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ACER ACER_LCD_X223W_SM072301V1 Service Model ID: R22ANUW-M1 Service Manual Table of Contents Important Safety Notice------------------------------------------------------------------------------------- 01 01. Product Specification--------------------------------------------------------------------------------- 02 02. OSD Menu-----------------------------------------------------------------------------------------------08 03. Exploded Diagram ------------------------------------------------------------------------------------- 10 04. Assembly and Disassembly Procedures-----------------------------------------------------------12 05. Troubleshooting----------------------------------------------------------------------------------------20 06. Schematics and Layouts------------------------------------------------------------------------------ 30 Appendix I : User’s Manual Appendix II: Quick Setup Guide Appendix III : Spare Parts Llist Safety Notice Any person attempting to service this chassis must familarize with the chassis and be aware of the necessary safety precautions to be used when serving electronic equipment containing high voltage. Published by LITE-ON Service Printed in Taiwan © All rights reserved Subject to modification 23th-Jul-2007 Important Safety Notice ACER X223W Go to cover page Product Anouncement: This product is certificated to meet RoHS Directive and ! Using Lead-Free solder to well mounted the parts. Lead-Free produced definition. Using approved critical ! The fusion point of Lead-Free solder requested in the components only is recommended when the situation to replace defective parts. Vender assumes no liability express or implied, arising out of any unauthorized modification of design or replacing non-RoHS parts. Service providers assume all liability. Qualified Repairability: Proper service and repair is important to the safe, reliable operation of all series products. The service providers recommended by vender should being aware of notices listed in this service manual in order to minimize the risk of personal injury when perform service procedures. Furtermore, the possibile existed improper repairing method may damage equipment or products. It is recommended that service engineers should have repairing knowledge, experience, as well as appropriate product training per new model before performing the service procedures. NOTICE: ! To avoid electrical shocks, the products should be connect to an authorized power cord, and turn off the master power switch each time before removing the AC power cord. ! To prevent the product away from water or explosed in extremely high humility environment. ! To ensure the continued reliability of this product, use only original manufacturer’s specified parts. ! To ensure following safty repairing behavior, put the replaced part on the components side of PWBA, not solder side. ! To ensure using a proper screwdriver, follow the torque and force listed in assembly and disassembly procedures to screw and unscrew screws. degree of 220 ° C. 1 2 ACER X223W 1. Product Specification Go to cover page The LCD monitor consists of an interface board , a power board 1.1 SCOPE This document defines the design and performance , a function key board and two speaker (1W)(with audio) requirements for an 20/22W inch diagonal , flat panel The interface board will house the flat panel control logic , monitor .The display element shall be a WSXGA brightness control logic, audio function control (option), key (1680x1050) resolution TFT-LCD (Thin Film Transistor function control, DDC and DC to DC conversion to supply the Liquid Crystal Display).16.7M color(RGB 6bits+FRC) appropriate power to the whole board and LCD flat panel , and images are displayed on the panel.Video input signals are transmitting LVDS signals into LCD flat panel module to drive analog RGB (0.7Vp-p). When the systemis powered-on , the LCD display circuit . previously stored screen parameters for a pre-defined The power board will support main power DC5V to interface mode will be recalled if the operating mode is one of stored board, and the power DC5.3V to audio function power of in memory( 19 factory , 9 users timing ).This monitor interface board,and drive the two CCFLs (Cold Cathode operates normal by non-interlaced mode. DDC (Display Fluorescent Tube).The interface board provides the power ON / Data Channel) function is DDC2Bi compliance Power OFF control over the whole monitor and control for DPMS LED saving function complies with the DPMS (Display Power indicator to function key board. Management Signaling) standard. MONITOR SPECIFICATIONS 1.2 GENERAL REQUIREMENTS ITEM 1.2.1 Test Condition Signal Input SPEC Analog : H : 30kHz~81kHz V : 56Hz~76Hz Frequency (Analog) Brightness level & contrast level max. Full white pattern test mode following spec. Warm up more than Pixel clock 165MHz (Max) 1 hr, ambient light < 10 Lux , Luminance meter CA110 Video Input Analog Display Pixels 640 x 480 (VGA) ~ 1680 x 1050 (WSXGA) Sync Signal Separate SYNC for TTL (N or P) or BM7 or same equipment . 