17 2113741F17 2113740F49 2113741F17 2113741F17 2113741F17 2113741F17 2113741F17 2113740F49 2311049A40 2113741F49 2311049A42 2113743E20 2113743E20 2113741F17 4813833C02 4813833C02 4880236E05 4886171B01 4886171B01 4880479B01 4886171B01 4886171B01 4886171B01 4886171B01 4886171B03 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 0902636Y02 2864287B01 4805921T02 4880048M01 4805921T02 4880048M01 4880048M01 4813824A10 4813824A10 4813824A10 4813824A10 4813824A10 4813824A10 4813824A10 4813824A10 4813824A10 4813824A10 Description 470pF 470pF 100pF 470pF 470pF 470pF 470pF 470pF 82pF 2.2uF 10nF 3.3uF 100nF 100nF 470pF Dual Schottky Dual Schottky Schottky LED, Red LED, Red LED, Red LED, Red LED, Red LED, Red LED, Red LED, Yellow LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green 12-Pin Connector 10-Pin Jack Transistor, Dual Transistor, NPN Transistor, Dual Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Reference Designator Q0885 R0810 R0811 R0812 R0813 R0814 R0815 R0816 R0821 R0822 R0823 R0824 R0825 R0831 R0832 R0833 R0834 R0835 R0836 R0837 R0838 R0841 R0842 R0843 R0844 R0845 R0847 R0849 R0852 R0853 R0854 R0861 R0862 R0864 R0866 R0867 R0871 R0872 R0873 R0874 R0875 R0876 R0877 R0878 R0879 R0880 R0881 R0885 U0831 U0833 VR0816 Motorola Part No. 4813824A10 0662057A76 0662057A90 0662057A09 0662057A01 0662057A35 0662057A76 0662057A90 0662057A73 0662057A82 1805911V01 0662057A65 0662057A49 0662057B22 0662057A57 0662057A89 0662057A35 0662057A25 0662057A73 0662057A85 0662057A73 0662057A73 0662057A89 0662057A73 0662057A73 0662057A65 0662057A09 0662057A89 0662057A97 0662057A97 0662057A97 0662057A90 0662057A76 0662057A88 0662057A90 0662057A76 0660076A35 0660076A35 0660076A35 0660076A35 0660076A35 0660076A35 0660076A35 0660076A35 0660076A35 0662057A81 0662057A35 0662057A35 5113802A24 4886061B01 4805656W09 Description Transistor, NPN 13K 51K 22 10 270 13K 51K 10K 24K Volume Pot 4K 1K 1M 2K 47K 270 100 10K 33K 10K 10K 47K 10K 10K 4K 22 47K 100K 100K 100K 51K 13K 43K 51K 13K 270 270 270 270 270 270 270 270 270 22K 270 270 IC 8 MHz Diode, Zener Reference Designator VR0817 VR0821 VR0822 VR0823 Motorola Part No. 4805656W09 4813830A15 4813830A15 4813830A15 Description Diode, Zener Diode, 5.6V Diode, 5.6V Diode, 5.6V 4-8 This page intentionally left blank 4-9 D0880 D0877 D0879 10 1 30 20 40 H0971 D0935 D0965 D0939 D0969 D0943 D0973 D0947 D0977 S0854 R0823 4 D0941 D0971 D0956 D0986 D0937 D0967 D0945 D0975 1 D0932 D0964 S0852 41 S0906 7 5 6 D0944 D0974 D0948 D0978 50 S0902 S0904 80 70 60 S0910 S0909 1 3 4 D0940 D0970 S0853 D0934 3 2 U0834 D0936 D0966 5 D0962 8 D0958 D0988 D0933 D0963 D0961 D0931 9 D0955 D0985 2 D0949 10 J0811 D0952 D0979 S0903 D0982 D0980 D0951 D0981 D0946 D0953 D0976 D0983 D0987 S0905 S0901 D0950 D0957 S0908 S0907 D0942 D0954 D0938 D0972 D0984 D0968 ZWG0130136 WARIS Controlhead B/C 8486155B04-P4 TOP SIDE ILLUSTRATOR RK EDITOR DATE ENGINEER DATE 30/March/99 DATE LETTERING SIZE: REQUIRES: CHECKER DWG. NO. ZWG0130136 PROGRAM DISK CHECK ONE Illustrator DATE ISS. ( ) O.K. AS MARKED ( ) O.K. AS IS CORRECTED AS MARKED REVISION RLSE. RLSE. P4 Figure 4-5. PRO5100/PRO7100/CDM1250/CDM1550 Control Head Top Overlay 4-10 3 R0854 C0831 C0823 VR0822 R0824 D0822 17 33 C0806 TP0835 C0822 J0801 TP0972 R0973 TP0973 1 128 R0945 R0944 4 Q0933 R0977 C0972 C0982 R0978 R0972 R0976 R0941 R0905 R0931 2 1 4 Q0931 2 R0932 C0931 R0936 8 Q0932 1 R0933 R0935 R0934 1 5 C0933 R0842 R0844 R0848 R0849 TP0837 R0845 R0907 U0931 R0946 4 C0932 R0901 D0831 R0837 R0906 R0836 R0815 C0816 C0818 C0819 R0843 C0843 R0903 R0902 R0904 R0841 TP0833 R0847 C0842 R0943 3 C0810 1 64 R0838 C0973 R0942 1 P0801 R0812 R0810 R0833 TP0971 Q0934 2 C0833 R0832 R0835 49 TP0834 TP0836 R0974 VR0817 C0979 C0981 TP0975 VR0816 C0978 R0938 R0937 C0980 TP0974 C0971 C0812 C0977 Q0843 4 U0832 5 1 VR0811 3 C0974 C0976 R0817 C0984 C0975 R0816 C0985 R0813 R0814 VR0812 C0983 12 C0808 C0821 C0817 C0811 C0813 U0831 R0975 R0834 C0815 TP0838 R0859 R0858 R0811 102 103 R0862 Q0841 C0807 R0948 R0822 R0825 TP0832 R0864 R0861R0865 C0805 R0947 R0821 R0863 U0971 C0804 U0833 R0831 R0860 C0803 R0877 Q0821 R0853 1 C0802 Q0822 TP0831 VR0821 R0878 C0832 R0852 Q0877 R0879 D0821 R0857 R0856 R0851 R0850 Q0823 Q0879 Q0878 R0855 39 38 64 65 8 R0910 R0908 R0909 ZWG0130137 Figure 4-6. PRO5100/PRO7100/CDM1250/CDM1550 Control Head Bottom Overlay 4-11 WARIS GM300 9 8 7 6 5 4 3 2 1 10 Transceiver Interface J0801 CONTROLHEAD CONNECTOR Microphone Interface J0801-14 J0801-13 J0811 MICROPHONE CONNECTOR SCI_TX J0801-12 5V R0811 51K R0810 13K C0810 C0811 470pF NU 470pF C0812 C0813 470pF VR0811 33V NU 470pF ANALOG_INPUT_2 J0811-10 R0817 J0811-2 C0808 82pF NU Status LED FLT_A+ J0801-8 22 J0811-3 GROUND J0811-4 FLT_A+ J0801-7 5V 5V J0801-6 HANDSET_AUDIO HOOK J0801-5 J0811-5 PTT_IRDECODER J0811-6 D0877 red MIC MIC J0801-3 FLT_A+ PTT_IRDEC J0801-2 ON_OFF_CONTROL BUS+ J0801-1 R0814 J0811-7 270 LED_CNTRL(0:8) Q0877 Q0878 Q0879 R0877 270 R0878 270 R0879 270 HANDSET_AUDIO HANDSET_AUDIO J0811-8 R0815 3 13K AN(0:4) VR0816 20V 5V Q0822 ON_OFF_SENSE TAB1 VOLTAGE_SENSE POS VAR 5V R0836 10K TAB 1 SCI_RX TP0836 R0837 33K 18 PE6_AN6 20 PE7_AN7 47 50 51 52 53 54 PD0_RXD PD1_TXD PD2_MISO PD3_MOSI PD4_SCK PD5_SS* 5V BUS+ 4 FLT_A+ D0831 AN(0:4) R0834 270 D0822 R0822 22K R0824 4.7K VR0822 5.6V 5.6V C0821 470pF NU C0822 2.2uF R0838 10K PB0_A8 PB1_A9 PB2_A10 PB3_A11 PB4_A12 PB5_A13 PB6_A14 PB7_A15 12 11 10 9 8 7 6 5 0 1 2 3 4 5 6 7 R0851 R0852 47K 47K NU 5V 8 R0853 47K NU R0850 47K NU CH_KP_ID(0:7) R0854 47K NU R0855 47K R0858 47K R0859 47K R0856 R0857 47K 47K NU LED_CNTRL(0:8) SCI_TX R0860 100K R0861 100K R0862 100K R0863 4.7K R0864 4.7K R0865 4.7K S0852 0 R0823 50K NEG GND 3 BL_GREEN BL_RED C0843 2.2uF 0 5V R0821 10K VPP TP0834 TP0835 BOOT_MODE FLT_A+ TP0831 TP0832 5V TP0838 GND 0 1 2 3 4 5 6 7 34 36 37 38 39 40 41 42 1 LM50 5V PC0_AD0 PC1_AD1 PC2_AD2 PC3_AD3 PC4_AD4 PC5_AD5 PC6_AD6 PC7_AD7 R0848 68K NU C0842 2.2uF NU R0849 47K S0854 S0853 SWITCH 2 5V U0834 1 LM50 POS FLT_A+ TEMP_SENSE 2 VOUT 5V ON_OFF_CONTROL CH_REQUEST 0 13 PE0_AN0 1 15 PE1_AN1 2 17 PE2_AN2 3 19 PE3_AN3 4 14 PE4_AN4 16 PE5_AN5 CH_REQUEST R0847 68K 1 AN(0:4) 1 USW_5V 1 R0835 100 2 0.1uF NU 2 C0833 2 R0825 1K NC3 6 NC4 7 NC5 8 PTT_IRDEC 3 INPUT RESET 1 R0843 10K Q0843 ON_OFF_SENSE 3 D0821 Q0823 2 3 NC1 5 NC2 28 30 1 64 63 62 59 58 57 56 4 MC33064 5V CLK_E STRA_AS STRB_RW* U0831 31 33 EXTAL MC68HC711E9 PA0_IC3 XTAL CONTROLLER PA1_IC2 46 IRQ PA2_IC1 45 XIRQ PA3_OC5_OC1 43 RESET PA4_OC4_OC1 PA5_OC3_OC1 27 PA6_OC2_OC1 25 MODA_LIR* MODB_VSTBY PA7_PA1_OC1 MC68HC711E9 U0832 MC33064 C0823 .01uF 4 GND 10V 3 C2 Q0841 HOOK R0845 4.7K 5 PTT_IRDEC R0833 47K R0844 10K 6 10V R0841 10K R0842 47K 4 R0832 2.2K VR0821 29 2 GND 5V FLT_A+ 5V 5V 5V 5 C1 1 R0831 1MEG 7 Q0821 RESET 6 ON/OFF Section ?X NC6 35 NC7 44 NC8 48 NC9 60 NC10 61 CSTCC8.00MG RESET TP0833 Controller Section C0832 0.1uF C0831 3.3uF U0833 CSTCC8.00MG VDD 55 22 VRH VRL 21 VR0817 20V C0815 C0816 C0817 C0818 C0819 470pF 470pF 82pF 470pF 470pF NU NU C0806 C0805 C0804 C0803 C0802 470pF 82pF 470pF 470pF 470pF NU NU C0807 470pF R0816 51K 5V 5 6 7 23 VSS1 24 VSS2 49 VSS3 2 3 NC1 NC2 4 NC3 26 NC4 32 NC5 ANALOG_INPUT_3 J0811-9 7 BUS+ D0879 green D0880 yellow BUS+ J0801-4 R0813 10 2 MIC 2 P0801-2 1 HOOK AN(0:4) 5.6V P0801-1 J0801-10 J0801-9 33V R0812 22 FLT_A+ J0811-1 5V VR0812 5.6V J0801-11 CONTROL HEAD ID USW_5V SCI_TX TP0837 1 KEYPAD ID ZWG0130241 R0850 R0851 R0852 R0853 R0855 R0856 CONTROLHEAD PRO5100/CDM1250 NU NU NU USED USED USED R0857 R0858 USED NU CONTROLHEAD PRO7100/CDM1550 NU NU USED NU USED USED NU USED Figure 4-7. PRO5100/PRO7100/CDM1250/CDM1550 Control Head Schematic Diagram 4-12 Keypad B Layout P1 SW0906 SW0905 P2 SW0903 1 5 4 8 2 6 3 7 P4 SW0908 1 5 4 8 2 6 3 7 P1 P5 P4 P8 P2 P6 P3 P7 5V R0901 51K AN(0:4) P1 SW0906 SW0904 SW0902 SW0909 R0906 51K SW0907 S0906 P1 P5 P4 P8 P2 P6 P3 P7 1 5 4 8 2 6 3 7 P1 P5 P4 P8 P2 P6 P3 P7 1 5 4 8 2 6 3 7 P1 P5 P4 P8 P2 P6 P3 P7 ROW1 P4 SW0908 COL1 R0902 13K R0907 13K ROW2 COL2 R0903 22K ROW2 R0904 43K R0909 43K R0905 130K NU R0910 130K NU COL4 R0909 NU USED ROW5 P1 P5 P4 P8 P2 P6 P3 P7 1 5 4 8 2 6 3 7 P1 P5 P4 P8 P2 P6 P3 P7 COL5 S0910 S0909 COL3 ROW4 CONTROLHEAD PRO7100/CDM1550 1 5 4 8 2 6 3 7 COL4 1 5 4 8 2 6 3 7 COL3 P1 P5 P4 P8 P2 P6 P3 P7 COL2 ZWG0130242 Figure 4-8. PRO5100/PRO7100/CDM1250/CDM1550 Control Head Keypad Schematic ROW3 R0908 22K ROW3 CONTROLHEAD PRO5100/CDM1250 S0908 S0907 1 SW0901 1 5 4 8 2 6 3 7 P1 P5 P4 P8 P2 P6 P3 P7 ROW1 P1 P5 P4 P8 P2 P6 P3 P7 0 P3 SW0910 SW0905 P2 SW0903 1 5 4 8 2 6 3 7 P1 P5 P4 P8 P2 P6 P3 P7 S0905 S0904 1 5 4 8 2 6 3 7 Keypad C Layout S0903 S0902 S0901 P3 SW0910 SW0902 ROW4 4-13 BACKLIGHT GREEN Q0931 NU Q0933 FLT_A+ D0961 NU HSMG-H690 D0965 D0969 D0973 D0977 D0985 R0941 10K R0942 33K D0962 NU D0966 D0963 NU D0967 BL_GREEN D0970 D0974 D0978 D0982 D0971 D0975 D0979 D0983 R0932 33K NU D0987 D0972 D0976 D0980 D0984 D0988 Q0934 R0933 BL_RED 4.7K R0944 100K 7 8 Q0932 NU 4.7K NU FLT_A+ 6 R0946 10K 5 1 C0931 0.1uF 4 MC33072 U0931-1 8 2 R0947 10 R0948 10 D0943 NU D0947 NU D0951 NU D0955 NU D0932 D0936 NU NU D0940 NU D0944 NU D0948 NU D0952 NU D0956 NU D0933 NU D0937 NU D0941 NU D0945 NU D0949 NU D0953 NU D0957 NU D0934 NU D0938 NU D0942 NU D0946 NU D0950 NU D0954 NU D0958 NU 3 R0935 10K R0936 10K 4 MC33072 C0933 0.1uF D0939 NU R0934 100K NU R0945 10K MC33072 U0931-2 FLT_A+ D0935 NU D0931 NU R0931 10K NU D0986 D0964 D0968 NU R0943 FLT_A+ D0981 MC33072 C0932 0.1uF NU R0937 10 R0938 10 NU D0981 D982 D0983 D0984 CONTROL HEAD PRO5100/CDM1250 CONTROL HEAD PRO7100/CDM1550 NU NU NU USED USED USED NU USED ZWG0130243 Figure 4-9. PRO5100/PRO7100/CDM1250/CDM1550 Control Head LCD Schematic 1 0 3 2 5V 22 23 14 12 11 10 9 6 8 15 16 17 18 19 20 21 RESET C0971 1uF C0973 1uF TP0971 C0974 0.1uF TP0972 Figure 4-10. PRO5100/PRO7100/CDM1250/CDM1550 Control Head Display Schematic 0 1 2 3 4 5 6 7 R0973 1.2MEG C0975 0.1uF C0977 0.1uF NU C0976 0.1uF C0978 0.1uF D0 D1 D2 D3 D4 D5 D6 D7 V1 V2 V3 V4 V5 U0971 C0972 1uF NU CH_KP_ID(0:7) TP0973 LED_CNTRL(0:8) R0972 0 R0975 200K R0974 1.8MEG R0976 100K C0980 0.1uF C0979 C0981 0.1uF NU 0.1uF NU R0977 200K NU C0983 2.2uF C0984 .01uF COM8 COM9 COM10 COM11 COM12 COM13 COM14 COM15 40 41 42 43 44 45 46 47 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 32 33 34 35 36 37 38 39 SEG0_C1 SEG1_C2 SEG2_C3 SEG3_C4 SEG4_C5 SEG5_C6 SEG6_C7 SEG7_C8 SEG8_C9 SEG9_C10 SEG10_C11 SEG11_C12 SEG12_C13 SEG13_C14 SEG14_C15 SEG15_C16 SEG16_C17 SEG17_C18 SEG18_C19 SEG19_C20 SEG20_C21 SEG21_C22 SEG22_C23 SEG23_C24 SEG24_C25 SEG25_C26 SEG26_C27 SEG27_C28 SEG28_C29 SEG29_C30 SEG30_C31 SEG31_C32 SEG32_C33 SEG33_C34 SEG34_C35 SEG35_C36 SEG36_C37 SEG37_C38 SEG38_C39 SEG39_C40 SEG40_C41 SEG41_C42 SEG42_C43 SEG43_C44 SEG44_C45 SEG45_C46 SEG46_C47 SEG47_C48 SEG48_C49 SEG49_C50 SEG50_C51 SEG51_C52 SEG52_C53 SEG53_C54 SEG54_C55 SEG55_C56 SEG56_C57 SEG57_C58 SEG58_C59 SEG59_C60 SEG60_C61 SEG61_C62 SEG62_C63 SEG63_C64 SEG64_C65 SEG65_C66 SEG66_C67 SEG67_C68 SEG68_C69 SEG69_C70 NC COM0_R1 COM1_R2 COM2_R3 COM3_R4 COM4_R5 COM5_R6 COM6_R7 COM7_NC COMS 04B01 13 VSS 7 VDD 24 25 26 27 28 29 30 31 1 2 3 4 5 COM0 COM1 COM2 COM3 COM4 COM5 COM6 COM7 COMS 48 SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 SEG41 SEG42 SEG43 SEG44 SEG45 SEG46 SEG47 SEG48 SEG49 SEG50 SEG51 SEG52 SEG53 SEG54 SEG55 SEG56 SEG57 