Download Sharp MD-MT877C MiniDisc Player User Manual
Transcript
MD-MT877/MD-MT877C SERVICE MANUAL No. S3118MDMT877/ PORTABLE MINIDISC RECORDER MD-MT877(S) MODEL MD-MT877C(S) • In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be used. CONTENTS Page SPECIFICATIONS ................................................................................................................................................................. 2 NAMES OF PARTS ............................................................................................................................................................... 3 OPERATION MANUAL .......................................................................................................................................................... 5 DISASSEMBLY .................................................................................................................................................................... 10 REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................... 11 ADJUSTMENT ...................................................................................................................................................................... 12 NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 28 TYPES OF TRANSISTOR AND DIODE .............................................................................................................................. 28 BLOCK DIAGRAM ............................................................................................................................................................... 29 SCHEMATIC DIAGRAM ...................................................................................................................................................... 30 WIRING SIDE OF P.W.BOARD ........................................................................................................................................... 32 VOLTAGE ............................................................................................................................................................................ 36 WAVEFORMS OF MD CIRCUIT ......................................................................................................................................... 37 TROUBLESHOOTING ......................................................................................................................................................... 38 FUNCTION TABLE OF IC .................................................................................................................................................... 41 PARTS GUIDE/EXPLODED VIEW PACKING OF THE SET (MD-MT877(S) FOR U.S.A. ONLY) SHARP CORPORATION This document has been published to be used for after sales service only. The contents are subject to change without notice. MD-MT877/MD-MT877C FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS Power source DC 1.2V: DC 5V: DC 1.5V: DC 1.5V: Rechargeable Nickel-Metal Hydride battery (AD-N55BT) x 1 AC adaptor (AC 120V, 60 Hz) Commercially available, “AA” size (LR6), alkaline battery x 1 Separately available car adaptor, AD-CA55X (for cars with a 12-24V DC negative ground electrical system) (Used with separately available plug adaptor (AD-M66PA)) Power consumption 7 W (AC adaptor) Output power RMS; 10 mW (5 mW + 5 mW) (0.2% T.H.D.) Charging time Approx. 3.5 hours Input sensitivity MIC H: reference input level 0.25 mV input impedance 10 k ohms MIC L: reference input level 2.5 mV input impedance 10 k ohms LINE: reference input level 100 mV input impedance 20 k ohms Output level Earphones: maximum output level 5 mW + 5 mW load impedance 32 ohms LINE: specified output 250 mV (-12 dB) load impedance 10 k ohms Dimensions Width: 2-27/32” (71.9 mm) Height: 11/16” (16.8 mm) Depth: 3-1/8” (78.7 mm) Weight 0.29 lbs. (131 g) with rechargeable battery Input jack Output jack Type Signal readout Audio channels Frequency response Rotation speed Error correction Coding Recording method Sampling frequency Wow and flutter Battery life Line/optical digital, microphone (powered by the main unit) Earphones (impedance: 32 ohms)/remote control unit Portable MiniDisc recorder Non-contact, 3-beam semiconductor laser pickup Stereo 2 channels/monaural (long-play mode) 1 channel 20 – 20,000 Hz (± 3 dB) Approx. 400 – 1,350 rpm ACIRC (Advanced Cross Interleave Reed-Solomon Code) ATRAC/ATRAC3 (Adaptive TRansform Acoustic Coding), 24-bit computed type Magnetic modulation overwrite method 44.1 kHz (32 kHz and 48 kHz signals are converted to 44.1 kHz, and then recorded.) Unmeasurable (less than ±0.001% W. peak) When using the rechargeable battery (fully charged) included with the unit When using one, commercially available, high capacity, “AA” size (LR6), alkaline battery (The rechargeable battery is in the unit, discharged.) When using one, commercially available, high capacity, “AA” size (LR6), alkaline battery with the rechargeable battery (fully charged) Stereo Continuous Continuous recording: play: Approx. Approx. 6.5 hours 12 hours Continuous Continuous recording: play: Approx. Approx. 6 hours 16 hours Continuous Continuous recording: play: Approx. Approx. 15 hours 29 hours 2 times long Continuous Continuous recording: play: Approx. Approx. 9 hours 13.5 hours Continuous Continuous recording: play: Approx. Approx. 10 hours 19.5 hours Continuous Continuous recording: play: Approx. Approx. 22 hours 33 hours ● The above values are the standard values when the unit is operated horizontally and charged at an ambient temperature of 77°F (25°C). (The operable duration with the rechargeable battery will be shorter when the unit is carried around.) 4 times long Continuous Continuous recording: play: Approx. Approx. 11.5 hours 15 hours Continuous Continuous recording: play: Approx. Approx. 13 hours 22 hours Continuous Continuous recording: play: Approx. Approx. 30 hours 40 hours ● Operable duration with a commercially available battery varies depending on its maker, type, and conditions of use. ● “Fully charged” means that the charging is complete after approximately 3.5 hours since the remaining amount of the battery is reduced to “ ” (1 bar). ● The volume level is set at “VOL 15”. ● The LED is set at “LIGHT OFF”. Specifications for this model are subject to change without prior notice –2– MD-MT877/MD-MT877C NAMES OF PARTS Main unit 1. Record/Track Mark Button 2. Mode Button 3. Volume/Cursor/Fast Forward/Fast Reverse/ Recording Level/Name Select Button 4. Stop/Power Off/Hold Button 5. Open Lever 6. Display/Character Select Button 7. Edit/Auto Mark/Time Mark Button 8. Play/Pause Button 9. Enter/Fast Play/Synchro Button 10. Bass/Delete Button 11. Rechargeable Battery Cover 12. Handstrap Holder 13. Optical/Line Input Jack 14. Microphone Input Jack 15. Remote Control/Earphones/Line Output Jack 1 2 3 8 4 9 10 5 6 7 11 15 12 13 7 8 9 10 11 12 1 2 3 4 5 6 Main unit display panel 1. Level Meter 02. Record Indicator 03. Synchro Recording Indicator 04. Operation Indicator 05. Long-play/Recording Mode Indicator 6. Character/Time Information Indicator 7. Repeat Indicator 8. Battery Indicator 9. Random Indicator 10. Track Number Indicator 11. TOC Indicator 12. Disc Name Indicator Yellowgreen Blue Orange 3-color LED Various modes are indicated with three colors of lights. Charging Lighting starting with yellow-green light. Refresh Extinguishing starting with orange light after all the lights are lit. Playback Flashing the color of the activated playback mode. Recording Flashing the color of the activated recording mode. Fast Forward Flashing starting with yellow-green light. Fast Reverse Flashing starting with orange light. Volume (+) Lighting starting with yellow-green light. Volume (–) Extinguishing instantly starting with orange light after all the lights are lit. TOC Reading: flashing at random. –3– 14 MD-MT877/MD-MT877C Remote control unit 1. 2. 3. 4. 5. 6. 7. 8. 9. Remote control display panel 1. 02. 03. 04. 05. 06. 07. 08. 09. 10. 1 Earphones Jack Fast Forward/Fast Reverse Button Display Button Play Mode Button Sound/Track Mark Button Stop/Power Off Button Play/Pause Button Volume Button Hold Switch Record Indicator Track Number Indicator Operation Indicator Character/Time Information Indicator Battery Indicator Random Indicator Synchro Recording Indicator Total Track Number Indicator Long-play/Recording Mode Indicator Repeat Indicator 2 7 6 1 2 7 3 4 5 9 8 3 4 8 5 6 9 10 2 Battery charger 1. Remote Control Holder (You can hang the remote control on it.) 2. Lock Detector 3. Hook For Fixing The Main Unit 4. Charge/Operation Switch 5. Stand 6. AC Adaptor Connecting Jack 3 1 CHAR GE OPER ATIO N 4 5 6 –4– MD-MT877/MD-MT877C OPERATION MANUAL Using with the Rechargeable Battery Charging Do not force the battery cover open too far. When the rechargeable battery is used for the first time or when you want to use it after a long period of disuse, be sure to charge it fully. 1 2 3 AC 120V 60Hz Insert the rechargeable battery. Move the Charge/Operation switch to charge mode. Place the portable MD into the battery charger and connect the AC adaptor. ● After the rechargeable battery is charged or used, it will get slightly warm. This is normal. Charge mode ● When the portable MD is turned on or operating, the bat- tery will not be charged. To the DC IN 5V jack Checking Displays Checking the remaining amount of battery level The remaining amount of battery level is shown by the battery indicator ( ) during operation. How to read the battery indicator When the battery level is high When the battery low is very low ● When the battery is completely discharged, the battery indicator will flash. Recharge the battery or replace the alkaline battery with a new one. ● When the battery has run completely out, “BATT EMPTY (LoBATT)” will appear. Then, the power will be disconnected automatically. Notes: ● If you use the battery which you stopped charging halfway, “ ” may appear. It does not mean that the battery is completely charged. ● The battery indicator will not correctly display the remaining capacity for approximately 20 seconds after the power has been turned on. ● When the AC adaptor or a separately available car adaptor is used, the battery indicator will not be shown. ● The number of bars shown in the battery indicator may increase or decrease, depending on the operation being performed. This is normal. –5– MD-MT877/MD-MT877C Error Messages ERROR MESSAGES BATT EMPTY MEANING REMEDY ● The battery is run down. ● Nothing is recorded. ● Charge the rechargeable battery or replace the alkaline battery (or use the AC adaptor for power). ● Replace the disc with a recorded disc. ● You tried to record from a copy prohibited MiniDisc. ● A track cannot be edited. ● Record using the analog cable. (MD-MT877(S)) ● Record using the analogue cable. (MD-MT877C(S)) ● Change the stop position of the track and then edit it. ● The disc data cannot be read because the disc is damaged. ● Reload the disc. ● Replace it with another recorded disc. ● Recording cannot be performed correctly due to vibration or shock. ● Stamp function does not work. ● Cannot save the TOC information correctly to a MiniDisc. (A large portion of the disc has been damaged.) ● The Charge/Operation switch is not set to the operation mode when using this unit with the AC adaptor. ● The disc is scratched. ● Re-record or replace it with another recordable disc. (LoBATT) BLANK MD (BLANK) Can’t COPY (Can’tC) Can’t EDIT (Can’tE) Can’t READ * (Can’tS) (Can’tT) (Can’tU) Can’t REC (Can’tR) Can’t STAMP Can’t WRITE (Can’tW) CHARGEmode DEFECT (DEFECT) DISC FULL Er-MD ** (ErMD*) HOLD ● The disc is out of recording space. ● The microprocessor has reported a system fault and the unit is out of order. ● The unit is in the hold mode. ● Check the number of tracks. ● Replace the disc with another recordable disc. ● Set the Charge/Operation switch to the operation mode. ● ● ● ● If the sound you hear is not right, record again. Replace the disc with another recordable disc. Replace it with another recordable disc. To have it repaired, go to the distributor where you purchased the unit. ● Return the HOLD switch to its original position. (HOLD) LOCKED (Can’tLOCK) ● You removed a MiniDisc while recording or editing. ● Turn off the power and remove the MiniDisc. Error Messages : continued ERROR MESSAGES NO DISC NO SIGNAL (noSIG.) PLAY MD MEANING REMEDY ● A disc has not been loaded. ● Load a disc. ● Poor connection of the digital cable. ● Connect the digital cable securely. ● No output signal comes out from the connected ● If the portable CD player has a function to prevent sound unit to playback. skips, deactivate it. ● The input signal has improper sampling fre- ● Playback with the connected unit. quency. ● You recorded on a playback-only disc. ● Replace it with a recordable disc. (PLAYmd) POWER ? ● The battery charger is defective. PROTECTED ● The write protection tab of a MiniDisc is set to the protected position. ● You tried to record on a playback-only disc. ● Since a track number is currently being located or updated, the unit cannot accept your command. ● The temperature is too high. SORRY (Sorry) TEMP OVER ● To have it repaired, go to the distributor where you purchased the unit. ● Move the write protection tab back to its original position. ● Replace it with a recordable MiniDisc. ● Wait for a while and try the operation again. ● Turn off the power, and wait for a while. (TEMP!) TOC FORM ** ● There is an error in the recording signal. ● Erase all of the tracks, and then record again. ● There is no space left for recording character information (track names, disc names, etc.). ● The track has been protected from being erased. ● A disc which contains data other than music was played. ● There is an error in the signal recorded on the disc. ● Stamping is not possible. ● Replace it with another recordable disc. (Tform**) TOC FULL Tr. Protect ? DISC (? DISC) ( ) : Error messages seen on the remote control. Number or symbol appears in * position. –6– ● Edit the track with the device on which it was recorded. ● A disc which contains non-music data cannot be played. ● Replace it with another recorded disc. ● Retry. MD-MT877/MD-MT877C MiniDisc System Limitations The unit may have the following symptoms while recording or editing. The unit is not out of order. SYMPTOM LIMITATIONS “DISC FULL” or “TOC FULL” appears More than 255 tracks (maximum) cannot be recorded regardless of the reeven though the MiniDisc still has re- cording time. cording time left. If the MiniDisc is recorded or edited repeatedly or if it has scratches (recording skips scratched parts), you may not be able to record the maximum tracks above. The remaining recording time does not The unit does not count non-recorded portions that last 12 or fewer seconds increase even though you erased tracks. to display the remaining recording time. The time may not increase even if you erase short tracks. The total of the recorded time and the One cluster (approximately 2 seconds) is the minimum unit for recording. remaining time does not match the maxi- For example, a 3-second track uses 2 clusters (approximately 4 seconds). mum recordable time. Therefore, the actual recordable time may be shorter than the displayed time. Combine function does not work. A MiniDisc on which recording and editing are repeated may not allow the combine function. Sound skips in fast reverse/forward. One track is divided and recorded in separate places on a repeatedly recorded or edited MiniDisc. Sound may skip. A track number is created in the middle A track number may be created if there are scratches or dust on the MiniDisc. of a track. Troubleshooting Many potential “problems” can be resolved by the owner without calling a service technician. If something seems to be wrong with this product, check the following before calling your authorized SHARP dealer or service center. PROBLEM CAUSE PROBLEM The unit does not ● Is the AC adaptor disconnected? turn on. ● Is the battery exhausted? ● Is the unit in the hold mode? ● Has condensation formed inside the unit? ● Is the unit being influenced by mechanical shock or by static electricity? No sound is ● Is the volume set too low? heard from the ● Is the remote control unit or the earearphones. phones plugged in? ● Are you trying to play a MiniDisc with data on it instead of a MiniDisc containing music? When the opera- ● Is the unit in the hold mode? tion buttons are ● Is the battery exhausted? pressed, the unit ● Is the remote control unit plug or the earphones plug inserted firmly? does not respond. Some sounds ● Is the battery exhausted? ● Is the unit being subjected to excesare skipped. sive vibration? –7– CAUSE The MiniDisc can- ● Has the track number or character not be ejected. information been updated on the disc yet? ● Is the unit in the recording or editing mode? Recording and ● Is the MiniDisc protected against editing are imaccidental erasure? possible. ● Is the unit connected properly to the other equipment? ● Is the AC adaptor unplugged or did a power failure occur while recording or editing? ● Is the unit in the hold mode? ● Is an optical signal being output from the stereo system? Read the operation manual for the stereo system. The battery cannot ● Is the select switch for charging/ be charged. operation set on the charging side? ● Is the jack clean? Nothing appears ● Is the remote control display set to on the remote “LIGHT OFF”? control display. MD-MT877/MD-MT877C 1 2 Insert a MiniDisc Inserte un minidisco 2 Connect the AC adaptor Conecte el adaptador de CA Insert according to the direction of the arrow. 