1.2.2 Test Equipment Signal Input The reference signal source is a calibrated Chroma Digital : H : 30kHz~81kHz Frequency (Digital) V : 56Hz~76Hz Pixel clock 165MHz (Max) Video Input 2135 video generator or higher.The use of other 0.7Vp-p Analog 0.7Vp-p Input Impedance 75Ω signal generators during qualification and production is acceptable provided the product complies with this specification. Connector 640 x 480 (VGA) ~ 1680 x 1050 (WSXGA) AC100V ~ AC240V ± 10% 50/60Hz , 3 pin AC power cord Input connector D-SUB 15 pin & DVI-D Audio Jack Audio input 3.6F (OPTIONAL) Power Consumption AC in 100V~240V User's Control Front Empowering,Auto Adjust,Adjust(-),Adjust (+),Menu,Power OSD Contrast , Brightness , Position ,Clock ,Phase ,Analog/Digital,RESET, Color , Language select , Audio (option), etc. Factory 19 1.3 ELECTRICAL This section describes the electricalrequirement of the Display Pixels AC Input Pre-Defined Timing monitor.The block diagram in Figure1 illustrates the various User Plug and Play electrical sub-system. Active 48W (with Audio), active 38W, power saving < 2W 9 VESA DDC2Bi Power Saving VESA DPMS Input Signal Counter Tolerance ≦ H ± 1kHz, ≦ V ± 1 Hz 1.3.1 Interface Connectors 1.3.1.1 Power Connector and Cables Figure 1 Monitor Block Diagram The AC input shall have an IEC/CEE-22 type male power receptacle for connection to mains power. CCFT Drive LCD Flat Panel Panel data & control, DC power The power cord shall be with length of 1.8+/-0.005 meters. Power Board 1.3.1.2 Video Signal Connectors and Cable DC 5V DC 5.3V (Audio) AC to DC Adapter, DC to DC Converter, DC to AC Inverter. Inverter control Speaker line input Audio Source shielded,triple row, 15 position, D-subminiature Host Computer Function key input AC - IN Audio line input (Option) At the end of the cable shall be a molded-over, Audio AM P. (Option) Video Signal input & DDC 1W*2 Speaker The signal cable shall be 1.8 +/-0.005 meters long. Interface Board Flat Panel Controller, DDC Function Key Board connector. The CPU connection shall have captive screw locks, which will be adequate for hand tightening. The monitor connection may use small screws. 1. Product Specification (continued) ACER X223W 3 Go to cover page C o n n e c to r P in 1.3.2.1 Video Signal Amplitudes A s s ig n m e n t D SU B P in S ig n a l P in S ig n a l P in S ig n a l The three video inputs consist of Red ,Green , and Blue 1 R e d -V id e o 6 R e d -G N D 11 N C 2 G re e n -V id e o 7 G re e n -G N D 12 D D C -S D A signals, each with its own coaxial cable terminated at the 3 B lu e -V id e o 8 B lu e -G N D 13 H -S Y N C monitor. These video signals are analog levels, where 0 4 5 N C D D C -G N D 9 10 +5V S y n c -G N D 14 15 V -S Y N C D D C -S C L V corresponds to black , and 700 mV is the maximum signal amplitude for the respective color, when each C o n n e c to r P in D e s c rip tio n D -S U B P in D e s c riptio n P in N ame 1 R e d - V id e o 2 G re e n- V id e o 3 B lue - V id e o 4 GN D 5 DDC -GN D 6 Red-G N D 7 G re e n- G N D 8 B lue - G N D 9 +5V 10 S ync - G N D 11 GN D 12 DDC _SDA 13 H-SYN C 14 V-SYN C 15 DDC -SC L D e s c riptio n R e d vid e o signa l inp ut. G re e n vid e o signa l inp ut. B lue vid e o signa l inp ut. G ro und D D C gro und fo r the V E S A D D C 2 B i func tio n. A na lo g signa l gro und fo r the R e d vid e o . A na lo g signa l gro und fo r the G re e n vid e o . A na lo g signa l gro und fo r the B lue vid e o . + 5 V inp ut fro m ho st syste m fo r the V E S A D D C 2 B i func tio n. S igna l gro und G ro und S D A signa l inp ut fo r the V E S A D D C B 2 i func tio n. H o rizo nta l signa l inp ut fro m the ho st syste m . V e rtic a l signa l inp ut fro m the ho st syste m . S C L signa l inp ut fo r the V E S A D D C 2 B i func tio n. signal is terminated by a nominal 75.0 ohms .For a given monitor luminance levels are measured using this defined video amplitud driving a monitor meeting the termination requirements .The signal amplitude is not to be readjusted to compensate for variations in termination impendance. 1.3.2.2 Video Signal Termination Impedance This analog video signal termination shall be 75Ω+/-1% which shall be resistive with a negligible reactive component . DVI-I / DVI-D (If using DVI-D cable, C1, C2, C3, C4, C5 is NC) Pin 1 2 3 4 5 6 7 8 9 10 Signal Pin 11 12 13 14 15 16 17 18 19 20 RX2RX2+ GND NC NC SCL SCA Analog V-Sync (NC) RX1RX1+ Signal GND NC NC 5V GND HP RX0RX0+ GND NC Pin 21 22 23 24 C1 C2 C3 C4 C5 Signal NC GND RXC+ RXCAnalog Red (NC) Analog Green (NC) Analog Blue (NC) Analog H-Sync (NC) GND Name RX2RX2+ GND NC NC SCL SDA high or active low, depending upon the timing .The Vertical Sync (VS) TTL signal is used to initiate the display of a new frame .VS may be either active high or active low, depending on the timing The monitor must accept sync signals from both 3.3 and Description TMDS link #0 channel#2 differentialpair TMDS link #0 channel#2 differentialpair GNDfor no link share NC NC Clock line for DDC interface Data line for DDC interface Analog V-sync for analoginterface 8 V-Sync 9 RX1- TMDS link #0 channel#1 differentialpair 10 RX1+ TMDS link #0 channel#1 differentialpair 11 GND GNDfor no link share 12 NC NC 13 NC NC 14 5V +5Vinput fromhost systemfor DDC2Bfunction. 15 GND Ground(Usingas Detect Cable) Pin 16 17 18 19 20 21 22 Name HP RX0RX0+ GND NC NC GND Description Hot plugging TMDS link #0 channel#0 differentialpair TMDS link #0 channel#0 differentialpair GNDfor no link share NC NC Clock shield 5 volt TTL logic families.The inputs shall sense a logic 0 when the input is 0.8 volt or less and shall sense a logic 1 when the input is 2.0 volts or greater. In addition to these level requirements, there shall also be a minimum 23 RXC+ TMDS clock differentialpair of 0.3 volt hysteresis provided for noise immunity 24 RXCAnalog C1 Red Analog C2 Green Analog C3 Blue Analog C4 H-Sync Analog C5 GND TMDS clock differentialpair (typically by using a Schmitt Trigger input ).That is , the AnalogRed signal AnalogGreensignal AnalogBlue signal H-sync for analoginterface AnalogGND 1.3.1.3 Audio Jack (option) This jack shall connect the audio input from host computer. 1.3.2 Video Input Signals Video Input Signal No. 1 2 3 4 5 Note The Horizontal Sync (HS) TTL signal is used to initiate the display of a horizontal line. HS may be either active 1.3.2.4 Sync Signal Levels DVI-I / DVI-D ConnectorPinDescription Pin 1 2 3 4 5 6 7 1.3.2.3 Synchronization ( Sync ) Signals Symbol Item Min Normal Max Unit Remark Fh Scanning Horizontal Frequency 30 81 kHz Minimum range Fv Scanning Vertical Frequency 55 76 Hz Minimum range Vih Hi Level Input 2.0 5.0 V Note 1) Vil Low Level Input 0 0.8 V Note 1) Video RGB Analog Video Level 0.0 0.7 1.0 V 75Ω to Ground 1) Schmitt-Triggers Input , Supported 3.3V device H(&V) sync output from PC. input level at which the monitor actually detects a logic 0 shall be at least 0.3 volt lower than the level at which it actually detects a logic 1.If the monitor sync processing circuits are designed around the 3.3 volt logic family ,then the sync inputs must be 5 volt tolerant . 