SEG58 SEG59 SEG60 SEG61 SEG62 SEG63 SEG64 SEG65 SEG66 SEG67 SEG68 SEG69 SEG70 SEG71 SEG72 SEG73 SEG74 SEG75 SEG76 SEG77 SEG78 SEG79 FR CL M_S CAP1_POS CAP1_NEG CAP2_POS CAP2_NEG VR VOUT SR2 SR1 WR RD CS2 CS1 A0 4-14 DISPLAY THE LCD IS OF HARDWAREKITS GLN7358A (EUR) and GLN7359A (US) H0971 04B01 NU SED1526F0A Display Driver SED1526F0A 5V C0985 2.2uF TP0974 R0978 100K NU VOLTAGE_SENSE C0982 0.1uF NU TP0975 5V ZWG0130244 4-15 Table 4-2: PRO5100/PRO7100/CDM1250/CDM1550 Control Head Parts List Reference Designator C0803 C0804 C0805 C0807 C0811 C0812 C0813 C0815 C0816 C0817 C0822 C0823 C0831 C0832 C0843 C0931 C0933 C0971 C0973 C0974 C0975 C0976 C0978 C0980 C0983 C0984 C0985 D0821 D0822 D0831 D0877 D0879 D0880 D0951* D0952* D0953* D0954* D0965 D0966 D0967 D0968 D0969 D0970 D0971 D0972 D0973 D0974 D0975 D0976 Motorola Part No. 2113741F17 2113741F17 2113740F49 2113741F17 2113741F17 2113741F17 2113741F17 2113741F17 2113741F17 2113740F49 2311049A40 2113741F49 2311049A42 2113743E20 2311049A40 2113743E20 2113743E20 2311049A07 2311049A07 2113743E20 2113743E20 2113743E20 2113743E20 2113743E20 2311049A09 2113741F49 2311049A40 4813833C02 4813833C02 4880236E05 4886171B01 4886171B04 4886171B03 4886171B02 4886171B02 4886171B02 4886171B02 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 Description 470pF 470pF 100pF 470pF 470pF 470pF 470pF 470pF 470pF 82pF 2.2uF 10nF 3.3uF 100nF 470pF 100nF 100nF 1uF 1uF 100nF 100nF 100nF 100nF 100nF 2.2uF 10nF 2.2 uF Dual Schottky Dual Schottky Schottky LED, Red LED, Green LED, Yellow LED, Orange LED, Orange LED, Orange LED, Orange LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green Reference Designator D0977 D0978 D0979 D0980 D0981* D0982* D0983* D0984* D0985 D0986 D0987 D0988 J801 J811 P0801 Q0821 Q0822 Q0823 Q0841 Q0843 Q0877 Q0878 Q0879 Q0933 Q0934 R0810 R0811 R0812 R0813 R0814 R0815 R0816 R0817 R0821 R0822 R0823 R0824 R0825 R0831 R0832 R0833 R0834 R0835 R0836 R0837 R0838 R0841 R0842 R0843 R0844 R0845 Motorola Part No. Description 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 4886171B04 0902636Y02 2864287B01 2809926G01 4805921T02 4880048M01 4805921T02 4880048M01 4880048M01 4813824A10 4813824A10 4813824A10 4813824A08 4813824A10 0662057A76 0662057A90 0662057A09 0662057A01 0662057A35 0662057A76 0662057A90 0662057A09 0662057A73 0662057A82 1805911V01 0662057A65 0662057A49 0662057B22 0662057A57 0662057A89 0662057A35 0662057A25 0662057A73 0662057A85 0662057A73 0662057A73 0662057A89 0662057A73 0662057A73 0662057A65 LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green LED, Green 12-pin connector 10-pin connector 2-pin connector Transistor, dual Transistor, NPN Transistor, dual Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Transistor, NPN Transistor, PNP Transistor, NPN 13K 51K 22 10 270 13K 51K 22 10K 24K Volume Pot 4K 1K 1M 2K 47K 270 100 10K 33K 10K 10K 47K 10K 10K 4K Reference Designator Motorola Part No. R0847 R0849 R0852* R0853** R0855 R0856 R0857** R0858* R0859 R0860 R0861 R0862 R0863 R0864 R0865 R0877 R0878 R0879 R0901 R0902 R0903 R0904 R0906 R0907 R0908 R0909* R0935 R0936 R0937 R0941 R0942 R0943 R0944 R0945 R0946 R0947 R0948 R0972 R0973 R0974 R0975 R0976 U0831 U0832 U0833 U0834 0662057A93 0662057A89 0662057A89 0662057A89 0662057A89 0662057A89 0662057A89 0662057A89 0662057A89 0662057A97 0662057A97 0662057A97 0662057A65 0662057A65 0662057A65 0660076A35 0660076A35 0660076A35 0662057A90 0662057A76 0662057A81 0662057A88 0662057A90 0662057A76 0662057A81 0662057A88 0662057A73 0662057A73 0660076A01 0662057A73 0662057A85 0662057A65 0662057A97 0662057A73 0662057A73 0660076A01 0660076A01 0662057B47 0662057B24 0662057B28 0662057G29 0662057G13 5113802A24 5113815A02 4886061B01 5185963A15 U0931 U0971 VR0812 VR0816 5113818A03 5186158B01 4813830A15 4805656W09 Description 22 47K 47K 47K 47K 47K 47K 47K 47K 100K 100K 100K 4K 4K 4K 270 270 270 51K 13K 22K 43K 51K 13K 22K 43K 10K 10K 10 10K 33K 4K 100K 10K 10K 10 10 0 1.2M 1.8M 200K 100K IC Voltage Sensor 8 MHz Temperature Sensor IC LCD Driver Diode, Zener Reference Designator Motorola Part No. Description VR0817 4805656W09 Diode, Zener VR0821 4813830A23 Diode, 5.6V VR0822 4813830A15 Diode, 5.6V * Models PRO7100/CDM1550 Only ** Models PRO5100/CDM1250 Only 4-16 This page intentionally left blank 4-17 OPT_PTT GP1 GP2 GP3 GP4 GP5 GP6 GP7 GP8 BUS+ RESET CNTRL_AUDIO(0:7) GPIO(0:13) SPI(0:10) OPT_PTT GP1 GP2 GP3 GP4 GP5 GP6 GP7 GP8 BUS+ RESET CNTRL_AUDIO(0:7) PASUPVLTG EXT_SWB+ INT_SWB+ 9V3 5VD VSTBY BATTERY_VOLTAGE IN_5V_RF_REG EMERGENCY_CONTROL IGNITION_CONTROL DC_POWER_ON ON_OFF_CONTROL FLT_A+ PASUPVLTG EXT_SWB+ INT_SWB+ 9V3 5VD VSTBY 5V_RF BATTERY_VOLTAGE IN_5V_RF_REG ON_OFF_CONTROL DC_POWER_ON IGNITION_CONTROL EMERGENCY_CONTROL BOOT_CNTRL INT_MIC EXT_MIC DISCAUDIO RX_AUD_RTN TX_AUD_RTN FLAT_TX_RTN FLAT_RX_SND TX_AUD_SND URX_SND MODIN SPKRSPKR+ HANDSET_AUDIO RX_FLAT_FILTERED_AUDIO MOSBIAS_3 MOSBIAS_2 PA_PWR_SET NOISE_BLNKR CNTLVLTG TEMPSENSE RX_ADAPT 16_8MHZ LOCK RSSI CH_ACT VS_RAC VS_INT VS_AUDSEL VS_GAINSEL VS_MIC EXP_BD_REQ UART_RX UART_TX SCI_TX RDY FLT_A+ INT_SWB+ 9V3 CH_ACT DC_POWER_ON 5VD 5V_RF AUDIO INT_MIC EXT_MIC VS_AUDSEL NOISE_BLNKR PA_PWR_SET MOSBIAS_2 MOSBIAS_3 MODIN URX_SND DISCAUDIO TX_AUD_SND RX_AUD_RTN FLAT_RX_SND TX_AUD_RTN RX_FLAT_FILTERED_AUDIO FLAT_TX_RTN HANDSET_AUDIO VS_MIC SPKR+ 16_8MHZ SPKR- TEMPSENSE CNTLVLTG UART_RX MOSBIAS_2 MOSBIAS_3 VS_RAC VS_GAINSEL VS_AUDSEL 16_8MHZ CH_ACT MODIN URX_SND TX_AUD_SND FLAT_RX_SND RX_FLAT_FILTERED_AUDIO HANDSET_AUDIO SPKRSPKR+ VS_INT RSSI LOCK INT_MIC EXT_MIC DISCAUDIO RX_AUD_RTN TX_AUD_RTN FLAT_TX_RTN OPT_PTT GP5_IN_ACC9 GP8_IN_OUT_ACC14 SPI(0:10) BUS+ GP1_IN_ACC3 GP2_OUT_ACC4 SPI(0:10) ON_OFF_CONTROL IO GP6_IN_ACC10 GP7_IN_OUT_ACC12 IGNITION_CONTROL UART_TX RX_ADAPT NOISE_BLNKR PA_PWR_SET GPIO(0:13) BOOT_CNTRL 5V_RF EMERGENCY_CONTROL GP3_IN_ACC6 GP4_IN_OUT_ACC8 5VD SCI_TX GP6_IN_ACC10 GP4_IN_OUT_ACC8 GP5_IN_ACC9 RDY EXP_BD_REQ EXT_SWB+ 9V3 CNTLR_AUDIO(0:7) RESET SPI(0:10) GPIO(0:13) FLT_A+ CNTLR_AUDIO(0:7) RESET SUPPLY_VOLTAGE PASUPVLTG INT_SWB+ GP7_IN_OUT_ACC12 IN_5V_RF_REG VS_MIC FLT_A+ GP8_IN_OUT_ACC14 OPT_PTT RESET BUS+ GP1_IN_ACC3 GP2_OUT_ACC4 GP3_IN_ACC6 SPI(0:10) GPIO(0:13) SPI(0:10) FLT_A+ 5VD VSTBY CONTROLLER BOOT_CNTRL BATTERY_VOLTAGE VOICE_STORAGE ON_OFF_CONTROL UART_RX RDY VS_RAC VS_INT EXT_BD_REQ RSSI LOCK TEMPSENSE 5VD VS_GAINSEL SCI_TX UART_TX RX_ADAPT RX_AUD_RTN VS_RAC VS_INT VS_MIC VS_AUDSEL FLAT_RX_SND CNTLVLTG FLT_A+ PASUPVLTG EXT_SWB+ INT_SWB+ 9V3 5VD VSTBY 5V_RF BATTERY_VOLTAGE IN_5V_RF_REG ON_OFF_CONTROL DC_POWER_ON IGNITION_CONTROL EMERGENCY_CONTROL BOOT_CNTRL INT_MIC EXT_MIC DISCAUDIO RX_AUD_RTN TX_AUD_RTN FLAT_TX_RTN FLAT_RX_SND TX_AUD_SND URX_SND MODIN SPKRSPKR+ HANDSET_AUDIO RX_FLAT_FILTERED_AUDIO MOSBIAS_3 MOSBIAS_2 PA_PWR_SET NOISE_BLNKR CNTLVLTG TEMPSENSE RX_ADAPT 16_8MHZ LOCK RSSI CH_ACT VS_RAC VS_INT VS_AUDSEL VS_GAINSEL VS_MIC EXP_BD_REQ UART_RX UART_TX SCI_TX RDY ZWG0130228 Figure 4-11. Complete Controller Schematic Diagram 4-18 5VD 5VD R0102 4.7K R0101 10K FLT_A+ R0115 10K ON_OFF_CONTROL R0116 0 NU TP0101 1 ECLK R0127 0 NU 2 3 12 27 R0126 27K NU DATA_BUS(0:7) 5VD 5VD 8 VCC 30 32 EN_CE EN_OE 7 EN_WE FLASH_OE R_W R0121 100K 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 20 19 18 17 16 15 14 13 3 2 31 1 12 4 5 11 10 6 9 A0 IO0 A1 IO1 A2 IO2 A3 IO3 A4 IO4 IO5 A5 IO6 A6 IO7 A7 A8 A9 A10 A11 A12 U0121 A13 A14 512kx8bit A15 A16 A17 A18 GND 24 21 22 23 25 26 27 28 29 C0123 100pF NU C0122 0.1uF C0121 0.1uF FLASH_CE VOX CSX CLK DATA MISO 47 46 45 44 43 UART_CS NC_PH5_CSGP1 42 41 RAM_CS 38 FLASH_CE UART_TX 7 6 5 4 3 2 1 0 GP7_OUT GP4_OUT FROM_U0101_47 FROM_U0101_46 0 1 2 3 4 5 6 7 28 VCC 20 EN_CS 22 EN_OE EN_WE 27 0 1 2 3 4 5 6 7 11 12 13 15 16 17 18 19 A0 10 A1 9 A2 8 A3 7 A4 6 A5 5 A6 4 A7 3 A8 25 A9 24 U0122 A10 21 RAM A11 232 32kx8bit A12 A13 26 1 A14 GND 14 IO1 IO2 IO3 IO4 IO5 IO6 IO7 IO8 0 1 2 3 4 5 6 7 30 31 32 33 34 35 36 37 PH0_PW1 PH1_PW2 PH2_PW3 PH3_PW4 PH4_CSIO PH5_CSGP1 PH6_CSGP2 PH7_CSPROG 16 VCC EN_CS1 6 EN_CS2 4 EN_CS3 5 1HC138_A0 A0 HC138_A1 A1 2HC138_A2 3 GND A2 U0101 MC68HC11FL0 MICROPROCESSOR PC0_DATA0 PC1_DATA1 PC2_DATA2 PC3_DATA3 PC4_DATA4 PC5_DATA5 PC6_DATA6 PC7_DATA7 18 RAM_CS 17 16 15 R_W 14 13 12 0 11 1 10 2 9 3 8 4 7 5 6 6 5 7 4 8 3 9 2 10 1 11 0 12 13 14 PJ0_CSGP3 PJ1_CSGP4 PJ2 PJ3 PJ4 PJ5 PJ6 PJ7 71 72 73 74 75 76 77 78 PE0_AN0 PE1_AN1 PE2_AN2 PE3_AN3 PE4_AN4 PE5_AN5 PE6_AN6 PE7_AN7 67 66 65 64 63 62 61 60 7 R0177 4.7K 4 RESET 12 GP4_IN GP4_IN_OUT_ACC8 GP4_OUT 8 R0181 4.7K R0105 100K See NOTE R0106 0 See NOTE 7 8 5VD R0114 10K GP5_IN_ACC9 R0179 GP5_IN 47K R0117 R0113 10K Q0177 5VD 5VD GP3_IN GP5_IN R0178 47K D0179 0 1 2 3 4 5 6 EXT_BD_REQ BATTERY_VOLTAGE CNTLVLTG TEMPSENSE TP0103 GP3_IN_ACC6 30K 5VD RESET C0107 1000pF 3.9K R0176 R0170 10K IRQ 1 GP3_IN PE6 5VD H/W-Version & Memory size 5VD 3 GP6_IN Q0181 R0182 GP6_IN_ACC10 47K R0183 5VD 9 13 GP7_IN 4.7K R0184 47K GP7_IN_OUT_ACC12 GP7_OUT Q0183 R0185 5VD 5 GP7_IN GP8_OUT GP4_OUT GP7_OUT 9 10 10 GP8_IN 4.7K R0186 47K GP8_IN_OUT_ACC14 GP8_OUT Q0185 12 13 NOTE 10MEG R0132 330K R0105 R0106 R0128 R0109 MDC/Sel5 Y0131 XTAL C0131 22pF 10K 0 1 2 R_W FROM_U0101_46 FROM_U0101_47 1 4 OUT IN 38.40KHz NC1 NC 3 2 10K R0175 ECLK (EXT_BD_PTT & DATA_PTT) Q0173 5VD R0108 2.2K HC138_A0 HC138_A1 HC138_A2 GP6_IN GP4_IN GP8_IN GP1_IN GP2_OUT_ACC4 R0174 GP2_OUT GPIO(0:13) C0106 100pF NU RSSI LOCK VS_INT VS_RAC VS_GAINSEL R0131 11 5VD VDD 12 VDDR 88 VDDL 39 AVDD 59 LVOUT 95 VRL 68 VRH 69 EXTAL 90 XTAL 91NC_XTAL 86 85 84 83 82 81 80 79 PA7_PA1_OC1 PA6_OC2_OC1 PA5_OC3_OC1 PA4_OC4_OC1 PA3_IC4_OC5_OC1 PA2_IC1 PA1_IC2 PA0_IC3 PG0_XA13 PG1_XA14 PG2_XA15 PG3_XA16 PG4_XA17 PG5_XA18 PG6_AS 13 VSS 87 VSSR 40 VSSL 70 AVSS R_W 5VD UART_CS OPT_PTT 6 16 20 19 17 18 5 PI7 PI6 PI5 PI4 PI3 PI2 PI1 PI0 1 R0124 0 NU 13 14 28 26 10 7 11 8 25 24 23 22 21 20 19 18 5 Y0 Y1 Y2 Y3 Y4 Y5 Y6 7 Y7 R0104 10K ECLK 89 IRQ 96 XIRQ 48 RESET 94 PG7_R_W 4 MODA_LIR 58 MODB_VSTBY 57 49 50 51 52 53 54 55 56 0 RD U0125 TD DSR XTL0 CTS DTR RTS RS0 D7 RS1 D6 R_W* D5 D4 CS0 D3 CS1 D2 D1 XTL1 D0 CLK RC VSS 1 EE_CS 15 OPT_CS 14 VS_CS 13 EXP1_CS12 EXP2_CS11 REF_CS 10 LVZIF_CS 9 C0101 C0102 C0103 C0104 C0105 100pF 100pF 100pF 100pF 100pF NU NU NU NU NC_PB7_ADDR15 7 PB7_ADDR15 NC_PB6_ADDR14 8 PB6_ADDR14 15 PB5_ADDR13 21 PB4_ADDR12 9 PB3_ADDR11 11 PB2_ADDR10 10 PB1_ADDR9 14 PBO_ADDR8 17 9 15 VDD DCD 0 1 2 3 4 5 6 8 PD6_LVIN PD5_SS PD4_SCK PD3_MOSI PD2_MISO PD1_TXD PD0_RXD ON_OFF_SENSE FLT_A+ C0141 0.1uF 5VD 22 23 24 25 26 27 28 29 12 5VD R0173 4.7K U0141 MC74HC138A 5VD 3 2 1 100 99 98 97 RX_ADAPT IRQ FLASH ROM 16 UART R0125 27K NU UART_RX 5VD SYN HSIO F1200 RDY FLASH_OE EEPROM U0111 16Kx8bit R0107 47K NU 5VD 7 SPI(0:10) 0 NU 5VD R0109 0 1 R0112 5VDC (0VDC during On/Off pressed and during head request) See NOTE 6 R0111 0 ON_OFF_CONTROL See NOTE R0128 0 GP1_IN_ACC3 6 5 4 3 7 8 910 X25128_2.7V GP1_IN Q0171 PF7_ADDR7 PF6_ADDR6 PF5_ADDR5 PF4_ADDR4 PF3_ADDR3 PF2_ADDR2 PF1_ADDR1 PFO_ADDR0 4 5VD Q0110 SPI(0:10) SPI(0:10) 6 1 3 7 5 R0171 5VD 4.7K 6 1 0.1uF 8 VCC CLK CS WP HOLD VSS SI 5VD 10K C0112 SO R0110 10K NU 2 CLK DATA EE_CS MISO C0111 NU 100pF 2 3 0 8 9 TP0102 LSIO SPI(0:10) 10 5VD GPIO(0:13) R0172 CNTLR_AUDIO(0:7) CNTLR_AUDIO(0:7) SPI(0:10) R0152 24K C0151 .01uF LSIO CHACT SQ_DET HSIO CNTLR_AUDIO(0:7) 5VD VSTBY Q0151 VR0151 5.6V SCI_TX C0125 0.1uF NU R0151 24K D0151 