4 Insértelo de acuerdo con la dirección de la flecha. AC 120V, 60 Hz 120V CA, 60Hz 3 1 To an AC outlet A un tomacorriente de CA RELEASE LOCK 1 Slide the OPEN lever to re- 3 Insert a MiniDisc as shown. lease the compartment door. Deslice la palanca OPEN para abrir la puerta del compartimiento. To the DC IN 5V jack Inserte un minidisco como se muestra. A la toma DC IN 5V 4 Close the compartment. Insértelo con seguridad a fondo. Cierre el compartimiento. 2 Lift it up. Levantelo. When you record on a MiniDisc, check that the erase prevention tab is set to the “recordable” position. Recordable Para poder grabar 3 Recording prevented Para no poder grabar switch to Operation mode (LOCK). Mueva el selector de carga/ operación al modo de carga Mueva el selector de carga/ operación al modo de operación (LOCK). the battery charger. 4 Plug the AC adaptor. Enchufe el adaptador de CA. Inserte el MD portátil en el cargador de baterías. Before using the unit with a rechargeable battery, the battery has to be charged. Refer to “Using with the rechargeable battery”. Antes de emplear el aparato con una batería recargable, se deberá cargar la batería. Consulte el apartado de "Empleo con la batería recargable". Preparation for use Preparación para su utilización The unit does not work if the • / –HOLD button is set to HOLD. Este aparato no funciona si el botón • / –HOLD está puesto en HOLD. Red: To Right Rojo: A la derecha Press the • / –HOLD button for 2 seconds or more. Pulse el botón • /–HOLD durante 2 o más segundos. White: To Left Blanco: A la izquierda RIGHT LEFT 3 Move the Charge/Operation switch to Charge mode (RELEASE). 2 Insert the portable MD into Connection Conexión LINE OUT 1 Move the Charge/Operation (RELEASE). Cuando desee grabar en un minidisco, compruebe que la lengüeta de protección contra borrado esté colocada en la posición para "poder grabar". OPTICAL/ LINE IN Insert securely, all the way in. Hold Retención Released Liberación To a stereo system with “LINE OUT” or “AUDIO OUT” jacks (See left. Analog connection) Note: If the audio system has only one pair of jack then they are usually input only and recording via this connection is not possible. Operation mode A un sistema estéreo provisto de tomas de salida de línea "LINE OUT" o de salida de audio "AUDIO OUT" (Vea a la izquierda, Conexión analógica) Modo de operación Nota: Si el sistema de audio sólo tiene un par de tomas, normalmente son sólo de entrada y no puede realizarse la grabación mediante esta conexión. For operations Para operaciones Move it to operation mode when playing back or recording. Muévalo a la posición del modo de operación para la reproducción o grabación. CAUTION: It is not recommendable to put the MiniDisc into a rear pocket, as this may damage the product when sitting. PRECAUCIÓN: No se recomienda ponerse un minidisco en el bolsillo trasero del pantalón, porque podría dañarlo al sentarse. –8– MD-MT877/MD-MT877C Recording Grabación Check that the unit is connected to the stereo system. Compruebe que el aparato esté conectado al sistema estéreo. 4 Press the PAUSE button on the stereo system to enter the playback pause mode at the point you wish to start recording. Pulse el botón PAUSE del sistema estéreo para entrar en el modo de pausa de reproducción en el punto en el que desee iniciar la grabación. 5 Press the MODE button repeatedly to select the recording mode. Pulse repetidamente el botón MODE para seleccionar el modo de grabación. 6 Press the Pulse el botón button to start recording. para iniciar la grabación. 7 Begin playback on the stereo system, the output will be recorded. Inicie la reproducción del sistema estéreo, y se grabará la salida. 1 Press the REC button. To stop recording Press the • / :OFF button. 2 Begin playback on the stereo system connected to this unit. When recording stops, “TOC” appears (Table Of Contents). While “TOC” appears, the MiniDisc recorded contents have not yet been updated. Pulse el botón REC. Inicie la reproducción en el sistema estéreo conectado a este aparato. 3 Press the Para detener la grabación Pulse el botón • /:OFF. button to adjust the recording level. or Cuando se detenga la grabación, aparecerá “TOC” (índice). Mientras aparece “TOC”, aún no se habrá actualizado el contenido grabado en el MD. Adjust the recording level so that the maximum sound volume from the source makes the reading swing somewhere between –4 dB and 0 dB. Pulse el botón o para ajustar el nivel de grabación. Ajuste el nivel de grabación para que el volumen de sonido máximo de la fuente produzca una indicación de entre –4 dB y 0 dB. TOC display Visualización TOC Indicador del medidor de nivel 0dB 4dB Playing Reproducción 1 Insert the earphones plug firmly into the earphones jack on the remote control unit. Inserte firmemente la clavija de los auriculares en la toma de auriculares del controlador remoto. Enchufe el controlador remoto a la toma jack on the unit. del aparato. 3 Insert a MiniDisc. Inserte un MD 4 Press the Pulse el botón button. . To stop playback Press the • / :OFF button (Remote control: press the button). Para detener la reproducción Pulse el botón • /:OFF. (Controlador remoto: pulse el botón .) If the unit is not operated for at least 2 minutes while in the stop mode, the power will shut off automatically. Si el aparato no se utiliza durante un mínimo de 2 minutos en el modo de parada, la alimentación se desconectará automáticamente. The power turns off after recorded contents have been updated on the MiniDisc. Para actualizar el contenido grabado del MD Pulse el botón • /:OFF en el modo de parada. La alimentación se desconectará después de haber actualizado el contenido grabado en el MD. Level meter indicator 2 Plug the remote control into the To update the recorded contents of the MiniDisc Press the • / :OFF button while in the stop mode. –9– MD-MT877/MD-MT877C DISASSEMBLY Cares before disassembling When assembling the machine after disassembling or repair, observe the following requirements so as to ensure safety and performance. 1. Remove the batteries from the machine, and take out the mini-disc. 2. When assembling after repair, be sure to position the wires in the same location. Use the specified screws to fix the cabinet and the mechanism unit. The use of the screws with length other than specified may cause contact with the mechanism unit resulting in malfunction. 3. When repairing, pay close attention so not to damage the IC from static electricity. PROCEDURE FIGURE 1 Bottom Cabinet 1. Screw ..................... (A1) x5 10-1 2 Top Cabinet 1. Open the Top cabinet. 2. Screw ..................... (B1) x4 3. Flexible PWB .......... (B2) x1 10-1 3 Main PWB 1. Open the rechargeable battery compartment of the direction indicated by arrows. 2. Screw .................... (C1) x1 3. Flexible PWB ......... (C2) x2 10-2 1. Pull the main frame to the A direction and remove the MD mechanism upward. 2. Screw .................... (D1) x1 10-3 1. Screw ...................... (E1) x6 2. Hook ....................... (E2) x4 10-4 5 MD Mechanism LCD PWB (A1) x 1 ø 1.4 x 2 mm OOP PEE NN (B1) x 2 ø 1.4 x 2 mm Bottom Cabinet EN OP EJECT Knob (A1) x 1 ø 1.4 x 2 mm (A1) x 1 ø 1.4 x 2 mm Figure 10-1 10-2 (C2) x 1(1*) (B2) x 1 (C2) x 1 Main PWB Battery Cover pull (C1) x 1 ø 1.4 x 2.5 mm pull 2 1 EN 4 REMOVAL (A1) x 2 ø 1.4 x 2 mm OP STEP (B1) x 2 ø 1.4 x 2 mm Top Cabinet Main Frame Caution: Carefully handle the main PWB and flexible PWB. After removing the flexible PWB (1*) for the optical pickup from the connector, do not touch directly the front end of flexible PWB with your hand so as to prevent damage of optical pickup by static electricity. (E1) x 6 ø 1.4 x 2 mm Figure 10-2 MD Mechanism (E2) x 4 LCD PWB OP EN A Main Frame (D1) x 1 ø 1.4 x 1.5 mm Top Cabinet Figure 10-3 Figure 10-4 – 10 – MD-MT877/MD-MT877C REMOVING AND REINSTALLING THE MAIN PARTS Remove the mechanism according to the disassembling methods 1 to 4. (See Page 10.) How to remove the spindle motor (See Fig. 11-1.) 1. Remove the solder joints (A1) x 4 of flexible PWB. 2. Remove the screws (A2) x 3 pcs., and remove the spindle motor. (A2) x 3 ø 1.4 x 3 mm Spindle Motor How to remove the lift motor (See Fig. 11-2.) Solder joints (A1) x 4 1. Remove the solder joints (B1) x 2 of lift motor lead wire. 2. Remove the screw (B2) x 1 pc., and remove the lift motor. Note: Take care so that the motor gear is not damaged. (If the gear is damaged, noise is caused.) How to remove the sled motor (See Fig. 11-3.) 1. Remove the stop washer (C1) x 1 pc., and remove the drive gear (C2) x 1 pc. 2. Remove the screws (C3) x 2 pcs. 3. Remove the solder joints (C4) x 3 of flexible PWB., and remove the sled motor. Note: Take care so that the motor gear is not damaged. (If the gear is damaged, noise is caused.) MD Mechanism Figure 11-1 (B2) x 1 ø 1.4 x 3.8 mm How to remove the magnetic head (See Fig. 11-4.) Lift Motor 1. Remove the screws (D1) x 2 pcs. of the magnetic head and the optical pickup, and remove the solder joints (D2) x 2 pcs. of the head flexible plate. Note: Mount carefully so as not to damage the magnetic head. Solder Joints (B1) x 2 How to reinstall the optical pickup (See Fig. 11-4.) MD Mechanism 1. Remove the screw (E1) x 1 pc., and remove the grip spring. 2. Remove the screw (E2) x 1 pc. to remove the thrust spring, and remove the drive screw and the optical pickup from MD mechanism. Then, remove the drive screw from the optical pickup. Figure 11-2 (C3) x 2 ø 1.4 x 1.2 mm Sled Motor (E1) x 1 ø 1.4 x 1.8 mm Grip Spring Drive Screw (C1) x 1 (C2) x 1 (D1) x 2 ø1.4 x 1.8 mm (C4) x 3 Solder Joints (D2)x2 Solder Joints (E2) x 1 ø 1.7 x 3.5 mm Optical Pickup Magnetic head Thrust Spring MD Mechanism Figure 11-3 MD Mechanism Figure 11-4 – 11 – MD-MT877/MD-MT877C ADJUSTMENT Test disc MD adjustment needs two types of disc, namely recording disc (low reflection disc) and playback-only disc (high reflection disc). Type Test disc Parts No. 1 High reflection disc MMD-110 88GMMD-110 (TEAC Test MD) 2 Low reflection disc MMD-213A 88GMMD-213A (TEAC Test MD) 3 Low reflection disc Recording minidisc disc UDSKM0001AFZZ Note: Use the low reflection disc on which music has been recorded. Entering the TEST mode 1. Setting at port (in standby state, disc-free state or power nonconnected state) (1) Set the port as follows. TEST1 : "Low" TEST0 : "High" (2) Press the PLAY button in the standby state (it is allowed to close the disc lid or to connect the power supply). (3) Test Mode STOP [ T E S T _ ] 2. Setting by special button operation (in standby state) Test mode: Perform it with the remote control. (1) Press and hold the "PLAY MODE" button on the remote control and press the "PLAY" button. (2) Release only the "PLAY MODE" button. (3) Press and hold only the "PLAY" button and press the "VOLUME–" button. (4) Normal mode setting initialization (BASS setting, VOLUME setting, etc.) (5) Test Mode STOP [ T E S T _ ] (6) Press "VOLUME+" to check the microcomputer version. (7) Press "VOLUME–" to light up all the LCDs. Leaving the TEST mode Shipping setting method (1) Press the STOP button in the TEST mode stop state or version indicating state or whole LCD lighting state. (2) EEPROM rewrite-enable area updating. (3) Change to standby state (1) Insert the rechargeable battery. Do not close the compartment. (2) Close the battery lid twice in succession while pressing the VOLUME– button and the PLAY button on the main unit at the same time. (Turn on and off the power twice) (3) Make sure the display changes from [INIT] to [BYE OK]. Test Mode 1. AUTO 1 Mode 2. AUTO 2 Mode 3. TEST-PLAY Mode 4. TEST-REC Mode 5. MANUAL 1 Mode 6. MANUAL 2 Mode • Perform preliminary automatic adjustment. • If the combination of mechanism and pickup PWB has been changed, be sure to start from AUTO1. • Perform ATT (attenuator) automatic adjustment. • Perform continuous playback (error rate display, jump test) • Continuous playback from the specified address is performed. • 1 line, 10 lines or 100 steps manual jump is performed. • C1 error rate display (pit section), ADIP error rate display (groove section) • The temperature correction is performed only when servo start is performed, but the posture correction is not performed during continuous playback. • Continuous record from the specified address is performed. • Change of record laser output (servo gain is also changed according to laser output). • The temperature correction is performed only when servo start is performed, but the posture correction is not performed during continuous recording. • Temperature is displayed. • Seeing the displayed adjustment value, perform preliminary manual adjustment. (Error rate indication, jump test) 7. ERROR INFORMATION Mode 8. NORMAL Mode 9. EEPROM Mode – 12 – • Temperature is displayed. • Seeing the displayed adjustment value, perform ATT (attenuator) manual adjustment. • Continuous playback is performed (error rate display, jump test). • Error information is displayed. • Error information is initialized • The mode is changed from the TEST mode to the normal mode without adjustment. • In the normal mode the internal operation mode, memory capacity, etc. areindicated. • In the normal mode both temperature correction and posture correction are performed. • Factors of digital servo are changed manually. • Cut-off frequency of BASS1, BASS2 and BASS3 is selected manually. • Temperature detection terminal voltage is measured, and the reference value is set. • Defaults are selected and set. • Setting of EEPROM protect area is updated. MD-MT877/MD-MT877C Operation in each TEST mode 1. AUTO1 Mode 5. TEST-PLAY Mode • When the STOP button is pressed while the AUTO1 menu appears or during automatic adjustment, the mode changes to the TEST mode stop state. At this time the adjustment value is not output. • Be sure to adjust, using the specified disc MMD-213A. • Adjustment NG; Adjustment item out of range, focus ON failure, and adjustment error • When the PLAY button is pressed while ADJ. OK is displayed, AUTO2 is executed. • When the STOP button is pressed while the TEST-PLAY menu appears, or in TEST-PLAY or continuous playback mode, the mode changes to the TEST mode stop state. • When the PLAY button is pressed while the TEST-PLAY menu appears, continuous playback is initiated from the current pickup position. • Whenever the DISP button is pressed in the TEST-PLAY menu, the target address changes as follows. 0032 — 03C0 — 0700 — 08A0 — 0950— 0032 — When the PLAY button is pressed while a target address is displayed, continuous playback is performed after searching that address. • Each time the MODE button is pressed while the TEST-PLAY mode target address is displayed, the digit which is changed by pressing the FAST FORWARD/REVERSE button is changed as follows. 0032 — 0032 — 0032 — 0032 — • When the FAST FORWARD button is pressed in the TEST-PLAY mode target address is displayed, the digit of address specified by the MODE button is set to +1h. (0 to F) • When the FAST REVERSE button is pressed in the TEST-PLAY mode target address is displayed, the digit of address specified by the MODE button is set to -1h. (0 to F) * When the FAST FORWARD/REVERSE button is held down, the setting changes continuously, one cycle being 100 ms. • When the BASS button is pressed in the continuous playback mode, the number of jump lines changes as follows. 