1.3.2.5 Sync Signal Loading TTL input loading shall be equivalent to one TTL input load. When logic 0 is asserted by a sync input , the maximum current source from any single monitor sync input to the driver is 1.6 mA .When logic 1 is asserted , the maximum current source from the driver to any single monitor sync input is 400 uA . ACER X223W 4 1. Product Specification (continued) Go to cover page 1.3.2.6 Abnormal Signal Immunity 1.3.3.4 OSD adjustment The monitor shall not be damaged by improper sync timing , pulse duration , or absence of sync , or ITEM abnormal input signal amplitude ( video and/ or sync too large or too small) , or any other anomalous behavior of a graphics card video generator when CONTENT AUDIO VOLUME To increase or decrease the sound level BRIGHTNESS Back light Luminance of the LCD panel is adjusted. CONTRAST A gain of R , G and B signal is adjusted. changing modes , or when any combination of input AUTO CONTRAST A gain of R , G and B signal auto adjust. signals is removed or replaced . Additionally , under CLOCK The ratio of dividing frequency of the dot clock is adjusted. these conditions , the monitor shall not cause PHASE The phase of the dot clock is adjusted. damage to the driving source H-POSITION The indication screen is horizontally moved right and left (1 Pixels pitch). V-POSITION The indication screen is vertically moved up and down (1 Pixels pitch). AUTO ADJUST Clock system auto adjustment, about under 8 sec. COLOR BALANCE Select three kinds of modes. ( USER /6500 / 9300 ). The monitor shall have a power control switch OSD POSITION The OSD indication position can be adjusted. visible and accessible on the front of the monitor . OSD LANGUAGE Select the language used for the OSD menu among English , French , Italian , Deutsch and Spanish. 1.3.3 User Controls and Indicatiors 1.3.3.1Power On / Off Switch The switch shall be marked with icons per IEC 417 , RECALL DEFAULTS All data copy from factory shipment data. # 5007 and # 5009.The switch shall interrupt the DC supply to the monitor 1.3.3.2 Power Indicator LED The monitor shall make use of an LED type indicator located on the front of the monitor . OSD DURATION Adjust OSD menu off time range from10~120 second. POWER-SAVE Back light of the LCD panel is cut when the signal is not input (AC line power consumption 2W or less). INFORMATION The frequency of the horizontal / vertical synchronizing signal under the input is indicated. ※ NOTE : OSD MENU SEE APPENDIX A The LED color shall indicate the power states as given in Table 1. 1.3.4 Monitor Modes and Timing Capability 1.3.4.1 Format and Timing Table 1 Function LED Color Full Power Blue color Sleep Orange color 1.3.3.3 On-Screen Display The monitor shall synchronize with any vertical frequency from 55 to 76 Hz , and with any horizontal frequency from 30 to 81KHz. If the input frequency is out of the above – specified range, the monitor shall display a warning screen indicating that the input frequency is out of range. The Lite-ON On Screen Display system shall be Under no circumstances shall any combination of used , controlled by a Menu button. If the buttons input signals cause any damage to the monitor . remain untouched for OSD turn off time while 1.3.4.2 Factory Assigned Display Modes displaying a menu , the firmware shall save the There are 19 factory pre-set frequency video current adjustments and exit. Also, if the video modes. These modes have a factory pre-set for all controller changes video mode while the OSD is characteristics affecting front-of-screen active, the current settings shall be saved performance. When the system is powered- immediately, the OSD turn off, and new video mode on,previously stored screen parameters for a pre- is displayed. defined mode will be recalled if the operating mode is one of those stored in memory. If the Description Key MENU When no OSD display OSD Displayed Menu Display 1. To display the OSD menu on the screen. 2. To select the OSD sub-Menu > Speaker Volume/Minus 1. Forward selection of the OSD menu. (with Audio) 2. Increase the value after sub-menu selected. < Speaker Volume/Plus (with Audio) 1. Back-forward selection of the OSD menu. 2. Decrease the value after sub-menu selected. Auto Auto Adjust Function Menu or sub.menu EXIT/Auto Adjust function. Empowering Menu or sub.menu EXIT/Scenario mode E operating mode is not one of those stored in memory, the monitor CPU will select the PRESET timing for a mode that is the next lowest in horizontal scanning frequency to the mode being currently used. The screen parameters may be adjusted by the use of the front bezel controls and then may be saved as a user defined mode. The monitor shall include all the preset video timings shown in the following page.(Please see Note.(3) ) ACER X223W 1. Product Specification (continued) 5 Go to cover page 1.3.4.3 Mode Recognition Pull-in 1.3.5.2 Video Stretching The monitor shall recognize preset modes within a The monitor shall contain provisions to “stretch” the range of +/-1KHz whichever is less for horizontal ; video signal, so that an input signal from the and within +/-1Hz for vertical. computer in any resolution smaller than 1680 x 1050 is automatically expanded to fill the entire 1.3.4.4 User Display Modes screen. In addition to the factory pre-set video modes, provisions shall be made to store up to 9 user modes. If the current mode is a user mode, the The controller supplied with the monitor shall monitor shall select its previously stored settings. control all panel timing. This controller shall If the user alters a setting, the new setting will be adequately insulate the monitor from the computer, stored in the same user mode. The user modes so that no possible combination of input signals are not affected by the pre-set command. If the from the computer shall cause damage to the flat input signal requires a new user mode, storage of panel or any other component of the monitor. The the new format is automatically performed during LCD panel interface shall support the TFT user adjustment of the display (if required, please standard. 