BOOT_CNTRL D0101 CNTLR_AUDIO(0:7) TP0151 5VDC (0VDC during boot mode) 1 BUS+ VDDSYN 92 XFC 93 5VD FLT_A+ MPT U0125 Used NU NU Used NU NU Used Used NU Used C0132 22pF ADDR_BUS(0:18) ZWG0130229-A Figure 4-12. Controller Control Schematic Diagram R0521 220 NU C0441 470pF C0442 470pF C0443 470pF C0445 470pF C0444 470pF C0447 470pF C0446 470pF C0449 470pF C0448 470pF C0451 470pF C0452 470pF C0454 470pF C0453 470pF C0456 470pF C0455 470pF C0457 470pF C0459 470pF C0471 470pF C0470 470pF C0472 470pF C0473 470pF C0474 470pF C0476 470pF C0477 470pF C0478 470pF C0460 470pF 9 DATA DATA 9 SPI_DATA CLK 8 SPI_CLK MISO SPI_MISO VS_CS VS_CS OPT_CS OPT_CS DATA_CNTLR_1 R0481 0 DATA_CNTLR_2 R0482 0 CLK_CNTLR_1 UART_RX VS_MIC INT_MIC EXT_MIC ON_OFF_CONTROL FLAT_TX_RTN EXP_BD_REQ EXP_BD_PTT RDY RESET BUS+ GP4_IN_OUT_ACC8 OPT_PTT DATA TO/FROM RF DATA 8 CLK L0482 390nH NU CLK_CNTLR_2 CLK CLK 5V_CNTLR_1 CSX_CNTLR_2 CSX 10 EXP1_CS EXP1_CS L0481 390nHNU 8 CLK 5V 5V_RF DISCAUDIO_CNTLR_1 CSX 7 CSX_CNTLR_1 3 2 DISCAUDIO DISCAUDIO PA_PWR_SET_1_CNTLR_1 CSX C0482 470pF PA_PWR_SET PA_PWR_SET MOSBIAS_2_CNTLR_1 MOSBIAS_2 MOSBIAS_2 MOSBIAS_3_CNTLR_1 1 TP0481 1 RX_ADAPT RX_ADAPT MOSBIAS_3 MOSBIAS_3 NOISE_BLNKR_CNTLR_1 NOISE_BLNKR NOISE_BLNKR MODIN_CNTLR_1 RESET_CNTLR_1 RESET RESET MODIN MODIN 16_8MHZ_CNTLR_1 CNTLVLTG_CNTLR_1 CNTLVLTG CNTLVLTG 16_8MHZ 16_8MHZ TEMPSENSE_CNTLR_1 PASUPVLTG NU 9V3 C0488 470pF C0487 470pF 9V3_CNTLR_1 9V3 C0499 470pF C0497 470pF C0495 470pF C0496 470pF LOCK C0493 470pF C0491 470pF LOCK_CNTLR_1 PASUPVLTG_CNTRL_1 PASUPVLTG INT_SWB INT_SWB+ RSSI RSSI LOCK C0494 470pF RSSI_CNTLR_1 INT_SWB_CNTLR_1 C0492 470pF TEMPSENSE TEMPSENSE 9V3_CNTLR_2 9V3 J0501 ACCESSORY 20-PIN CONNECTOR R0525 100K NU NU NU NU NU NU C0526 470pF NU C0527 470pF C0525 470pF C0524 470pF C0523 470pF C0521 470pF NU C0522 470pF C0505 470pF C0504 470pF C0503 470pF C0502 470pF VR0504 33V C0501 .01uF C0541 VR0501 0.47uF 20V C0520 470pF R0524 220 See NOTE R0528 0 See NOTE 27K R0541 NU NU J0501-1 J0501-20 J0501-2 J0501-19 J0501-3 J0501-18 J0501-4 J0501-17 J0501-5 J0501-16 J0501-6 J0501-15 J0501-7 J0501-14 J0501-8 J0501-13 J0501-9 J0501-12 J0501-10 J0501-11 19 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 N.C. PCB N.C. SPEAKEREXT_MIC_AUDIO DIG_IN1 DIG_OUT2 (EXTERNAL_ALARM) FLAT_TX_AUDIO DIG_IN_3 = Sel5/MDC UART_RX = MPT GROUND DIG_IN_OUT_4 = Sel5/MDC UART_TX = MPT DIG_IN_5 WITH WAKEUP (EMERGENCY) DIG_IN_6 WITH WAKEUP (IGNITION) FLAT/FILTERED_RX_AUDIO DIG_IN_OUT_7 SWB+ DIG_IN_OUT_8 RSSI SPEAKER+ BUS+ BOOT_CNTRL 20 2 4 6 8 10 12 14 16 18 19 1 3 5 7 9 11 13 15 17 REAR VIEW Pin 1 to 16 used for standard accessories Pin 17 to 20 for special use R0529 47K R0531 NU NU NU NU NU C0534 470pF C0533 470pF R0510 4.7K C0532 470pF VR0510 33V VR0509 33V VR0503 20V C0531 470pF R0512 15K C0528 470pF R0511 100K VR0541 14V C0530 470pF GP7_IN_OUT_ACC12 C0512 470pF 560 C0511 470pF C0542 47uF C0510 470pF R0530 0 RX_FLAT_FILTERED_AUDIO UART_RX VS_MIC INT_MIC EXT_MIC ON_OFF_CONTROL FLAT_TX_RTN EXP_BD_REQ EXP_BD_PTT RDY NU 9 DATA SPI(0:10) C0508 470pF R0542 47K 0 NU RSSI CH_ACT 5VD FLT_A+ SPKRSPKR+ DISCAUDIO HANDSET_AUDIO UART_TX TO/FROM RF C0509 470pF FLT_A+ GP5_IN_ACC9 EMERGENCY_CONTROL FLT_A+ GP6_IN_ACC10 IGNITION_CONTROL R0527 NU RSSI CH_ACT 5VD FLT_A+ SPKRSPKR+ DISCAUDIO HANDSET_AUDIO UART_TX RESET BUS+ GP4_IN_OUT_ACC8 OPT_PTT VS_MIC VS_CS 9V3 Vddd VS_AUDSEL Det_Aud_Snd Rx_Aud_Rtn Tx_Aud_Snd Tx_Aud_Rtn Flat_Tx_Rtn Opt_Bd_En Rdy/Req Rx_Aud_Snd ON INT_EXT_Vdd Key_Row Key_Col PTT Key_Intrp VS_INT RST* LED_EN OFF_BATT_DATA_OUT VS_GAINSEL SrD_Rtn SrD_Snd R/W* CS* DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 A0 SCK_Snd VS_RAC Gnd C0506 470pF See NOTE GP3_IN_ACC6 GP4_IN_OUT_ACC8 NU R0522 220 NU R0523 VR0522 220 See NOTE 5.6V See NOTE VR0521 5.6V See NOTE NU 10 1 UART_RX 2 UART_TX 3 NC 4 NC 5 OPT_PTT 6 RDY 7 OPT_CS 8 GP4_IN_OUT_ACC8 9 EXP1_CS 10 EXP_BD_REQ 11 SPI_CLK 12 SPI_MISO 13 SPI_DATA 14 EXP_BD_PTT 15 GND 16 CH_ACT 17 DISCAUDIO 18 FLAT_TX_RTN J0551-42 C0576 470pF NU UART_RX UART_TX SPKREXT_MIC GP1_IN_ACC3 GP2_OUT_ACC4 FLAT_TX_RTN NU R0468 10 C0486 470pF C0591 0.1uF C0575 470pF NU NU J0551 INTERNAL OPTION BOARD 40-PINS CONNECTOR J0551-40 J0551-39 J0551-38 J0551-37 J0551-36 J0551-35 J0551-34 J0551-33 J0551-32 J0551-31 J0551-30 J0551-29 J0551-28 J0551-27 J0551-26 J0551-25 J0551-24 J0551-23 J0551-22 J0551-21 J0551-20 J0551-19 J0551-18 J0551-17 J0551-16 J0551-15 J0551-14 J0551-13 J0551-12 J0551-11 J0551-10 J0551-9 J0551-8 J0551-7 J0551-6 J0551-5 J0551-4 J0551-3 J0551-2 J0551-1 R0592 10 C0592 0.1uF C0593 0.1uF NU C0519 470pF NU R0533 0 EXT_SWB+ GP8_IN_OUT_ACC14 RSSI SPKR+ BUS+ BOOT_CNTRL R0535 1K MDC/Sel5 NU NU Used NU NU Used MPT Used Used NU Used Used NU 4.7K NU NU NU NU C0540 470pF C0538 470pF NU C0539 82pF C0537 470pF R0538 220 R0539 5VD C0535 470pF R0528 C0536 470pF R0524 C0518 470pF VR0522 C0517 82pF R0527 C0516 .01uF R0523 C0515 470pF VR0521 VR0537 5.6V C0514 470pF 220 R0537 VR0505 20V NOTE C0513 470pF 40 39 38 37 36 35 34 33 32 31 30 29 28 NC 27 NC 26 NC 25 NC 24 OPT_PTT 23 NC 22 VS_INT 21 RESET 20 5VD 19 NC 18 VS_GAINSEL 17 SPI_MISO 16 SPI_DATA 15 UART_RX 14 UART_TX 13 GP4_IN_OUT_ACC8 12 EXP1_CS 11 EXP_BD_REQ 10 EXP_BD_PTT 9 CH_ACT 8 DISCAUDIO 7 NC 6 FLT_A+ 5 NC 4 SPI_CLK 3 VS_RAC 2 GND 1 NU J0551-41 24K VS_MIC VS_CS 9V3 5VD VS_AUDSEL FLAT_RX_SND RX_AUD_RTN TX_AUD_SND TX_AUD_RTN FLAT_TX_RTN OPT_CS RDY URX_SND NU C0498 470pF C0554 0.1uF NU C0558 470pF NU NU NU C0485 470pF C0559 470pF NU NU C0484 470pF C0560 470pF NU NU R0467 NU R0591 NU C0461 470pF Note: Fuse is part of PCB In case fuse is blowen, replace it with R0410 P/N 0662057B47 470pF 470pF 470pF NU C0483 470pF 82pF NU C0462 470pF 0 NU C0428 C0429 C0430 C0431 NU C0463 470pF R0410 C0408 C0409 C0410 C0411 NU NU NU NU 82pF 470pF 470pF 470pF NU C0464 470pF Note NU J0451-1 J0451-2 J0451-3 J0451-4 J0451-5 J0451-6 J0451-7 J0451-8 J0451-9 J0451-10 J0451-11 J0451-12 J0451-13 J0451-14 J0451-15 J0451-16 J0451-17 J0451-18 C0466 470pF R0408 100 UART_RX UART_TX NC NC OPT_PTT RDY OPT_CS GPIO EXP1_CS EXP_BD_REQ CLK MISO DATA EXP_BD_PTT GND FAST_SQ DISCAUDIO FLAT_TX_RTN C0467 470pF 10 1 SCI_TX 2 SPKR+ 3 SPKR4 GROUND 5 EXP_BD_PTT 6 5VD 7 HANDSET_AUDIO 8 BUS+ 9 INT_MIC 10 FLT_A+ 11 ON_OFF_CONTROL 12 NC C0458 470pF J0451 EXPANSION BOARD 18-PIN CONNECTOR R0401 220 R0407 10 R0409 C0421 82pF C0422 470pF C0427 470pF C0426 470pF C0423 470pF C0401 NU 82pF C0402 NU 470pF C0403 NU 470pF J0401-1 J0401-2 J0401-3 J0401-4 J0401-5 J0401-6 J0401-7 J0401-8 J0401-9 J0401-10 J0401-11 J0401-12 C0468 470pF SCI_TX SPEAKER+ SPEAKERGROUND EXP_BD_PTT 5VD HANSET_AUDIO BUS+ INT_MIC FLT_A+ ON_OFF_CONTROL NC C0407 NU 470pF J0401 CONTROL HEAD 12-PIN CONNECTOR C0406 NU 470pF 4-19 NU ZWG0130230 A Figure 4-13. Controller I/O Schematic Diagram 4-20 9V3 9V3 R0201 100 R0202 R0204 C0201 10uF 80mV RMS 12 R0205 10K C0204 11 VAG C0212 10uF R0212 7.5K TP0221 U0211-4 4 MC3403 14 13 4.6VDC 560 560 9V3 C0211 0.1uF NU R0211 7.5K 1 INT_MIC R0207 2.2K C0203 2200pF NU 80mV RMS 0.1uF VS_MIC R0206 EXT_MIC 10K R0208 2.2K C0205 2200pF NU MODIN VS_AUDSEL 16_8MHZ TX_AUD_RTN TX_AUD_SND C0243 100pF C0221 C0251 0.1uF RX_AUD_RTN R0221 C0222 0.1uF URX_SND 200mV RMS R0252 56K 5V_RF 5V_RF C0226 0.1uF 48 47 46 45 44 43 42 41 40 39 38 37 0.1uF R0227 1M 1 2 3 4 5 6 7 8 9 10 11 12 PA_PWR_SET MOSBIAS_3 MOSBIAS_2 C0236 .033uF C0233 0.22uF NU C0231 4.7uF 5V_RF 5V_RF D0201 NU 5V_RF R0242 0 U0221 63A53 ASFIC CMP TXRTN GCB3 CLK168 VDDD VDDCP GNDD GNDD0 F1200 SYN VDDSYN NC 13 14 15 16 17 18 19 20 21 22 23 24 C0232 0.1uF VDDA DISC GNDA DACU DACR DACG VOX PLCAP SQIN UIO VDDDAC AGCCAP PLCAP2 R0226 1M C0225 0.1uF MICEXT GNDRC MICINT VDDRC TXSND AUXRX AUXTX AUDIO MOD URXOUT GCB5 GCB4 C0227 C0224 100pF DISCAUDIO C0237 2.2uF NU U0251 MC14053B VCC EN 12 X0 X 13 A C0254 2 X1 Y0 0.1uF Y 1 B Y1 5 C0255 Z0 0.1uF Z 3 C Z1 GND VEE 7 8 R0251 47K C0223 0.1uF FLAT_TX_RTN 145mV RMS @25kHz 72mV RMS @12.5kHz 5VD C0242 0.1uF C0265 0.1uF NU 5V_RF R0265 24K R0266 24K NU 9V3 6 VAG 15 10 4 9 C0267 .01uF RX_FLAT_FILTERED_AUDIO C0262 NU 82pF R0268 10K VAG 9 1 11 U0211-1 MC3403 8 VAG HANDSET_AUDIO 11 U0211-3 MC3403 10 C0271 .01uF C0272 0.1uF U0271 PA 7 C0273 3300pF VCC 9 INT_SWB+ 4 10K FLT_A+ R0269 470 4 3 9V3 R0261 R0267 47K 9V3 5VDC (0VDC during radio off) 630mV RX Filtered 330mV Flat 7 11 U0211-2 MC3403 100K 2 R0241 47K 4 5 5VDC RX Filtered Audio (0V DC Flat) 0.1uF 5VD DC_POWER_ON 100K C0252 1uF C0261 C0241 0.1uF C0245 0.1uF 5VD 6 14 11 C0266 0.1uF NU C0246 .01uF 5VD R0253 R0262 C0244 0.1uF C0235 .022uF C0234 0.1uF 36 35 34 33 32 31 30 29 28 27 26 25 NU 100pF NU R0223 30K GCB2 GCB1 GCB0 CHACT SQDET LSIO HSIO CSX CLK DATA GNDSYN LCAP FLAT_RX_SND R0222 24K R0224 8.2K NU C0253 1 24K R0224 8.2K TP0222 0.1uF 5V_RF 300mV RMS 0 VDC R0273 13VDC unmuted 24K 5VDC muted R0274 10K NU R0276 15K INV 4 OUT1 1 NINV 3 RR 6 8 M_SS OUT2 GND1 GND2 2 5 C0276 1000pF E0271 57R01 SPKR+ SPKR- C0277 1000pF E0272 57R01 Q0271 R0275 NOISE_BLNKR 10K C0274 0.1uF NU DATA CLK CSX GP2_OUT CH_ACT 7 8 9 F1200 5 4 6 3 SYN HSIO LSIO SQ_DET SPI(0:10) GPIO(0:13) CH_ACT VOX 11 7 C0275 47uF 1 2 CNTLR_AUDIO(0:7) ZWG0130231-A Figure 4-14. Controller Audio Schematic Diagram 4-21 PASUPVLTG VR0601 24V U0611 LM2941 C0601 470pF 4 C0603 10uF 5 VIN VOUT 1 2 ON_OFF ADJ GND1 GND2 3 6 EXT_SWB+ R0611 56K C0611 22uF C0612 0.1uF R0612 4.7K E0631 57R01 FLT_A+ D0621 R0621 5VDC 24K VSTBY C0621 470pF NU VR0621 5.6V C0622 47uF U0641 LM2941 4 C0641 470pF R0641 10K 5 VOUT 1 2 ON_OFF ADJ GND1 GND2 3 6 VIN 9V3 R0642 7.5K R0643 1.2K C0644 33uF C0645 0.1uF U0653 NU R0651 10 D0651 1 R0652 0V (13,8VDC when radio off) 10 C0651 NU 0.1uF C0652 33uF U0651 MC78M05 IN OUT GND 3 2 5VDC C0654 10uF 5VD C0655 0.1uF U0652 MC33064 RESET 1 2 INPUT 6 NC3 3 7 NC1 NC4 5 8 NC2 NC5 Q0641 GND J0601-1 J0601-2 J0601-3 RESET 5VDC (0VDC during reset) 4 Q0681 6VDC IN_5V_RF_REG R0671 18K C0681 0.1uF D0660 ON_OFF_CONTROL R0682 68K Q0661 INT_SWB+ D0661 DC_POWER_ON IGNITION_CONTROL R0661 1K C0662 .01uF C0661 47uF R0671 30K BATTERY_VOLTAGE R0662 150K R0672 10K Q0663 C0671 0.1uF VR0671 5.6V NU Q0662 EMERGENCY_CONTROL C0663 0.1uF ZWG0130232-A DWG NO Figure 4-15. Controller Supply Voltage Schematic Diagram 4-22 Table 4-3. Controller Parts List Circuit Ref C0101 C0107 C0112 C0121 C0122 C0131 C0132 C0141 C0151 C0201 C0204 C0212 C0221 C0222 C0223 C0224 C0225 C0226 C0227 C0231 C0232 C0234 C0235 C0236 C0241 C0243 C0244 C0245 C0246 C0252 C0254 C0255 C0261 C0262 C0265 C0267 C0271 C0272 C0273 C0275 C0276 C0277 C0421 C0422 C0423 C0426 C0427 C0428 C0429 Motorola Part No. 2113740F51 2113741F25 2113743E20 2113743E20 2113743E20 2113740F35 2113740F35 2113743E20 2113741F49 2311049A57 2113743E20 2311049A57 2113743E20 2113743E20 2113743E20 2113740F51 2113743E20 2113743E20 2113743E20 2113743B29 2113743E20 2113743E20 2113743E07 2113743E10 2113743E20 2113740F51 2113743E20 2113743E20 2113741F49 2311049A07 2113743E20 2113743E20 2113743E20 2113740F49 2113743E20 2113741F49 2113741F49 2113743E20 2113741F37 2311049A99 2113741F25 2113741F25 2113743N48 2113741F17 2113741F17 2113743L09 2113743L09 2113743N48 2113743L09 Circuit Ref Description 100pF 1nF 100nF 100nF 100nF 22pF 22pF 100nF 10nF 10uF 100nF 10uF 100nF 100nF 100nF 100pF 100nF 100nF 100nF 1UF 100nF 100nF 22nF 33nF 100nF 100pF 100nF 100nF 10nF 1uF 100nF 100nF 100nF 82pF 100nF 10nF 10nF 100nF 3.3nF 47uF 1nF 1nF 82.0pF 470pF 470pF 