1 — 10 — 100 step — 1 * After the number of jump lines is indicated for one second, the address indication is restored. [ T R ] or [ 100 stp ] • When the FAST FORWARD button is pressed in the continuous playback mode, the specified number of lines is jumped in the FWD direction. • When the FAST REVERSE button is pressed in the continuous playback mode, the specified number of lines is jumped in the REV direction. * When the FAST FORWARD/REVERSE button is held down, jump is repeated every approx. 100 ms. 2. AUTO2 Mode • When the STOP button is pressed while the AUTO2 menu appears or during automatic adjustment, the mode changes to the TEST mode stop state. At this time the adjustment value is not output. • Adjustment NG; Adjustment item out of range, and adjustment error. • When the PLAY button is pressed while ADJ. OK is displayed, TEST _PLAY is executed. 3. MANUAL1 Mode • Adjustment item to be made in AUTO1 mode is performed manually. • When the VOLUME+ button is pressed during adjustment, the setting increases, and the new setting is output. • When the VOLUME– button is pressed during adjustment, the setting decreases and the new setting is output. • If the VOLUME+/– button is held down, the setting changes continuously with 100 ms cycle. *In this operation, the setting change is performed for each digit. The digit is changed by pressing the MODE button. • If the setting is within the allowable range, the RANDOM display lights. • When the STOP button is pressed during MANUAL1 menu or measurement or adjustment, the state is changed to the TEST mode stop state. 4. MANUAL2 Mode • Adjustment item to be made in AUTO2 mode is performed manually. • When the VOLUME+ button is pressed during adjustment, the setting increases, and the new setting is output. • When the VOLUME– button is pressed during adjustment, the setting decreases and the new setting is output. • If the VOLUME+/– button is held down, the setting changes continuously with 100 ms cycle. *In this operation, the setting change is performed for each digit. The digit is changed by pressing the MODE button. • If the setting is within the allowable range, the RANDOM display lights. • When the STOP button is pressed during MANUAL2 menu or measurement or adjustment, the state is changed to the TEST mode stop state. • When the PLAY button is pressed in B-ATT set state, the mode is changed to the continuous playback mode. • As for operation during continuous playback refer to "TEST-PLAY mode explanation". • Whenever the DISP button is pressed in the continuous playback mode, the indication changes as follows. * Pre-mastered disc Continuous playback (SUBQ address indication) | Continuous playback (C1 error indication) | Continuous playback (SUBQ address indication) * Recordabl disk Continuous playback (ADIP address indication) | Continuous playback (C1 error indication) | Continuous playback (ADIP error indication) | Continuous playback (ADIP address indication) – 13 – [ S Q ] [ C E ] [ S Q ] [ A P ] [ C E ] [ A E ] [ A P ] MD-MT877/MD-MT877C 6. TEST-REC Mode 7. NORMAL Mode • When the STOP button is pressed while the TEST-REC menu appears, or in the TEST-REC mode or continuous record mode, the mode changes to the TEST mode stop state. • Whenever the DISP button is pressed in the TEST-REC menu, the target address changes as follows. • When the STOP button is pressed while the NORMAL menu appears, the mode changes to the TEST mode stop state. • Indication during operation Indication of memory capacity on main unit LCD [ ] + Level meter : Internal mode : Address (Cluster section) : Address (Sector section) • Selection of sound volume, BASS, etc. is possible (without indication) • Recording is also possible. • If the STOP button is pressed during operation in the NORMAL mode, the NORMAL mode is cancelled, and the power is turned off. 0032 — 03C0 — 0700 — 08A0 —0950 — 0032 — When the PLAY button is pressed while a target address is displayed, continuous playback is performed after searching that address. • Whenever the MODE button is pressed in the TEST-REC mode target address is displayed, the digit which is changed by the FAST FORWARD/REVERSE button changes as follows. 0032 — 0032 — 0032 — 0032 — • When the FAST FORWARD button is pressed in the TEST-REC mode target address is displayed, the digit of address specified by the MODE button is set to +1h.(0 to F) • When the FAST REVERSE button is pressed in the TEST-REC mode target address is displayed, the digit of address specified by the MODE button is set to -1h. (0 to F) * When the FAST FORWARD/REVERSE button is held down, the setting changes continuously, one cycle being 100 ms. • When the VOLUME+/– button is pressed in the TEST-REC mode or continuous record mode, the laser record power changes. (Servo gain changes also according to record power.) * After the laser record power is indicated for one second, the ad] dress indication is restored. [ R P W _ • : Address • : Laser power cord • Operation is disabled if the premastered disc or disc is in miseraseprotected state. Explanation of error history code 8. Error data display Mode • Reversing when FAST REVERSE button is pressed • When the STOP button is pressed while the error data indication menu appears or during error data indication, the mode changes to the TEST mode stop state. • Error data 0 is the latest error. • Error which occurred in the TEST mode is also stored in the memory. • When the DISP button is pressed while the error data indication menu appears, the error data is initialized. [ C L E A R _ ] • : Error Code Error messages 13h : Adjustment servo retraction excessive retrial 16h : C. IN detection time-over 17h : A, B, E, F, and TCRSO offset measurement value out of tolerable range 21h : Focus retraction completion allowable time-over 23h : Track search completion allowable time-over 32h : P-TOC read failure 42h : U-TOC read failure 44h : U-TOC write data write disabled/read check error 45h : U-TOC write test failure 52h : SD write data write disabled 72h : EEPROM data read check sum error 73h : Record head drive disabled (by EJECT lever) 91h : Ambient temperature is higher that the allowable temperature – 14 – Can't READ The details ' ' 'f': Focus 'a': Servo adjustment 's': Track such 'r': TOC information reading 'u': UTOC information reading 'w': At the time of data writing 'p': Spindle start Er-MD The details ' ' '41': UTOC light test error '80': EEPROM information reading error MD-MT877/MD-MT877C EEPROM (IC402) writing procedure 1. Procedure to replace EEPROM and write initial value of microcomputer in EEPROM (1) Replace EEPROM. (2) Refer to the latest EEPROM data list. (3) Start the test mode. (Refer to page 12 "Entering the TEST mode".) (4) Version display (At the time of settlement of the test mode by the button operation.) [Ver. ] (7) Press the "BASS" button, and press 1 time the "FAST REVERSE" button. [ E E P R O M ] (8) Perform the operation to display "EEPROM SETTING MODE CHART", compare the EEPROM DATA LIST with the display, and set according to the EEPROM DATA LIST with the VOLUME+ or VOLUME– button. (9) Set the temperature reference. (Refer to the Temperature reference setting method.) (10) Set according to the EEPROM DATA LIST. (11) Press the STOP button. [ T E S T ] (12) Press the STOP button. (13) After data is written in EEPROM, turn off power . EEPROM version (c ~ z) Microcomputer ROM version (5) The whole LCD lights. (6) Test mode stop state. [ T E S T ] 2. Temperature reference setting method [1] Measurement, calculation and setting procedure (1) Set the TEST mode. (2) Start the EEPROM mode 'Temp' menu. • Button operation in order of BASS, FAST REVERSE x 1 time, PLAY, PLAY in the test mode STOP state. • 'TM$$%%' is displayed. ($$= Temperature code, %% = Temperature reference) (3) Once press FAST FORWARD, and determine the displayed microcomputer TEMP input AD value. • 'TPin##' is displayed. (## = TEMP input AD value) [2] Temperature measurement value correction table Ambient temperature Temperature correction + 8oC ~ +10oC +11oC ~ +13oC - 05h - 04h Center temperature + 9.1oC + 12.0oC +14oC ~ +16oC - 03h +17oC ~ +19oC - 02h +20oC ~ +22oC - 01h Temperature correction Center temperature + 14.9oC - 9oC ~ +10oC 08h + 0.5oC + 17.8oC + 3oC ~ +21oC + 23.6oC +26oC ~ +28oC + 01h + 26.9oC o o + 02h + 29.4oC o o + 03h + 32.3oC 07h + 12.0oC o o 06h + 23.6oC o o 05h + 35.0oC +15 C ~ +33 C + 20.7oC ± 00h +31 C ~ +33 C [3] Temperature code identification Check that the temperature code indicated after the servo control corresponds to the temperature limits below Ambient temperature +23oC ~ +25oC +29 C ~ +30 C (4) At the ambient temperature, determine the temperature corrected value from the temperature measurement value correction table. (5) Determine the temperature reference, using the following formula. • Temperature reference = Microcomputer TEMP input AD value + Temperature corrected value. (6) Set the temperature reference value by button operation, and check whether the temperature code indication corresponds to "Temperature Code Identification Table". +26 C ~ +43 C – 15 – MD-MT877/MD-MT877C EEPROM DATA LIST (EEPROM version C) Fucus setting Spindle setting Item display FG1 _ Item display Set values 44H SPG _ Set values 30H FG2 _ FF0 _ 70H 10H SPi _ SPm _ 9AH 62H FF1 _ FF2 _ 70H E8H SPo _ PGM _ 4FH E0H Ff0 Ff1 _ _ 10H 48H SP1 _ SP2 _ 10H 60H Ff2 _ FZH _ EAH EDH SP3 _ SP4 _ F2H F2H FLn _ FLp _ 09H 06H SP5 _ Sp2 _ 10H 60H DJG _ FSS _ 0FH 28H Sp5 _ SD1 _ 10H 7FH FTS _ FSB _ 18H 40H SD2 _ SPK _ 7FH EBH FTB _ FGM _ 38H 66H MPG _ SPL _ 28H 60H TVG _ TO1 _ 84H 50H SPW _ SPB _ 0FH 66H TO5 _ TOR _ 58H 58H SRi _ SRm _ C0H 9AH SRo _ 7BH Tracking setting Item display TG1 _ TG2 _ Sled setting Set values 14H 2AH Item display SKS _ Set values 7FH TF0 _ TF1 _ 10H 70H SKL _ SLC _ 7FH 24H TF2 _ Tf0 _ E0H 10H STL _ STM _ 07H 42H Tf1 Tf2 _ _ 40H E4H STE _ SDV _ A6H 60H TFS _ TBo _ 00H 20H SJP _ WTm _ 03H 18H TBt _ TKo _ 12H 20H SRV _ SLT _ 54H 5CH TKt _ TDo _ 0DH 67H MVS _ SLS _ 0AH 28H TDt _ SCo _ 34H 00H SKE _ SDE _ 0EH 1CH SCt _ SCm _ 3AH 48H CLp _ CLr _ 24H 30H JPI _ K10 _ 0EH 65H THP _ THG _ 02H 02H TOP _ TOG _ 00H F4H T1P _ 20H – 16 – MD-MT877/MD-MT877C Control setting BASS setting Item display B1A _ B1B _ Item display Set values 3FH 00H B1C _ B2A _ 00H 1FH B2B _ B2C _ 00H 00H B3A _ B3B _ E2H 00H B3C _ 00H CT0 _ ADJ.SET setting Item display COK _ Set values 28H FAT _ TAT _ C0H 3EH CAT _ FAB _ 40H H Digital EQ setting Item display HQ1 _ HQ2 _ Set values 90H 90H Set values 02H CT1 _ CT2 _ 01H 30H CT3 _ CT4 _ 20H D0H CT5 _ CT6 _ 4BH 18H RC0 _ RC1 _ C0H FEH SYC _ PWL _ A6H 54H DR1 _ DR2 _ 24H 22H IN1 _ IN2 _ 17H 11H INH _ DRH _ 00H 64H PLE _ RCE _ A6H 94H ELT _ X2T _ A0H C0H SDF _ CHV _ 1FH 50H HSG _ HSO _ 11H FDH DRS _ DUP _ 5AH 00H LQ1 _ LQ2 _ 90H 90H RFL _ CG1 _ D0H 66H LSG _ LSO _ 11H 00H FB0 _ RST _ FCH 00H GQ1 _ GQ2 _ 98H 84H R20 _ R21 _ 80H 20H GSG _ EQP _ 11H 00H R40 _ R41 _ BFH 02H FBL _ MC2 _ 16H 00H MC4 _ L2H _ 00H 81H L4H _ SPM _ 80H 00H MSL _ US0 _ 80H 00H US1 _ US2 _ 00H 00H – 17 – MD-MT877/MD-MT877C Do the following when replacing the mechanism, the pickup, the EEPROM (IC402), the LSI(IC201) or the main PWB unit. Enter the test mode, move the pickup to the most internal periphery and execute AUTO1. (Use the disc of MMD-213A.) AUTO1 PLAY (During the spare style automatic adjustment) AT1 Normality completion ADJ.OK PLAY (During the adjustment that ATT is automatic) AT2 Normality completion ADJ.OK Remote controller P-MODE button (During the focus balance adjustment) The indication of RAMDOM (Adjustment completion) STOP is pushed The indication of "TEST" Move the pickup to the most internal periphery and press the BASS button (Fast Forward Button) AUTO2 It is made to carry it out PLAY ADJ.OK PLAY (Continuance is regenerating) It confirms that an address proceeds AP#### STOP is pushed BYE OK Indication disappears All the supply of the power supply is turned off (In such cases as the battery) If you replaced EEPROM, set the EEPROM valume to the final version. Test Mode Start · Completion methool • Starting method of the test mode When the unit is in the stand-by state (with no display), the test mode is started by performing the following operation using the remote control. Press the [PLAY] button while pressing the [PLAY-MODE] button, and release the [PLAY-MODE] button while keeping the [PLAY] button pressed, and press the [VOLUME–] button. Indication after the start : TEST : To the test mode stop ([Test mode menu]) Performance mode Playback volume LINE REC volume Microphone REC volume Resume setting Volume+ =Normal =28 =30 =20 =Cancellation : Version indication 2 seconds EEPROM version Destination Volume - All the lighting Program version : LCD all the lighting two seconds • How to cancel the test mode TEST : Test mode stop STOP BYE BYE OK POWER OFF : [OK] or [NG] Check the microcomputer RAM and EEPROM with the contents of the preliminary adjustment. Pickup position initialisation EEPROM contents renewal – 18 – MD-MT877/MD-MT877C Change of Tset Mode Menus BASS TEST : Test mode stop SKIP DOWN SKIP UP Slide external periphery move Slide internal periphery move SKIP DOWN AUTO1 : Pre-automatic adjustment menu SKIP UP SKIP DOWN AUTO2 SKIP UP T SKIP DOWN PLAY SKIP UP T : ATT auto adjustment menu : Continuous playback menu SKIP DOWN REC SKIP UP : Continuous record menu SKIP DOWN MANU1 SKIP UP : Pre-manual adjustment menu SKIP DOWN MANU2 SKIP UP : ATT manual adjustment menu SKIP DOWN RSLT1 SKIP UP : Pre-adjustment value check menu SKIP DOWN : ATT adjustment value check menu RSLT2 SKIP UP SKIP DOWN : Digital input signal monitor menu DinMon SKIP UP E SKIP DOWN DATA SKIP UP : Error history display menu SKIP DOWN NORMAL SKIP UP : Test mode normal play menu SKIP DOWN EEPROM : EEPROM setting menu SKIP UP * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. * When the [VOLUME+] button is pressed in the "TEST MODE STOP" state, the program version is displayed for 2 seconds * When the [VOLUME–] button is pressed in the "TEST MODE STOP" state, all the displays appear for 2 seconds. Servo Preautomatic Adjustment AUTO1 : Preautomatic adjustment menu Adjustment error PLAY AT1 : During preautomatic adjustment Adjustment error Normal end ADJ. NG ADJ. OK : Preadjustment error (adjustment value output) : Preadjustment normal end (adjustment value output) PLAY AT2 : During ATT automatic adjustment * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. * Move the pickup lens manually to the innermost periphery before performing the servo preliminary auto adjustment. (Refer to "Change of test mode menus" for the operation method.) *" " is the internal processing number, the meanings of the numbers are as follows. 0 0 : Initial setting 0 2 : ABEF input offset measurement 0 4 : AB input (ABMAXO) level setting 0 5 : Focus ATT tentative setting 0 6 : Pit section EF input level setting 0 7 : COUT level setting for pit section adjustment 0 8 : Sled external periphery move 0 9 : Groove section EF input level setting 1 0 : COUT level setting for groove section adjustment 1 1 : TCRS input level setting 1 2 : Tracking ATT initial setting 1 3 : AB input (LPFABO) level setting 1 4 : Focus ATT initial setting 1 6 : TCRS input offset measurement * It is necessary for each test mode where servo operation is made to complete the preliminary adjustment. (Otherwise, "ErADJ." appears.) * The preliminary adjustment complete state is stored on the EEPROM (protected field). – 19 – MD-MT877/MD-MT877C Servo ATT Auto Adjustment AUTO2 : ATT auto adjustment menu PLAY AT2 : During ATT auto adjustment Adjustment error Normal end ADJ. NG : ATT adjustment error (adjustment value output) : ATT adjustment error (adjustment value output) ADJ. OK PLAY SQ#### AP#### : Continuous playback (high reflection) : Continuous playback (low reflection) * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. * Move the pickup lens manually to the innermost periphery before performing the servo ATT auto adjustment. (Refer to "Change of test mode menus" for the operation method.) *" " represent the adjustment number as follows. 