1.3.6 DC - AC Inverter Requirements see Note.(4) ) The DC-AC inverter is on the power board. The Preset T im ing C hart Polarity H V + - 720 x 400 (70H z) 640 x 480 (59.94H z) 640 x 480 (66.66H z) H -Sync (K H z) 31.469 31.469 35 B and W idth (M H z) 28.322 25.175 30.24 640 x 480 (72H z) 640 x 480 (75H z) 37.861 37.5 31.5 31.5 - - 648 x 500 (57.7H z) 31.234 25.175 + + Item No R esolution 1 2 3 102 103 182 4 5 173 109 6 1.3.5.3 Panel Timing and Interface 7 104 800 x 600 (56.25H z) 35.156 36 + + 8 116 800 x 600 (60H z) 37.879 40 + + 9 117 800 x 600 (72H z) 48.077 50 + + 10 110 800 x 600 (75H z) 46.875 49.5 + + 11 108 832 x 624 (74.55H z) 49.722 57.28 12 118 1024 x 768 (60H z) 48.363 65 13 157 1024 x 768 (70H z) 56.476 75 14 141 1024 x 768 (75H z) 60.023 78.75 + + 15 126 1152 x 864 (75H z) 67.5 108 + + 16 161 1280 x 960 (60H z) 60 108 + + 17 179 1280 x 1024 (60H z) 63.981 108 + + 18 131 1280 x 1024 (75H z) 79.976 135 + + 19 1680 x1050(60H z) 65.3 146.25 + N O TE : (1) 76 ≦ FV ≦ 86 : m onitor can display but doesn't guarantee. (2) fV < 55, or fV > 86 : w arning invalid m ode. (3) Factory m odel : A fter w e first burn the code into the flash, every preset-m odel w e run first m ust do auto-adjusting. Then it'll not do auto-adjust again w hen w e changed preset-m ode back including A C on/off D C on/off. The only w ay that preset-m ode do auto-adjust again is press '' Internal Factory R eset''. (4) U ser m ode : The code should m em orize 9 tim ing m ode exclusive of preset-m odes as use m ode and do auto-adjusting. W hen user set a new m ode that is not am ong previously. It'll do auto-adjusting then be solved to user m odes. The new m ode w ill overw rite the first m em orized user m odes. The user m odes be cleared is sam e as Factory m ode. Just do '' Internal Factory R eset''. (5) Internal Factory R eset and O SD Factory R eset behavior. frequencies used by the DC-AC inverter used to power the backlight shall be chosen so as to prevent any noticeable effects on the flat panel (such as a rolling effect). 1.3.7 Power Supply Requirements The AC to DC converter power supply for the monitor shall be an external AC to DC converter ”brick” This brick shall have an IEC receptacle for main power input and a pin - in -socket for DC power out. The brick shall provide sufficient power for both the monitor and the backlight assembly, and shall meet requirements specified in Table 2. Table 2 AC to DC Converter Requirements Input Voltage Range The operating range shall be from 90 to 132 and 195 to 265 AVC sinusoidal for all models specified. Input Frequency Range Input power frequency range sha;; be from 47.5 to 63 Hz over the specified input voltage range. Power Consumption Power consumption for the monitor shall be less than 46W over the specified voltage and frequency ranges. In suspend or sleep mode the power consumption will be less than 2W. Line Fuse The AC input shall be fused and become electrically open as a result on an unsafe current level. The fuse many not be user replaceable. Initial Cold Start The power supply shall start and function properly when under full load, with worst case conditions of input voltage, input frequenct, operating temperature, and cold backlight lamps. Inrush Current The inrush current must be limited to 30A when operated at 120VAC, and 50A when operated at 220VAC. Inrush current is measured at an ambient temperature of 25oC, with the unit temperature stabilized in the power-off. Hot Start Cycle The power supply shall be damaged when switched ON for one second and OFF for one second for seven consecutive after operating for one hour at full load, 25 oC, and nominal input line voltage. Under Voltage The power supply shall contain protection circuitry such that the application of an input voltage below the minimum specified in this table shall not cause damage to the power supply unit nor cause failure of the input. Line Transient The power supply shall operate within IEC 801-4 (± 1KV) and IEC 801-5 (± 2KV) for the domestic U.S. version. The UPS power supply shall operate and comply with CE mark. 1.3.5 Controller Requirements 1.3.5.1 General Requirements The monitor shall include a controller capable of converting the analog RGB signal from a standard SXGA resolution video controller in the CPU to a signal which can be displayed on the panel. The controller will include a PLL, A/D converters, LVDS transmitter and other circuitry necessary to perform its function. The PLL shall be stable enough to ensure that a static image from the CPU is placed in the same physical location on the flat panel in each frame. 6 ACER X223W 1. Product Specification (continued) Go to cover page 1.3.8 Display Communications Channel 1.4.4.2 Lamps Startup Time The monitor assembly shall provide a display The backlight lamps shall start about 2 sec of the communications channel that conforms to VESA time the monitor power switch is pressed or the DDC2Bi hardware requirements. This configuration monitor is restarted from a power - down mode .The shall contain the 128-byte EDID file as specified by starting time shall stay about 2 sec. for the VESA EDID standard.The monitor should not write to minimum expected life of the lamps. the EDID file for the first two minutes of operation Test conditions are as follows : following power-up UNLESS some action taken by the Ambient Light ---------------------- < 1.0 lux user or the host CPU forces the write (for instance, Temperature-------------------------- 10℃ Inactive Time ----------------------- > 24 hours requesting the serial number via the OSD). Furthermore, it is recommended that CMOS switches be incorporated to isolate the DDC IC from outside 1.4.5 Defects 1.4.5.1 Visual Inspection connections while the EDID Fault Management is The LCD panel shall be inspected with all pixels set being updated. This is to prevent corruption of the data to white,black , red , green , and blue. The color by attempts to read the data while it is being changed. variation, brightness variation , and overall 1.3.9 Firmware Update Function (same ISP function) appearance must not be perceived as poor quality The update firmware need through from the D-Sub by Lite-On . Areas and / or parameters considered connector, use DDC I2C bus to do update firmware. questionable shall be subjected to detailed 1.4 PANEL ELECTRICAL 1.4.1 General Requirements measurements . 