470pF 470pF 82pF 470pF C0430 C0431 C0445 C0446 C0447 C0448 C0449 C0470 C0471 C0472 C0473 C0474 C0476 C0477 C0478 C0482 C0483 C0484 C0485 C0486 C0487 C0488 C0490 C0491 C0492 C0493 C0494 C0495 C0496 C0497 C0499 C0501 C0502 C0503 C0504 C0505 C0506 C0508 C0509 C0510 C0511 C0512 C0513 C0514 C0515 C0516 C0517 C0518 C0541 C0542 C0591 Motorola Part No. 2113741F17 2113741F17 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113741F17 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113741F49 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113741F17 2113743L09 2113743L09 2113741F17 2113743L09 2113743L09 2113741F49 2113743N48 2113743L09 2311049A05 2311049A99 2113743E20 Description 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 10nF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 10nF 82pF 470pF 470nF 47uF 100nF Circuit Ref C0592 C0593 C0601 C0603 C0611 C0612 C0622 C0641 C0644 C0645 C0652 C0654 C0655 C0661 C0662 C0663 C0671 C0681 D0101 D0151 D0179 D0621 D0651 D0660 D0661 E0271 E0272 E0631 J0401 J0451 J0501 J0551 J0601 Q0110 Q0151 Q0171 Q0173 Q0177 Q0181 Q0183 Q0185 Q0271 Q0641 Q0661 Q0662 Q0663 Q0681 R0101 R0102 R0104 R0105 Motorola Part No. 2113743E20 2113743E20 2113741F17 2380090M24 2311049C06 2113743E20 2311049A99 2113741F17 2311049A97 2113743E20 2311049A97 2311049A57 2113743E20 2311049C05 2113741F49 2113743E20 2113743E20 2113743E20 4880236E05 4813833C02 4813833C02 4813833C02 4813833C02 4813833C02 4813833C02 2484657R01 2484657R01 2484657R01 0902636Y02 0902636Y01 0986105B01 0905505Y04 0986165B01 4880048M01 4880048M01 4880048M01 4880052M01 4880048M01 4880048M01 4880048M01 4880048M01 4813824A10 4880048M01 4805921T02 4813824A10 4880048M01 4880052M01 0662057A73 0662057A65 0662057A73 0662057A97 Description 100nF 100nF 470pF 10uF 22uF 100nF 47uF 470pF 33uF 100nF 33uF 10uF 100nF 47uF 10nF 100nF 100nF 100nF Diode, Schottky Diode, Dual Diode, Dual Diode, Dual Diode, Dual Diode, Dual Diode, Dual Ferrite Bead Ferrite Bead Ferrite Bead Connector, Flex, 12-pin Connector, Flex, Side Entry Connector, SMD, 20-Pin Connector, Zif, Horizontal DC Power Connector NPN NPN NPN NPN, Dalington NPN NPN NPN NPN NPN NPN Dual NPN NPN NPN, Dalington 10k 1/16W 5% 4k7 1/16W 5% 10K 100K Circuit Ref R0108 R0109 R0111 R0113 R0114 R0115 R0117 R0121 R0131 R0132 R0151 R0152 R0170 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0181 R0182 R0183 R0184 R0185 R0186 R0201 R0202 R0204 R0205 R0206 R0207 R0208 R0211 R0212 R0221 R0222 R0223 R0224 R0226 R0227 R0241 R0242 R0251 R0252 R0253 R0261 R0262 R0265 Motorola Part No. 0662057A57 0662057B47 0662057B47 0662057A73 0662057A73 0662057A73 0662057A63 0662057A97 0662057B46 0662057B10 0662057A82 0662057A82 0662057A73 0662057A65 0662057A73 0662057A65 0662057A73 0662057A73 0662057A84 0662057A65 0662057A89 0662057A89 0662057A65 0662057A89 0662057A65 0662057A89 0662057A65 0662057A89 0662057A25 0662057A43 0662057A43 0662057A73 0662057A73 0662057A57 0662057A57 0660076E70 0660076E70 0662057A82 0662057A82 0662057A84 0662057A71 0662057B22 0662057B22 0662057A89 0662057B47 0662057A89 0662057A91 0662057A97 0662057A73 0662057A97 0662057A82 Description 2K 0 0 10K 10K 10K 3K 100K 10M 330K 24K 24K 10K 4K 10K 4K 10K 10K 30K 4K 47K 47K 4K 47K 4K 47K 4K 47K 100 560 560 10K 10K 2K 2K 7.5K 7.5K 24K 24K 30K 8K 1M 1M 47K 0 47K 56K 100K 10K 100K 24K 4-23 Circuit Ref R0267 R0268 R0269 R0273 R0275 R0276 R0401 R0407 R0408 R0409 R0467 R0468 R0481 R0482 R0510 R0511 R0512 R0525 R0527 R0528 R0529 R0530 R0531 R0533 R0535 R0537 R0538 R0539 R0541 R0591 R0592 R0611 R0612 R0621 R0641 R0642 R0643 R0651 R0652 R0661 R0662 R0671 R0672 R0681 R0682 U0101 * U0111 * U0121 U0122 U0141 U0211 Motorola Part No. 0662057A89 0662057A73 0662057A41 0662057A82 0662057A73 0662057A77 0662057A33 0662057M26 0662057A25 0662057M26 0662057M26 0662057M26 0662057B47 0662057B47 0662057A65 0662057A97 0662057A77 0662057A97 0662057B47 0662057B47 0662057A89 0662057B47 0662057A43 0662057B47 0662057A49 0662057A33 0662057A33 0662057A65 0662057A83 0662057A82 0662057A01 0662057A91 0662057A65 0662057A82 0662057A73 0660076E70 0660076E51 0662057A01 0662057A01 0662057A49 0662057B02 0662057A84 0662057A73 0662057A79 0662057A93 5102226J56 5102463J64 5186137B01 5185963A21 5113805A30 5183222M49 Description 47K 10K 470 24K 10K 15K 220 10 100 10 10 10 0 0 4K 100K 15K 100K 0 0 47K 0 560 0 1K 220 220 4K 27K 24K 10 56K 4k 24K 10k 7.5K 1.2K 10 10 1K 150K 30K 10K 18K 68K Microprocessor EEPROM 512KX8 ROM 32KX8 SRAM Remux Quad Opamp Circuit Ref U0221 U0251 U0271 U0611 U0641 U0651 U0652 VR0151 VR0501 VR0503 VR0504 VR0505 VR0509 VR0510 VR0537 VR0541 VR0601 VR0621 Y0131 Motorola Part No. 5185963A53 5113806A20 5109699X01 5183308X01 5183308X01 5113816A07 5113815A02 4813830A15 4805656W09 4805656W09 4813830A40 4805656W09 4813830A40 4813830A40 4813830A15 4813830A27 4813832C77 4813830A15 4880113R19 Description ASFIC Mux/Demux Audio Power Amplifier Adjustable Voltage Regulator Adjustable Voltage Regulator Regulator, +5V Under Voltage Sensor Diode, 5.6V Zener Quad Zener Quad Auto Shutdown Diode Zener Quad Auto Shutdown Auto Shutdown Diode, 5.6V Diode, 14V Transient Supressor Diode, 5.6V Crystal 38.4KHz * Motorola Depot Servicing only Reference designators with an asterisk indicate components which are not field replaceable because they need to be calibrated with specialized factory equipment after installation. Radios in which these parts have been replaced in the field will be off-frequency at temperature extremes. 4-24 This page intentionally left blank 4-25 Q4333 VCOBIAS_2_UHF_VCO R4346 1 0 VDC (Tx) 2.43 VDC (Rx) VCOBIAS_2 10K VSF VSF_UHF_VC0 R4301 RXSW 0 VDC (Tx) 4.7 VDC (Rx) 5V C4375 0.1uF 5V 4.58 VDC VSF 6 2 3 4 R4341 5V_UHF_VCO 5.6K 0 C4308 L4305 390nH 0.1uF C4371 0.22uF R4302 10K L4304 390nH C4361 100pF Q4301 P2 R4303 C4307 30 3 P3 1 2 3 4 5 6 16 15 20 119 1.91 VDC (Tx) 0 VDC (Rx) 100pF TX_IADJ RX_IADJ SUPER_FLTR COLL_RFIN RX_BASE RX_EMITTER TX_BASE TX_EMITTER FLIP_IN TRB_IN R4304 L4302 390nH CR4303 CR4302 TXSW CR4301 180 C4318 0.22uF C4381 0.1uF R4312 5.6K Vac C4314 1.5pF VCTRL_UHF_VCO 2.5 - 11 VDC C4312 L4311 R4315 0 C4316 0.1uF 390nH C4311 100pF 68nH C4363 R4314 270 C4315 100pF R4332 Vac Vac L4332 Vac C4333 Vac C4335 Vac R4339 51pF 13.5 to 16 dBm RXINJ_UHF_VCO RXINJ R4345 C4339 Q4332 C4331 6.8pF R4331 100pF Vac Vac R4343 1K Q4331 22 Vac R4338 Vac C4373 Vac R4344 10 R4347 C4374 U4301 L4333 390nH C4337 R4336 Vac Vac C4338 51pF 0 R4340 Vac 50U54 R4333 R4334 Vac Vac TXSW 4.54 VDC (Tx) 0 VDC (Rx) PRESC_UHF_VCO PRESC Vac R4335 Vac C4334 Vac SH4301 SHIELD 4.42 VDC (Rx) 0 VDC (Tx) RXSW C4382 Vac VCTRL 4.54 VDC 12 (Rx) 7 RX_SWITCH 13 TX_SWITCH TXINJ_UHF_VCO TXINJ L4371 4 to 6 dBm 0 VDC (Rx) 4.97 VDC (Tx) 390nH C4317 PRESC_OUT 2.35 VDC 10 (Tx) 8 TRB_UHF_VCO TRB L4313 C4301 100pF TX_OUT RX_OUT R4342 2.2K C4332 L4361 390nH Vac -18 to -16 dBm (Rx) -16 to -11 dBm (Tx) R4311 7.5K L4301 390nH C4362 VCC_BUFFERS VCC_LOGIC 4.54 VDC 0 VDC (Tx) 2.45 VDC (Rx) 2 C4336 .022uF R4337 14 18 C4306 2pF C4304 3.9pF C4303 8.2pF R4361 180 L4331 33nH 10 1 P1 L4303 RESONATOR C4302 8.2pF C4353 0.1uF R4305 100pF C4305 Vac C4354 2.2uF C4351 100pF Vac C4309 Vac C4352 0.1uF 9 GND_FLAG 11 GND_BUFFERS 17 GND_LOGIC C4372 C4355 2.2uF C4383 SH4302 SHIELD GND Vac P1 1 RESONATOR 12pF CR4311 L4312 C4313 Vac R4313 30 2 P2 3 P3 C4321 1pF 2.6 VDC (Tx) VCOMOD_UHF_VCO C4325 3.1 VDC (Rx) R4321 R4322 56K 10K 4.58 VDC ZWG0130272 VSF VCOMOD 4.7uF C4323 C4322 Vac Vac CR4321 C4324 2.4pF R4323 100K GROUND Figure 4-16. UHF (403-470MHz) Voltage Controlled Oscillator Schematic Diagram 4-26 C4212 .018uF U4211 LP2951 5V_UHF_FN_1 5V_UHF_FN_2 4.97 VDC 5V 1 OUTPUT 5 ERROR 2 SENSE 6 5V_TAP 6.68 VDC C4216 C4213 2.2uF 10.87 VDC L4201 390nH C4203 IN_5V_RF_REG_UHF_FN_1 8 INPUT 7 FEEDBACK 3 SHUTDOWN IN_5V_RF_REG C4211 0.1uF C4215 2.2uF GND 4 12.7 VDC .01uF D4201 C4202 .01uF 3 2 1 4 A3 5 A2 6 A1 K3 K2 K1 R4201 VDDA_UHF_FN_1 R4211 150 VDDA 0 C4204 R4206 100pF C4214 2.2uF C4210 2.2uF 33K C4208 C4205 .01uF C4287 100pF C4206 10uF U4507 0.1uF VCTRL 150 R4222 510 C4221 .01uF LOCK_UHF_FN_1 LOCK 5 VDC (Locked) TP4201 C4222 0.1uF R4203 47 VCOBIAS_2 C4209 0.1uF R4221 2.5 to 11 VDC R4204 47 C4246 100pF R4228 47K 25 16 28 46 4 45 43 WARP INDMULT SFOUT ADAPTSW LOCK IADAPT IOUT U4201 38 TEST2 37 TEST1 1 0 VDC (Unlocked) R4223 68 C4223 C4224 1uF C4225 4.97 VDC (25KHZ Chan. Spacing) 0 VDC (12.5KHZ Chan. Spacing) BWSELECT_UHF_FN_1 3 AUX4 2 AUX3 1 AUX2 48 AUX1 510pF BWSELECT VCOMOD_UHF_FN_1 VCOMOD 16_8MHz_UHF_FN_1 TRB_UHF_FN_1 TRB R4241 220 C4288 C4241 1.28 VDC 3.48 VDC 0 VDC (RX) 4.97 VDC (TX) 24 XTAL2 23 XTAL1 C4227 U4506 PRESC 3.79 VDC 100pF C4226 C4230 PREIN 2.2uF 32 SFBASE 27 SFCAP 26 1.76 VDC (Tx) R4252 BIAS2 30K 39 BIAS1 40 R4251 39K VBPASS 21 C4255 PVREF 1.78 VDC (Rx) 35 100pF 63A27 SFIN 30 DATA 7 MODIN 10 41 MODOUT 19 FREFOUT 16_8MHz 3.43 VDC TP4202 -18 to -16 dBm (Rx) -16 to -11 dBm (Tx) CCOMP 42 REFSEL 18 11 VMULT4 12 VMULT3 14 VMULT2 15 VMULT1 2.48 VDC 2.48 VDC 3.05 VDC (RX) 2.63 VDC (TX) 1 NC3 31 NC2 29 NC1 17 VSF_UHF_FN_1 4.58 VDC C4253 4.7uF C4252 1000pF DATA 4.97 VDC MODIN_UHF_FN_1 2.52 VDC CEX 9 CLK 8 MODIN CSX_UHF_FN_1 CSX 0 VDC C4244 100pF VSF C4254 0.1uF DATA_UHF_FN_1 4.97 VDC VCP 47 VRO 13 DVDD 36 AVDD 20 PRE_VDD 34 PD_VDD 5 VCTRL_UHF_FN_1 C4228 0.1uF PD_GND 44 PRE_GND 33 AGND 22 DGND 6 C4207 Vac CLK_UHF_FN_1 C4242 100pF CLK C4243 100pF R4261 150K L4231 2 C4289 0.1uF C4231 .01uF 1 C4235 R4263 C4262 220pF 2.2uH C4234 .01uF D4261 Y4262 16.8MHz R4262 C4233 2.2uF C4263 1.5pF 16.8MHz C4261 62pF C4232 .01uF TTS05V 1 VCNTL VCC 2 4 GND OUT 3 Figure 4-17. UHF (403-470MHz) Fractal-N Schematic Diagram C4251 ZWG0130270 4-27 PASUPVLTG L4402 PASUPVLTG A+ C4489 C4495 1000pF C4421 .033uF C4490 Vac R4633 C4478 1000pF C4493 L4541 57R01 L4421 57R01 Vac Vac 9V3 Vac 9V3_UHF_PA_1 L4436 57R01 L4474 9V3 C4423 1uF L4403 C4404 L4401 11.03nH L4543 13.85nH C4487 30pF C4412 100pF C4409 0.1uF 4.7 R4601 Load C4424 Vac R4405 Q4421 15 R4401 300 C4461 C4447 4.7 30pF C4453 7 G1 8 G2 9 G3 10 G4 C4432 30pF Vac C4419 36pF 1 L4441 13.85nH Vac R4421 10 R4486 120 R4631 1K Vac R4496 10K 82 R4511 51 VR4471 5.6V L4473 43.67nH C4473 100pF C4472 36pF C4510 36pF C4426 100pF R4408 C4457 R4512 Vac Q4471 C4456 C4446 100pF Vac Vac C4630 0.1uF R4632 24K R4630 Vac C4476 R4411 PCIC_MOSBIAS_1 R4475 0 R4504 10K BIAS_2_UHF_PA_1 R4455 Vac C4451 CLK_VHF_PA_1 K9V1_UHF_PA_1 CLK DATA_VHF_PA_1R4492 9V3 K9V1 DATA CSX Vac 10K CSX_VHF_PA_1 TEMPSENSE_UHF_PA R4431 TEMPSENSE R4422 Vac 9V3 PA_PWR_SET_1_UHF_PA_1 620 R4423 PA_PWR_SET 9V3 U4502 2 VOUT R4501 R4502 200K 3 Q4473 6.5 VDC (44W) 6.2 VDC (28W) 9V3 0.75 VDC TP4532 5.6K GND 620 R4424 620 PA_PWR_SET LM50 C4479 100pF 9V3 9.2 VDC TP4530 TP4531 3.11 VDC (44W) 2.2 VDC (28W) MOSBIAS_2 10K Q4472 470 C4520 Vac Vac TP4537 2.4 to 2.6 VDC 3.3K R4513 R4507 10K PCIC_MOSBIAS_1 CNTLVLTG_UHF_PA_1R4514 C4499 100pF A+ C4475 2pF C4480 R4472 Vac R4476 R4480 CNTLVLTG 12pF Vac C4470 R4491 11K RXIN 17nH 10K C4507 100pF C4496 5.6pF RX_IN_VHF_PA_1 C4474 L4472 100K Vac Vac Vac 4.5 VDC (44W) 4.4 VDC (28W) TP4533 VR4473 5.6V R4506 Vac R4481 R4488 3K R4428 4.7K 17nH C4448 12pF D4472 C4464 Vac R4607 R4485 120 Vac TP4536 3.7 to 3.9 VDC C4425 .022uF 17nH C4494 10pF Vac D4403 Q4451 17nH C4498 6.8pF C4463 D4452 C4452 Vac D4453 R4416 100 R4487 100K C4414 1000pF C4469 100pF R4457 120 D4451 R4473 4.3K C4437 Vac D4402 R4412 5.6K C4459 