0 0 : Initial setting 0 3 : Pit section tracking ATT setting 0 4 : Pit section focus ATT setting 0 6 : Sled external periphery move (low reflection only) 0 7 : TCRS ATT setting (low reflection only) 0 8 : Groove section tracking ATT setting (low reflection only) 0 9 : Groove section focus ATT setting (low reflection only) Continuous Playback • Continuous playback from current pickup position T : Continuous playback menu PLAY PLAY NO AUTO1 Practice finish? ErADJ YES NO AUTO2 Practice finish? YES YES AUTO2 Practice No error? NO A D J. N G SQ#### AP#### SQ : Continuous playback (pit section) AP : Continuous playback (groove section) # # # # : Address • Continuous playback from any address T PLAY : Continuous playback menu DISP Ad 0 0 3 2 : Start address setting PLAY SQ#### AP#### : Continuous playback (pit section) : Continuous playback (groove section) # # # # : Address * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. * In the start address set state the start address changes as follows when the [DISP] button is pressed. 0 0 3 2 H (initial value) 03C0H 0700H 08A0H DISP DISP Ad0 3 C 0 Ad0 0 3 2 DISP Ad0 7 0 0 Ad0 8 A 0 0950H Ad0950 DISP * In the start address setting state the start address change digit changes when the [P-MODE] button is pressed. 1st digit (initial value) 2nd digit 3rd digit MODE Ad0 0 5 0 MODE Ad0 0 50 Ad0 0 50 MODE * In the start address set state the value of selection digit changes in the range of "0h to Fh" when the [FAST FORWARD/REVERSE] button is pressed * If the [P-MODE] button is pressed in the continuous playback state, the mode is changed to the B-ATT setting state of the ATT manual adjustment. : Continuous playback (pit section) SQ#### : Continuous playback (groove section) # # # # : Address AP#### P-MODE HB LB : High-reflection pit section B-ATT (focus) setting : Low-reflection groove section B-ATT (focus) setting : ATT setting – 20 – MD-MT877/MD-MT877C * In the continuous playback state the number of jump lines changes as follows shown the [BASS] button is pressed. 1 (initial value) 10 1TR BASS BASS 10TR 100stp 100s tep BASS * When the [FAST FORWARD] button is pressed in the continued playback mode, jump of specified number of lines occurs in the external periphery direction. If the key is held down jump occurs continuously (100 ms cycle). * When the [FAST REVERSE] button is pressed in the continuous playback mode, jump of specified number of lines occurs in the internal periphery direction. If the key is held down, jump occurs continuously (100 ms cycle). • Focus balance Adjustment mode T-PLAY Each indication : Continuous playback menu PLAY b### : Focus balance Adjustment mode : Focus balance # # # : Jitter error DISP Others indication * The focus balance adjustment mode is available only for low reflection discs. * The RANDOM marker lights up in the focus balance adjustment mode. * The focus balance ( ) can be changed by the VOL UP/DOWN button operation. * If the PLAY button is pressed in the focus balance adjustment mode, the unit returns to the continuous playback mode. Continuous Record Enter the EEPROM setting mode, and press the FAST FORWARD button. Change the MSL setting value from 00 to 08 by using CTRL_ (control setting menu). (If the MSL remains in 00, no signal is recorded.) • Continuous record from the current pickup position T : Continuous record menu REC PLAY AUTO1 Practice finish? NO ErADJ YES AUTO2 Practice finish? NO AUTO2 Practice YES YES No error? NO AP#### A D J. N G : Continuous record # # # #: Address • Continuous record playback from any address T REC : Continuous record menu DISP Ad 0 0 3 2 : Start address setting PLAY AP# # # # : Continuous record # # # #: Address * When the [STOP] button is pressed in specific condition, the "TEST MODE STOP" state is set. * In the start address set state the start address changes as follows when the [DISP] button is pressed. 0 0 3 2 H (initial value) 03C0H 0700H 08A0H DISP DISP DISP Ad0 0 3 2 Ad0 3 C 0 Ad0 7 0 0 Ad0 8 A 0 0950H Ad0950 DISP * In the start address setting state the start address change digit changes when the [P-MODE] button is pressed. 1st digit (initial value) 2nd digit 3rd digit MODE MODE Ad0 0 50 Ad0 0 5 0 Ad0 0 5 0 MODE * In the start address set state the value of selection digit changes in the range of 0h to Fh when the [FAST FORWARD/REVERSE] button is pressed. * In the continuous record state and start address set state the record laser power changes in the range of "0h to Fh" when the [VOLUME +/–] button is pressed. (Initial value 0DH) – 21 – MD-MT877/MD-MT877C Servo Pre-Manual Adjustment MANU1 : Pre-Manual Adjustment menu PLAY TMP SKIP UP : Temperature code indication $ $ : Temperature code $ $ SKIP DOWN : A signal offset (AINO) measurement : Measurement value Ah SKIP UP SKIP DOWN : B signal offset (BINO) measurement : Measurement value Bh SKIP UP SKIP DOWN : E signal offset (EINO) measurement : Measurement value Eh SKIP UP SKIP DOWN : F signal offset (FINO) measurement : Measurement value Fh SKIP UP LON SKIP UP SKIP DOWN : Laser ON (play power) P SKIP DOWN : AB signal level measurement (ABMAXO) : Measurement value AB SKIP UP SKIP DOWN : A-ATT (focus) tentative setting : ATT setting Sa SKIP UP SKIP DOWN : B-ATT (focus) tentative setting : ATT setting Sb SKIP UP SKIP DOWN : Pit section EF signal level measurement (LPFEFO) : Measurement value ef SKIP UP SKIP DOWN : Pit section adjustment COUT level setting : COUT level setting PCH SKIP UP SKIP DOWN : Groove section EF signal level measurement (LPFEFO) : Measurement value ef SKIP UP SKIP DOWN : Groove section adjustment COUT level setting : COUT level setting GCH SKIP UP SKIP DOWN : TCRS signal level measurement (TCRSMIO) : Measurement value TC SKIP UP SKIP DOWN : E-ATT (tracking) initial setting : ATT setting SE SKIP UP SKIP DOWN : F-ATT (tracking) initial setting : ATT setting SF SKIP UP SKIP DOWN : AB input level measurement (LPFABO) : Measurement value ab SKIP UP SKIP DOWN : A-ATT (focus) initial setting : ATT setting SA SKIP UP SKIP DOWN : B-ATT (focus) initial setting : ATT setting SB SKIP UP SKIP DOWN : TCRS signal offset (TCRSO) measurement : Measurement value TH * When the [STOP] button is pressed in specific condition, the "TEST MODE STOP" state is set. * If the [BASS] button is pressed in the laser ON state (with no disc or the lid open), laser power changes as follows. Play back Record power Maximum power BASS BASS 1 (initial value) 10 384 LON P LON R LON M BASS * In the specific setting display state the setting change digit changes when the [P-MODE] button is pressed. • In the case of the setup value two digits. 1st digit (initial value) 2nd digit P-MODE P-MODE • In the case of the setup value three digits. 1st digit (initial value) 2nd digit 3nd digit P-MODE P-MODE P-MODE * In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/–] button is pressed. * If the [DISP] button is pressed, the display changes as follows. – 22 – MD-MT877/MD-MT877C • ABMAXO measurement value Sa Sb : A-ATT (focus) tentative setting : B-ATT (focus) tentative setting DISP DISP : ABMAXO measurement value indication "1" Mark lighting AB • LPFABO measurement value : A-ATT (focus) tentative setting : B-ATT (focus) tentative setting SA SB DISP DISP : LPFABO measurement value indication "1" Mark lighting ab • LPFEFO measurement value : Pit section adjustment COUT level setting : Group section adjustment COUT level setting PCH GCH DISP DISP : LPFEFO measurement value indication "1" Mark lighting ef • LPFEINO/EFMIO measurement value SE : E-ATT (tracking) initial setting DISP : LPFEINO measurement value indication "1" Mark lighting e i DISP DISP EF : EFMIO measurement value indication "REPEAT", "1" Mark lighting • LPFFINO/EFMIO measurement value : F-ATT (tracking) initial setting SF DISP : LPFFINO measurement value indication "1" Mark lighting f i DISP DISP EF : EFMIO measurement value indication "REPEAT", "1" Mark lighting Servo ATT Manual Adjustment MANU2 : ATT manual adjustment menu PLAY TMP SKIP UP LON SKIP UP $ $ SKIP DOWN P : Pit section E-ATT (tracking) setting : ATT setting SKIP DOWN : Pit section F-ATT (tracking) setting : ATT setting PF SKIP UP SKIP DOWN : High reflection A-ATT (focus) setting : Low reflection A-ATT (focus) setting : ATT setting HA La SKIP UP SKIP DOWN : High reflection B-ATT (focus) setting : Low reflection B-ATT (focus) setting : ATT setting HB Lb SKIP UP SKIP DOWN GC SKIP UP :Groove section E-ATT (tracking) setting : ATT setting SKIP DOWN :Groove section F-ATT (tracking) setting : ATT setting GF SKIP UP SKIP DOWN : Low reflection A-ATT (focus) setting : ATT setting LA SKIP UP : TCRS ATT setting : ATT setting SKIP DOWN GE SKIP UP : Laser ON (play power) SKIP DOWN PE SKIP UP : Temperature code indication $ $ : Temperature code SKIP DOWN : Low reflection B-ATT (focus) setting : ATT setting * When the [STOP] button is pressed in specific condition, the "TEST MODE STOP" state is set. * If the [PLAY] button is pressed in the B-ATT setting state, the mode is changed to the continuous playback mode. And if the [P-MODE] button is pressed in the continuous playback state, the mode is changed to the B-ATT setting state of the ATT manual adjustment. LB – 23 – MD-MT877/MD-MT877C g j HB Lb LB : High-reflection pit section B-ATT (focus) setting : Low-reflection pit section B-ATT (focus) setting : Low-reflection groove section B-ATT (focus) setting : ATT setting PLAY P-MODE : Continuous playback (pit section) : Continuous playback (groove section) # # # # : Address SQ#### AP#### * If the [BASS] button is pressed in the laser ON state (with no disc or the lid open), laser power changes as follows. Playback power Record power Maximum power BASS LON BASS LON P R LON M BASS * In the specific setting display state the setting change digit changes when the [P-MODE] button is pressed. 1st digit (initial value) 2nd digit 3rd digit P-MODE P-MODE MODE * In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/-] button is pressed. * If the [DISP] button is pressed, the display changes as follows. • LPFABO measurement value : High-reflection pit section A-ATT (focus) setting : High-reflection pit section B-ATT (focus) setting : Low-reflection pit section A-ATT (focus) setting : Low-reflection pit section B-ATT (focus) setting : Low-reflection groove section A-ATT (focus) setting : Low-reflection groove section B-ATT (focus) setting HA HB La Lb LA LB DISP DISP : LPFABO measurement value indication "1" Mark lighting ab • TCRSMIO measurement value : TCRS ATT setting GC DISP DISP : TCRSMIO measurement value indication "1" Mark lighting TC • LPFEINO/EFMIO measurement value PE GE : Pit section E-ATT (tracking) setting : Groove section E-ATT (tracking) setting DISP : LPFEINO measurement value indication "1" Mark lighting e i DISP EF DISP : EFMIO measurement value indication "REPEAT", "1" Mark lighting • LPFFINO/EFMIO measurement value : Pit section F-ATT (tracking) setting : Groove section F-ATT (tracking) setting PF GF DISP : LPFFINO measurement value indication "1" Mark lighting f i DISP EF DISP : EFMIO measurement value indication "REPEAT", "1" Mark lighting – 24 – MD-MT877/MD-MT877C Servo Pre-adjustment Value Check RSLT1 : Pre-adjustment Value Check menu PLAY AH SKIP UP : A signal offset measurement value (setting) SKIP DOWN BH SKIP UP : B signal offset measurement value (setting) SKIP DOWN EH SKIP UP : E signal offset measurement value (setting) SKIP DOWN FH SKIP UP : F signal offset measurement value (setting) SKIP DOWN TH SKIP UP : TCRS signal offset measurement value SKIP DOWN ef SKIP UP : EF signal measurement value SKIP DOWN TC SKIP UP : TCRS signal measurement value SKIP DOWN ab SKIP UP : AB signal input measurement value SKIP DOWN PCH SKIP UP : Pit section adjustment COUT level setting SKIP DOWN GCH SKIP UP : Groove section adjustment COUT level setting SKIP DOWN SA SKIP UP : A-ATT (focus) initial setting SKIP DOWN SB SKIP UP : B-ATT (focus) initial setting SKIP DOWN SE SKIP UP : E-ATT (tracking) initial setting SKIP DOWN SF : F-ATT (tracking) initial setting * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. * In the specific setting display state the setting change digit changes when the [P-MODE] button is pressed. • In the case of the setup value two digits. 1st digit (initial value) 2nd digit P-MODE P-MODE • In the case of the setup value three digits. 1st digit (initial value) 2nd digit 3nd digit P-MODE P-MODE P-MODE * In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/–] button is pressed. – 25 – MD-MT877/MD-MT877C Error History Display • Error history clear E DATA : Error history indication menu After one second DISP CLEAR : Error history clear • Error history indication E DATA : Error history indication menu PLAY : Error history 0 indication $ $ : Error code E0$$ SKIP UP SKIP DOWN : Error history 1 indication $ $ : Error code E1$$ SKIP UP SKIP DOWN : Error history 2 indication $ $ : Error code E2$$ SKIP UP SKIP DOWN : Error history 3 indication $ $ : Error code E3$$ SKIP UP SKIP DOWN : Error history 4 indication $ $ : Error code E4$$ SKIP UP SKIP DOWN : Error history 5 indication $ $ : Error code E5$$ SKIP UP SKIP DOWN : Error history 6 indication $ $ : Error code E6$$ SKIP UP SKIP DOWN : Error history 7 indication $ $ : Error code E7$$ SKIP UP SKIP DOWN : Error history 8 indication $ $ : Error code E8$$ SKIP UP SKIP DOWN : Error history 9 indication $ $ : Error code E9$$ SKIP UP SKIP DOWN RC : Total recording time * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. ATT Setting Check RSLT2 : ATT Setting Check menu PLAY PE SKIP UP : Pit section E-ATT (tracking) setting SKIP DOWN PF SKIP UP : Pit section F-ATT (tracking) setting SKIP DOWN GE SKIP UP : Groove section E-ATT (tracking) setting SKIP DOWN GF SKIP UP : Groove section F-ATT (tracking) setting SKIP DOWN HA SKIP UP : High-reflection A-ATT (focus) setting SKIP DOWN HB SKIP UP : High-reflection B-ATT (focus) setting SKIP DOWN : Low-reflection A-ATT (focus) setting LA SKIP UP SKIP DOWN LB SKIP UP : Low-reflection B-ATT (focus) setting SKIP DOWN GC : TCRS-ATT setting * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. * In the specific setting display state the setting change digit changes when the [P-MODE] button is pressed. • In the case of the setup value three digits. 1st digit (initial value) 2nd digit 3nd digit P-MODE P-MODE * In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/–] button is pressed. – 26 – MD-MT877/MD-MT877C Test Mode Normal Playback NORMAL : Test mode normal playback menu PLAY : Normal playback mode @@@@@@: Mode and address indication @@@@@@ * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. EEPROM Setting • Menu transition EEPROM : EEPROM setting menu PLAY SKIP DOWN Temp SKIP UP Focus SKIP UP : Focus setting menu SKIP DOWN Track SKIP UP : Tracking setting menu SKIP DOWN Spin : Spin setting menu SKIP UP SKIP DOWN Sled : Sled setting menu SKIP UP SKIP DOWN Bass : BASS setting menu SKIP UP SKIP DOWN : Adjustment setting menu ADJSET SKIP UP SKIP DOWN DEQSET SKIP UP : Digital EQ setting menu SKIP DOWN CTRL SKIP UP SKIP UP LSI : TEMP setting menu SKIP DOWN : Control setting menu SKIP DOWN : LSI setting TEST mode menu IF * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. • TEMP Setting Temp : Temp setting menu PLAY TM$$ SKIP UP SKIP DOWN T P i n : TEMP standard value setup : Setup value $ $ : Temperature code : TEMP A/D input value indication * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. * When the [DISP] button operation is performed in the specific state, the menu changes to "TEMP SETTING menu". * When the [P-MODE] button is pressed in each state, the set digit is changed. 1st digit (initial value) 2nd digit P-MODE P-MODE * In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/–] button is pressed. • Setup except for TEMP Each setup menu : Each setup menu except for TEMP PLAY Setup item : Each setup item except for TEMP : Setup value * When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set. * When the [DISP] button operation is performed in the specific state, the menu changes to "TEMP SETTING menu". * In the specific setting display state the setting change digit changes when the [P-MODE] button is pressed. 