1.4.5.2 Display Degradation The panel used as the display device shall be an Over the life of the product , variation of the WSXGA resolution,20/22W, TFT-LCD.This panel shall parameters specified in Panel specification shall be be approved for use in this monitor. maintained within reasonable limits.The panel must 1.4.2 Panel Timings not exhibit any significant defects while in operation The controller included with the monitor shall translate ( excluding the CCFL operation ).This does not in all video timings from the CPU that meet the timing any way change the warranty given by the panel requirements listed in Panel specification into timings manufacturer . appropriate for the panel. Under no circumstances may 1.4.5.3 Light Leakage the controller supply the panel with timings that may Except for the active display area , there shall be no result in damage. The controller shall insulate the light emission visible from any angle from any other panel from the CPU , so that the panel shall always be part of the display . For this test , the ambient driven per it's own specification regardless of the illumination must follow panel's specification. timings being sent from the CPU. 1.4.3 Polarizer Hardness 1.4.5.4 Allowable Defects No cosmetic defects are allowed except those The outer face of the front polarizer panel shall be specified below.The conditions of visual inspections covered with a coating with a # 3 hardness value . are as follows : 1.4.4 Backlight Requirements For P20/22 W Series. 1.4.4.1 General Requirements ■Viewing distance is to be approximately 35-50cm The backlight assembly shall be designed to support field replacement at the customer site or authorized ■Ambient illumination is to be 300 to 700 lux. service center. The lamps shall have a continuous ■Viewing angle shall be at 90 degree. operating life of at least 40,000 hours at 25. The ■Defects not apparent within one minute shall be operating life is defined as having ended when the illumination of light has reached 50% of the initial value. The lamps shall extend a sufficient amount from the edge of the light guide that sputtering over the life of the lamps shall not cause degradation of the luminance uniformity (such as non-illuminated bands along the edges of the display). ignored. 1. Product Specification (continued) ACER X223W 7 Go to cover page 1.4.5.5 Defect Terminology 1.5 Optical Characteristics Table 3 gives the descriptive terms used in classifying Depends on the LCD supplier's spec. Details refer to QA defects. Inspection Spec. D ark / Spots / Lines Spots or lines that appear dark in the display patterns and are usually the result of contam ination. D efects do not vary in size or intensity (contrast) w hen contrast voltage is varied. C ontrast variation can be achieved through the use of varying gray shade patterns. Bright Spots / Lines Spots or lines that appear light in the display patterns. D efects do not vary in size or intensity (contrast) w hen contrast voltage is varied. C ontrast variation can be achieved through the use of varying gray shade patterns. Polarizer Scratch W hen the unit lights, lines appear light (w hite) w ith display patterns dark and do not vary in size. Physical dam age to the polarizer that does not dam age the glass Polarizer D ent W hen the unit lights, spots appear light (w hite) w ith display patterns dark and do not vary in size. Physical dam age to the polarizer that does not dam age the glass. R ubbing Line N ew ton R ing H orizontal or diagonal lines that appear gray w ith the display patterns dark and m ay have resulted from an “out of control” rubbing process on the polyim ide or “w aves” on the B EFs or prism sheets. The “rainbow ” effect caused by non-uniform cell thickness. W hen the unit lights, variation / non – uniform ity (splotchiness) appears light (w hite) w ith the display and m ight vary in size. W hen the unit lights, line(s) in the m onitor (vertical) or m ajor (horizontal) axis appear dim , but not com pletely on or off. M ottling D im Line C ross Lines O ff W hen the unit lights, lines in both the m inor and m ajor axis do not appear. Bright / D ark D ot A sub – pixel (R ,G ,B dot) stuck off / on (electrical). 1.4.5.6 Smudges, Streaks and Smears When viewing the panel oriented so as to maximize reflected light , there shall be no visible smudging , streaking, smearing or other nonuniformity from contaminants ,fingerprints,or defects in any of the visible surfaces. This is independent of whether the unit is operating or off . 1.4.5.7 Other Defects Undefined defects that are considered to be rejectable by Lite–On will be reviewed by Lite-On as they become apparent. These panels will be referred to the Lite - On Corporate / Manufacturer Purchasing Agreement for disposition. 