100pF Vac 100K R4459 Vac C4491 10pF C4442 39pF L4492 L4491 L4493 100pF C4465 C4455 R4415 100 R4427 C4492 Vac Vac R4409 L4440 57R01 Vac Load C4416 .022uF C4444 C4466 9V3 C4420 43pF C4434 39pF C4450 C4449 33pF 16pF C4443 6.8pF R4474 R4403 300 10K C4460 39pF Vac 2 Vac 100pF 4 GND1 5 GND2 12 GND3 13 GND4 R4402 C4417 6 7 2 3 1 3 4 5 7 8 16 RFIN RFOUT1 1 VCNTRL RFOUT2 14 VD1 VG1 11 G2 U4401 VG2 09Z67 8 NC1 9 NC2 10 NC3 15 NC4 3 G 6 Vac C4401 100pF 4 Q4431 MRF5015 D R4414 Vac C4441 30pF 24 VAR3 23 RX 22 NA 21 RS 20 VAR1 19 VLIM 18 VAR2 17 V5EXT C4462 Vac Q4441 MRF650 2 C4435 27pF 4.7 R4602 C4431 200 4 to 6 dBm C4410 100pF 1 J4401-1 2 J4401-2 3 J4401-3 D4471 C4483 100pF R4600 C4407 0.1uF R4433 R4471 100pF L4411 390nH TX_INJ_UHF_PA_1 L4437 17nH Vac C4403 3.9pF TXINJ C4439 100pF C4422 100pF R4495 51 S1 S2 S3 S4 C4488 100pF R4497 51 390nH C4486 30pF C4418 0.1uF C4438 0.1uF C4482 30pF Vac Vac VR4472 5.6V ALT 9V3 C4436 10uF C4497 1000pF RESET_VHF_PA_1 RESET FE_CNTL_1_VHF_PA_1 FECTRL_1 FE_CNTL_2_VHF_PA_1 FECTRL_2 C4484 30pF C4522 1000pF R4425 R4482 200K GND2 25 CLK 26 BPOS 27 DATA 28 CEX 29 TEMP 30 RSET 31 ANO 32 U4501 H99S-4 1 RFIN 2 T1 3 CI 4 INT 5 CJ 6 VL 7 CL 8 GND1 57R01 C4632 C4481 3000pF 1 C4602 .033uF POS PASUPVLTG_UHF_PA_1 C4485 30pF V45 16 VG 15 V10 14 CQX 13 CQ 12 Q 11 QX 10 F168 9 C4505 1uF C4506 2200pF R4484 68K C4521 R4503 100pF 3.9K C4502 .015uF 3.1 VDC (44W) 2.2 VDC (28W) PA_PWR_SET C4504 .02uF R4483 100K C4503 2200pF R4523 ALT Vac 620 ZWG0130271 Figure 4-18. UHF (403-470MHz) Power Amplifier Schematic Diagram 4-28 Table 4-4. UHF B1 Radio Parts List Circuit Ref C0101 C0107 C0112 C0121 C0122 C0131 C0132 C0141 C0151 C0201 C0204 C0212 C0221 C0222 C0223 C0224 C0225 C0226 C0227 C0231 C0232 C0234 C0235 C0236 C0241 C0243 C0244 C0245 C0246 C0252 C0254 C0255 C0261 C0262 C0265 C0267 C0271 C0272 C0273 C0275 C0276 C0277 C0421 C0422 C0423 C0426 C0427 C0428 Circuit Ref Motorola Part No. 2113740F51 2113741F25 2113743E20 2113743E20 2113743E20 2113740F35 2113740F35 2113743E20 2113741F49 2311049A57 2113743E20 2311049A57 2113743E20 2113743E20 2113743E20 2113740F51 2113743E20 2113743E20 2113743E20 2113743B29 2113743E20 2113743E20 2113743E07 2113743E10 2113743E20 2113740F51 2113743E20 2113743E20 2113741F49 2311049A07 2113743E20 2113743E20 2113743E20 2113740F49 2113743E20 2113741F49 2113741F49 2113743E20 2113741F37 2311049A99 2113741F25 2113741F25 2113743N48 2113741F17 2113741F17 2113743L09 2113743L09 2113743N48 Description 100pF 1nF 100nF 100nF 100nF 22pF 22pF 100nF 10nF 10uF 100nF 10uF 100nF 100nF 100nF 100pF 100nF 100nF 100nF 1uF 100nF 100nF 22nF 33nF 100nF 100pF 100nF 100nF 10nF 1uF 100nF 100nF 100nF 82pF 100nF 10nF 10nF 100nF 3.3nF 47uF 1nF 1nF 82.0pF 470pF 470pF 470pF 470pF 82.0pF C0429 C0430 C0431 C0445 C0446 C0447 C0448 C0449 C0470 C0471 C0472 C0473 C0474 C0476 C0477 C0478 C0482 C0483 C0484 C0485 C0486 C0487 C0488 C0490 C0491 C0492 C0493 C0494 C0495 C0496 C0497 C0499 C0501 C0502 C0503 C0504 C0505 C0506 C0508 C0509 C0510 C0511 C0512 C0513 C0514 C0515 C0516 C0517 C0518 C0541 Motorola Part No. 2113743L09 2113741F17 2113741F17 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113741F17 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113741F49 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113743L09 2113741F17 2113743L09 2113743L09 2113741F17 2113743L09 2113743L09 2113741F49 2113743N48 2113743L09 2311049A05 Description 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 10nF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470 PF 470 PF 470pF 470 PF 470pF 10nF 82pF 470pF 470nF Circuit Ref C0542 C0591 C0592 C0593 C0601 C0603 C0611 C0612 C0622 C0641 C0644 C0645 C0652 C0654 C0655 C0661 C0662 C0663 C0671 C0681 C3100 C3102 C3103 C3104 C3110 C3111 C3112 C3114 C3115 C3116 C3121 C3122 C3123 C3132 C3133 C3134 C3135 C3136 C3137 C3138 C3139 C3140 C3141 C3142 C3143 C3144 C3145 C3146 C3147 C3151 Motorola Part No. 2311049A99 2113743E20 2113743E20 2113743E20 2113741F17 2380090M24 2311049C06 2113743E20 2311049A99 2113741F17 2311049A97 2113743E20 2311049A97 2311049A57 2113743E20 2311049C05 2113741F49 2113743E20 2113743E20 2113743E20 2113741F25 2113740F31 2113740F39 2113743E20 2113740F37 2113743E20 2113740F49 2113740F33 2113740F35 2113743E20 2113743E20 2113743E11 2113743E11 2113743E20 2311049A57 2113743E20 2113740L30 2113740L29 2113743E11 2311049A40 2113743E20 2113743E20 2113743E20 2113743E20 2113740F53 2113743E20 2113743E20 2113741F41 2113743E20 2113741F49 Description 47uF 100nF 100nF 100nF 470pF 10uF 22uF 100nF 47uF 470pF 33 UF 100nF 33 UF 10uF 100nF 47uF 10nF 100nF 100nF 100nF 1nF 15pF 33pF 100nF 27pF 100nF 82pF 18pF 22pF 100nF 100nF 39nF 39nF 100nF 10uF 100nF 33pF 30pF 39nF 2.2uF 100nF 100nF 100nF 100nF 120pF 100nF 100nF 4.7nF 100nF 10nF Circuit Ref C3152 C3155 C4001 C4002 C4003 C4004 C4005 C4006 C4007 C4008 C4009 C4010 C4011 C4012 C4013 C4014 C4015 C4017 C4018 C4019 C4020 C4021 C4021 C4022 C4023 C4024 C4025 C4026 C4027 C4029 C4030 C4031 C4051 C4052 C4053 C4054 C4202 C4203 C4204 C4205 C4206 C4208 C4209 C4210 C4211 C4212 C4213 C4214 C4215 C4221 Motorola Part No. 2113741F49 2113741F49 2113740F09 2113740F39 2113740F41 2113740F42 2113740F42 2113740F42 2113740F41 2113741F25 2113740F51 2113741F13 2113741F37 2113741F13 2113741F37 2113740F51 2113740F51 2113740F09 2113740F29 2113740F35 2113740F40 2113740F40 2113740F51 2113740F40 2113740F35 2113741F25 2113740F11 2113740F09 2113740F09 2113740F09 2113740F09 2113740F30 2113740F27 2113740F49 2113740F32 2113740F32 2113741F49 2113741F49 2113740F51 2113741F49 2311049J25 2113743E20 2113743E20 2104993J02 2113743E20 2113743E05 2311049A09 2311049A09 2311049A09 2109720D01 Description 10nF 10nF 1.8pF 33pF 39pF 43pF 43pF 43pF 39pF 1nF 100pF 330pF 3.3nF 330pF 3.3nF 100pF 100pF 1.8pF 12pF 22pF 36pF 36pF 100pF 36pF 22pF 1nF 2.2pF 1.8pF 1.8pF 1.8pF 1.8pF 13pF 10pF 82pF 16pF 16pF 10 nF 10 nF 100pF 10nF 10uF 100nF 100nF 2.2uF 100nF 1.8nF 2.2uF 2.2uF 2.2uF 100nF 4-29 Circuit Ref C4222 C4224 C4225 C4227 C4228 C4230 C4231 C4232 C4233 C4234 C4242 C4243 C4244 C4245 C4246 C4252 C4253 C4254 C4255 C4261 C4262 C4263 C4287 C4289 C4301 C4302 C4303 C4304 C4305 C4306 C4307 C4308 C4309 C4311 C4312 C4313 C4314 C4315 C4316 C4317 C4318 C4321 C4322 C4323 C4324 C4325 C4331 C4332 C4333 C4334 Motorola Part No. 2109720D14 0882422W23 2113741F18 2113740F51 2113743E20 2104993J02 2113741F49 2113741F49 2104993J02 2113741F49 2113740F51 2113740F51 2113740F51 2113740F51 2113740F51 2113741F25 2311049A56 2113743E20 2113740F51 2113740L37 2113740F59 2113740F07 2113740F51 2113743E20 2113740F51 2113740L16 2113740L16 2113740L08 2113740F03 2113740L01 2113740F51 2113743E20 2113740F51 2113740F51 2113740F29 2113740F03 2113740F07 2113740F51 2109720D14 2113740F51 2113743K16 2113740F03 2113740F51 2113741F25 2113740L05 2311049A56 2113740L14 2113743E20 2113740F44 2113740F44 Description 100nF 1.0uF 510pF 100pF 100nF 2.2uF 10nF 10nF 2.2uF 10nF 100pF 100pF 100pF 100pF 100pF 1nF 4.7uF 100nF 100pF 62pF 220pF 1.5pF 100pF 100nF 100pF 8.2pF 8.2pF 3.9pF 1pF 2pF 100pF 100nF 100pF 100pF 12pF 1pF 1.5pF 100pF 100nF 100pF 220nF 1pF 100pF 1.0nF 3pF 4.7uF 6.8pF 100nF 51pF 51pF Circuit Ref C4335 C4336 C4337 C4338 C4339 C4351 C4352 C4353 C4354 C4355 C4361 C4362 C4363 C4371 C4372 C4373 C4374 C4375 C4381 C4382 C4383 C4401 C4403 C4404 C4407 C4409 C4410 C4412 C4414 C4416 C4417 C4418 C4419 C4421 C4422 C4423 C4425 C4426 C4431 C4432 C4435 C4436 C4438 C4439 C4441 C4442 C4443 C4446 C4448 C4449 Motorola Part No. 2113740F51 2113743E07 2113740F44 2113740F44 2113740F03 2113740F51 2113743E20 2113743E20 2104993J02 2104993J02 2113740F51 2113743K16 2113740F03 2113743K16 2113740F51 2113740F03 2113740F03 2113743E20 2113743E20 2113740F51 2113740F51 2113740F51 2113740F17 2113740F51 2113743E20 2113743E20 2113740F51 2113740F51 2113741F25 2113743E07 2113740F51 2113743E20 2113740F40 2113741A57 2113740A55 2311049A08 2113743E07 2113740F51 2113740A40 2111078B27 2111078B25 2311049A45 2113743E20 2111078B42 2180464E40 2180464E34 2111078B09 2113740F51 2180464E65 2111078B23 Description 100pF 22nF 51pF 51pF 1pF 100pF 100nF 100nF 2.2uF 2.2uF 100pF 220nF 1pF 220nF 100pF 1pF 1pF 100nF 100nF 100pF 100pF 100pF 3.9pF 100pF 100nF 100nF 100pF 100pF 1nF 22nF 100pF 100nF 36pF 33nF 100pF 1uF 22nF 100pF 30pF 30pF 27pF 10uF 100nF 100pF 30pF 39pF 6.8pF 100pF 12pF 24pF Circuit Ref Motorola Part No. C4450 C4459 C4460 C4472 C4473 C4474 C4475 C4479 C4482 C4483 C4484 C4485 C4486 C4487 C4488 C4491 C4492 C4494 C4496 C4498 C4499 C4502 C4503 C4504 C4505 C4506 C4507 C4510 C4521 C4602 C4630 C4632 CR4301 CR4302 CR4303 CR4311 CR4321 D0101 D0151 D0179 D0621 D0651 D0660 D0661 D3101 D4001 D4002 D4003 D4004 D4005 2111078B19 2113740A55 2111078B32 2111078B31 2113740F51 2113740F23 2113740F10 2113740F51 2113740F38 2113740A55 2113740F38 2113740F38 2113740F38 2113740F38 2113740F51 2111078B13 2111078B42 2180464E63 2111078B07 2111078B09 2113740F51 2113743E03 2113741F33 2113743E06 2311049A07 2113741F33 2113740F51 2111078B31 2113740F51 2113741A57 2113743E20 2113741F25 4805649Q13 4862824C01 4862824C01 4802245J22 4862824C01 4880236E05 4813833C02 4813833C02 4813833C02 4813833C02 4813833C02 4813833C02 4880154K03 4862824C01 4862824C01 4880154K03 4862824C01 4862824C01 Description 16pF 100pF 39pF 36pF 100pF 6.8pF 2.0pF 100pF 30pF 100pF 30pF 30pF 30pF 30pF 100pF 10pF 100pF 10pF 5.6pF 6.8pF 100 pF 15nF 2.2nF 22nF 1uF 2.2nF 100pF 36pF 100pF 33nF 100nF 1.0nF Diode, Varactor Diode, Varactor Diode, Varactor Diode, Varactor Diode, Varactor Diode Schottky Diode Dual Diode Dual Diode Dual Diode Dual Diode Dual Diode Dual Diode Schottky Diode, Varactor Diode, Varactor Dual Schottky Diode, Varactor Diode, Varactor Circuit Ref Motorola Part No. D4051 D4201 D4261 D4451 D4452 D4453 D4471 D4472 E0271 E0272 E0631 FL3101 4886143B01 4802233J09 4802245J22 4880236E05 4880236E05 4880236E05 4802482J02 4802482J02 2484657R01 2484657R01 2484657R01 9180112R16 FL3102 9180112R16 FL3111 FL3112 FL3114 FL3115 J0401 J0451 9180469V04 9180469V06 9180468V06 9180469V03 0902636Y02 0902636Y01 J0501 J0551 J0601 J4401 L3101 L3111 L3112 L4003 L4008 L4051 L4053 L4054 L4201 L4221 L4225 L4231 L4301 L4302 L4303 L4304 L4305 L4311 L4312 L4313 L4331 L4332 L4333 L4361 0986105B01 0905505Y04 0986165B01 0986166B02 2462587T25 2462587T25 2462587T25 2462587T23 2462587T23 2462587T17 2462587X46 2462587X43 2462587Q42 2462587P25 2462587T40 2462587Q20 2462587T22 2462587T22 2460593C01 2462587T22 2462587T22 2462587T22 2460593C01 2462587T22 2462587T09 2462587T36 2462587T22 2462587T22 Description Diode Mixer Diode Tripple Diode, Varactor Diode Schottky Diode Schottky Diode Schottky Diode Diode Ferrite Bead Ferrite Bead Ferrite Bead 2-Pole Crystal Filter, 44.85MHz 2-Pole Crystal Filter, 44.85MHz Filter, 455kHz Filter, 455kHz Filter, 455kHz Filter, 455kHz 12-Pin Flexible Connector Flexible Connector, Side Entry 20-Pin Connector Connector, Zif Horizontal DC Power Connector Mini-UHF RF Connector 620nH 620nH 620nH 470nH 470nH 150nH 27nH 15nH 390nH 12uH 33nH 2.2uH 390nH 390nH Teflon Resonator 390nH 390nH 390nH Teflon Resonator 390nH 33nH 15nH 390nH 390nH 4-30 Circuit Ref L4371 L4401 L4402 L4403 L4411 L4421 L4436 L4437 L4440 L4441 L4472 L4473 L4491 L4492 L4493 L4543 Q0110 Q0151 Q0171 Q0173 Q0177 Q0181 Q0183 Q0185 Q0271 Q0641 Q0661 Q0662 Q0663 Q0681 Q3101 Q3102 Q3151 Q3152 Q4003 Q4301 Q4331 Q4332 Q4333 Q4421 Q4431 Q4441 Q4471 Q4472 Q4473 R0101 