1st digit (initial value) 2nd digit P-MODE P-MODE * In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/–] button is pressed. – 27 – MD-MT877/MD-MT877C NOTES ON SCHEMATIC DIAGRAM • Resistor: To differentiate the units of resistors, such symbol as K and M are used: the symbol K means 1000 ohm and the symbol M means 1000 kohm and the resistor without any symbol is ohm-type resistor. Besides, the one with “Fusible” is a fuse type. • Capacitor: To indicate the unit of capacitor, a symbol P is used: this symbol P means pico-farad and the unit of the capacitor without such a symbol is microfarad. As to electrolytic capacitor, the expression “capacitance/withstand voltage” is used. (CH), (TH), (RH), (UJ): Temperature compensation (ML): Mylar type • The indicated voltage in each section is the one measured by Digital Multimeter between such a section and the chassis with no signal given. • Parts marked with “ ”( ) are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set. DESCRIPTION REF. NO SW401 EJECT OFF—ON SW901 DISC PROTECT OFF—ON SWA01 RECORD OFF—ON SWA02 PLAY OFF—ON SWA03 BASS OFF—ON SWA04 EDIT OFF—ON SWA05 DISPLAY OFF—ON SWA06 VOLUME – OFF—ON SWA07 VOLUME + OFF—ON SWA08 STOP OFF—ON SWA09 MODE OFF—ON SWA10 FAST REVERSE OFF—ON SWA11 FAST FORWARD OFF—ON SWA12 ENTER OFF—ON SWA13 OPEN/CLOSE OFF—ON TYPES OF TRANSISTOR AND DIODE TOP VIEW TOP VIEW B (G) (3) E (S) 1 TOP VIEW C (D) (2) 1 6 2 5 3 4 RN4904 RN4911 F10J2E 2SA17457 2SA1832 GR 2SC4738 GR 2SD1979 S DTC144 EE RN1104 RN1444 A 2 3 1 FDN339 N TOP VIEW TOP VIEW TOP VIEW HRB0103B 1SS372 1SS361 SBE803 TOP VIEW 1 6 1 8 1 6 2 5 2 7 5 4 2 3 3 4 6 5 3 4 FDG312 P FTD2017 – 28 – POSITION HN1C01 FU – 29 – Figure 29 BLOCK DIAGRAM M902 SLED MOTOR 39,41,43 27,31, 40,45 VM IC601 MOTOR DRIVE BD6640KV PLAYBACK SIGNAL RECORD SIGNAL 7,10,12 55,60 +2.5V 29,40 IC402 EEPROM 58X2404T IC404 GATE IC N7SZ86P5 IC431 RESET S-80820LNP 1-3,17,27,52,64 2 1 8 66 2,5 76 59 1-11,36,38, 73,74,93 68 2,5,6,7 KEY UNIT SWA01-13 1-3 31-33 40,47, 48,81, 91,92 96-99 4,7 49,72 4 SW901 DISC PROTECT 12,53,54,62 SW401 EJECT 2 +B 14,51,62 +1.5V 74 73 2.5V REGULATOR IC200 62GR2522 82-84,86, 89-100 IC401 SYSTEM MICROCOMPUTER IX0419AW AVCC +2.5V 17-22, 24,25 LR378161 3 ENDEC/SERVO/ATRAC IC201 57,58 26-30, 32-37, 39-46 2-5,7-11 14-23 2 R-CH 2 5 +2.3V +2.35V 5 VCC 9,16 1 (-1.5V) 2 2 2 VCC IC822 IR3M14N DC/DC CONVERTER IC821 CPH3413 N-CH MOS FET IC842 62GR2522 2.5V REGULATOR +2.7V 5,6 VEE 17 L-CH 2 R-CH 3 Q721 RIPPLE FILTER 3 2 3 4 5,6 F841 0.4A,DC 60V IC271 FT75S54FU OP AMP. IC251 S-80808LNP RESET 1-2V IC801 S-80814ALNP RESET Q251-Q254,Q261 Q801,Q802,Q821 IC871 TC7S86FU EXCLUSIVE OR GATE L-CH R-CH BATTERY TERMINAL EXTENSION TERMINAL IC873 62GR4522 4.5V REGULATOR IC841 XC6372C281PR 2.8V UP CONVERTER 1 17 8 24 L-CH 22 R-CH -2.7V 6,19 VEE IC703 AUDIO AMP. IR3R59N VCC 20 IC701 AUDIO AMP. IR3R54N (+1.5V) IC852 IR3M14N DC/DC CONVERTER IC851 CPH3413 N-CH MOS FET 2.3V REGULATOR IC771 62GR2322 5 3 L-CH IC501 8 AD/DA 9 CONVERTER 16 R-CH 4 AK4551VT 15 L-CH 21 10 12 5 6 L-CH R-CH J703 REMOTE CONTROL TERMINAL M T IC101 RF SIGNAL 37 PROCESSOR IR3R58M 50 +2.7V 1,12 OPTICAL +2.7V J703 EARPHONES TERMINAL M901 SPINDLE MOTOR M F 1-2 +2.7V 2,3 IC202 IX2824AF 16M BIT D-RAM J702 MIC IN (READY FOR J701 LINE IN PLUG/IN POWER) PICK +2.5V +2.7V VS VCC OPIC LASER HEAD HEAD DRIVE IC351 74ACT02FT IC354 CPH5608 IC353 FTD2005 +2.7V 1 VCC IC651 MOTOR DRIVE LB1938T J701 OPTICAL IN M903 LIFT MOTOR M 6,7 MD-MT877/MD-MT877C MD-MT877/MD-MT877C +B TP202 TP139 L103 LDVAR LDON OPICGA TP113 TP114 TP115 TP116 TP117 TP118 TP119 TP120 TP121 TP105 TP106 TP107 TP108 TP109 TP110 TP111 TP101 TP102 TP103 C 15 C121 220P 9 TP487 RAA11 RAD0 RAD1 RAWEX RARASX RAA9 RAD3 RAD2 RACASX DGND RAOEX RAA8 RAA7 RAA6 SLDRR RAA5 SPDRF RAA4 SPDRR VDD2 RAA3 RAA10 RAA2 RAA0 RAA1 ACRCER PLCK EFMO X700KO TCRS 48 49 50 51 52 IC201 LR378161 ENDEC/SERVO /ATRAC 23 24 25 26 27 1 EFMMON 2 AVCC 98 SYWRX 99 SYRDX 100 SYRS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 +1.5V TP201A TP201 TP206 C207 0.1 R206 100K R205 27K L171 10µH LDVAR LDON DGND DGND VCC B A COM CVCC MP/R RF2 AGND VCC RF4 RF3 E F RF1 T+ F+ T– F– ADDATA DADATA FEMON TOTMON TEMON HDON EFMO TP205 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 CK224 TP203 CK222 1 2 3 4 5 6 TP200 VCCDRAM 73 74 75 76 77 78 2 22 LDCNT2 LDCNT1 DFCK BCLK LRCK DGND PLLBVC DOUT DIN X1O X1I DGND VDD1 VPO VXI EMPH LDCNT2 LDCNT1 LEDON1 DILOCK TEST1 TEST0 OPTCNT DAPON ADPON FOK SENSE COUT MCCK DINTX VDD2 DGND RSTX SYSD0 SYSD1 SYSD2 SYSD3 SYSD4 SYSD5 SYSD6 SYSD7 +B 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 CN101 1 R101 22K R161 1.2K C165 0.033 TP122 C124 330P R102 22K 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 76 77 78 79 80 81 FOK CK204 82 SENSE CK205 83 CIN CK206 84 85 DINT C203 86 0.1 87 R204 88 1K XRT 89 SYD0 90 SYD1 91 SYD2 92 SYD3 93 SYD4 94 SYD5 95 SYD6 96 SYD7 97 SYWR 98 SYRD 99 SYRS 100 TP209 TP210 1 2 3 L100 10µH GND I/O4 I/O3 CAS OE A9 24 23 22 21 20 19 7 A10 8 A0 9 A1 10 A2 11 A3 12 VCC C202 47/6.3 A8 A7 A6 A5 A4 GND 18 17 16 15 14 13 IC202 IX2824A 16MBIT D-RAM L202 10µH 6 5 4 VCC2R5V Q103 FDG312 P C151 0.01 +B TP105A VCC I/O1 I/O2 WE RAS N.C. 12 C201 10/6.3 TP100 TP212 CK225 SPDRF SPDRR R103 22K +B C204 0.47 XL201 33.8688MHz C100 10/6.3 TP211 TP208 TP207 R139 39K C133 0.22 C211 5P(CH) CK207 X176KO FODRF FODRR TRDRF TRDRR 4 3 TEMP L204 TP204 C205 0.1 SGAIN 25 IC101 IR3R58M RF SIGNAL PROCESSOR T– T+ F+ F– 10 R222 1M C212 8P(CH) EFMI AGND AVCC2 VREF WBI TCG AIN BIN EIN FIN VBAT VDD1 DGND TEST2 X176KO FODRF FODRR TRDRF TRDRR SLDRF DTEMP 14 R207 680 C209 0.1 DCNF CK108 R140 390K R138 390K 1 11 +2.5V TP131 TP132 TP133 TP130 R135 56K R137 56K 13 14 15 16 17 18 19 20 21 22 23 24 R136 390K CK201 ADIP AGC RFADD TCGO TCGI AOUT BOUT EOUT FOUT EIN 12 FIN FSW 150K BOUT EOUT ESW IC101 B CK203 CK202 BPF BIAS VCC1 PIN 3+4 GND1 EFMO 48 47 46 45 44 43 42 41 40 39 38 37 C131 1234 1+2 0.1 EFMAGC CK111 2-1 36 1 RF1 R CK112 ADAGI C132 RF2 35 2 and 0.22 CK113 34 ADAGC 3 RF3 SW DIFF CK114 33 ADIPNF 4 RF4 ADIPO 32 N.C. C103 C102 1 5 REFI 1 GND2 31 REFO 6 TP144 WBO TP144 C113 30 7 AOUT BIAS 1 R131 ASW R132 VCC2 29 8 1M OPICPW 150K AIN SW 28 N.C. 9 CK102 BIN MODE 27 10 DISC R133 BSW R134 26 11 1M PLAYBACK SIGNAL RECORD SIGNAL C122 C123 220P 330P R112 220K C112 0.1 R104 22K R111 12K C114 5P(CH) C109 1 C107 0.1 C106 1 C111 1 C110 0.22 C108 1 MAIN PWB-A PITG NIN A +2.7V TP487A C172 33/6.3 C171 33/6.3 R151 100K OPIC OPTICAL PICKUP EFMO R920 100K R411 100K R422 100K FP66 TP411A R416 1K TP413 (GREEN) TP40 XRT HREC EMPH0 PCNT2 DCON PCNT3 PBAULT TP40 BATON DCNT1 (OG) STOP (BLUE) ELON R402 100K TP402 LDON R407 100K XL401 3.68MHz TP406 _DCIN R403 1K 2 3 1 TP901 SW901 DISC PROTECT R405 10K TP400 TP411 R415 1K SYD7 SYD6 SYD5 SYD4 SYD3 SYD2 SYD1 SYD0 SYWR SYRD SYRS RCAULT OPICGA JPNP TEST0 TEST1 RCPCNT INPGCK INPGI MCPGI VSS RCLAT VCC SYD7 SYD6 SYD5 SYD4 SYD3 SYD2 SYD1 SYD0 SYWR N.C. R406 22K SW401 EJECT L608 10µH C608 1 FOK DCEXT RMDAT PCLDI SCK0 SLCNT3 SLCNT2 SLCNT1 RPLAY SENSE FOK DCEXT R904 10K 74 75 76 77 78 RKEY STDCK PLVDCI PLVBAT EEPD EPCS LEDCNT2 CKSTP XRST REC _PLAY EMPH0 PCNT2 DCON PCNT3 PBLAT LDON BATON DCNT1 LEDCNT3 STOP LEDCNT1 ELON 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 R424 22K R903 470 49 50 51 52 RKCNG TEMP HKEY2 HKEY1 FP67 HKEY2 HKEY1 RKEY STDCK R908 100K SYRS SYRD EEPK EPRT PCNT1 IC401 IX0419AW SYSTEM MICROCOMPUTER FP59 N.C. N.C. N.C. N.C. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 13 R907 180K TP661 TP660 TP659 TP658 TP657 TP656 TP655 TP654 TP653 TP652 TP651 IC601 BD6640KV MOTOR DRIVE X176K FODRF F IC601 62 H1FOUT 63 H1PG 64 IN1F R905 100K TEMP 1 2 98 99 100 RFPCNT BUZOUT SGAIN DISCP MCMON R414 1K 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 C401 0.1 D432 1SS372 R408 100K AURESET L604 22µH ASGND BRK– BRK+ FG CSL2 CSL1 CST 19 SPVIN RIB 18 SPUIN 17 PWIN1 SPCOM SPWIN 32 S2 31 S1 30 SGND LDVAR R425 22K R423 22K L603 4.7µH 49 C2P 50 C1M 51 C1P 32 31 30 R906 29 270K 28 SPDRR 27 26 C910 0.047 25 C909 0.047 24 C908 0.33 23 22 21 C907 0.0022 20 19 C906 0.0022 C905 0.0022 18 17 23 24 25 26 27 DISCPR C603 1 L601 22µH C601 1 EXTCLK N.C. H2PG2 H2ROUT H2VM H2FOUT H2PG H1PG1 H1ROUT H1VM IN2R STALL STHB SPVM1 SPUOUT SPPG1 N.C. SPVOUT SPVM2 SPWOUT SPPG2 PWVM PWOUT PWPG L602 22µH +B VG VCC1 VCC2 SLVM1 SLUOUT SLPG1 SLVOUT SLVM2 SLWOUT SLPG2 SLCOM BEMFW BEMFV BEMFU S3 C911 0.1 C130 0.1 RACLK RADAT CHGCNT DSPDAT DSPSTB DSPSCK PBOPON P11 CIN SPIN DINT DISCPR ARQD P17 AVSS LDVAR OSC1 _RESET _DCIN uSTBY VCC XTAL VSS EXTAL FWE MD2 EJSW SLCNT3 SLCNT2 SLCNT1 RPLAY SENSE CIN SPIN DINT DISCPR SLCNT3 SLCNT2 SLCNT1 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 DCNT1 C602 1 C912 0.1 C2M IC354 CPH5608 HEAD DRIVER IC353 FTD2005 HEAD DRIVER C604 1 11 10 9 8 7 6 5 4 3 2 1 M902 SLED MOTOR D431 1SS361 M M903 LIFT MOTOR C431 0.47 R431 330K IC431 S-80820LNP RESET 1 OUT 2 VDD VSS 4 3 R462 22K N.C. 100K M + +B 100K – C600 22/6.3 R461 U W V W U V M901 SPINDLE MOTOR TP610 C605 0.1 HEAD COM M +B 1 R463 +B 11 G TP412 C901 1 C361 0.039 CN601 C902 0.01 R404 100K D2 S2 S2 G2 D1 S1 S1 G1 R909 10K 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Vref AVCC MD0 MD1 LDCNT1 LDCNT2 SPIN IC651 LB1938T MOTOR DRIVE 1234 TP415 AUSCLK AUDATA CHGCNT DSPDAT DSPSTB DSPSCK PBMUTE N.C. 4 3 2 1 FP31 N.C. G O2 I2 O1 I1 G VCC FP32 8 76 5 IN1R IN2F R361 15 5 6 7 8 FODRR TRDRF TRDRR 2 IC353 D351 SBE803 4 3 C351 N.C. 2 47P 5 1 (CH) D1 G1 S D2 G2 IC354 E 1 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 DISC TP351 TP408 N.C. +B INPGCK INPGIN MCPGIN BEEP SGAIN D651 F10J2E R351 3.9 C353 10/6.3 RFPCNT OPICGA R412 15K 5 6 7 8 TP409 TP417 TP416 0V IC40 58X24 EEPR TP401 Q901 RN1104 1 C354 0.1 543 +B 3 0V 2 4.22V N.C. 10 11 12 13 14 VCC 7 6 5 4 3 2 1 SPDRF C357 0.1 GND N.C. 8 9 PLVDCI PLVBAT IC351 C652 0.1 IC351 74ACT02FT HEAD DRIVER TP352 HDON +B D R464 220K C454 0.0022 MECHANISM FLEXIBLE H • NOTES ON SCHEMATIC DIAGRAM can be found on page 28. • The numbers 1 to 15 are waveform numbers shown in page 37. 1 2 3 4 Figure 30 SCHEMATIC DIAGRAM (1/2) – 30 – 5 6 MD-MT877/MD-MT877C LCD ASS'Y 10 11 12 13 14 TLGU1008 470 C509 1 470 C510 1 TP410 TP411 DISPLAY SWA06 VOLUME– SWA07 SWA08 SWA09 VOLUME+ STOP MODE SWA10 FAST REVERSE SWA11 FAST FORWARD SWA12 ENTER AGND LIHP LOUT 3 0V IC404 N7SZ86P5 GATE IC C703 0.01 VEE DGND AMP&GAIN SEL. LHPVEE +B 3.3/10 C722 R+ R765 15 R766 C766 0.22 15 C753 1 D494 15AZ7.5Y N.C. RDATA L457 L458 D493 015Z5.1Y ELON 2.73V 2.21V R J702 MIC IN 6 5 2 4 3 1 7 8 J703 REMOTE CONTROL/ EARPHONES TERMINAL C451 0.022 R495 1K Q493 2SA1832 GR R496 22 (–) C493 0.47 R416 1K 4 C774 1 C869 47/6.3 TP726 TP725 TP722 TP724 TP723 TP721 TP727 TP728 L453 D491 015Z5.1Y +B C771 IC771 47/6.3 62GR2322 2.3V REGULATOR 5 TP711 L452 C491 0.1 L454 D492 15AZ7.5Y +2.7V 1 2 3 C773 0.22 3.3/10 R492 1K C765 0.22 IC703 IR3R59N AUDIO AMP. L R724 6.8K L714 TP714 4 L713 TP713 2 R-CH L712 TP712 3 L711 1 L456 KEY PLAY C763 1 L-CH VCC Vout GND L-CH D496 MA8075M L491 33 RKEY RPLAY PBMUTE BEEP R731 47K R723 6.8K R727 8.2K C721 4.7K 7 9 8 6 1 2 3 4 5 C724 0.001 N.C. R733 47K EMPH0 C492 1 L+ RIN LIN ATT ATT LLPFO RLPFO LPF LPF L– R– 7 6 5 4 3 2 1 D495 MA8075M R762 100K HP BEEP LAT CLK LOGIC R713 10K L703 C723 0.001 N.C. RHPVEE AMP&GAIN SEL. 4.7K R730 13 14 15 16 17 18 19 20 21 22 23 24 R442 820 Q442 RN4911 BIAS DAT LHPVCC RHPVCC R757 2.2K C760 0.1 R732 47K R729 N.C. TP701 TP702 TP703 TP704 TP705 L702 GND C711 C712 L704 100P 100P(CH) R714 (CH) J701 10K OPTICAL/ C714 Q721 Q721 LINE 4.47V 1 3.91V 2SD1979 S R725 RIPPLE R726 39K 4.43V 100 FILTER C726 3.3/10 C725 3.3/10 R728 C731 1K 0.22 C764 1 R-CH TP772 6 5 4 IC701 IR3R54N AUDIO AMP. TP706 TP708 TP707 C715 0.1 C713 1 2 1.87V 1 0V L-CH R-CH C754 1 12 11 10 9 8 R718 1K R710 47 RN1444 A R715 100K R716 100K 13 14 15 16 17 18 19 20 21 22 23 24 N.C.C701 R703 10/6.3 100K C758 1 R761 390K R758 100 RCAULT AUSCLK AUDATA 1 2 3 RDATA GND 6.8K R701 100 R754 180K IC200 62GR2522 2.5V REGULATOR 5 4 R711 5 CTRL OSC VREF D841 F10J2E 2 OUT VCC STAND BY CTRL D821 D1FH3 C822 22/6.3 D IC821 4 3 1 C841 1 C850 R850 22K 0.1 R841 100K C860 1 C838 0.1 L821 10µH G 4 DCON 2 R833 C832 47 0.1 S TP842 5 N.C. 1 D832 D831 HRB0103B HRB0103B C825 C834 1 0.1 IC841 1 2 3 C848 1 4 5 3 2 1 PCNT2 IC842 62GR2522 2.5V REGULATOR R812 100K R815 R814 100K 27K R803 Q803 2SA17457 1K R801 5.38V Q821 HN1C01FU R822 100K 1 2 3 0.86V R254 R274 1M 56K 4.81V 5.39V R255 560K 6 5 4 R258 330K R259 2.2K C253 0.01 R277 2.2K 0.1 PLVBAT BATON R256 100K R278 22 R282 47K R281 1K C292 0.01 STDCK R292 100K 8 9 10 Figure 31 SCHEMATIC DIAGRAM (2/2) – 31 – 11 IC251 S-80808LNP RESET R275 15K R276 120K 4 5 C273 0.1 CHGCNT VCCMICOM 7 EXTENSION TERMINAL,+ TP801 D801 RB521S30 1.3V C274 C454 0.0022 EE IC801 S-80814ALNP RESET DC-IN R821 Q254 2.2K 2SA1832 GR C821 3.3 IC821 CPH3413 N-CH MOS FET IC822 IR3M14N DC/DC CONVERTER IC841 XC6372C281PR 2.8V UP CONVERTER IC851 CPH3413 N-CH MOS FET IC852 IR3M14N DC/DC CONVERTER Q825 R817 100K IC801 R257 1M 100K R464 220K 3 C830 1 C843 0.22 BUF Q R CMP RSFF S GND +B OPEN STOP HPLAY HREC 4 L841 4.7 3 0V 1 0V DTC144 47K Q801 RN4904 1 6 R805 2 1 OUT 4 1 6 5 1M VSS 3 4 2 5 2 VDD 3 N.C. 3 4 Q804 TP841 HN1C01 FU R806 Q806 5.39V 0V HN1C01FU 100K 1 6 Q261 R802 R804 4.65V 100K 2 5 HN1C01 FU 330K 3 4 1 6 R261 Q805 1M 2 5 2SA1832 GR R807 R264 3 4 100K 100 Q252 R263 R262 R810 R809 C840 FTD2017 100K 330K 22K 47K 220/4 5 G2 G1 4 NI-MH TP803 1.3V R253 6 S2 S1 3 33K R251 C251 7 S2 S1 2 1 6 22 8 D D1 0.1 0.78V 2 5 1.3V R252 3 4 Q251 560K 1 OUT 4 2SA17457 Q253 VSS RN4904 C252 2 VDD 3 N.C. 0.1 Q802 FDN339N 2 3 0V 1 F841 0.4A DC60V C847 1 C846 0.1 R844 47 0V 0.85V 2 (–) C881 0.027 R808 560K BUF Q R CMP RSFF S STAND BY OSC VREF C839 0.33 C836 0.47 C828 1 C823 220/4 C837 1 3 2 1 R818 47K R291 2.2K C272 0.1 3 +- 2 1 IC271 75S54FU OP AMP. BATTERY TERMINAL,+ EXTENSION TERMINAL,+ BATTERY TERMINAL,– TP804 R271 470K R273 47K N.C. OUT VCC R828 2.2K C845 D842 0.1 HRB0103B C851 3.3 GND IC822 C833 0.1 +4.5V 4 L851 10µH IC851 R816 100K 6 54 Q807 HN1C01 FU 123 IC871 C876 1 TC7S86FU EXCLUSIVE OR GATE 5 4 GND C775 1 C858 D851 1 G F10J2E S R854 10K C857 ERRAMP 5 EO R857 33P 560K EIN (CH) 6 R832 180K 7 EIP R834 R853 270K 1.5M 8 ROSC C827 R826 R824 82P 10K (CH) ERRAMP 3.9M 5 EO R825 6 EIN 390K C826 82P(CH) R827 R823 7 EIP 270K 270K 8 ROSC D822 HRB0103B C401 0.1 D432 1SS372 VCC IC852 C856 150P (CH) IC873 62GR4522 4.5V REGULATOR R831 180K R855 180K –2.7V TP401 C859 1 D 1 2 3 R829 100K D861 F10J2E C817 0.1 R881 R882 18K 10K C842 33/6.3 C863 1 R813 2.2K IC871 R871 10K C862 1 C852 22/6.3 BATON DCNT1 (OG) STOP (BLUE) ELON D862 F10J2E D852 F10J2E TP404 D771 F10J2E +1.5V C776 1 C844 10/6.3 TP405 _DCIN DCEXT PLVDCI D772 F10J2E PCNT3 +4.5V (GREEN) R463 EDIT SWA05 LI RI C702 10/6.3 0V TP413 EMPH0 PCNT2 DCON PCNT3 PBAULT SWA04 R717 1K Q711 6.8K C734 0.1 C733 7 6 5 4 3 2 1 0.1 12 11 10 9 8 INPGCK INPGIN MCPGIN 0V R413 1K TP407 4 3 2 1 VCC R712 R719 6.8K R702 100 R445 10K IC404 1 2 3 IC402 58X2404T EEPROM R720 6.8K –2.7V (–) Q443 2SC4738 GR 4 3 2 1 5 C200 C210 1 0.1 +B XRT HREC RECORD PLAY BASS RA16 330 LEDA04 TLOU1008 VCC AURESET R200 100K 7 8 6 IC200 TP411A CL190HBX R502 R441 120 +B +2.7V R415 1K LEDA03 14 LEDA02 8 7 6 5 4 3 2 1 C503 3.3/10 5 +B 4 RA06 8.2K RA07 18K RA08 56K 10K IC501 AK4551VT AD/DA CONVERTER C502 0.0022 9 10 11 12 13 14 15 16 C505 0.001 VCC2R5V 409 QA01 2SC4738GR RA15 R501 L202 10µH 8 RA05 5.6K ROUT C511 0.1 C506 0.001 R412 15K 5 6 7 8 33K RIHP C500 10/6.3 IC202 IX2824AF 16MBIT D-RAM R411 100K 18K RA12 TP771 18 17 16 15 14 13 1 1 2 3 4 5 6 7 8 9 PBAULT A8 A7 A6 A5 A4 GND VCCADDA TP500 7 A10 8 A0 9 A1 10 A2 11 A3 12 VCC C202 47/6.3 TP451 TP452 TP453 TP454 TP455 TP456 TP457 TP458 TP459 TP460 TP461 TP462 TP463 TP464 RA01 5.6K RA02 8.2K RA03 18K RA04 56K RA14 SWA01 SWA02 SWA03 +2.7V C501 0.0022 24 23 22 21 20 19 SDTO DEM1 DEM0 VDD VSS AINL AINR VCOM GND I/O4 I/O3 CAS OE A9 IC501 VCC I/O1 I/O2 WE RAS N.C. OPEN +2.7V DSPSTB DSPSCK DSPDAT HREC HPLAY HKEY2 HKEY1 STOP SDTI LRCK MCLK SCLK PWAD PWDA AOUTL AOUTR 1 2 3 4 5 6 CN451 +B RA13 18K CNLAND1 BCLK LRCK ADPON DAPON OPTCNT DIN EMPH1 CA01 0.1 CA02 0.1 DADATA ADDATA DFCK CNA01 LCD/KEY PWB-B 76 54321 SWA13 OPEN/CLOSE C270 1 R272 470K CONTROL TERMINAL TP805 GND TERMINAL,– TP806 C291 1 12 MD-MT877/MD-MT877C MAIN PWB-A (TOP VIEW) 20 60 15 IC401 R762 10 C724 L713 R729 4 L712 6 R492 13 CK113 R723 R724 L714 C725 1 L704 C912 R412 Q711 1 2 C353 8 R206 IC353 R292 R361 L702 2 R351 C361 D351 R291 C351 C731 C291 L703 C713 3 1 5 R713 J701 OPTICAL/LINE IN : Through-hole where the top, bottom and +B patterns are connected. : Through-hole where the top, bottom and hround patterns are connected. : Through-hole where the top and bottom patterns are connected. • The numbers 1 to 15 are waveform numbers shown in page 37. 