1.4.5.8 LCD Inspection Put LCD panel on inspection table and illuminate the panel with a daylight fluorescent lamp located above the panel surface such that the illuminance at the LCD panel is between 1000 lux and 1500 lux .Defect limits are given in Table 4 . Average Diameter smaller of (L+W)/2 or L/20+2W Acceptable Number Minimum Separation < 0.1mm Non countable N/A 0.1 mm ~ 0.3 mm 10 15 mm 0.31 mm ~ 0.5 mm 10 15 mm 0.51 mm ~ 1.25 mm 5 15 mm 1.26 mm ~ 2.5 mm 3 25.4 mm 2.51 mm ~ 3.75 mm 3 25.4 mm Greater than 3.75 mm NONE Not applicable Note : Allowable distance between spots of two sizes is the minimum separation number for the smaller spot. Therefore, if there are two spots, 1.30mm and 0.4mm in diameter, they must be at least 15mm apart. ACER X223W 8 2 OSD Menu Go to cover page 2.1 MAIN OSD MENU Outline: The description for control function: M a in M enu Ic o n Sub Menu Ic o n Sub Menu Ite m N /A W a rm N /A Cool D e s c r ip t io n S e t t h e c o lo r t e m p e r a t u r e t o w a r m w h it e . S e t t h e c o lo r t e m p e r a t u r e t o c o o l w h ite . U s e r /R e d U s e r /G r e e n A d ju s t s R e d /U s e r /G r e e n G r e e n /B lu e in t e n s it y . U s e r /B lu e N N N N N N N N /A /A /A /A /A /A /A /A E n g lis h D e u ts c h F r a n c a is E spanol Ita lia n o H . P o s it io n V. P o s it io n OSD T im e o u t N /A A u t o C o n f ig N /A A n a lo g N /A D ig it a l N /A D D C /C I s w itc h N /A In f o r m a tio n N /A R eset N /A E x it M u lti- la n g u a g e s e le c tio n . A d ju s t t h e h o r iz o n t a l p o s it io n o f th e O S D . A d ju s t t h e v e r t ic a l p o s it io n o f th e O S D . A d ju s t t h e O S D t im e o u t. A u t o A d ju s t th e H /V P o s itio n , F o c u s a n d C lo c k o f p ic tu r e . ( O n ly A n a lo g In p u t M o d e l) S e le c t in p u t s ig n a l fr o m a n a lo g (D -S u b ) ( O n ly D u a l In p u t M o d e l) S e le c t in p u t s ig n a l fr o m d ig it a l ( D V I) ( O n ly D u a l In p u t M o d e l) S e le c t th e D D C /C I O N o r OFF S h o w t h e r e s o lu t io n , H /V f r e q u e n c y ,S N a n d in p u t p o r t o f c u r r e n t in p u t t im in g . C le a r e a c h o ld s ta tu s o f A u t o - c o n f ig u r a tio n a n d s e t th e c o lo r te m p e r a tu r e to W a r m . S a v e u s e r a d ju s tm e n t a n d O S D d is a p p e a r . A d ju s tm e n t R ange N /A N /A R e s e t V a lu e T h e c o lo r t e m p e r a t u r e w ill b e s e t to c o o l. 0 -1 0 0 100 0 -1 0 0 100 0 -1 0 0 100 N /A T h e la n g u a g e w ill b e s e t t o E n g lis h 0 -1 0 0 50 0 -1 0 0 50 1 0 -1 2 0 10 N /A N /A N /A N /A N /A N /A N /A T h e D D C /C I s w itc h , d e f a u lt is “ O N ” in m o n ito r . N /A N /A N /A N /A N /A N /A 2. OSD Manu (continued) ACER X223W Go to cover page 9 10 ACER X223W Go to cover page 3.1 Packing Exploded Diagram 3. Exploded Diagram 3. Exploded Diagram (continued) ACER X223W Go to cover page 3.2 Product Exploded Diagram 11 ACER X223W 12 4. Assembly and Disassembly Procedures Go to cover page 4.1 Assembly procedures: Connect the cable between power board(P802) S1 and interface board (P301) S5 Connect the function key cable into interface Take the key function cable out from the hole shown as photo Fix the function key cable with a PVC tape board(P306) Connect the FFC cable into interface board P301 P802 FFC P306 Take a bracket chassis base on a protective S2 cushion and stick an insulator on the specific position, take a power board and turn it over. Then, put it on the specific positions of bracket chassis Turn the monitor faced down and put it on the S6 base. Bracket Chassis module till both parts firmly Take lamp cables out from the holes shown as the photo. Use a Phillips-head screwdriver screwed the S3 No.1~4 screws till that power board and bracket chassis base firmly attached.(No1 screw size=M4x8; No2~4 screw size=M3x6; Torque=9~10KGFxCM). 3 2 S7 1 4 Use a Phillips-head screwdriver screwed the S4 No.1~4 screws till that interface board and bracket chassis base firmly attached. 3 4 2 1 Connect the FFC cable to the connector of the LCD panel. 4. Assembly and Disassembly Procedures (continued) 13 ACER X223W Go to cover page Use a Phillips-head screwdriver screwed the No.1~4 S8 Connect FFC cable to LCD panel. There are two locks over here when plugging in should be S10 screws on both side and assemble the LCD panel and bracket chassis module. noticed (No1~4 screw size=M3x6; Torque=3~4KGFxCM). 2 1 4 3 S7 S11 Use a Phillips-head screwdriver screwed the No.1~2 screws. (No1~2 screw size=M3x10; Torque=3~5KGFxCM). 1 2 Plug in parallel direction Use a Hex-head screwdriver screwed the S12 DVI and D-SUB connectors (No.1~4Hex Nut screws Size=M3x8;Torque=3~5KGFxCM). S8 1 2 Angel < 5 degrees S9 Plug 8 lamp cables to the connectors of power board.(Both of right and left sides) S13 Take a key function board to hook with front bezel (No.1~2) and connect to key function cable. 1 2 ACER X223W 14 4. Assembly and Disassembly Procedures (continued) Go to cover page S14 Put a rear cover on the assembled unit and press on force mechanisms locked and firmly S18 Stick Vista and TC003 label on the correct position the same as below photo attached. S19 Assemble the stand upper side to the rear cover S15 Take a LDPE+EPE bag to cover the LCD monitor. Take a PE bag to cover the stand base. through the way of screwing 4 screws till both units firmly attached. (No1~4 Screw Size=M4x10; Torque=11~13KGFxCM). 3 4 S16 1 2 Assemble the hinge cover into both two sides S20 Take two cushion foams; one is held the front side of LCD monitor, and another is held the back side. Stick a screen card on the front bezel with two S17 tapes. 4. Assembly and Disassembly Procedures (continued) ACER X223W Go to cover page S21 Put accessories of stand, DVI cable, and user’s manual ,power cable on specific USER’S MANUAL STAND S22 DVI CABLE POWER CABLE positions as photo below. D-SUB CABLE Move previous assembled parts into the carton then stick Vista and feature label on the carton then packing the carton FEATURE LABEL VISTA LABEL 15 ACER X223W 16 4. Assembly and Disassembly Procedures (continued) Go to cover page 4.2 Disassembly procedures S1 S4 Open the carton with a proper tool. Put returned unit on a protective cushion,then remove LDPE+EPE bag. Tear off tapes to remove the screen protector card then turn over the LCD monitor (screen faced down), FEATURE LABEL VISTA LABEL S2 Take out all accessories including D-SUB cable power cable, DVI cables, user’s manual, and stand base and packing material from the carton. (Note: It depends on whether users returning USER’S MANUAL STAND S3 DVI CABLE POWER CABLE the accessories.) S5 Disassemble the stand cover. D-SUB CABLE Take off two cushion foams S6 Use a Phillips-head screwdriver unscrew 4 screws to release the stand base. (No1~4 Screw Size=M4x10; Torque=11~13KGFxCM). 