R0102 R0104 R0105 R0108 Motorola Part No. 2462587T13 2460591B04 2484657R01 2462587T22 2462587T22 2484657R01 2484657R01 2460592A01 2484657R01 2460591C23 2460592A01 2460591N36 2460592A01 2460592A01 2460592A01 2460591C23 4880048M01 4880048M01 4880048M01 4880052M01 4880048M01 4880048M01 4880048M01 4880048M01 4813824A10 4880048M01 4805921T02 4813824A10 4880048M01 4880052M01 4813827A07 4813827A07 4880048M01 4880048M01 4813827A07 4805218N63 4813827A07 4813827A07 4802245J50 5105385Y91 4805537W01 4880225C30 4880048M01 4805128M27 4813824A10 0662057A73 0662057A65 0662057A73 0662057A97 0662057A57 Description 68nH Airwound Coil, 4-turns Ferrite Bead 390nH 390nH Ferrite Bead Ferrite Bead Airwound Coil, 3-turns Ferrite Bead Airwound Coil, 5-turns Airwound Coil, 3-turns Airwound Coil, 5-turns Airwound Coil, 3-turns Airwound Coil, 3-turns Airwound Coil, 3-turns Airwound Coil, 5-turns NPN NPN NPN NPN Darlington NPN NPN NPN NPN NPN NPN DUAL NPN NPN NPN Darlington NPN NPN NPN DIG NPN DIG NPN Diode Dual Schottky NPN NPN NPN LDMOS Power Amplifier Bipolar Power Amplifier Bipolar Power Amplifier NPN PNP MMBT3904 10K 4K 10K 100K 2K Circuit Ref R0109 R0111 R0113 R0114 R0115 R0117 R0121 R0131 R0132 R0151 R0152 R0170 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0181 R0182 R0183 R0184 R0185 R0186 R0201 R0202 R0204 R0205 R0206 R0207 R0208 R0211 R0212 R0221 R0222 R0223 R0224 R0226 R0227 R0241 R0242 R0251 R0252 R0253 R0261 R0262 R0265 Motorola Part No. 0662057B47 0662057B47 0662057A73 0662057A73 0662057A73 0662057A63 0662057A97 0662057B46 0662057B10 0662057A82 0662057A82 0662057A73 0662057A65 0662057A73 0662057A65 0662057A73 0662057A73 0662057A84 0662057A65 0662057A89 0662057A89 0662057A65 0662057A89 0662057A65 0662057A89 0662057A65 0662057A89 0662057A25 0662057A43 0662057A43 0662057A73 0662057A73 0662057A57 0662057A57 0660076E70 0660076E70 0662057A82 0662057A82 0662057A84 0662057A71 0662057B22 0662057B22 0662057A89 0662057B47 0662057A89 0662057A91 0662057A97 0662057A73 0662057A97 0662057A82 Description 0 0 10K 10K 10K 3k9 100K 10M 330k 24K 24K 10K 4K 10k 4K 10K 10K 30K 4K 47K 47K 4k 47K 4k 47K 4k 47K 100 560 560 10K 10K 2K 2K 7.5K 7.5K 24K 24K 30K 8K 1M 1M 47K 0 47K 56K 100K 10K 100K 24K Circuit Ref R0267 R0268 R0269 R0273 R0275 R0276 R0401 R0407 R0408 R0409 R0467 R0468 R0481 R0482 R0510 R0511 R0512 R0525 R0527 R0528 R0529 R0530 R0531 R0533 R0535 R0537 R0538 R0539 R0541 R0591 R0592 R0611 R0612 R0621 R0641 R0642 R0643 R0651 R0652 R0661 R0662 R0671 R0672 R0681 R0682 R3101 R3102 R3105 R3106 R3107 Motorola Part No. 0662057A89 0662057A73 0662057A41 0662057A82 0662057A73 0662057A77 0662057A33 0662057M26 0662057A25 0662057M26 0662057M26 0662057M26 0662057B47 0662057B47 0662057A65 0662057A97 0662057A77 0662057A97 0662057B47 0662057B47 0662057A89 0662057B47 0662057A43 0662057B47 0662057A49 0662057A33 0662057A33 0662057A65 0662057A83 0662057A82 0662057A01 0662057A91 0662057A65 0662057A82 0662057A73 0660076E70 0660076E51 0662057A01 0662057A01 0662057A49 0662057B02 0662057A84 0662057A73 0662057A79 0662057A93 0662057A75 0662057A01 0662057A25 0662057A83 0662057A69 Description 47K 10K 470 24K 10K 15K 220 10 100 10 10 10 0 0 4K 100K 15K 100K 0 0 47K 0 560 0 1K 220 220 4K 27K 24K 10 56K 4K 24K 10K 7.5K 1.2K 10 10 1K 150K 30K 10K 18K 68K 12K 10 100 27K 6.8K Circuit Ref R3108 R3111 R3112 R3115 R3116 R3117 R3118 R3130 R3132 R3133 R3134 R3135 R3144 R3145 R3146 R3147 R3151 R3152 R3153 R3154 R4001 R4002 R4003 R4004 R4005 R4006 R4007 R4008 R4009 R4010 R4011 R4012 R4013 R4014 R4022 R4051 R4052 R4060 R4201 R4203 R4204 R4206 R4211 R4221 R4222 R4223 R4228 R4241 R4251 R4252 Motorola Part No. 0662057A44 0662057A75 0662057A01 0662057A39 0662057A37 0662057A83 0662057A69 0662057A18 0662057A77 0662057A71 0662057A73 0662057A51 0662057A58 0662057A61 0662057A45 0662057A75 0662057A73 0662057A73 0662057A73 0662057A73 0662057A97 0662057A37 0662057A63 0662057A59 0662057A73 0662057A35 0662057A21 0662057A13 0662057A29 0662057A29 0662057A35 0662057A97 0662057A35 0662057A01 0662057B47 0662057A18 0662057B47 0662057B10 0662057A29 0662057A17 0662057A17 0662057A85 0662057B47 0662057A29 0662057A42 0662057A21 0662057A89 0662057A33 0662057A87 0662057A84 Description 620 12K 10 390 330 27K 6.8K 51 15K 8.2K 10K 1.2K 2.4K 3.3K 680 12K 10K 10K 10K 10K 100K 330 3.9K 2.7K 10K 270 68 33 150 150 270 100K 270 10 0 51 0 330K 150 47 47 33K 0 150 510 68 47K 220 39K 30K 4-31 Circuit Ref R4261 R4301 R4302 R4303 R4304 R4305 R4311 R4312 R4313 R4314 R4315 R4321 R4322 R4323 R4331 R4332 R4333 R4334 R4335 R4336 R4337 R4338 R4339 R4340 R4341 R4342 R4343 R4344 R4345 R4346 R4347 R4361 R4401 R4402 R4403 R4405 R4409 R4412 R4415 R4416 R4421 R4422 R4423 R4424 R4425 R4427 R4428 R4457 R4473 R4474 Motorola Part No. 0662057B02 0662057A67 0662057A73 0662057A12 0662057A31 0662057A01 0662057A70 0662057A67 0662057A12 0662057A35 0662057B47 0662057A91 0662057A73 0662057A73 0662057A09 0662057A81 0662057A73 0662057B47 0662057A01 0662057A49 0662057B47 0662057A33 0662057A09 0662057A33 0662057B47 0662057A57 0662057A49 0662057A01 0662057B47 0662057A73 0662057B47 0662057A31 0662057A36 0662057A05 0662057A36 0662057A32 0662057A97 0662057A67 0662057A25 0662057A25 0680194M01 0611079A69 0611079A69 0611079A69 0611079A69 0662057A73 0662057A65 0683962T51 0662057A64 0662057A97 Description 150K 5.6K 10K 30 180 10 7.5K 5.6K 30 270 0 56K 10K 10K 22 22K 10K 0 10 1K 0 220 22 220 0 2.2K 1K 10 0 10K 0 180 300 15 300 200 100K 5.6K 100 100 10 620 620 620 620 10K 4.7K 120 4K 100K Circuit Ref R4475 R4480 R4482 R4483 R4484 R4485 R4486 R4491 R4492 R4495 R4496 R4497 R4501 R4502 R4503 R4504 R4506 R4507 R4511 R4512 R4513 R4514 R4600 R4601 R4602 R4631 R4632 SH4301 SH4302 T4051 T4052 U0101 * U0111 * U0121 U0122 U0141 U0211 U0221 U0251 U0271 U0611 U0641 U0651 U0652 U3101 U3111 U3115 U4201 U4211 U4301 Motorola Part No. 0662057B47 0662057A73 0662057B05 0662057A97 0662057A93 0662057C53 0662057C53 0662057A74 0662057A73 0680195M18 0680194M23 0680195M18 0662057A67 0662057B65 0662057A63 0662057A73 0662057A73 0662057A73 0680194M18 0662057A41 0662057A73 0662057A61 0662057C19 0662057C19 0662057C19 0662057A49 0662057A82 2605782V03 2605782V03 2505515V03 2505515V04 5102226J56 5102463J64 5186137B01 5185963A21 5113805A30 5183222M49 5185963A53 5113806A20 5109699X01 5183308X01 5183308X01 5113816A07 5113815A02 5186144B01 5113805A86 5113805A86 5185963A27 5185963A33 5105750U54 Description 0 100K 200K 100K 68K 120 120 11K 10K 51 82 51 5.6K 200K 3.9K 10K 10K 10K 51 470 10K 3.3K 4.7 4.7 4.7 1K 24K VCO Shield VCO Shield Mixer 4:1 Mixer 5:1 Microprocessor EEPROM ROM SRAM REMUX Quad Opamp ASFIC MUX/DEMUX AUDIO PA Adjustable Voltage Regulator Adjustable Voltage Regulator 5V Regulator Under-Voltage Sensor IF IC CMOS Switch CMOS Switch Fract-N Voltage Regulator VCO Circuit Ref U4401 U4501 U4502 VR0151 VR0501 VR0503 VR0504 VR0505 VR0509 VR0510 VR0537 VR0541 VR0601 VR0621 VR4471 Y0131 Y3101 Y3102 Y4261 Motorola Part No. 5105109Z67 5185765B01 5185963A15 4813830A15 4805656W09 4805656W09 4813830A40 4805656W09 4813830A40 4813830A40 4813830A15 4813830A27 4813832C77 4813830A15 4813830a15 4880113R19 4880606B09 9186145B02 4880114R04 Description LDMOS PC Temperature Sensor Diode Zener Quad Zener Quad Diode Zener Quad Diode Diode Diode Diode Transient Suppressor Diode Zener Diode Crystal Oscillator, 38.4 kHz Crystal Oscillator 455 kHz Discriminator Crystal Oscillator, 16.8 MHz * Motorola Depot Servicing only Reference designators with an asterisk indicate components which are not field replaceable because they need to be calibrated with specialized factory equipment after installation. Radios in which these parts have been replaced in the field will be off-frequency at temperature extremes. 4-32 This page is intentionally left blank. 4-33 L3232 5 R0268 C3475 L3413 C3420 3 2 4 Q3421 5 6 1 C3474 C3473 L3477 R3458 D3472 8 C3407 R3418 R3419 L3472 Q3471 C3491 R3424 C3492 C3472 L3474 U3502 L3411 L3412 R3425 C3507 C3418 R3506 R0510 VR0503 L3002 C3403 C3408 C3404 C3400 C3401 R0528 VR0505 D3003 R3461 1 C3428 R3415 C3002 C3008 L3471 R3471 C3410 U3401 C3409 L3414 R3505 C3478 D3001 R3014 R3003 R3013 R3004 9 C3417 R3512 C0516 C0513 C3009 R3005 C3012 C3501 R3409 VR0501 L3101 R3007 C3034 C3018 D3471 R3413 R3513 R3416 C3508 C3004 C3005 R3015 C3011 Q3001 L3032 6 C3013 R3405 R3411 16 R3515 R3508 R0538 1 20 D3004 1 C3006 R3001 R3006 L3401 C3414 C3413 L3403 Q3502 C0542 C3019 C3010 C3014 R3402 R3407 R3516 R3514 R0182 R0524 10 4 C3347 C3346 R3400 R3410 R3403 R3401 C3425 C3426 R3408 C3509 Q3501 R0181 R0522 R0535 C3007 R3002 R3008 C3412 R0539 11 2 C3021 C3510 R3507 C3411 C3506 Q0177 C3102 C3015 R3009 T3001 C3337 L3344 L3343 C3402 Q0181 1 14 L3341 3 C0493 1 6 R0185 7 8 4 6 5 C3020 C3035 R3031 C3336 C0483 C0494 U0641 Q0185 C3114 6 5 C0488 C0482 C0487 R0186 1 2 3 C3232 C3234 R3252 C3254 D3361 4 C3017 R3335 D3341 C3342 R3336 1 2 FL3101 4 3 L3333 R3341 L0481 L0482 C0486 5 2 D3031 C0654 U0271 9 T3002 1 C3344 L3346 3 C0655 3 Q3304 D0201 R0651 C0651 C3101 C3016 C3341 C3345 D0651 4 C3032 C3324 R3342 2 R0652 6 R3362 C0496 SH3301 1 U0651 C3137 R3111 C3115 2 3 FL3102 D3362 L3361 C3363 C0245 C0652 3 R3251 C3252 C0478 C0477 C0476 C0449 C0474 C0473 C0448 C0472 C0471 C0470 C0446 C0445 C0444 L3363 C0244 C0235 Y0131 14 8 C0468 C0467 C0466 C0421 C0464 C0463 C0462 C0461 C0460 C0459 C0458 C0457 C0443 C0246 L3034 R3361 C3361 C3362 R0170 2 C3131 R3117 C3142 R3101 R3363 R0241 25 13 C0223 C0102 R0114 C3136 R3132 R0242 R0105 C0131 C3135 C3103 R3364 L3364 C3364 C3357 U0221 C0234 4 C3133 U3101 U3111 R3106 L3362 R0106 R0132 1 C3134 C3141 FL3112 C3365 C0241 C0242 C0236 C0231 C3132 R3130 C3140 R3263 C3246 C3144 C3143 C0243 37 1 C0232 C0104 C0101 R0131 C3235 R0223 R0222 C0224 C0226 C0132 32 2 R3144 C3139 C3224 C0225 R0109 C0233 17 C3214 R0224 C0222 C0221 Y3102 U3115 C3223 C3244 C0495 C0107 76 C0447 R0221 R0110 R0116 C0227 C0106 51 C0456 R0115 R0101 R0108 R0104 C0442 C0441 1 R3145 C3145 FL3114 C3233 C3243 R3211 C3215 R0102 U0101 C3221 R3223 C3227 C3253 C3245 C3211 R0261 Q0110 U0121 C0455 C0262 R0262 R0128 1 C0454 C0253 C0453 8 R0269 C0452 C0451 C0261 7 9 8 C0252 26 C3226 C3255 R3227 U3211 R0253 16 C3231 C3242 4 U0211 R0212 18 C0121 7 14 1 1 R3221 R3222 L3201 C3213 R0211 R0251 C3222 C3210 R0267 C0212 8 C0267 C0211 R0252 U0251 C0105 R3242 C3209 J0451 C0251 16 1 C0255 8 VR0510 C0501 C0510 7 R3404 C0519 C0520 C0502 C0504 C0503 C0506 C0505 C0508 C0509 C0512 C0511 C0514 C0515 C0517 C0518 R3406 C3435 C3446 C3434 L3422 C0521 C0522 C0524 C0523 C0525 C0527 C0526 C0528 C0530 C0532 C0531 C0534 C0533 C0536 C0535 C0538 C0537 C0540 C0539 R0533 C0612 C3422 C3443 5 C0601 R3431 C3455 6 U0611 R0612 R0611 R3432 C3444 1 C3458 C3423 C0484 L3432 C3447 L3433 C0603 1 10 C3438 C3440 C3445 C3439 J0501 C3441 L3421 20 C3437 J3401 C3436 C3456 11 L3443 L3444 L3431 2 3 J0601 ZWG0130227P Figure 4-19. VHF (136-174MHz) Main Board Top Side PCB 4-34 Note1: In case of interference caused by strong offchannel inband carriers, remove R3018 . This will improve intermodulation performance, but will decrease specified RX sensitivity. For critical basestation applications remove R3018, R3016, R3017. This will further improve intermodulation performance but will further decrease specified RX sensitivity. R3010 680 R3002 9V3_VHF_FE_1 9V3 9V3_VHF_FE_2 C3000 .0033uF R3011 4.7K R3000 1.5K 1 3 2 K9V1 C3011 .0033uF C3010 330pF L3031 