1 2 3 4 1 R714 R726 J702 MIC IN 1 5 IC354 C911 R716 C703 5 IC351 3 14 5 6 R725 Q721 7 10 D651 C357 49 4 8 C292 4 L711 R703 R730 J703 REMOTE CONTROL/ EARPHONES 48 C901 4 20 5 1 C652 1 50 45 40 2 C722 R205 3 IC651 IC601 R905 C711 C721 C723 C734 C733 1 C210 R200 R920 C908 R906 24 CN601 8 55 R908 C758 4 5 25 31 32 35 1 11 60 IC701 5 5 20 30 C491 1 8 IC200 5 Q901 R719 5 C204 1 16 C905 17 15 R909 C754 R754 C602 R907 D494 12 L456 D496 R758 R712 10 2 1 100 TP411A IC402 R413 R715 C714 D492 L491 15 90 R415 C726 R720 4 85 64 C451 R711 C766 20 L454 L452 R414 C601 C605 C906 C907 R903 C760 24 3 1 R728 R727 R441 R442 5 R461 R463 R462 R733 R464 R732 R404 1 R731 5 R757 L453 C604 1 R904 C712 R761 C765 D495 4 100 1 95 85 C909 C910 15 80 95 C200 80 R416 12 C492 5 R411 75 1 R768 D491 13 10 10 R445 4 IC703 15 IC201 76 3 10 12 25 20 5 CN451 4 5 R766 30 R422 75 C902 R767 R765 35 70 70 L204 C774 R207 C753 7 40 55 3 C503 C773 8 26 50 TP201A FP66 R407 65 C454 G 51 65 14 IC771 1 L458 CK114 C212 55 C603 4 R406 FP67 R405 TP105A 5 14 L457 45 L103 25 30 35 40 IC404 C500 C511 SW401 EJECT R817 R814 R815 R816 R802 C881 45 50 Q442 13 FP31 C165 R161 FP32 C201 C211 CK112R222 26 51 Q443 1 R818 R812 R801 R806 R808 R831 5 XL201 1 C130 R871 R425 1 R423 C834 IC842 1 C848 FLEXIBLE PWB CN101 R402 IC871 R841 11 FLEXIBLE PWB 12 6 C209 R431 R832 FP59 C431 CK111 22 D432 R424 D431 C401 1 D822 3 F 1 R813 Q805 2 3 4 C833 R408 C844 FROM LCD/KEY PWB P34 3-A Q807 C828 C825 D831 C837 5 7 IC202 R204 C203 C838 D832 FROM MECHANISM FLEXIBLE PWB P35 9-A H Q825 C205 C207 R855 C832 13 4 Figure 32 WIRING SIDE OF P.W.BOARD (1/4) – 32 – 5 6 C354 C856 R829 C839IC431 3 4 18 60 IC873 E R882 R803 R804 R805 R881 Q802 C876 R834 R854 R853 R857 8 19 R833 3 4 D IC852 R856 1 1 1 5 8 R825 R826 C826 C827 C836 TP487A 5 R827 C857 R824 R823 IC822 C R261 R263 R828 4 C860 24 1 Q803 IC271 R810 R822 R809 1 4 4 R807 C830 FLEXIBLE PWB Q801 2 C274 R277 R278 Q806 C270 R274 1 4 5 R273 C273 R275 R254 R264 R271 R272 3 Q254 R276 R255 C272 R258 C253 22 R257 R821 R256 Q821 FROM OPTICAL PICKUP P35 9-G R259 B IC801 Q261 Q804 3 C251 C817 R251 IC251 R262 1 D801 A MD-MT877/MD-MT877C MAIN PWB-A (BOTTOM VIEW) GND TERMINAL,- CONTROL TERMINAL EXTENSION BATTERY TERMINAL,+ EXTENSION TERMINAL,+ BATTERY TERMINAL,+ TP206 C202 TP804 TP805 R282 L202 TP200 R281 R151 Q103 TP841 C132 C112 C110 R112 CK225 CK222 CK205 R103 L821 TP660 TP659 C846 D772 C775 TP352 C858 TP702 TP707 R710 L602 L601 L603 L604 C776 C822 IC501 10 TP202 C869 C771 TP500 C506 C505 C823 TP771 TP351 IC851 7 8 TP412 9 C502 D851 D S C764 C510 TP708 TP772 G 15 16 9 C600 TP706 D862 C863 C715 D852 8 C862 TP205 TP408 D861 1 TP452 TP651 TP654 R718 R717 TP655 1 C842 5 D771 CK201 TP201 5 C841 C843 TP463 D841 TP653 TP652 9 L841 C845 D821 TP656 TP657 L608 3 4 TP464 R844 C847 D842 C821 TP409 TP461 C509 TP661 TP658 TP460 C608 D 4 D493 IC841 TP407 1 11 G C493 R496 IC821 TP411 L171 TP454 S Q493 C763 TP610 C171 3 R495 TP842 C172 TP456 TP209 TP405 TP210 F841 0.4A, DC60V TP458 CK206 CK204 TP401 TP208 CK202 TP451 C850 R104 TP211 R134 TP131 CK203 TP459 TP455 TP417 TP453 R850 C121 R101 C133 R133 TP130 R139 R137 R140 R135 R131 R132 TP457 TP204 CK207 TP416 25 R138 R136 TP132 R102 24 C123 C124 20 13 C122 15 12 XL401 TP212 TP207 CK102 30 10 TP400 TP103 TP117 TP105 TP415 Q253 TP119 TP115 TP704 TP487 R702 C702 R502 35 TP133 40 C252 TP413 TP110 TP106 C131 IC101 5 TP120 TP121 TP462 TP139 CK108 TP203 CK224 36 Q252 TP402 TP410 TP107 TP111 TP101 37 TP404 TP122 TP102 C108 R111 C107 TP118 TP116 TP108 C106 TP144 48 45 1 TP114 TP113 R252 TP109 R253 C113 C103 C111 C102 TP801 L100 TP100 C109 C114 Q251 2 C151 C100 10 TP803 15 14 TP713 6 8 7 5 R501 TP727 C501 TP724 BATTERY TERMINAL,- TP722 TP714 TP703 C840 TP723 TP725 C859 SW901 DISC PROTECT R701 TP712 C701 TP726 L851 TP701 TP806 C851 C852 TP711 TP705 R403 TP901 TP721 TP728 J701 OPTICAL/LINE IN 7 8 TP406 1 J703 REMOTE CONTROL/ EARPHONES J702 MIC IN 9 3 10 Figure 33 WIRING SIDE OF P.W.BOARD (2/4) – 33 – 11 12 2 MD-MT877/MD-MT877C LCD/KEY PWB-B(TOP VIEW) 1 A CN451 TO MAIN PWB P32 2-F 14 FLEXIBLE PWB B C D LCD/KEY PWB-B(BOTTOM VIEW) E LEDA04 P35 7-H LCD ASS'Y LEDA03 F LEDA02 RA12 RA14 RA13 CA02 7 RA15 CNA01 QA01 SWA08 STOP SWA07 VOLUME+ RA08 SWA05 DISPLAY RA04 RA03 RA02 1 SWA02 PLAY SWA06 VOLUME– SWA01 RECORD SWA09 MODE RA06 RA01 RA07 SWA12 ENTER SWA11 FAST FORWARD G RA05 CA01 RA16 SWA13 OPEN/ CLOSE SWA03 BASS SWA04 EDIT SWA10 FAST REVERSE H : Through-hole where the top and bottom patterns are connected. 1 2 3 4 Figure 34 WIRING SIDE OF P.W.BOARD (3/4) – 34 – 5 6 MD-MT877/MD-MT877C M902 SLED MOTOR CN601 TO MAIN PWB P32 2-D MAGNETIC HEAD(3) M903 LIFT MOTOR MECHANISM FLEXIBLE PWB(5) M901 SPINDLE MOTOR LCD ASS'Y(217) OPTICAL PICKUP(4) CN101 TO MAIN PWB P32 2-B CNA01 TO LCD/KEY PWB P34 4-F 7 8 9 10 Figure 35 WIRING SIDE OF P.W.BOARD (4/4) – 35 – 11 12 MD-MT877/MD-MT877C VOLTAGE IC101 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 VOLTAGE 0.26 V 0.26 V 0.26 V 0.26 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 1.25 V 0.26 V 1.48 V 0V 0V 2.49 V 2.49 V 1.78 V 0V 1.25 V 1.25 V 0.26 V 1.25 V 1.25 V 1.3 V 1.28 V 0.7 V 2.49 V 1.51 V 0V 1.25 V 0.28 V 0.28 V 1.25 V 0.28 V 0.28 V IC202 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 VOLTAGE 1.24 V 0V 0V 0V 2.5 V 0V 0V 0V 0V 0V – 1.55 V 0V 0.67 V 0.67 V 2.7 V 1.24 V – 0V 1.24 V 1.24 V 0V 0V 0V 1.23 V 1.23 V 1.23 V 0V 0V 0V 0V 2.5 V 0V 0V 1.25 V 2.5 V 2.5 V 0V 2.5 V – 0.8 V 0.8 V 1.25 V 0.7 V 1.25 V 1.4 V 0.7 V 2.49 V 2.49 V 0V VOLTAGE 2.71 V 1.59 V 1.66 V 2.47 V 1.85 V 0V 1.07 V 1.39 V 0.55 V 0.55 V 0.55 V 2.71 V 0V 0.58 V 0.94 V 0.94 V 0.94 V 0.94 V 1.07 V 1.8 V 2.01 V 1.61 V 1.61 V 0V VOLTAGE 0.85 V 0.9 V 0.9 V 0V 0V 0.77 V IC404 IC351 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VOLTAGE 0V 0V 4.45 V 0V 0V 4.45 V 0V 1.13 V 4.45 V 0V 1.13 V 4.45 V 0V 4.51 V PIN NO. 1 2 3 4 5 2.5 V 2.5 V 0V 0V 2.5 V IC200 PIN NO. 1 2 3 4 5 PIN NO. 1 2 3 4 VOLTAGE 22.5 V 2.5 V 0V 0V Q802 PIN NO. 1 2 3 VOLTAGE 0V 1.3 V 0.85 V Q804 PIN NO. 1 2 3 4 5 6 VOLTAGE 0V 0V 0V 0V 0.58 V 0.86 V IC401 PIN VOLTAGE PIN VOLTAGE NO. NO. 51 – 0.27 V 1 52 2.49 V 0.98 V 2 53 2.49 V 2.5 V 3 54 4 0.7 V 2.5 V 0.8 V 2.5 V 55 5 – 2.5 V 56 6 – 2.39 V 57 7 – 0V 58 8 59 – 2.4 V 9 60 10 – 2.5 V 61 – 2.5 V 11 2.5 V 2.5 V 62 12 0V 1.27 V 13 63 64 0V 0V 14 65 2.1 V 0.64 V 15 66 2.68 V 0V 16 67 2.57 V 1.6 V 17 68 2.5 V 1.97 V 18 0V 0V 69 19 70 2.49 V 0V 20 2.49 V 71 0V 21 0V 1.4 V 72 22 0V 0V 23 73 0V 0V 24 74 0V 1.33 V 25 75 0V 0V 26 76 0V 1.4 V 27 77 78 0V 0V 28 79 0V 0V 29 80 0V 0V 30 81 0V 2.49 V 31 82 2.38 V 0V 32 83 2.49 V 2.47 V 33 84 2.5 V 2.47 V 34 85 0V 0V 35 86 0 V 2.49 V 36 37 87 2.47 V 0V 38 88 2.49 V 0V 39 89 0V 2.49 V 90 40 2.44 V 0V 91 0V 2.47 V 41 92 0V 2.47 V 42 93 0V 2.5 V 43 94 – 2.49 V 44 95 2.34 V 0V 45 96 1.47 V 2.5 V 46 97 2.49 V 2.49 V 47 98 2.49 V 0V 48 49 99 2.49 V 2.49 V 100 2.49 V 2.49 V 50 Preform the measurement on the IC401 pin 37 in the TEST mode with GND short-circuited. (LCD is in "TEST" state.) VOLTAGE IC873 PIN NO. 1 2 3 4 5 VOLTAGE 0V 2.7 V 1.34 V 0V 2.5 V IC431 Q801 PIN NO. 1 2 3 4 5 6 IC201 VOLTAGE PIN NO. 51 0.79 V 2.49 V 52 1.3 V 53 0V 54 2.49 V 55 1.25 V 56 1.25 V 57 1.25 V 58 1.25 V 59 1.25 V 60 1.25 V 61 1.25 V 62 1V 63 64 1.55 V 0V 65 0V 66 1.24 V 67 0V 68 0V 69 0V 70 0V 71 0V 72 0V 73 0V 74 0V 75 0.55 V 76 0.55 V 77 78 0.55 V 79 1.39 V 80 1.06 V 81 2.5 V 82 0.58 V 83 0.94 V 0.94 V 84 0.94 V 85 0.94 V 86 1.8 V 87 0V 88 2.02 V 89 90 1.6 V 91 1.6 V 92 1.07 V 1.85 V 93 2.48 V 94 1.65 V 95 1.59 V 96 1.07 V 97 2.39 V 98 1.88 V 99 100 1.13 V VOLTAGE 0V 7.43 V 2.5 V 0V 4.49 V VOLTAGE 2.7 V 0V 0V 0V 0V 0V 0V 2.7 V Q442 PIN NO. 1 2 3 4 5 6 VOLTAGE 5.17 V 4.66 V 4.66 V 1.8 V 0V 0V PIN NO. 1 2 3 4 5 6 VOLTAGE 2.5 V 2.5 V 0.2 V 2.5 V 2.5 V 2.5 V IC841 PIN NO. 1 2 3 4 5 VOLTAGE 1.28 V 2.8 V 1.36 V 1.28 V 0V IC353 PIN NO. 1 2 3 4 5 6 7 8 Q103 IC354 PIN NO. 1 2 3 4 5 VOLTAGE – – 0V 0V 0V Q252 PIN NO. 1 2 3 4 5 6 7 8 Q261 PIN NO. 1 2 3 4 5 6 VOLTAGE 1.3 V 1.3 V 1.3 V 5.38 V 4.94 V – – 1.3 V IC601 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 VOLTAGE 0V 0V 0V 0V 0.55 V 1.15 V VOLTAGE 5.39 V 0V 0V 0V 2.5 V 5.37 V 0V 0V 0V 2.47 V 2.47 V 0V 0V 0V – 0V 0V 0V 0V 1.3 V 0V 0V 0V 0V 0V 0V – 0V 0.8 V 0V 0.8 V 2.46 V 0V 0.65 V 0V 0V 2.5 V 2.5 V 2.5 V 0V 0V 0V 1.67 V 0V 1.66 V 1.3 V 1.62 V 0V 1.62 V 1.3 V 2.5 V 2.5 V 7.25 V 1.24 V 6.11 V 1.24 V 3.72 V 1.24 V 0V 0V 0V 1.3 V 0V 0V 0V 0V 1.3 V 0V 0V 0V VOLTAGE 1.3 V 1.3 V – 0V IC271 PIN NO. 1 2 3 4 5 VOLTAGE 1V 0V 0.66 V 1V 2.7 V Q807 Q806 PIN NO. 1 2 3 4 5 6 – 36 – VOLTAGE 0V 0.56 V 4.6 V 0V 0V 0V PIN NO. 1 2 3 4 5 6 VOLTAGE 0V 0V 2.5 V – – 2.46 V IC501 IC701 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 VOLTAGE 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V -2.48 V 0V 0V 2.29 V 0.85 V 0V 0V 0V IC703 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 VOLTAGE 0V 0V 0V 0V 0V 1.76 V -1.76 V 0V 1.76 V 0V 0.88 V 0V 2.27 V 0V 0V 1.76 V 0V -1.76 V -1.76 V 0V 0V 0V 0V 0V IC402 PIN NO. 1 2 3 4 5 6 7 8 IC251 PIN NO. 1 2 3 4 Q253 PIN NO. 1 2 3 4 5 6 VOLTAGE VOLTAGE 0V 2.5 V 0V 0V 2.5 V 0V 2.5 V 2.5 V PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 VOLTAGE 2.7 V 0V 0V 0V – 0.5 V 0.5 V 0V VOLTAGE 0V 2.7 V 2.7 V 0V 2.3 V VOLTAGE 0V 2.8 V 2.6 V 0V 2.5 V IC851 PIN NO. D S G VOLTAGE 1.28 V 0V 0.55 V IC852 PIN NO. 1 2 3 4 5 6 7 8 VOLTAGE 1.28 V 2.8 V 0.47 V 0V 1.17 V 1.17 V 1.16 V 1.26 V IC871 PIN NO. 1 2 3 4 5 VOLTAGE 1.24 V 2.49 V 0V 1.25 V 2.5 V IC801 PIN NO. 1 2 3 4 VOLTAGE 0V 0.8 V – 0V IC821 PIN NO. D S G VOLTAGE 1.28 V 0V 0.3 V IC822 PIN NO. 1 2 3 4 5 6 7 8 IC771 PIN NO. 1 2 3 4 5 0V 0V 0V 0V 2.3 V 0V 0V 0V 0V 1.24 V 1.22 V 1.23 V 0V 0V 0.27 V 0.31 V IC842 PIN NO. 1 2 3 4 5 IC651 PIN NO. 1 2 3 4 5 6 7 8 VOLTAGE VOLTAGE 1.25 V 2.8 V 0.7 V 0V 1.2 V 1.17 V 1.16 V 1.25 V Q821 PIN NO. 1 2 3 4 5 6 VOLTAGE 0V 0.5 V 0V 0V 2.5 V 5.37 V MD-MT877/MD-MT877C WAVEFORMS OF MD CIRCUIT T Stopped CH1=1mV DC 10:1 1 CH2=500mV DC 10:1 CH3=5V DC 10:1 TP208 (FEMON) 5 IC501(9) (SDTi) 6 IC501(12) (SCLK) TP120 (F+) CK206 (CIN) 4 CK204 (FOK) 7 8 T CH2=2V DC 10:1 CH3=500mV DC 10:1 1994 / 12 / 16 01:03:40 2ms/div (2ms/div) ENV TP201 (EFMMON) 1 TP210 10 (TEMON) IC501(10) (LRCK) T 2 11 TP209 (TOTMON) IC501(11) (MCLK) 4 CH1 CH2 CH3 CH4 =Offset= : 0.00V : 0.000V : 0.00V : 0.00V =Record Length= Main : 10K Zoom : 10K T Stopped CH1=2V DC 10:1 CH2=2V DC 10:1 =Trigger= Mode : NORMAL Type : EDGE CH4 Detay : 0.0ns Hold OFF : MINIMUM =Filter= Smoothiing : OFF BW : FULL 1994 / 12 / 15 23:31:21 50ms/div (50ms/div) ENV Stopped CH1=2V DC 10:1 T 1 IC201(25) (SPDRR) 1 =Offset= : 0.00V : 0.00V : 0.00V : 0.00V CH1 CH2 CH3 CH4 CH2=2V DC 10:1 =Record Length= Main : 5K Zoom : 5K CH3=2V DC 10:1 =Trigger= Mode : AUTO Type : EDGE CH3 Detay : 0.0ns Hold OFF : MINIMUM =Filter= Smoothiing : OFF BW : FULL 1994 / 12 / 18 09:26:46 CH4=2V 1s/div DC 10:1 (1s/div) ENV Stopped CH1=2V DC 10:1 =Offset= : 0.00V : 0.00V : 0.000V : 0.00V CH1 CH2 CH3 CH4 =Record Length= Main : 10K Zoom : 10K =Trigger= Mode : NORMAL Type : EDGE CH2 Detay : 0.0ns Hold OFF : MINIMUM 1994 / 12 / 16 01:23:16 500ms/div (500ms/div) MORM:200MS/s TP208 (FEMON) 1 10 VM T Stopped CH1=1V DC 10:1 9 3 3 =Filter= Smoothiing : OFF BW : FULL 13 1994 / 12 / 16 00:24:17 CH4=2V 50us/div DC 10:1 (50us/div) NORM:100MS / s T 4 12 CH3=2V DC 10:1 2 2 3 CH2=2V DC 10:1 1 1 2 T Stopped CH1=2V DC 10:1 1994 / 12 / 15 22:54:19 CH4=2V 50ms/div DC 10:1 (50ms/div) NORM:200kS / s TP210 (TEMON) 9 T TP201 (EFMMON) T 2 2 1 =Tracel= Bandwidth FULL 20MHz =Filter= Smoothiing : OFF BW : FULL CH1 CH2 CH3 CH4 =Offset= : 0.00V : 0.00V : 0.00V : 0.00V =Record Length= Main : 10K Zoom : 10K T Stopped CH1=2V DC 10:1 CH2=2V DC 10:1 CH3=500mV DC 10:1 =Trigger= Mode : NORMAL Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM =Filter= Smoothiing : OFF BW : FULL 1994 / 12 / 15 08:57:26 2ms/div (2ms/div) ENV CH1 CH2 CH3 CH4 Stopped CH1=2V DC 10:1 P-P 1.280V Smooth OFF ON =Offset= : 0.00V : 0.00V : 0.00V : 0.00V CH2=2V DC 10:1 =Record Length= Main : 10K Zoom : 10K CH3=2V DC 10:1 =Trigger= Mode : AUTO Type : EDGE CH2 Detay : 0.0ns Hold OFF : MINIMUM =Filter= Smoothiing : OFF BW : FULL CH1 CH2 CH3 CH4 Stopped CH1=2V DC 10:1 1994 / 12 / 15 09:58:45 CH4=2V 1s/div DC 10:1 (1s/div) ENV =Offset= : 0.000V : 0.00V : 0.00V : 0.00V CH2=2V DC 10:1 =Record Length= Main : 1K Zoom : 1K CH3=2V DC 10:1 =Trigger= Mode : AUTO Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM 1994 / 12 / 15 08:39:46 1s/div (1s/div) NORM:1kS/s T 9 1 TP201 (EFMMON) TP208 (FEMON) 1 TP210 10 (TEMON) 2 10 TP210 (TEMON) 12 IC201(25) (SPDRR) 13 VM T 1 2 T 10 TP210 (TEMON) 11 TP209 (TOTMON) 1 =Filter= Smoothiing : OFF BW : FULL CH1 CH2 CH3 CH4 Stopped CH1=500mV DC 10:1 =Offset= : 0.00V : 0.00V : 0.000V : 0.0V =Record Length= Main : 10K Zoom : 10K =Trigger= Mode : NORMAL Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM 3 4 =Filter= Smoothiing : OFF BW : FULL =Offset= : 0.00V : 0.00V : 0.00V : 0.00V 9 TP201 (EFMMON) 10 TP210 (TEMON) =Record Length= Main : 10K Zoom : 10K T Stopped CH1=2V DC 10:1 1994 / 12 / 15 09:10:03 20us/div (20us/div) ENV CH2=2V DC 10:1 CH1 CH2 CH3 CH4 CH2=2V DC 10:1 CH3=1V DC 10:1 =Trigger= Mode : AUTO Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM =Filter= Smoothiing : OFF BW : FULL CH1 CH2 CH3 CH4 =Offset= : 0.00V : 0.00V : 0.00V : 0.0V =Record Length= Main : 10K Zoom : 10K =Trigger= Mode : AUTO Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM 1994 / 12 / 15 21:54:52 CH4=1V 500us/div DC 10:1 (500us/div) ENV 1 14 CK108 (ADIPO) T T 2 3 15 =Filter= Smoothiing : OFF BW : FULL CH1 CH2 CH3 CH4 =Offset= : 0.000V : 0.00V : 0.000V : 0.0V =Record Length= Main : 4K Zoom : 4K =Trigger= Mode : NORMAL Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM TP121 (T-) 4 =Filter= Smoothiing : OFF BW : FULL CH1 CH2 CH3 CH4 =Offset= : 0.00V : 0.00V : 0.00V : 0.00V For TP208, TP209, and TP210, use the specific LPF, and observe the waveform. 10K =Record Length= Main : 10K Zoom : 10K =Trigger= Mode : NORMAL Type : EDGE CH2 Detay : 0.0ns Hold OFF : MINIMUM When watching the EEM monitor (TP201) Set MSL from 00H to 80H with EEPROM control setting. After completion restore 00H. Measurement TP 1000P – 37 – MD-MT877/MD-MT877C TROUBLESHOOTING Use the test mode which indicates trouble causes before repairing the unit. This mode records maximum 2 past error causes as codes. Refer them for repairing. Preparations If dusts and foreign materials are accumulated on the pickup lens, playback sounds can be skipped or the TOC (Table of Contains) can't be displayed. Clean the object lens and check the playback. When lens are dirty, do the following. Turn off the power and wipe lens softly with a cleaning paper and a little marketing so as not to damage them. Do not touch lens with bare hands. If the unit doesn't work. If the unit doesn't start after cleaning the pickup objects lens lens, check the unit as follows. Is the power supply turned on when the remote control button or main unit button is pressed ? No Perform the check stated in item "Power is not turned on when the / button is pressed". Yes Perform the check stated in item "Abnormal display". Does the display operate normally ? No Yes Is playback state set ? No Yes Perform the check stated in item "Playback state cannot be set". Perform the check stated in item "Audio playback circuit". Is audio output normal ? No Yes Is recording/playback operation normal ? No • Power is not turned on when the pressed. / button is Yes Perform the check stated in item "Recording/playback operation". • If "HOLD" appears, press and hold down STOP on the main unit and cancel the HOLD mode. No Is power turned on when the remote control pressed ? button is Yes Normal. No Is operation normal when the main body button is pressed ? Yes No Does the pin 63 of IC401 oscillate ? No – 38 – Check the remote control, headphone terminals on the main unit (J703), IC401 and IC404. Replace XL401. MD-MT877/MD-MT877C • Abnormal display. Is waveform output from CN451 pins 3 to 5 ? Are the pin 2 (VCC) and pin 12, 13 (GND) normal ? Is waveform output from IC401 pins 31 to 33 ? No No Yes Yes Check between IC401 and CN451. Check the periphery of IC401. Check for pattern breakage of flexible PWB, check for defects of display microcomputer (replace the display unit). • Audio playback clrcult. In the normal playback mode, LCD play time display functions, but no audio is heard. Is audio waveform output from IC501 pins 15 and 16 ? No Check IC201 pins 70 to 72, pin 74 and IC501 pins 9, 10, 11, 12. Yes Is audio waveform output from IC703 pins 8 and 17. No Check the pins 4 and 21 of IC703. Yes Is audio waveform output from J703 pins 3 and 4. No Check for defective solder joint of audio signal line between IC703 and J703. Yes Check headphones jack, and periphery of headphone. • The spindle motor fails to run. Does the head move. Does the waveform appear on the IC201 pins 24 and 25 after TEST mode AUTO2 completion and in this state ? No Check the IC201 periphery. Yes Does waveform appear on the IC601 pin 15 ? No Replace IC601. Yes Does waveform appear on IC601 pins 7, 10 and 12 ? No Yes Replace the spindle motor. – 39 – L608, IC201, IC601, CN601 and flex, etc. soldering check. MD-MT877/MD-MT877C • Recording/playback operation. Insert a low reflection disc, and ascertain audio output by normal playback, and then set TEST REC mode. Change MSL from 00H to 80H by the control setting of EEPROM. After completing the operation, return in to 00H. Does the head move down, failing to start record even when the continuous record mode is set after address ? No Yes Does the RF waveform appear at TP201 when recording/ Playback is performed. Check voltage of pins 57 and 58 of IC201, pins 2, 3, 6, and 7 of IC651, pins 4 and 5 of CN601. Check whether disc is recordinhibited. Yes No Does level of pins 43 of IC401 and pin 86 of change depending on record and playback ? No Check periphery of IC401 and IC101. Yes Is RF pattern output from IC201 pin 50 ? No Check for soldering failure of IC201 . Yes Check whether there is any damage in IC101, periphery of laser diode. Check for defects of IC351 in head drive flexible PWB, head, flexible PWB. Check whether input waveform is observed on the pins 5 and 6 of IC701. No Check whether the audio signal line between IC701 and J701 is defective. No Check whether the voltage of pins 13 to 15 of IC701 varies with the recording VOLUME +/– button operation. Check whether the soldering of IC701 is poor. No Check whether the pin 7 of IC501 and the pin 81 of IC201 are in H state. Yes Is audio waveform observed on the pins 10 and 12 of IC701 ? Yes Is the output waveform output to the pin 8 of IC501 ? Yes Check the periphery of IC501 and the waveform of the pins 70 to 73 of IC201. – 40 – MD-MT877/MD-MT877C FUNCTION TABLE OF IC IC401 RH-iX0419AWZZ :System Microcomputer (IX0419AW) (1/2) Pin No. Port Name Terminal Name Input/Output Function 1 PE5 SYRS Output System LSI register selection output. 