3 4 S7 1 2 Turn over the LCD monitor (screen faced up). 4. Assembly and Disassembly Procedures (continued) ACER X223W 17 Go to cover page Unhook the key function board from rear bezel, S8 Place cloth on the panel where you are working S9 disconnect the key function cable on to protect the panel. Continuously, wedge your finger between the front bezel and the panel, then pry up on the front bezel to disengage the locking mechanism. S10 Use a Hex-head screwdriver unscrewed 4 screws to release the DVI and D-SUB connectors (No1~4Hex Nut screws Size=M3x8;Torque=3~5KGFxCM). Work your way along the front bezel to disengage all the locking mechanism. 1 2 S11 Use a Phillips-head screwdriver unscrewed the No.1~2 screws to lease power plug (No1~2 screw size=M3x10; Torque=3~5KGFxCM). 1 2 ACER X223W 18 4. Assembly and Disassembly Procedures (continued) Go to cover page S12 Use a Phillips-head screwdriver unscrewed the No.1~4 screws to disassemble the LCD panel S15 and bracket chassis module. Disconnect the FFC cable to the connector of panel. Use finger to push the lock according to arrow direction then take out the FFC cable (No1~4 screw size=M3x6; Torque=3~4KGFxCM). 1 2 4 3 Unplug 4 lamp cables (No. 1~4). S13 S16 S14 Take out lamp cables right through the No.1 and 2 square holes and separate the bracket chassis module and LCD panel apart. S17 Examine the panel surface accoring to inspection criteria. Put it aside. Use a Phillips-head screwdriver unscrewed the No.1~4 screws to release the interface board. (No1~4 screw size=M3x6; Torque=9~10KGFxCM). 1 2 3 4 2 1 4. Assembly and Disassembly Procedures (continued) ACER X223W Go to cover page Use a Phillips-head screwdriver unscrewed the S18 No.1~4 screws to disassemble the power board. (No1 screw size=M4x8; No2~4 screw size=M3x6; Torque=9~10KGFxCM). 3 2 1 4 Disconnect the FFC, P301, and function key S19 cables to connectors of interface board. P802 P301 FFC P306 19 ACER X223W 20 5. Troubleshooting Go to cover page 5.1 No.display of screen (Screen is black, color of LED is amber) Does OSM display when you push PROCEED buttom. No When a signal isn't being inputted, it is indicated with "No Signal Input". it is indicated with "Out Of Range" at the time of the frequency that it can't be distinguished. Proceed "No OSM display" section. Yes Check if the sync signal from computer is output and if the video cable is connected normally. NG OK Proceed "checking the resolution change IC movement" section. Input the sync signal of computer, or change the cable. ACER X223W 5. Troubleshooting (continued) Go to cover page 5.2 Nothing display on screen (screen is black, color of LED is blue) Is backlight lit? NG Refer "Checking the backlight unit" section" OK Check the video cable for failure. Check the host for output signal is all black or not. Is backlight lit? NG OK Check OSM menu is display on screen when you push the "PROCEED" key. 1) Change pattern of video signal output on the host. 2) Reconnect the video cable. 3) Change the video cable. NG Check if the LCD video signal cable is connected between the Interface Board and LCD module. Failure Point NG OK OK Proceed "Abnormal sreen" dection" Next Page The LCD video signal cable is disconnected. 21 22 ACER X223W 5. Troubleshooting (continued) Go to cover page 5.2 Nothing display on screen (screen is black, color of LED is blue) continued Continue Check the 5V power supply for P304 pin 1, 2, 3 NG Check the I302 pin2 if voltage is 3.3V Proceed "Checking the DC/DC converter circuit" section. NG OK Check the D326 pin1 if voltage is 1.8V Proceed "Checking the DC/DC converter circuit" section. NG OK OK Check the I301 pin2 if voltage is 5V NG Failure Point 1) FB301 is open. 2) C309, C310 is short. OK Check if the voltage between I301 pin2 and pin3 is above 0.7V Check if the Q301 pin2 of PANELVCC_EN signal that outputted by I305 pin85 is High level. NG OK Check the input voltage level whether was changed when pressed function keys on the P306 pin 4 (normal is high level, when push buttom, generated 1.6V) NG Failure Point 1) Printer wire between R307 and I305 pin85 is failure 2) I305 is failure. Failure Point I301 is failure. OK Failure Point NG 1) Printed wire between Q301 pin3, R305, R306, I301 pin1 is failure.. 2) Q301 is failure. Check if the voltage on I305 pin 90 that is from 3.3V to 1.6V. Failure Point NG OK OK Failure Point Check the P304 all LVDS signals. I305 is failure Failure Point NG OK Failure Point 1) The LVDS cable broke between P304 and LCD module. 2) LCD module is failure. 1) Printed wire broke between P304 and I305 LVDS signals. 2) I305 is failure. Printed wire broke between P306 pin 4 and I305 pin 90. 5. Troubleshooting (continued) ACER X223W Go to cover page 5.3 Checking the back light unit Is +22V supplied to inverter PWB ? (by the power board) Failure Point NG Power board of Inverter part failure. OK Check the BKLT_EN signal of the DC input P301 pin2 at TTL high level. Failure Point NG OK 1) printed wire broke between P301 pin2, R303 and I305 pin 88. 2) I305 is failure. Check the BKLT_ADJ signal of the input P301 pin3 from I305 pin86 is a PWM signal. Failure Point NG OK Failure Point 1) Back light unit of LCD module is failure. 2) Inverter Cable is disconnected 1) printed wire broke between P301 pin3, R301 and I305 pin86. 2) I305 is failure. 23 24 ACER X223W 5. Troubleshooting (continued) Go to cover page 5.4 Abnormal screen for VGA Check the R, G, B video signal from computer input on P302 of video connector. NG Failure Point OK 1) No R, G, B video signals output from host computer, check computer. 