IF_VHF_FE_1 IF 560nH C3035 20pF R3031 51 D3000 NC_D3000_1 K9V1__VHF_FE_1 560 C3007 .0033uF R3006 390 L3002 470nH Q3002 R3032 820 NU R3008 390 R3030 10 NU L3032 150nH R3033 0 C3034 82pF R3012 C3003 .0033uF SP_1_2 C3002 SP_2_2 1K 9.1pF SP_2_1 RXIN_VHF_FE_1 SP_1_1 RXIN 2 C3022 .01uF R3013 3.3K 330pF D3001 1 C3001 4.7pF SP_1_3 C3008 .001uF SP_2_3 3 R3005 R3007 10K NU 30 3,6VDC R3003 1K Q3001 R3001 100K C3004 56pF C3005 100pF C3006 56pF D3003 R3004 1.5K R3014 51 SP_3_2 R3016 100 R3017 100 C3009 R3015 10 C3014 SP_4_2 C3013 56pF C3012 SP_3_1 1 4 SP_4_1 SP_3_3 SP_4_3 3 R3009 100K C3015 56pF C3016 100pF C3017 43pF C3018 4.7pF NU R3021 560 C3025 2.7pF NU L3025 150nH NU 3 3 IO4 6 XFMR T3001 C3023 330pF NU C3024 3300pF NU C3019 .001uF 3,0 -7,5VDC 4 2 2 IO2 IO1 1 1 6 IO3 R3034 820 NU R3035 0 NU FECNTL_1_VHF_FE_1VLTG R3019 47K FECNTL_1 XFMR T3002 D3031 D3004 2 .001uF R3018 12 C3021 120pF 7.5pF C3020 .001uF L3034 RXINJ 33nH NU RXINJ_VHF_FE_1 C3031 18pF NU Figure 4-20. VHF (136-174MHz) Receiver Front End Schematic Diagram C3032 13pF NU C3033 5.1pF R3036 1K NU 4-35 FL3115 CFWC455F 1 3 2 VDD IN 13 U3111-1 MC74HC4066 9V3 9V3 Q3151 R3151 BWSELECT_VHF_IF_1 BWSELECT 4 IN 1 OUT C3151 .01uF 14 8 2 9 VDD 12.5kHz 0VDC 20/25kHz 5VDC 9V3 VSS CNTL CNTL 7 6 GND U3115-3 MC74HC4066 3 R3154 10K R3152 10K R3145 3.3K R3144 2.4K C3152 .01uF C3145 0.1uF Q3152 Q3102 5V R3112 10 R3130 51 C3132 0.1uF 44.395MHz 1 IN OUT 3 GND GND1 Y3101 2 4 12R17 6 C3133 10uF C3136 30pF U3101 3 20 C3135 33pF C3131 1pF NU 7 14 18 10 19 1 24 9 C3137 .039uF IFIC IFAMPOUT IFAMP_DEC1 GND D3101 R3111 12K R3153 10K U3115-4 MC74HC4066 FL3114 CFUCJ455D U3115-2 MC74HC4066 U3111-3 MC74HC4066 .039uF 22pF C3114 18pF 7 C3123 .039uF 0.75VDC 12 GND VSS IFAMP_DEC2 C3113 9.1pF NU L3111 620nH 6 4 3 LIMIN R3102 10 L3112 620nH 9V3 10 7 3 VDD 3 7 QUADIN R3101 12K C3115 6 9 VSS CNTL U3111-2 MC74HC4066 C3122 VDD 8 IFAMPIN C3102 15pF OUT 2 OUT LIM_DEC2 IN VDD VSS CNTL 14 LIM_DEC1 3 2 11 13 LIMOUT 0.75VDC 33pF IN 3VDC R3118 6.8K 0.1uF FL3102 12R17 1 AUDIOOUT AUDIO_FEED L3101 620nH 27pF 4 CNTL RSSIOUT C3103 6 3VDC C3112 82pF 7 MIXOUT Q3101 VDD VSS RFIN RFIN_DEC OSCIN RSSI_FEED 6.8K C3116 3 C3121 0.1uF VCC 1 2 4 5 L3100 620nH NU 0.1uF R3117 27K C3110 OUT 5 R3116 330 GND2 3.9VDC 390 C3134 0.1uF OUT GND1 GND2 GND3 GND4 IN R3107 IN U3115-1 MC74HC4066 14 OSCOUT FL3101 12R16 C3104 C3111 0.1uF 1 GND1 2 GND2 4 GND3 5 GND4 R3106 27K 5V 3 R3108 620 1 CNTL 7 U3111-4 MC74HC4066 FL3112 CFWC455D 14 R3115 5V 100 1 VSS 7 12 4 GND1 R3105 3 5 5V_VHF_IF_1 5V VDD 2 14 10K R3114 100 NU R3104 100 NU 10 VSS CNTL 9V3 4 FL3113 CFUCJ455F NU 14 VDD 2 11 OUT GND2 9V3 C3101 2.2pF NU 1 GND1 7 9V3_VHF_IF_2 1000pF 1 VSS CNTL 9V3 IFIN_VHF_IF_1 C3100 IF 14 FL3111 CFWC455G 14 2 GND2 9V3 MC74HC4066 9V3_VHF_IF_1 OUT GND1 IN R3135 1.2K 10K R3133 8.2K C3138 2.2uF Y3102 45B01 455KHz 2 C3143 120pF C3144 0.1uF 5 8 11 13 12 17 16 R3132 15K R3134 1 C3142 0.1uF 15 Q3155 NU C3155 .01uF R3155 1.2K NU C3139 0.1uF C3141 0.1uF C3140 0.1uF C3146 4700pF C3147 0.1uF R3146 680 R3147 DISCAUDIO_VHF_IF_1 DISCAUDIO RSSI 12K RSSI_VHF_IF_1 Figure 4-21. VHF (136-174MHz)Receiver IF Schematic Diagram 4-36 C3212 .018uF 5V_VHF_FN_1 5V_VHF_FN_2 (SOURCE) 1 5 2 6 4.97VDC 5V C3203 3 2 1 FEEDBACK SHUTDOWN C3213 2.2uF L3201 390nH 4 A3 5 A2 6 A1 K3 K2 K1 U3211 INPUT 8 7 3 5V Reg 9V3_VHF_FN_1 9V3 GND 13.30VDC 6.83VDC 11.28VDC C3202 .01uF OUTPUT ERROR SENSE 5V_TAP 4 C3211 0.1uF 5V C3215 2.2uF R3201 R3211 VDDA_VHF_FN_1 VDDA 47 D3201 0 C3210 2.2uF .01uF C3214 2.2uF VDDA VCOBIAS_1_VHF_FN_1 VCOBIAS_1 R3206 33K NU C3205 .01uF C3206 10uF C3208 R3226 47K NU C3225 0.1uF VCOBIAS_2_VHF_FN_1 0.1uF C3207 R3221 2.5 - 11VDC 22pF NU 1.8K C3221 .022uF LOCK_VHF_FN_1 LOCK 5VDC (Locked) TP3201 R3222 1K VCOMOD_VHF_FN_1 VCOMOD 16_8MHz_VHF_FN_1 16_8MHz TRB_VHF_FN_1 R3204 47 100 C3224 1uF 4,95VDC (R) 0VDC (T) 4.52VDC (R) 2.62VDC (T) +1dBm 0VDC (R) 4.91VDC (T) R3242 0 L3232 2.2uH NU C3246 220pF R3228 47K NU 25 16 28 46 4 45 43 1 WARP NC3 INDMULT NC2 SFOUT NC1 ADAPTSW LOCK CCOMP IADAPT REFSEL IOUT U3201 PREIN 38 SFBASE 37 TEST2 TEST1 SFCAP FRACN 3 BIAS2 2 AUX4 AUX3 BIAS1 1 48 AUX2 VBPASS AUX1 PVREF 11 VMULT4 SFIN 12 14 VMULT3 VMULT2 DATA 15 VMULT1 MODIN R3241 41 MODOUT 100 CEX 19 FREFOUT CLK 2.90VDC 24 XTAL2 3.42 23 XTAL1 C3241 VDC 56pF NU 31 29 17 42 18 32 27 26 TP3202 - 2 to +7dBm R3227 100K NU 3.63 VDC C3226 8.2pF C3227 PRESC_VHF_FN_1 R3252 39 40 PRESC C3255 100pF 2.2uF VSF_VHF_FN_1 330K 21 35 VSF R3251 200k 5VDC 30 7 10 5VDC 9 8 5VDC 0VDC C3253 4.7uF C3252 1000pF C3254 DATA_VHF_FN_1 0.1uF MODIN CSX_VHF_FN_1 CSX C3242 220pF C3244 220pF C3245 220pF C3243 220pF R3261 150K 2 CLK_VHF_FN_1 CLK VDDA C3261 62pF L3231 2.2uH 1 Y3261 XTAL 16.8MHz C3235 .01uF NU D3261 C3231 .01uF C3263 1.5pF Y3262 NU 2 OSC_16.8MHZ R3262 6.2K NU C3262 220pF R3263 100 NU FADJ 4 GND VDD 1 OUT 3 Figure 4-22. VHF (136-174MHz) Fractal-N Schematic Diagram 5V C3251 0.1uF NU DATA MODIN_VHF_FN_1 2.5VDC 47 13 36 20 34 5 TRB R3203 47 R3223 C3223 1uF NU BWSELECT_VHF_FN_1 C3222 0.1uF 1 0VDC (Unlocked) BWSELECT 1.1 - 4.1VDC PD_GND 44 PRE_GND 33 AGND 22 DGND 6 VCTRL VCOBIAS_2 C3228 0.1uF VCP VRO DVDD AVDD PRE_VDD PD_VDD VCTRL_VHF_FN_1 C3209 0.1uF C3232 .01uF C3233 2.2uF C3234 .01uF 4-37 Q3303 9.14VDC (R) UMC5N 0VDC (T) 4 9.12VDC 3.83VDC (R) 0VDC (T) 9V3_VHF_VCO_3 2.18VDC (R) 0VDC (T) 6.8pF C3301 15pF NU Q3301 R3301 75 R3308 0 330pF NU R3304 1K 1.49VDC (R) 0VDC (T) R3302 100 C3304 R3316 0 R3306 22 NU R3305 220 R3307 NU 220 NU L3311 100nH NU TXINJ_VHF_VCO_1 PRESC_VHF_VCO_1 C3333 0.1uF 5.6pF NU 4.78VDC (R) 4.22VDC (T) R3314 10 NU R3318 22 R3317 10K NU C3334 .022uF 18 C3314 10 8 6.8pF 12 7 13 17 2.56VDC (R) 2.66VDC (T) 0 - 5dBm (T) R3341 L3317 33nH FLIP_IN TRB_IN 1 2 3 4 5 6 16 15 39 D3341 C3345 VCTRL_VHF_VCO_1 L3344 2.5 - 11VDC R3343 VCTRL 1uH 100 20pF L3341 8nH R3336 15K C3342 3pF L3343 180nH C3346 .01uF L3345 1uH C3347 .01uF 20 19 VCOBIAS_1_VHF_VCO_1 R3351 20K R3353 11 9 100K C3351 4.52VDC (R) 0VDC (T) .01uF R3355 0VDC (R) 4.52VDC (T) VCOBIAS_1 VCOBIAS_2_VHF_VCO_1 R3352 12K R3354 C3352 .022uF VCOBIAS_2 150K 0VDC (R) 1.92VDC (T) L3351 20K C3355 1uH - 2 to 7dBm (T) L3318 R3323 100nH 1K .01uF VSF R3356 12K C3356 .022uF C3357 7.5pF C3361 C3318 5.6pF TRB_VHF_VCO_1 L3346 35.5nH R3342 220 TX_IADJ RX_IADJ SUPER_FLTR COLL_RFIN RX_BASE RX_EMITTER TX_BASE TX_EMITTER PRESC_OUT RX_SW TX_SW C3344 1.8pF C3341 1000pF 0.92VDC (R) 0VDC (T) 14 TX_OUT RX_OUT C3315 15pF R3315 220 NU 1.53VDC (R) 0VDC (T) U3301 VCO IC C3316 3.3pF C3303 .01uF C3324 .01uF Q3304 BFQ67W VCC_LOGIC VCC_BUFFERS 4.78VDC (R) 4.27VDC (T) Q3302 NU C3348 .01uF L3332 100nH R3321 10K C3317 33pF PRESC C3332 0.1uF C3305 C3313 330pF NU TXINJ C3331 10pF NU R3319 47K NU C3337 0.1uF C3336 .01uF 4.40VDC GND_FLAG C3306 5.1pF R3303 2.2K R3313 1K NU L3331 68nH GND_LOGIC 18nH RXINJ VSF 1uH R3335 33 47 GND_BUFFERS C3312 0.1uF NU C3302 C3335 .01uF R3331 R3312 100 NU C3311 .022uF RXINJ_VHF_VCO_1 L3301 VDDA VSF_VHF_VCO_1 L3333 R3311 100 L3302 100nH VDDA_VHF_VCO_1 4.54VDC VSF 9V3_VHF_VCO_1 9V3 9V3_VHF_VCO_2 4.97VDC 1 5 7.44VDC (R) 0VDC (T) 3 2 1000pF 0VDC (R) 4.91VDC (T) R3361 47 220 C3362 5.6pF D3361 L3364 C3364 R3362 1uH C3363 68pF 18pF L3361 56nH L3362 68nH L3363 56nH C3365 1000pF TRB C3319 1000pF R3363 R3364 VSF 39K 2.2K 4.52VDC (R) 2.62VDC (T) VCOMOD VCOMOD_VHF_VCO_1 D3362 Figure 4-23. VHF (136-174MHz)Voltage Controlled Oscillator Schematic Diagram 4-38 A+ L3402 57R01 PASUPVLTG_VHF_PA_1 PASUPVLTG C3421 .01uF C3406 1000pF C3405 1000pF C3437 0.1uF C3436 10uF L3421 57R01 C3457 1000pF C3456 1000pF L3443 57R01 L3431 57R01 L3473 1.2uH 9V3_VHF_PA_1 9V3 9V3 VCONT R3425 68 L3403 68nH C3404 2200pF C3400 R3400 1.524x20.696 Q3431 MRF5015 L3433 C3413 .022uF 4 GND1 5 GND2 12 GND3 13 GND4 C3418 24pF R3411 6.8K NU G 12.77nH L3413 27nH C3415 C3416 .022uF 2200pF R3412 5.6K C3422 1000pF 5.6K NU C3423 1uF NU C3428 C3444 220pF C3449 36pF C3447 56pF R3441 51 L3441 30nH R3459 0 NU L3422 16.96nH C3431 180pF 0.1uF R3414 820 R3455 68K R3431 51 33pF C3429 20pF NU C3434 1uF L3423 12.77nH C3435 2200pF C3491 16pF NU C3465 1000pF L3476 R3460 L3475 120nH 0 150nH NU D3452 R3457 43 C3489 130pF C3488 150pF NU 1.2uH L3494 51nH C3490 36pF C3494 47pF L3472 48nH C3464 11pF R3463 15K R3475 VR3471 10K 3 2 C3471 .022uF MOSBIAS_2_VHF_PA_1 R3404 MOSBIAS_2 10K L3471 51 1.2uH R3473 51 1 R3471 C3475 18pF C3473 150pF Q3472 K9V1_VHF_PA_1 8.87VDC 1 K9V1 RESET_VHF_PA_1 RESET FECNTL_1_VHF_PA_1 PCIC_MOSBIAS_1 9V3 FECNTL_1 FECNTL_2_VHF_PA_1 FECNTL_2 24 23 22 21 20 19 18 17 RT3471 50K NU R3416 100 CNTLVLTG R3413 C3426 2200pF R3409 4.7K NU CNTLVLTG_VHF_PA_1 5.45VDC (50W) 5.20VDC (28W) TP3402 R3513 620 9V3 CLK_VHF_PA_1 DATA_VHF_PA_1 9V3 2200pF R3515 VCONT 620 R3516 620 D3455 NU R3507 DATA C3477 2200pF NU 9V3 0.75VDC 1 TP3501 POS Q3501 R3504 1K Q3502 VOUT 2 1 R3501 R3511 100K 9V3 R3510 20K 6.8K R3508 C3508 2200pF 680 R3506 680 R3509 10K CSX_VHF_PA_1 CSX 680 0.1uF R3514 620 3.3K C3510 C3496 43pF RXIN C3472 150pF 470 CLK C3425 1uF C3498 47pF TP3404 Q3471 R3406 150K C3509 R3408 150K 51nH 1000pF R3505 680 R3512 100K C3478 2200pF C3501 2200pF Q3473 NU R3477 43 NU R3476 220 NU GND 3 U3502 LM50 C3507 100pF R3502 39K 2.77VDC (50W) 2.65VDC (28W) 25 26 27 28 29 30 31 32 VAR3 RX NA RS VAR1 VLIM VAR2 V5EXT 3.70 - 3.90VDC 1 L3493 51nH C3474 RXIN_VHF_PA_1 D3472 C3420 82pF R3415 100 TP3406 L3492 C3466 1000pF R3474 GND2 CLK BPOS DATA CEX TEMP RSET ANO U3501 H99S-4 R3503 1K C3505 1uF V45 VG V10 CQX CQ Q QX F168 1 RFIN 2 C3502 2200pF 3 T1 CI 4 INT 5 CJ 6 VL 7 CL 8 GND1 R3410 68K R3490 47K L3491 51nH 39K 2.75 - 2.90VDC R3432 51 TP3407 470pF L3477 D3471 R3464 0 TP3403 C3461 2200pF Spacing: 0.254 Center: 1.905x29.03 Reverse: 0.254x23.91 Forward: 0.254x22.674 C3492 L3474 12nH D3451 R3462 C3432 82pF C3430 Q3421 5105385Y70: C3453 10pF NU C3460 0.1uF R3453 820K L3442 57R01 C3451 18pF C3450 68pF C3459 C3448 100pF 36pF 9V3 R3461 62 C3452 68pF L3445 18nH 1.905x15.685 A+ PCIC_MOSBIAS_1 2200pF C3443 220pF R3458 0 C3468 18pF NU C3467 82pF R3444 1MEG Q3441 C3446 MRF247 56pF C3442 390pF G1 G2 G3 G4 R3442 10 C3424 R3419 20 R3443 1MEG L3444 33nH C3433 10pF R3433 R3434 R3435 56 56 56 R3418 C3445 1000pF C3439 1uF 4.953x8.763 C3455 56pF L3412 L3414 33nH 4.22nH C3417 2200pF R3417 5.6K NU C3410 .022uF R3436 120 C3408 18pF 470 2200pF TP3401 U3401 16 TXINJ_VHF_PA_1 R3402 C3401 1 6 TXINJ RFIN RFOUT1 14 VD1 RFOUT2 7 43 2200pF 1 VCNTRL VG1 2 11 VG2 3 G2 R3403 R3401 5105109Z67: 0 to 5dBm 9 130 130 NC1 10 NC2 R3405 15 NC3 100 8 NC4 C3458 .01uF R3437 120 C3407 2200pF L3411 68nH C3438 0.1uF NU L3432 36.54nH S1 S2 S3 S4 L3401 39nH C3441 1000pF C3440 0.1uF D R3424 68 C3403 33pF NU C3412 2200pF 1.524x8.751 C3409 2200pF C3411 .022uF C3414 2200pF C3402 .022uF C3504 2200pF C3503 2200pF 16 15 14 13 12 11 10 9 9V3 C3506 2200pF 3.77VDC (50W) 2.68VDC (28W) R3517 100K PA_PWR_SET_VHF_1 PA_PWR_SET R3518 10K NU TEMPSENSE_CNTLR_1 TEMPSENSE Figure 4-24. VHF (136-174MHz) Power Amplifier Schematic Diagram J3401 C3497 20pF 4-39 Table 4-5. VHF (136-174MHz) Radio Parts List Circuit Ref C3000 C3001 C3002 C3003 C3004 C3005 C3006 C3007 C3008 C3009 C3010 C3011 C3012 C3013 C3014 C3015 C3016 C3017 C3019 C3020 C3021 C3022 C3033 C3034 C3035 C3101 C3102 C3103 C3104 C3110 C3111 C3112 C3114 C3115 C3116 C3121 C3122 C3123 C3132 C3133 C3134 C3135 C3136 C3137 C3138 C3139 C3140 C3141 C3142 Motorola Part No. 2113741F37 2113740F19 2113740F26 2113741F37 2113740F45 2113740F51 