2 PE6 _SYRD Output System LSI read enable output. 3 PE7 _SYWR Output System LSI write enable output. 4-11 PD0-PD7 SYD0-SYD7 12 CVCC CVCC Input/Output Input 13 PC0 PCLAT Output 14 Vss VSS 15 PC1 _MCPGI Input Microphone plug insertion detection input. 16 PC2 _INPGI Input Line/digital plug insertion detection. 17 PC3 INPGCK Input Line/digital plug type detection. 18 PC4 RCPCNT Input/Output 19* PC5 TEST1 Input Test mode setting input 1. 20* PC6 TEST0 Input Test mode setting input 0. 21 PC7 JPNP 22 PB0 OPICGA Output P.U detection sensitivity switching output. 23 PB1 RFRCNT Output RF_LSI power supply ON/OFF control output. 24 TIOCC3 BUZOUT Output Beep sound pulse output. 25 PB3 SGAIN Output RF amp gain pllarity switching output. 26 PB4 DISCP Output RF amp TE polarity switching output. — Input System LSI parallel data bus. Power supply of internal voltage drop circuit. Record audio IC data latch output. Ground potential. Record circuit power control output. Kana conversion/Kana input existence/nonexistence discrimination. 27* TIOCB4 MCMON Output Internal operation status monitor. 28 PB6 RACLK Output Audio IC data clock output. 29 PB7 RADAT Output Audio IC serial data output. 30 PA0 CHGCNT Output Charge control. 31 TxD2 DSPDAT Output Unit indication data output. 32 PA2 DSPSTB Output Unit display strobe output. 33 SCK2 DSPSCK Output Unit indication data clock output. 34 P10 PBOPON Output Audio IC output stage control output. 35* P11 P11 Output 36 P12/TCLKA CIN Input 37 TCLKB SPIN Input Spindle motor FG pulse detection input. 38 IRQ0 _DINT Input System LSI interruption. 39 P15 DISCPR Input Disc record inhibition switch input. 40 IRQ1 ARQD Input Disk cap opens and closes detection/it is started and required. 41* P17 P17 42 AVSS AVSS 43 DA1 LDVAR Output 44* DA0 PA0 Output 45 AN7 RKCNG 46 AN6 TEMP Input Ambient temperature detection input. 47 AN5 HKEY2 Input Unit button operation detection input 2. 48 AN4 HKEY1 Input Unit button operation detection input 1. 49 AN3 RKEY Input Remote control button operation detection input. 50 AN2 STDCK Input Lithium battery voltage detection input. 51 AN1 PLVDCI Input DC IN voltage detection input. 52 AN0 PLVBAT Input DC voltage detection input. 53 Vref VREF — 54 AVCC AVCC Input A/D and D/A converter positive power supply. 55 MD0 MD0 Input Operation mode selection input 0. 56 MD1 MD1 Input 57* OSC2 OSC2 Output — Input — Reserve Track cross signal/focus drive detection. Reserve A/D and D/A converter ground potential. P.U. laser power setting output. Reserve Remote control button operation detection input. A/D and D/A converter reference voltage. Operation mode selection input 1. Sub clock (not used). In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside. – 41 – MD-MT877/MD-MT877C IC401 RH-iX0419AWZZ :System Microcomputer (IX0419AW) (2/2) Pin No. Port Name Terminal Name Input/Output — Function 58 OSC1 OSC1 59 RES _RESET Input Microcomputer hard reset input. 60 NMI DCIN Input DC IN edge detection. 61 STBY _STBY Input Microcomputer standby input (not used). 62 VCC VCC Input 63 XTAL XTAL — Crystal connection terminal. 64 Vss VSS — Ground potential. 65 EXTAL EXTAL — Crystal connection terminal. 66 FWE FWE Input 67 MD2 MD2 Input Operation mode selection input 2. 68 PF7 _EJSW Input Ejection lever operation detection input. 69 PF6 SLCNT3 Output Stepping control 3. 70 PF5 SLCNT2 Output Stepping control 2. 71 PF4 SLCNT1 Output Stepping control 1. 72 PF3/ADTRG _RPLAY Input 73 PF2 SENSE Input System LSI servo sense input. 74 PF1 _FOK Input Focus OK signal input. 75 FP0/IRQ2 _DCEXT Input DC-IN detection (level). 76 TxD0 RMDAT Output 77 RxD0 PCLDI Input 78* SCK0 SCK0 Output Serial I/O clock output (not used). 79 P33 _ELON Output EL lighting control output L. 80 P34 LEDCTB Output 81 P35 _STOP 82 P36 LEDCTR Output 83 P77 DCNT Output Mechanism driver enable output. 84 P76 BATON Output Battery power supply line ON/OFF. 85 P75 LDON Output P.C. laser ON/OFF control output. 86 P74 PBLAT Output Audio PC data clock output. 87 P73 PCNT3 Output _DC IN input control output. 88 P72 DCON Output DC power supply line ON/OFF. 89 P71 PCNT2 Output START Tr ON/OFF. 90 P70 EMPH0 Output Audio output emphasis control 0. 91 PG0/IRQ6 _PLAY Input Unit PLAY button operation detection input. 92 PG1/IRQ7 _REC Input Unit REC button operation detection. 93 PG2 _XRST Output System LSI hard reset output. 94 PG3 CKSTP Output Microcomputer standby operation monitor. 95 PG4 LEDCTG Output LED lighting control (Yellow-green). 96 PE0 _EPCS Output EEPROM chip selection output. 97 PE1 EEPD Input/Output 98 PE2 EEPK Output EEPROM serial clock output. 99 PE3 EPRT Output EEPROM write protection control output. 100 PE4 PCNT1 Output System power supply ON/OFF control output. Input Sub clock. Positive power supply. Flash write enable. Remote control PLAY button operation detection input. Remote control indication data/PC link data output. PC link data input. LED lighting control (Blue). Unit stop button control detection input. LED lighting control (Orange). EEPROM serial data input/output. In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside. – 42 – MD-MT877/MD-MT877C IC201 VHiLR378161-1 :Endec/Servo/Atrac (LR378161) System LSI expansion output port Pin No. Port Name Terminal Name Input/Output Function Remarks 56* EXPORT4 Undecided justice Output Not used Not used 57 EXPORT5 LDCNT1 Output Recording head raising-lowering control output 0. See the separate table *3. 58 EXPORT6 LDCNT2 Output Recording head raising-lowering control output 1. See the separate table *3. 59 EXPORT7 EMPH1 Output Audio emphasis control output 1. See the separate table *2. 78 EXPORT3 HDON Output Recording head. 'H': Record electric current 79 EXPORT2 OPTCNT Output Optical digital input circuit ON/OFF control. 'H': Circuit operation ON 80 EXPORT0 DAPON Output D/A converter operation control output. 'H': Operation ON 81 EXPORT1 ADPON Output A/D converter operation control output. 'H': Operation ON In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside. *1: List of TEST port settings *2: List of EMPH port settings EMPH1 EMPH0 Normal mode H H L No adjustment mode H H Test mode L L (Settings prohibited) L TEST1 TEST0 H H H L L Details *3: List of LDCNT port settings LDCNT2 LDCNT1 fs=32K: 'ON' H H Brake L fs=48K: 'ON' H L Drive UP H OFF L H Drive DOWN L fs=44.1K: 'ON' L L Output OFF Details – 43 – Details MD-MT877/MD-MT877C —MEMO— – 44 – MD-MT877/MD-MT877C PARTS GUIDE PORTABLE MINIDISC RECORDER MD-MT877(S) MODEL MD-MT877C(S) “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the following information. 1. MODEL NUMBER 2. REF. No. 3. PART NO. 4. DESCRIPTION For U.S.A. only Contact your nearest SHARP Parts Distributor to order. For location of SHARP Parts Distributor, Please call Toll-Free; 1-800-BE-SHARP MARK: SPARE PARTS-DELIVERY SECTION Explanation of capacitors/resistors parts codes Capacitors Resistors VCC ....................... Ceramic type VCK ........................ Ceramic type VCT ........................ Semiconductor type VC • • MF ............... Cylindrical type (without lead wire) VC • • MN ............... Cylindrical type (without lead wire) VC • • TV ................ Square type (without lead wire) VC • • TQ ............... Square type (without lead wire) VC • • CY ............... Square type (without lead wire) VC • • CZ ............... Square type (without lead wire) VC • • • • • • • • • J .. The 13th character represents capacity difference. ("J" ±5%, "K" ±10%, "M" ±20%, "N" ±30%, "C" ±0.25 pF, "D" ±0.5 pF, "Z" +80-20%.) VRD ....................... Carbon-film type VRS ........................ Carbon-film type VRN ....................... Metal-film type VR • • MF ............... Cylindrical type (without lead wire) VR • • MN ............... Cylindrical type (without lead wire) VR • • TV ................ Square type (without lead wire) VR • • TQ ............... Square type (without lead wire) VR • • CY ............... Square type (without lead wire) VR • • CZ ............... Square type (without lead wire) VR • • • • • • • • • J .. The 13th character represents error. ("J" ±5%, "F" ±1%, "D" ±0.5%.) If there are no indications for the electrolytic capacitors, error is ±20%. If there are no indications for other parts, the resistors are ±5% carbon-film type. NOTE: Parts marked with “ ” are important for maintaining the safety of the set. Be sure to replace parts with specified ones for maintaining the safety and performance of the set. MD-MT877/MD-MT877C NO. PRICE RANK PARTS CODE DESCRIPTION PRICE RANK PARTS CODE DESCRIPTION COILS INTEGRATED CIRCUITS IC101 IC200 IC201 IC202 IC251 IC271 IC351 IC353 IC354 IC401 VHIIR3R58M/-1 VHI62GR2522-1 VHILR378161-1 RH-IX2824AFZZ VHIS80808LN-1 VHI75S54FU+-1 VHI74ACT02T-1 VHIFTD2005/-1 VHICPH5608/-1 RH-IX0419AWZZ J J J J J J J J J J AM AG BQ AX AE AG AE AG AH BE IC402 IC404 IC431 IC501 IC601 IC651 IC701 IC703 IC771 IC801 IC821 IC822 IC841 VHI58X2404T-1 VHIN7SZ86P5-1 VHIS80820LN-1 VHIAK4551VT-1 VHIBD6640KV-1 VHILB1938T+-1 VHIIR3R54N/-1 VHIIR3R59N/-1 VHI62GR2322-1 VHIS80814LN-1 VSCPH3413++-1 VHIIR3M14N/-1 VHI6372C281-1 J J J J J J J J J J J J J AF AE AD AU BA AL AQ AN AF AE AE AK AH IC842 IC851 IC852 IC871 IC873 VHI62GR2522-1 VSCPH3413++-1 VHIIR3M14N/-1 VHITC7S86FU-1 VHI62GR4522-1 J J J J J AG AE AK AE AG RF Signal Processor,IR3R58M 2.5V Regulator,62GR2522 Endec/Servo/Atrac,LR378161 16MBit D-RAM,IX2824AF Reset,S-80808LNP OP AMP,FT75S54FU Head Driver,74ACT02FT Head Driver,FTD2005 Head Driver,CPH5608 System Microcomputer, IX0419AW EEPROM,58X2404T Gate IC,N7SZ86P5 Reset,S-80820LNP AD/DA Converter,AK4551VT Moter Drive,BD6640KV Motor Drive,LB1938T Audio Amp.,IR3R54N Audio Amp.,IR3R59N 2.3V Regulator,62GR2322 Reset,S-80814ALNP N-ch MOS FET,CPH3413 DC/DC Converter,IR3M14N 2.8V UP Converter, XC6372C281PR 2.5V Regulator,62GR2522 N-ch MOS FET,CPH3413 DC/DC Converter,IR3M14N Exclusive or Gate,TC7S86FU 4.5V Regulator,62GR4522 TRANSISTORS Q103 Q251 Q252 Q253 VHIFDG312P/-1 VS2SA17457/-1 VSFTD2017++-1 VHIRN4904//-1 J J J J AD AB AL AD Q254 Q261 Q442 Q443 Q493 Q711 Q721 Q801 VS2SA1832GR-1 VHIHN1C01FU-1 VSRN4911+++-1 VS2SC4738GR-1 VS2SA1832GR-1 VSRN1444A//-1 VS2SD1979S+-1 VHIRN4904//-1 J J J J J J J J AC AD AD AC AC AC AC AD Q802 Q803 Q804 Q805 Q806,807 Q821 Q825 Q901 QA01 VSFDN339N++-1 VS2SA17457/-1 VHIHN1C01FU-1 VS2SA1832GR-1 VHIHN1C01FU-1 VHIHN1C01FU-1 VSDTC144EE/-1 VSRN1104///-1 VS2SC4738GR-1 J J J J J J J J J AG AB AD AC AD AD AB AB AC P-ch Power MOS,FDG312 P Silicon,PNP,2SA17457 N-ch MOS FET,FTD2017 Power Select Charge Drive, RN4904 Silicon,PNP,2SA1832 GR Power Transistor,HN1C01 FU Digital Transistor,RN4911 Silicon,NPN,2SC4738 GR Silicon,PNP,2SA1832 GR Digital,NPN,RN1444 A Silicon,NPN,2SD1979 S Power Select Charge Drive, RN4904 N-ch MOS FET,FDN339 N Silicon,PNP,2SA17457 Power Transistor,HN1C01 FU Silicon,PNP,2SA1832 GR Power Transistor,HN1C01 FU Power Transistor,HN1C01 FU Digital,NPN,DTC144 EE Digital,NPN,RN1104 Silicon,NPN,2SC4738 GR VHDSBE803//-1 VHD1SS361//-1 VHD1SS372//-1 VHE015Z5R1Y-1 VHE15AZ7R5Y-1 VHE015Z5R1Y-1 VHE15AZ7R5Y-1 VHEMA8075M/-1 VHDF10J2E//-1 VHDF10J2E//-1 VHDRB521S30-1 VHDD1FH3+++-1 VHDHRB0103B-1 VHDHRB0103B-1 VHDF10J2E//-1 VHDHRB0103B-1 VHDF10J2E//-1 VHDF10J2E//-1 VHPTLGU1008-1 VHPCL190HBX-1 VHPTLOU1008-1 J J J J J J J J J J J J J J J J J J J J J AD AB AD AD AC AD AC AC AC AC AC AE AC AC AC AC AC AC AE AR AE Silicon,SBE803 Silicon,1SS361 Silicon,1SS372 Zener,5.1V,015Z5.1Y Zener,7.5V,15AZ7.5Y Zener,5.1V,015Z5.1Y Zener,7.5V,15AZ7.5Y Zener,7.5V,MA8075M Silicon,F10J2E Silicon,F10J2E Silicon,RB521S30 Schottky,D1FH3 Silicon,HRB0103B Silicon,HRB0103B Silicon,F10J2E Silicon,HRB0103B Silicon,F10J2E Silicon,F10J2E LED,Yellow-green,TLGU1008 LED,Blue,CL190HBX LED,Orange,TLOU1008 DIODES D351 D431 D432 D491 D492 D493 D494 D495,496 D651 D771,772 D801 D821 D822 D831,832 D841 D842 D851,852 D861,862 LEDA02 LEDA03 LEDA04 NO. L100 L103 L171 L202 L204 L452 L453,454 L456~458 L491 L601,602 L603 L604 L608 L702,703 L704 L711 L712~714 L821 L841 L851 VPBNN100K0000 RCILC0353AFZZ RCILC0356AFZZ VPBNN100K0000 RCILC0353AFZZ RCILC0352AFZZ RCILC0353AFZZ RCILC0353AFZZ VRS-TV2AB330J RCILC0372AFZZ RCILC0358AFZZ RCILC0372AFZZ RCILC0356AFZZ RCILC0353AFZZ RCILC0352AFZZ RCILC0352AFZZ RCILC0353AFZZ RCILC0005AWZZ RCILC0358AFZZ RCILC0005AWZZ 10 µH Tip Solid Induction,100mA 10 µH 10 µH Tip Solid Induction,100mA Tip Impeder,150mA Tip Solid Induction,100mA Tip Solid Induction,100mA 33 ohms,1/10W 22 µH,Choke 4.7 µH,Choke 22 µH,Choke 10 µH Tip Solid Induction,100mA Tip Impeder,150mA Tip Impeder,150mA Tip Solid Induction,100mA 10 µH,Choke 4.7 µH,Choke 10 µH,Choke J J J J J J J J J J J J J J J J J J J J AC AB AC AC AB AB AB AB AA AC AC AC AC AB AB AB AB AF AC AF J J AH Crystal,33.8688 MHz AF Ceramic,3.68 MHz J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J AD AC AC AB AC AB AC AB AC AB AB AB AB AB AB AB AD AC AD AD AB AC AB AB AB AB AB AB AB AC AB AC AB AA AD AB AB AB AB AC AB AB AA AC AC AD AB AD AB AC AB AG VIBRATORS XL201 XL401 RCRSC0028AFZZ RCRM-0039AWZZ CAPACITORS C100 C102,103 C106 C107 C108,109 C110 C111 C112 C113 C114 C121,122 C123,124 C130,131 C132,133 C151 C165 C171,172 C200 C201 C202 C203 C204 C205 C207 C209,210 C211 C212 C251,252 C253 C270 C272~274 C291 C292 C351 C353 C354 C357 C361 C401 C431 C451 C454 C491 C492 C493 C500 C501,502 C503 C505,506 C509,510 C511 C600 –1– VCSAPR0JJ106M VCKYCY0JB105K VCKYCY0JB105K VCKYCZ1AB104K VCKYCY0JB105K VCKYCY1AB224K VCKYCY0JB105K VCKYCZ1AB104K VCKYCY0JB105K VCCCCZ1HH5R0C VCKYCZ1HB221K VCKYCZ1HB331K VCKYCZ1AB104K VCKYCY1AB224K VCKYCZ1CB103K VCKYCZ1AB333K RC-SZ0002AWZZ VCKYCY0JB105K VCSAPR0JJ106M VCSATK0JJ476M VCKYCZ1AB104K VCKYCY1AB474K VCKYCZ1AB104K VCKYCZ1AB104K VCKYCZ1AB104K VCCCCZ1HH5R0C VCCCCZ1HH8R0D VCKYCZ1AB104K VCKYCZ1CB103K VCKYCY0JB105K VCKYCZ1AB104K VCKYCY0JB105K VCKYCZ1CB103K VCCCCY1HH470J VCSAPR0JJ106M VCKYCZ1AB104K VCKYCZ1AB104K VCKYTV1HB393K VCKYCZ1AB104K VCKYCY1AB474K VCKYCY1EB223K VCKYCZ1HB222K VCKYTV1CB104K VCKYCY0JB105K VCKYCY1AB474K VCSAPR0JJ106M VCKYCZ1HB222K VCSAPR1AJ335M VCKYCZ1HB102K VCKYCY0JB105K VCKYCZ1AB104K