2113740F45 2113741F37 2313741F25 2313741F13 2313741F13 2113741F37 2313741F25 2313740F45 2313740F24 2313740F45 2313740F51 2313740F42 2313741F25 2313741F25 2313740F53 2313740F49 2313740F20 2113740F49 2113740F31 2113740F32 2113740F31 2113740F39 2113743E20 2113740F37 2113743E20 2113740F49 2113740F33 2113740F35 2113743E20 2113743E20 2113743E11 2113743E11 2113743E20 2311049A57 2113743E20 2113740L30 2113740L29 2113743E11 2311049A40 2113743E20 2113743E20 2113743E20 2113743E20 Description 3.3nF 4.7pF 9.1pF 3.3nF 56pF 100pF 56pF 3.3nF 10pF 330pF 330pF 3.3nF 10pF 56pF 7.5pF 56pF 100pF 43pF 10pF 10pF 82pF 10nF 5.1pF 10nF 15pF 16pF 15pF 33pF 100nF 27pF 100nF 82pF 18pF 22pF 100nF 100nF 0.1uF 39nF 39nF 10uF 100nF 33pF 30pF 39nF 2.2uF 100nF 100nF 100nF 100nF Circuit Ref C3143 C3144 C3145 C3146 C3147 C3151 C3152 C3155 C3202 C3203 C3205 C3206 C3207 C3208 C3209 C3210 C3211 C3212 C3213 C3214 C3214 C3221 C3222 C3224 C3225 C3226 C3227 C3228 C3231 C3232 C3233 C3234 C3242 C3243 C3244 C3245 C3246 C3252 C3253 C3254 C3255 C3261 C3262 C3263 C3302 C3303 C3306 C3311 C3314 C3315 C3316 Motorola Part No. 2113740F53 2113743E20 2113743E20 2113741F41 2113743E20 2113741F49 2113741F49 2113741F49 2113741F49 2113741F49 2113741F49 2311049A57 2113740F35 2113743E20 2113743E20 2311049A40 2113743E20 2113743E05 2311049A40 2311049A09 2311049A09 2113743E07 2113743E20 0882422W33 2113743E20 2313740F25 2313740F51 2113743E20 2113741F49 2113741F49 2311049A40 2113741F49 2113740F59 2113740F59 2113740F59 2113740F59 2113740F59 2313741F25 2311049A56 2113743E20 2311049A40 2313740L38 2313740F61 2313740F07 2113740F23 2113741F49 2113740F20 2113743E07 2113740F23 2113740F31 2113740F15 Description 120pF 100nF 100nF 4.7uF 100nF 10nF 10nF 10nF 10nF 10nF 10nF 10uF 22pF 100nF 100nF 2.2uF 100nF 18nF 2.2uF 2.2uF 2.2uF 22nF 100nF 1uF 100nF 8.2pF 100pF 100nF 10nF 10nF 2.2uF 10nF 220pF 220pF 220pF 220pF 220pF 1nF 4.7uF 100nF 2.2uF 68pF 270pF 1.5pF 6.8pF 10nF 5.1pF 22nF 6.8pF 15pF 3.3pF Circuit Ref C3317 C3318 C3319 C3324 C3332 C3333 C3334 C3335 C3336 C3337 C3341 C3342 C3344 C3345 C3346 C3347 C3348 C3351 C3352 C3355 C3356 C3357 C3361 C3362 C3363 C3364 C3365 C3400 C3401 C3402 C3404 C3405 C3406 C3407 C3408 C3409 C3410 C3411 C3412 C3413 C3414 C3415 C3416 C3417 C3418 C3420 C3421 C3422 C3424 C3425 C3426 Motorola Part No. 2113740F39 2113740F21 2113741F25 2113741F49 2113743E20 2113743E20 2113743E07 2113741F49 2311041F49 2113743E20 2113741F25 2113740L05 2113740F09 2113740L25 2311041F49 2311041F49 2311041F49 2311041F49 2113743E07 2311041F49 2113743E07 2113740F24 2113741F25 2113740F21 2113740F47 2113740F33 2113741F25 2113741F33 2113741F33 2113743E07 2113741F33 2113740A79 2113740A79 2113741F33 2113740F33 2113741F33 2113743E07 2113743E07 2113741F33 2113743E07 2113741F33 2113743E07 2113741F33 2113741F33 2113740F36 2113740F49 2113741A45 2113740A79 2113741A45 2113928E01 2113741F33 Description 33pF 5.6pF 1nF 10nF 100nF 100nF 22nF 10nF 10nF 100nF 1nF 3.0pF 1.8pF 20pF 10nF 10nF 10nF 10nF 22nF 10nF 22nF 7.5pF 1nF 5.6pF 68pF 18pF 1nF 2.2nF 2.2nF 22nF 2.2nF 1nF 1nF 2.2nF 18pF 2.2nF 22nF 22nF 2.2nF 22nF 2.2nF 22nF 2.2nF 2.2nF 24pF 82pF 10nF 1nF 68pF 1uF 2.2nF Circuit Ref C3428 C3430 C3431 C3432 C3433 C3434 C3435 C3436 C3437 C3439 C3440 C3441 C3442 C3443 C3444 C3445 C3446 C3447 C3448 C3449 C3450 C3451 C3452 C3455 C3456 C3457 C3458 C3459 C3460 C3461 C3464 C3465 C3466 C3467 C3471 C3472 C3473 C3474 C3475 C3478 C3489 C3490 C3492 C3494 C3496 C3497 C3498 C3501 C3502 C3503 C3504 Motorola Part No. 2113741F33 2113740A41 2113740A61 2113740A53 2113740A29 2113741A45 2113741F33 2113741A45 2113741M69 2113741W01 2113741M69 2113740A79 2111078B57 2111078B51 2111078B51 2113740A79 2180464E50 2180464E50 2111078B36 2111078B36 2111078B38 2111078B31 2111078B38 2111078B36 2113740A79 2113740A79 2113741A45 2180464E20 2113743E20 2113741F33 2113740F28 2113740A79 2113740A79 2111078B37 2113743E07 2111078B47 2111078B47 2113740A79 2113741F33 2113741F33 2111078B45 2111078B31 2111078B59 2111078B34 2111078B33 2111078B21 2111078B34 2113741F33 2113741F33 2113741F33 2113741F33 Description 2.2nF 33pF 82pF 220pF 10pF 10nF 2.2nF 10uF 0.1uF .01uF 1uF 1nF 390F 1nF 56pF 56pF 56pF 56pF 68pF 36pF 68pF 56pF 1nF 1nF 10nF 82pF 100nF 2.2nF 11pF 1nF 1nF 62pF 22nF 150pF 150pF 1nF 18pF 18pF 130pF 36pF 470pF 47pF 43pF 20pF 47pF 2.2nF 2.2nF 2.2nF 2.2nF 4-40 Circuit Ref Motorola Part No. C3505 C3506 C3507 C3508 C3509 C3510 CR3301 CR3302 CR3303 2311049A07 2113741F33 2113740F51 2113741F33 2113741F33 2113743E20 4802245J42 4805129M96 4880154K03 CR411 CR412 CR413 CR440 CR501 CR503 D3000 D3001 D3003 D3004 D3031 D3101 D3201 D3261 D3341 D3361 D3362 D3451 D3452 D3471 D3472 FL3101 FL3102 FL3111 FL3112 FL3114 FL3115 L3002 L3025 L3032 L3100 L3101 L3111 L3112 L3201 L3231 L3301 L3302 L3317 L3318 L3331 4802245J47 4802245J47 4802245J47 4813833C02 4880107R01 4805729G49 4813833C02 4805649Q13 4880154K03 4805649Q13 4886143B01 4880154K03 4802233J09 4802245J22 4805649Q13 4805649Q13 4862824C01 4882290T02 4882290T02 4802482J02 4802482J02 9180112R16 9180112R16 9180469V04 9180469V06 9180469V06 9180469V03 2462587T23 2462587T17 2462587T17 2462587T22 2462587T25 2462587T25 2462587T25 2462587T23 2462587Q42 2462587N44 2462587N53 2462587V28 2462587V34 2462587H32 Description 1uF 2.2nF 100pF 2.2nF 2.2nF 100nF Ring Quad Diode SMBV1032 Dual Common Anode Cathode Schottky Diode Schottky Diode Schottky Diode Dual Diode Common Cathode Rectifier LED Red/Yel Diode Dual Varactor Diode Dual Varactor Diode Mixer Triple Diode Triple Diode Varactor Dual Varactor Dual Varactor Varactor Diode, Hot Carrier Diode, Hot Carrier Diode, Pin Diode, Pin Crystal Filter, 44.85MHz Crystal Filter, 44.85MHz Filter, 455kHz Filter, 455kHz Filter, 455kHz Filter, 455kHz 470nH 150uH 150uH 390nH 620uH 620nH 620nH 390nH 2.2uH 18nH 100nH 33nH 100nH 68nH Circuit Ref L3332 L3333 L3341 L3343 L3344 L3345 L3346 L3351 L3361 L3362 L3363 L3364 L3401 L3402 L3403 L3411 L3412 L3413 L3414 L3421 L3422 L3423 L3431 L3432 L3433 L3441 L3442 L3443 L3444 L3445 L3471 L3472 L3473 L3474 L3475 L3477 L3491 L3492 L3493 L3494 Q3001 Q3002 Q3101 Q3102 Q3151 Q3152 Q3301 Q3303 Q3304 Q3421 Q3431 Motorola Part No. 2462587V15 2462587Q47 2484562T13 2462587N56 2462587N68 2460591N68 2484562T18 2462587N68 2462587N50 2462587N51 2462587N50 2462587N68 2462587X48 2484657R01 2462587T13 2462587T13 2462587X47 2462587X46 2460591A01 2462587R01 2460591C73 2460591B73 2462587R01 2460591F77 2460591B73 2460591E77 2462587R01 2462587R01 2460591X03 2460591X01 2462587X69 2460591X05 2462587X69 2462587N42 2462587N55 2462587X69 2460591B01 2460591B01 2460591B01 2460591B01 4813827A07 4813824A17 4813827A07 4813827A07 4880048M01 4880048M01 4813827A07 4802245J50 4805218N63 5105385Y70 4805537W01 Description 100nH 1uH 8nH 180nH 1uH 1uH 35.5nH 1uH 56nH 68nH 56nH 1uH 39nH Ferrite Bead 68nH 68nH 33nH 27nH 4.22nH Ferrite Bead 100nH 100nH Ferrite Bead 35.5nH 12.77nH 30nH Ferrite Bead Ferrite Bead nH nH 1.2uH 48nH 1.2uH 12nH 150nH 1.2uH 51nH 51nH 51nH 51nH NPN PNP NPN NPN NPN NPN NPN Dual NPN/PNP RF LDMOS MOS Circuit Ref Q3441 Q3471 Q3472 Q3501 Q3502 R3000 R3001 R3002 R3003 R3004 R3006 R3007 R3008 R3009 R3010 R3011 R3012 R3013 R3014 R3015 R3016 R3017 R3018 R3019 R3021 R3031 R3033 R3101 R3102 R3105 R3106 R3107 R3108 R3111 R3112 R3115 R3116 R3117 R3118 R3130 R3132 R3133 R3134 R3135 R3144 R3145 R3146 R3147 R3151 R3152 R3153 Motorola Part No. 4884411L04 480048M01 4805128M27 4813824A17 4813824A10 0662057A53 0662057A97 0662057A43 0662057A49 0662057A53 0662057A39 0662057A12 0662057A37 0662057A97 0662057A45 0662057A65 0662057A49 0662057A61 0662057A18 0662057A01 0662057A29 0662057A29 0662057A09 0662057A89 0662057A43 0662057A18 0662057B47 0662057A75 0662057A01 0662057A25 0662057A83 0662057A69 0662057A44 0662057A75 0662057A01 0662057A39 0662057A37 0662057A83 0662057A69 0662057A18 0662057A77 0662057A71 0662057A73 0662057A51 0662057A58 0662057A61 0662057A45 0662057A75 0662057A73 0662057A73 0662057A73 Description RF Power NPN PNP PNP NPN 1K 100K 560 1K 1K 390K 30 390 100K 680 4K 1K 3K 51 10 150 150 22 47K 560 51 0 12K 10 100 27K 6K 620 12K 10 390 330 27K 6K 51 15K 8K 10K 1K 2K 3K 680 12K 10K 10K 10K Circuit Ref R3154 R3201 R3203 R3204 R3211 R3221 R3222 R3223 R3227 R3241 R3242 R3251 R3252 R3261 R3301 R3302 R3303 R3304 R3308 R3311 R3316 R3318 R3321 R3323 R3331 R3335 R3336 R3341 R3342 R3343 R3351 R3352 R3353 R3354 R3355 R3356 R3361 R3362 R3363 R3364 R3400 R3401 R3402 R3403 R3404 R3405 R3406 R3408 R3410 R3412 R3413 Motorola Part No. 0662057A73 0662057A17 0662057A17 0662057A17 0662057B47 0662057A55 0662057A49 0662057A25 0662057A97 0680539A25 0662057B47 0662057B05 0662057B10 0662057B02 0662057A22 0662057A25 0662057A57 0662057A49 0662057B47 0662057A25 0662057B47 0662057A09 0662057A73 0662057A49 0662057A17 0662057A13 0662057A77 0662057A33 0662057A15 0662057A25 0662057A80 0662057A75 0662057A97 0662057B02 0662057A80 0662057A75 0662057A33 0662057A17 0662057A87 0662057A57 0662057A41 0662057A28 0662057A16 0662057A28 0662057A73 0662057A25 0662057B02 0662057B02 0662057A73 0662057A67 0662057A61 Description 10K 47 47 47 0 1K 1K 100 100K 100 0 200K 330K 150K 75 100 2K 1K 0 100 0 22 10K 1K 47 33 15K 220 39 100 20K 12K 100K 150 20K 12K 220 47 39K 2K 470 130 43 130 10K 100 150K 150K 10K 5K 3K 4-41 Circuit Ref R3414 R3415 R3416 R3419 R3424 R3425 R3431 R3432 R3433 R3434 R3435 R3436 R3437 R3441 R3442 R3443 R3444 R3453 R3455 R3457 R3460 R3461 R3462 R3463 R3464 R3471 R3473 R3474 R3475 R3490 R3501 R3502 R3503 R3504 R3505 R3506 R3507 R3508 R3509 R3510 R3511 R3512 R3513 R3514 R3515 R3516 R3517 T3001 T3002 U3101 U3111 Motorola Part No. 0662057T71 0662057A25 0662057A25 0662057C34 0662057K21 0662057K21 0662057M18 0662057M18 0662057C45 0662057C45 0662057C45 0662057T51 0662057T51 0662057M18 0662057C27 0662057D48 0662057D48 0662057B20 0662057A93 0662057M16 0662057C01 0662057M20 0662057A87 0662057D04 0662057C01 0662057A41 0662057M18 0662057M18 0662057A73 0662057A89 0662057A69 0662057A87 0662057A49 0662057A49 0662057C71 0662057C71 0662057C71 0662057C71 0662057A73 0662057A80 0662057A97 0662057A97 0662057A69 0662057A69 0662057A69 0662057A69 0662057A97 2508396X02 2508397X02 5186144B01 5113805A86 Description 820 100 100 20 68 68 51 51 56 56 56 120 120 51 10 1M 1M 820K 68K 0 62 39K 15K 0 470 51 51 10K 47K 6K 39K 1K 1K 680 680 680 680 10K 20K 100K 100K 6K 6K 6K 6K 100K Transformer Transformer SA616 Quad Analog Mux/Demux Circuit Ref Motorola Part No. Description U3115 5113805A86 Quad Analog Mux/Demux U3201 5185963A27 Ground Fault Protection U3211 5185963A33 Voltage Regulator U3301 5105750U54 VCO Buffer U3401 5105109Z67 LDMOS UHF/VHF Driver U3501 5105750U54 Power Control U3502 5185963A15 Temperature Sensor VR3471 4813830A15 Diode, 5.6V T3001 2508396X02 Transformer T3002 2508396X02 Transformer Y3101 4880606B09 Crystal Oscillator, 44.395MHz Y3102 9186145B02 Crystal Filter, 45.85MHz Y3261 4880114R04 Crystal Oscillator, 16.8MHz * Motorola Depot Servicing only 4-42 This page intentionally left blank CDM™ and PRO SERIES™ Mobile Radios contact contact PRO7100 control control C A, Motorola, Professional Radio, CDM Series and CDM Model numbers, PRO Series and PRO Series Model numbers are trademarks of Motorola. © 1999 Motorola, Inc. All rights reserved. Printed in USA. *6881091C63* 68P81091C63-O Detailed Service Manual Professional Radio CDM™ and PRO SERIES™ As Dedicated As You Are Mobile Radios