RC-SZ0001AWZZ 10 µF,6.3V,Electrolytic,Tantalum 1 µF,6.3V 1 µF,6.3V 0.1 µF,10V 1 µF,6.3V 0.22 µF,10V 1 µF,6.3V 0.1 µF,10V 1 µF,6.3V 5 pF (CH),50V 220 pF,50V 330 pF,50V 0.1 µF,10V 0.22 µF,10V 0.01 µF,16V 0.033 µF,10V 33 µF,6.3V,Electrolytic 1 µF,6.3V 10 µF,6.3V,Electrolytic,Tantalum 47 µF,6.3V,Electrolytic,Tantalum 0.1 µF,10V 0.47 µF,10V 0.1 µF,10V 0.1 µF,10V 0.1 µF,10V 5 pF (CH),50V 8 pF (CH),50V 0.1 µF,10V 0.01 µF,16V 1 µF,6.3V 0.1 µF,10V 1 µF,6.3V 0.01 µF,16V 47 pF (CH),50V 10 µF,6.3V,Electrolytic,Tantalum 0.1 µF,10V 0.1 µF,10V 0.039 µF,50V 0.1 µF,10V 0.47 µF,10V 0.022 µF,25V 0.0022 µF,50V 0.1 µF,16V 1 µF,6.3V 0.47 µF,10V 10 µF,6.3V,Electrolytic,Tantalum 0.0022 µF,50V 3.3 µF,10V,Electrolytic,Tantalum 0.001 µF,50V 1 µF,6.3V 0.1 µF,10V 22 µF,6.3V,Electrolytic,Tantalum MD-MT877/MD-MT877C NO. C601~604 C605 C608 C652 C701,702 C703 C711,712 C713,714 C715 C721,722 C723,724 C725,726 C731 C733,734 C753,754 C758 C760 C763,764 C765,766 C771 C773 C774~776 C817 C821 C822 C823 C825 C826,827 C828 C830 C832,833 C834 C836 C837 C838 C839 C840 C841 C842 C843 C844 C845,846 C847,848 C850 C851 C852 C856 C857 C858~860 C862,863 C869 C876 C881 C901 C902 C905~907 C908 C909,910 C911,912 CA01,02 PRICE RANK PARTS CODE VCKYCY0JB105K VCKYCZ1AB104K VCKYTV1AB105K VCKYCZ1AB104K VCSAPR0JJ106M VCKYCZ1CB103K VCCCCZ1HH101J VCKYCY0JB105K VCKYCZ1AB104K VCSAPR1AJ335M VCKYCZ1HB102K VCSAPR1AJ335M VCKYCY1AB224K VCKYCZ1AB104K VCKYCY0JB105K VCKYCY0JB105K VCKYCZ1AB104K VCKYCY0JB105K VCKYCY1AB224K VCSATE0JJ476M VCKYCY1AB224K VCKYCY0JB105K VCKYCZ1AB104K VCKYTQ1AB335K RC-SZ0001AWZZ VCEAPW0GW227M VCKYCY0JB105K VCCCCZ1HH820J VCKYCY0JB105K VCKYCY0JB105K VCKYCY1CB104K VCKYCZ1AB104K VCKYCY1AB474K VCKYCY0JB105K VCKYCY1CB104K VCKYCY1AB334K VCEAPW0GW227M VCKYCY0JB105K RC-SZ0002AWZZ VCKYCY1AB224K VCSAPR0JJ106M VCKYCZ1AB104K VCKYCY0JB105K VCKYCZ1AB104K VCKYTQ1AB335K RC-SZ0001AWZZ VCCCCZ1EH151J VCCCCZ1HH330J VCKYCY0JB105K VCKYCY0JB105K VCSATE0JJ476M VCKYCY0JB105K VCKYCZ1AB273K VCKYCY0JB105K VCKYCZ1CB103K VCKYCZ1HB222K VCKYCY1AB334K VCKYCZ1AB473K VCKYCZ1AB104K VCKYCY1CB104K DESCRIPTION NO. J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J AC AB AD AB AD AB AB AC AB AD AB AD AB AB AC AC AB AC AB AD AB AC AB AF AG AD AC AB AC AC AB AB AC AC AB AC AD AC AD AB AD AB AC AB AF AG AB AB AC AC AD AC AB AC AB AB AC AB AB AB 1 µF,6.3V 0.1 µF,10V 1 µF,10V 0.1 µF,10V 10 µF,6.3V,Electrolytic,Tantalum 0.01 µF,16V 100 pF (CH),50V 1 µF,6.3V 0.1 µF,10V 3.3 µF,10V,Electrolytic,Tantalum 0.001 µF,50V 3.3 µF,10V,Electrolytic,Tantalum 0.22 µF,10V 0.1 µF,10V 1 µF,6.3V 1 µF,6.3V 0.1 µF,10V 1 µF,6.3V 0.22 µF,10V 47 µF,6.3V,Electrolytic,Tantalum 0.22 µF,10V 1 µF,6.3V 0.1 µF,10V 3.3 µF,10V 22 µF,6.3V,Electrolytic,Tantalum 220 µF,4.0V,Electrolytic 1 µF,6.3V 82 pF (CH),50V 1 µF,6.3V 1 µF,6.3V 0.1 µF,16V 0.1 µF,10V 0.47 µF,10V 1 µF,6.3V 0.1 µF,16V 0.33 µF,10V 220 µF,4.0V,Electrolytic 1 µF,6.3V 33 µF,6.3V,Electrolytic,Tantalum 0.22 µF,10V 10 µF,6.3V,Electrolytic,Tantalum 0.1 µF,10V 1 µF,6.3V 0.1 µF,10V 3.3 µF,10V 22 µF,6.3V,Electrolytic,Tantalum 150 pF (CH),25V 33 pF (CH),50V 1 µF,6.3V 1 µF,6.3V 47 µF,6.3V,Electrolytic,Tantalum 1 µF,6.3V 0.027 µF,10V 1 µF,6.3V 0.01 µF,16V 0.0022 µF,50V 0.33 µF,10V 0.047 µF,10V 0.1 µF,10V 0.1 µF,16V J J J J J J J J J J J J J J J J J J J AB AB AB AA AA AA AA AA AA AA AA AA AB AA AA AB AA AB AA 0 ohm,Jumper,0.5×1.0mm 22 kohms,1/16W 12 kohms,1/16W 220 kohms,1/16W 150 kohms,1/16W 1 Mohm,1/16W 150 kohms,1/16W 1 Mohm,1/16W 56 kohms,1/16W 390 kohms,1/16W 56 kohms,1/16W 390 kohms,1/16W 39 kohms,1/16W 390 kohms,1/16W 100 kohm,1/16W 1.2 kohms,1/16W 100 kohm,1/16W 1 kohm,1/16W 27 kohms,1/16W RESISTORS R101~104 R111 R112 R131 R132 R133 R134 R135 R136 R137 R138 R139 R140 R151 R161 R200 R204 R205 VRS-CZ1JB000J VRS-CZ1JB223J VRS-CZ1JB123J VRS-CZ1JB224J VRS-CZ1JB154D VRS-CZ1JB105D VRS-CZ1JB154D VRS-CZ1JB105D VRS-CZ1JB563D VRS-CZ1JB394D VRS-CZ1JB563D VRS-CZ1JB394D VRS-CZ1JB393J VRS-CZ1JB394J VRS-CZ1JB104J VRS-CZ1JB122J VRS-CZ1JB104D VRS-CZ1JB102J VRS-CZ1JB273D –2– R206 R207 R222 R251 R252 R253 R254 R255 R256 R257 R258 R259 R261 R262 R263 R264 R271,272 R273 R274 R275 R276 R277 R278 R281 R282 R291 R292 R351 R361 R402 R403 R404 R405 R406 R407,408 R411 R412 R413~416 R422 R423 R424,425 R431 R441 R442 R445 R461 R462 R463 R464 R492 R495 R496 R501,502 R701,702 R703 R710 R711,712 R713,714 R715,716 R717,718 R719,720 R723,724 R725 R726 R727 R728 R729,730 R731~733 R754 R757 R758 R761 R762 R765,766 R801 R802 R803 R804 R805 R806,807 R808 R809 PRICE RANK PARTS CODE VRS-CZ1JB104D VRS-CZ1JB681J VRS-CZ1JB105J VRS-CZ1JB220J VRS-CZ1JB564J VRS-CZ1JB333J VRS-CZ1JB105J VRS-CZ1JB564J VRS-CZ1JB104J VRS-CZ1JB105J VRS-CZ1JB334J VRS-CZ1JB222J VRS-CZ1JB105J VRS-CZ1JB334J VRS-CZ1JB104J VRS-CZ1JB101J VRS-CZ1JB474D VRS-CZ1JB473D VRS-CZ1JB563D VRS-CZ1JB153D VRS-CZ1JB124D VRS-CZ1JB222J VRS-CZ1JB220J VRS-CZ1JB102J VRS-CZ1JB473J VRS-CZ1JB222J VRS-CZ1JB104J VRS-TV2AB3R9J VRS-TQ2BB150J VRS-CZ1JB104D VRS-CZ1JB102J VRS-CZ1JB104J VRS-CZ1JB103J VRS-CZ1JB223J VRS-CZ1JB104J VRS-CZ1JB104J VRS-CZ1JB153J VRS-CZ1JB102J VRS-CZ1JB104J VRS-CZ1JB223D VRS-CZ1JB223J VRS-CZ1JB334J VRS-CZ1JB121J VRS-CZ1JB821J VRS-CZ1JB103J VRS-CZ1JB104J VRS-CZ1JB223J VRS-CZ1JB104J VRS-CZ1JB224J VRS-CZ1JB102J VRS-CZ1JB102J VRS-CZ1JB220J VRS-CZ1JB471J VRS-CZ1JB101J VRS-CZ1JB104J VRS-CZ1JB470J VRS-CZ1JB682J VRS-CZ1JB103J VRS-CZ1JB104J VRS-CZ1JB102J VRS-CZ1JB682J VRS-CZ1JB682J VRS-CZ1JB101J VRS-CZ1JB393J VRS-CZ1JB822J VRS-CZ1JB102J VRS-CZ1JB472J VRS-CZ1JB473J VRS-CZ1JB184J VRS-CZ1JB222J VRS-CZ1JB101J VRS-CZ1JB394J VRS-CZ1JB104J VRS-CZ1JB150J VRS-CZ1JB473J VRS-CZ1JB104J VRS-CZ1JB102J VRS-CZ1JB334J VRS-CZ1JB105J VRS-CZ1JB104J VRS-CZ1JB564J VRS-CZ1JB473J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J AA AB AB AB AA AB AB AA AA AB AA AB AB AA AA AB AA AA AA AA AB AB AB AB AA AB AA AA AA AA AB AA AA AB AA AA AA AB AA AB AB AA AB AA AA AA AB AA AA AB AB AB AA AB AA AB AB AA AA AB AB AB AB AB AA AB AB AA AB AB AB AA AA AB AA AA AB AA AB AA AA AA DESCRIPTION 100 kohm,1/16W 680 ohms,1/16W 1 Mohm,1/16W 22 ohms,1/16W 560 kohms,1/16W 33 kohms,1/16W 1 Mohm,1/16W 560 kohms,1/16W 100 kohm,1/16W 1 Mohm,1/16W 330 kohms,1/16W 2.2 kohms,1/16W 1 Mohm,1/16W 330 kohms,1/16W 100 kohm,1/16W 100 ohm,1/16W 470 kohms,1/16W 47 kohms,1/16W 56 kohms,1/16W 15 kohms,1/16W 120 kohms,1/16W 2.2 kohms,1/16W 22 ohms,1/16W 1 kohm,1/16W 47 kohms,1/16W 2.2 kohms,1/16W 100 kohm,1/16W 3.9 ohms,1/10W 15 ohms,1/8W 100 kohm,1/16W 1 kohm,1/16W 100 kohm,1/16W 10 kohm,1/16W 22 kohms,1/16W 100 kohm,1/16W 100 kohm,1/16W 15 kohms,1/16W 1 kohm,1/16W 100 kohm,1/16W 22 kohms,1/16W 22 kohms,1/16W 330 kohms,1/16W 120 ohms,1/16W 820 ohms,1/16W 10 kohm,1/16W 100 kohm,1/16W 22 kohms,1/16W 100 kohm,1/16W 220 kohms,1/16W 1 kohm,1/16W 1 kohm,1/16W 22 ohms,1/16W 470 ohms,1/16W 100 ohm,1/16W 100 kohm,1/16W 47 ohms,1/16W 6.8 kohms,1/16W 10 kohm,1/16W 100 kohm,1/16W 1 kohm,1/16W 6.8 kohms,1/16W 6.8 kohms,1/16W 100 ohm,1/16W 39 kohms,1/16W 8.2 kohms,1/16W 1 kohm,1/16W 4.7 kohms,1/16W 47 kohms,1/16W 180 kohms,1/16W 2.2 kohms,1/16W 100 ohm,1/16W 390 kohms,1/16W 100 kohm,1/16W 15 ohms,1/16W 47 kohms,1/16W 100 kohm,1/16W 1 kohm,1/16W 330 kohms,1/16W 1 Mohm,1/16W 100 kohm,1/16W 560 kohms,1/16W 47 kohms,1/16W MD-MT877/MD-MT877C NO. R810 R812 R813 R814 R815~817 R818 R821 R822 R823 R824 R825 R826 R827 R828 R829 R831,832 R833 R834 R841 R844 R850 R853 R854 R855 R857 R871 R881 R882 R903 R904 R905 R906 R907 R908 R909 R920 RA01 RA02 RA03 RA04 RA05 RA06 RA07 RA08 RA12 RA13,14 RA15 RA16 PRICE RANK PARTS CODE VRS-CZ1JB223J VRS-CZ1JB104J VRS-CZ1JB222J VRS-CZ1JB273J VRS-CZ1JB104J VRS-CZ1JB473J VRS-CZ1JB222J VRS-CZ1JB104J VRS-CZ1JB274J VRS-CZ1JB103J VRS-CZ1JB394D VRS-CZ1JB395J VRS-CZ1JB274D VRS-CZ1JB222J VRS-CZ1JB104J VRS-CZ1JB184D VRS-CZ1JB470J VRS-CZ1JB155J VRS-CZ1JB104J VRS-CZ1JB470J VRS-CZ1JB223J VRS-CZ1JB274J VRS-CZ1JB103J VRS-CZ1JB184D VRS-CZ1JB564D VRS-CZ1JB103J VRS-CZ1JB183J VRS-CZ1JB103J VRS-CZ1JB471J VRS-CZ1JB103J VRS-CZ1JB104J VRS-CZ1JB274J VRS-CZ1JB184J VRS-CZ1JB104J VRS-CZ1JB103J VRS-CZ1JB104J VRS-CY1JB562J VRS-CY1JB822J VRS-CY1JB183J VRS-CY1JB563J VRS-CY1JB562J VRS-CY1JB822J VRS-CY1JB183J VRS-CY1JB563J VRS-CY1JB333F VRS-CY1JB183F VRS-CY1JB103J VRS-CY1JB331J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J DESCRIPTION AB AA AB AA AA AA AB AA AB AA AA AA AK AB AA AB AB AA AA AB AB AB AA AB AA AA AA AA AA AA AA AB AB AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA 22 kohms,1/16W 100 kohm,1/16W 2.2 kohms,1/16W 27 kohms,1/16W 100 kohm,1/16W 47 kohms,1/16W 2.2 kohms,1/16W 100 kohm,1/16W 270 kohms,1/16W 10 kohm,1/16W 390 kohms,1/16W 3.9 Mohms,1/16W 270 kohms,1/16W 2.2 kohms,1/16W 100 kohm,1/16W 180 kohms,1/16W 47 ohms,1/16W 1.5 Mohms,1/16W 100 kohm,1/16W 47 ohms,1/16W 22 kohms,1/16W 270 kohms,1/16W 10 kohm,1/16W 180 kohms,1/16W 560 kohms,1/16W 10 kohm,1/16W 18 kohms,1/16W 10 kohm,1/16W 470 ohms,1/16W 10 kohm,1/16W 100 kohm,1/16W 270 kohms,1/16W 180 kohms,1/16W 100 kohm,1/16W 10 kohm,1/16W 100 kohm,1/16W 5.6 kohms,1/16W 8.2 kohms,1/16W 18 kohms,1/16W 56 kohms,1/16W 5.6 kohms,1/16W 8.2 kohms,1/16W 18 kohms,1/16W 56 kohms,1/16W 33 kohms,1/16W 18 kohms,1/16W 10 kohm,1/16W 330 ohms,1/16W AM AG AF AF AE AT AG AL AW AT AW AE AF AC AC AC AC AC AC AC AC AC AC AC AC AE Socket,22Pin Socket,14Pin Socket,11Pin Socket,7Pin Square Tip Type Fuse,0.4A,DC60V Jack,Optical/Line Jack,Mic In Jack,Remote Control/Earphones Motor [Spindle] Motor [Sled] Motor [Lift] Switch,Key Type [Eject] Switch,Push Type [Disc Protect] Switch,Key Type [Record] Switch,Key Type [Play] Switch,Key Type [Bass] Switch,Key Type [Edit] Switch,Key Type [Display] Switch,Key Type [Volume -] Switch,Key Type [Volume +] Switch,Key Type [Stop] Switch,Key Type [Mode] Switch,Key Type [Fast Reverse] Switch,Key Type [Fast Forward] Switch,Key Type [Enter] Switch,Push Type [Open/Close] OTHER CIRCUITRY PARTS CN101 CN451 CN601 CNA01 1 F841 J701 J702 J703 M901 M902 M903 SW401 SW901 SWA01 SWA02 SWA03 SWA04 SWA05 SWA06 SWA07 SWA08 SWA09 SWA10 SWA11 SWA12 SWA13 QCNCW046XAWZZ J QCNCW862PAFZZ J QCNCW862LAFZZ J QCNCW047GAWZZ J QFS-L401AAFNZ J VHLGP1FD202-1 J QJAKM0018AWZZ J QJAKM0015AWZZ J RMOTV0031AWZZ J RMOTS0002AWZZ J RMOTV0033AWZZ J QSW-M0010AWZZ J QSW-M0008AWZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-K0237AFZZ J QSW-M0009AWZZ J MD MECHANISM PARTS 1 2 NGERH0125AWZZ J NSFTD0007AWZZ J NO. 3 14 5 6 7 9 10 11 12 13 14 15 16 17 501 502 503 504 505 506 507 508 M901 M902 M903 PRICE RANK PARTS CODE RCILH0003AWM1 RCTRH8210AFZZ QPWBH0010AWZZ LHLDX3008AWM2 MLEVF0058AWFW MSPRT0041AWFJ LANGK0211AWZZ LCHSM0107AWM1 MSPRP0044AWFJ MLEVF0056AWFW MLEVF0057AWFW NGERH0096AWZZ MSPRP0043AWFJ NBRGC0004AWZZ LX-BZ0049AWZZ LX-BZ0050AWZZ LX-BZ0051AWZZ LX-BZ0823AFZZ LX-JZ0027AWZZ LX-JZ0167AFZZ LX-WZ9290AFZZ LX-WZ9296AFZZ RMOTV0031AWZZ RMOTS0002AWZZ RMOTV0033AWZZ J J J J J J J J J J J J J J J J J J J J J J J J J AT BM AH AM AD AB AC AL AB AC AC AC AB AB AB AB AB AA AA AB AA AA AW AT AW DESCRIPTION Magnetic Head Ass’y Optical Pickup Mechanism Flexible PWB Cartridge Holder Ass’y Lift Lever Spring,Eject Lever Bracket,Cancel Main Chassis Ass’y Spring,Thrust Plate Lift Connection Lever Lift Working Lever Gear,Drive Spring,Grip Metal Screw,ø1.4×1.8mm Screw,ø1.4×2.5mm Screw,ø1.4×3.8mm Screw,ø1.4×1.2mm Screw,ø1.7×3.5mm Screw,ø1.4×3.0mm Washer,ø0.8×ø2.4×0.25mm Washer,ø1.5×ø3.5×0.25mm Motor [Spindle] Motor [Sled] Motor [Lift] CABINET PARTS 201 202 GCABA3008AWM1 J GCABB3010AWM1 J 202 GCABB3013AWM1 J 203 204 205 207 208 209 210 212 213 214 215 216 217 218 219 220 221 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 601 602 603 604 GCABA1213AWSA GFTAB1029AWSA HDECQ0649AWSA PSHEZ0095AWZZ GMADI0007AWSA GMADI0008AWSA GMADI0009AWSA LANGT0072AWFW JKNBZ0757AWSA JKNBZ0758AWSA HDECQ0650AWSA LHLDZ1291AWZZ RUNTZ0025AWZZ JKNBK0081AWSA LHLDZ3017AWM2 LANGZ0031AWM2 LHLDZ1282AWZZ GCOVH1021AWZZ GCOVH1020AWZZ QTANB9028AWFQ QTANB9032AWFQ PSHEZ0085AWZZ LANGT0080AWFW GCOVH1023AWSA PSHEZ0098AWZZ PSHET0046AWZZ PSPAZ0031AWZZ PCUSG0068AWZZ QTANB9029AWFQ PSHEZ0105AWZZ PSPAZ0028AWZZ PSPAZ0027AWZZ PSHET0052AWZZ PSHET0053AWZZ PSHET0059AWZZ PCUSG0078AWZZ PSHET0060AWZZ LX-BZ0047AWFC LX-BZ0048AWFN LX-BZ1008AFFC LX-BZ0800AFZZ J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J BA Top Cabinet Ass’y AU Bottom Cabinet Ass’y [MD-MT877 (S)] Bottom Cabinet Ass’y [MD-MT877C (S)] AM Center Cabinet AE Cover,Battery AL Decoration Plate AE Sheet,Button AC LED Window A AC LED Window B AC LED Window C AB Bracket,Center Cabinet AQ Button,Operation A AK Button,Operation B AF Decoration Plate AF Holder,LCD BB LCD Ass’y AE Knob,Eject AQ Main Frame Ass’y AG Battery Terminal,+ AF Holder,Battery AB Cover,Extension Terminal B AB Cover,Extension Terminal A AC Extension Terminal,A AG Battery Terminal,AC Sheet,Insulation AC Bracket,Lock AB Cover,Charging Stand AB Sheet,Flexible PWB Protection AD Sheet,PWB AB Spacer,PWB B AB Cushion,Terminal AC Charging Stand Terminal AA Sheet,Main Frame AA Spacer,PWB A AB Spacer,Main Frame AC Sheet,Button Guide AA Sheet,Button AA Sheet,Open/Close Button Cushion,Bracket Sheet,Button AB Screw,ø1.4×1.5mm AC Screw,ø1.4×2.5mm AB Screw,ø1.4×2mm AA Screw,ø1.4×2.5mm PACKING PARTS (MD-MT877 (S) Except for U.S.A./MD-MT877C (S) for Canada) SPAKA0284AWZZ SPAKC1155AWZZ SPAKC1229AWZZ AB Wheel,Drive AL Screw,Drive –3– J J J AE Packing Add. Packing Case [MD-MT877 (S)] Packing Case [MD-MT877C (S)] MD-MT877/MD-MT877C NO. PRICE RANK PARTS CODE SPAKZ0630AWZZ SPAKZ0692AWZZ SSAKA0009AWZZ J J J DESCRIPTION NO. Pad,AC Adaptor AB Sheet,Bubble AA Polyethylene Bag,Battery Charger ACCESSORIES 1 GCASZ0002AWSA J QCNWG0029AWZZ J AL QCNWG0382AFZZ J AK QCNWG0422AFZZ RADPA3048AWZZ RPHOH0176AFSA RRMCW0011AWSA AQ AW AT BK J J J J RRMCW0012AWSA J RUNTZ0032AWM1 J TINSK0115AWZZ J BL AH TINSZ0639AWZZ TINSZ0640AWZZ TLABZ0695AWZZ UBAGC0005AWZZ UBAGC0006AWSA UBATM0006AWSA AE AC AA AD AH AY J J J J J J Battery Case Connecting Cord,RCA Type (From Serial No.105×××××) Connecting Cord,RCA Type (To Serial No.104×××××) Connecting Cord,Optical Type AC Adaptor Earphones Remote Control (To Serial No.102×××××) Remote Control (From Serial No.103×××××) Battery Charger Operation Manual [MD-MT877C (S)] Operation Manual [MD-MT877 (S)] Quick Guide [MD-MT877 (S)] Label,Caution (Battery Case) Battery Carrying Case Carrying Case Battery P.W.B. ASSEMBLY (Not Replacement Item) PWB-A PWB-B 92LPWB3664MDSS J 92LPWB3532KEYS J — — Main LCD/Key OTHER SERVICE PARTS UDSKM0001AFZZ 88GMMD-110 J J 88GMMD-213A J AZ Recording Mini Disc BV High Reflection Disc MMD-110 (TEAC Test MD) BT Low Reflection Disc MMD-213A (TEAC Test MD) BATTEY CHARGER PARTS 22 22- 1 22- 2 RUNTZ0032AWM1 J GCABA1223AW01 J ———— BL 22- 3 22- 4 22- 5 22- 6 22- 7 22- 8 22- 9 LHLDZ1283AWSA LHLDZ1285AWSA GLEGG0002AWZZ GLEGG0003AWZZ XEBSN20P05000 TLABM0107AWZZ TLABZ0855AWZZ AE AF AB AB AA J J J J J J J — Battery Charger Front Cabinet Back Cabinet Unit (Not Replacement Unit) Remote Control Stand Stand Cushion A Cushion B Screw,ø2×5mm Label,Specifications Label,Caution –4– PARTS CODE PRICE RANK DESCRIPTION MD-MT877/MD-MT877C 501x2 501 506x3 16 A 504x2 M901 502 B 3 10 M902 505 12 4 C 503 507 2 M903 15 17 1 D 14 E 6 11 508 13 F G 9 7 5 H 1 2 3 4 Figure 5 MD MECHANISM EXPLODED VIEW –5– 5 6 MD-MT877/MD-MT877C MD MECHANISM 205 A 603x2 B 201 OP EN 203 218 236 603x2 235 237 C 219 220 207 209 221 210 204 EN OP 208 D 212 241 212 223x2 601 212x3 224x2 MAIN PWB 213 601 225x4 226 E 214 242 216 215 232 233 602 227 234 F 228 217 229 230 238 G 603x2 239x3 603 LCD PWB 202 240 236 231 603 601 604x4 H 603 603 1 2 3 4 Figure 6 CABINET EXPLODED VIEW –6– 5 6 MD-MT877/MD-MT877C A 22-1 B 22-7 22-6 22-3 C 22-7 22-4 22 D 22-8 22-5x2 E 22-2 F 22-5x2 G 22-9 H 1 2 3 4 Figure 7 BATTERY CHARGER EXPLODED VIEW –7– 5 6 MD-MT877/MD-MT877C PACKING OF THE SET (MD-MT877(S) FOR U.S.A. ONLY) Setting position of switches and knobs Remote Control HOLD CANCEL Operation Manual Connecting Cord, Optical Type Quick Guide Carrying Case Sheet, Bubble SPAKZ0692AWZZ Battery Label, Caution Battery Case Remote Control AC Adaptor Packing Add. SPAKA0284AWZZ Connecting Cord, RCA Type Battery Carrying Case AC Adaptor Pad SPAKZ0630AWZZ Earphones Battey Charger Polyethylene Bag, Battey Charger SSAKA0009AWZZ Packing Case SPAKC1155AWZZ –8– :Not Replacement Item MD-MT877/MD-MT877C —MEMO— –9– MD-MT877/MD-MT877C —MEMO— – 10 – MD-MT877/MD-MT877C COPYRIGHT © 2001 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. SHARP CORPORATION Communication Systems Group Quality & Reliability Control Center Higashihiroshima, Hiroshima 739-0192, Japan Printed in Japan A0103-1267DS•HA•M SC • LAG • SL