2) Video signal cable disconnection. Check the R, G, B input video signals on I305 pin18, 20, 23 respectively that their level is 0.0 to 0.7Vp-p. NG OK Check all LVDS signals being output to P304 from I305? NG OK Process "Checking the resolution change IC movement" section. Failure Point In the case of the Red signal. (A Green and Blue signal is the same path, too.) 1) Printed wire broke between P302 pin1 and I306 pin23. 2) Video cable is failure. 3) FB303,FB304, R309 is open. 4) R311 is short or open. 5) C315 is short or open. Failure Point Printed wire broke between I305 and P304. ACER X223W 5. Troubleshooting (continued) Go to cover page 5.5 Abnormal OSM display adjust problem Check the input TTL level whether was changed when pressed function keys on the P306 pin 4, 5 (normal is high level, when push buttom, generated low level plus) NG Failure Point 1) Function key wire disconnection. 2) Function key wire is failure. 3) Function key board is failure. OK Check the input TTL level of I305 pin89, 90 whether was changed when pressed function keys. (Refer to Table 1) NG OK Failure Point I305 is failure. Failure Point 1) Printed wire broke among P306 pin4, pin5; R369 and I305 pin90. 2) Printed wire broke among P306 pin5,R372, and I305 pin89. 3)C386,C388 ,C389,C390 are short. 25 26 ACER X223W 5. Troubleshooting (continued) Go to cover page 5.6 Abnormal plug and play operation for VGA Confirm the host computer supplies DDC2B mode. NG OK Failure Point The host machine is not communicatiog in DDC2B mode. Check the voltage on P302 pin9 that is power DC 5 V. NG OK Failure Point The Video cable is failure. Check the voltage on I303 pin8 that is power DC 5 V. NG Failure Point 1) Printed wire broke between I303 pin8, D308 and P302 pin9. 2) D309, C329 is short. 3) D308 is failure. OK Check the signal on P302 pin12, 15 that is serial data / clock signal. NG Failure Point OK The Video cable is failure. Check the output signal of serial data/clock on I303 pin5, 6. NG Failure Point OK I303 is failure. Failure Point 1) Printed wire broke among I305 pin30, pin31, R328,R330 and P302 pin12, 15 . 2) I303 maybe failure. 3) R326, R327 are open. 4) R328 or R330 or C330 or C331 is open or short. 5. Troubleshooting (continued) ACER X223W Go to cover page 5.7 Checking the interface circuit of sync signal 5.7.1 Checking the control circuit of horizontal sync pulse Check the horizontal sync signal on P302 pin13 TTL level. NG Failure Point OK Video cable is failure. Check the horizontal sync signal on I305 pin27 TTL level. NG Failure Point OK Failure Point Process "Checking the resolution change IC movement" section. 1) Printed wire broke between P302 pin13 and I305 pin27. 2) FB309, R321 are short. 3) D307 or R324 or C327 is short. 27 28 ACER X223W 5. Troubleshooting (continued) Go to cover page 5.8 Checking the resolution change IC movement Check +3.3V supply on I305 pin8, pin14, pin16, pin24 , pin32, pin49, pin56, pin75, pin98 NG Proceed " Checking the DC/DC converter circuit" section. NG Proceed " Checking the DC/DC converter circuit" section. OK Check +1.8V supply on I305 pin 51, 66, 82, 34. OK Check X301 14.318MHz clock input to I305 pin96 and pin97 at TTL level. Failure Point NG OK 1) Printed wire broke between X301 and I305 pin96, pin97. 2) C379, C380 is short or open. 3) X301 failure. Check I305 pin 84 HWRESET signal is low level at normal operation. Failure Point NG Check if D328 pin1 is low. NG 1) Printer wire broke between I305 pin84 and C378 2) C78 is short. OK Failure Point OK Check I305 pin37, pin38, pin39, pin40 SPI signal (Same as the IIC signal). 1) Printer wire broke between I305 pin84 and C378. 2) C381 is short. 3) R358, D328 is failure 4) I305 is failure Failure Point NG OK Failure Point I306 failure. 1) Printed wire broke between I305 pin37, pin38, pin39, pin40 and I306 pin1, pin2, pin5, pin6. 2) I306 failure. 5. Troubleshooting (continued) ACER X223W Go to cover page 5.9 Checking the DC/DC converter circuit Check the 5V is output from P301 pin5, pin6. OK NG Failure Point 1) Power wire disconnection. 2) Power board is failure. Check the 5V is input to I302 pin3. NG Failure Point OK 1) Printed wire broke between P301 pin5, pin6, and I302 pin3. Check the 3.3V is output from I302 pin2, 4. NG OK Failure Point I302 is failure. Check the 3.3V is input to Q305 pin1. OK NG Failure Point Printed wire broke between I302 pin2, pin4 and Q305 pin1. Check the 1.8V is output from D326 pin 1. NG OK Failure Point 1) Printed wire broke between I302 pin 2. 4, Q306 pin1 and I305 VCTRL pin. 2) FB311, FB312, FB313, FB314, FB315, are open. Failure Point D326 is failure. 29 6. Schematics and Layouts: AC 110/220V Input Power & Invertor Board 1 2 2 6.1 ACER_LCD_X223W_SCHEMATICS_BLOCK DIAGRAM A B C D E F G 1 3 4 4 5 5 P301 Power Con. 6 VCTRL 1.8v 6 Flash EPROM SST 25VF010A PMC 25LV010A I306 Q305 I302 DC-DC 5v-3.3v Audio DC 5.3V Out (Option) +5V Brightness,Inv_On/Off Backlight 3 7 8 LVDS 9 Panel Con. P304 LCD Module AUO M220EW01-V2/V0 M201EW02-V8/V9 CPT CLAA201WA04A SEC LTM220M1-V0/L01 VLCD I305 Scaler 10 R,G,B,Hs,Vs RC Reset X301 XTAL 14.318MHZ 11 I303 DDC 24LC02B 12 P306 Key Con. 12 VGA_DDC_CLK, VGA_DDC_DAT 11 Analog Video Input P302 Digital Video Input P303 10 D-SUB 9 DVI-D TMDS TSUMU58BWHL-LF I304 DDC 24LC02B 8 DVI OPTION DVI_DDC_SCL, DVI_DDC_DAT 7 PCB No. 13 Function Key Board 13 6832190100P01 A B C D E F G ACER X223W Go to cover page 30 L G 1 3 1 F801 2.5AL250V R802 SCK103 2 T802 LINE FILTER R801 C801 0.33U/275V I801 3 C820 1000P/250V 7 2 6 8 C807 10UF/50V BEAD L809 C819 0.22U/275V 6.2 ACER_LCD_X223W_SCHEMATICS_POWER BOARD A 2 1M 1/4W MGF C808 1 SG5841J 3 1000P/250V 5 4 + 7 6 5 4 3 2 1 BRI C812 1000P GND-1 ON_OFF 10K R113 R102 30.1K 1% 8 GND ZD801 22D 4 D807 RL206 1 D805 RL206 4 2 GND C106 0.047uF + 5 D808 RL206 6 R824 33K 1% GND 6 C108 220P R818 0.51/1W R829 NA 7 R812 100K/2W 1 7 3 4 1 D801 X 2 5 GND-1 T801 ER28 Q105 C945 22 MOF R131 Q106 A733 GND D804 1N4937 L803 BEAD/6mm C810 100P 1KV X7R R811 0.39/2W R134 1K R132 1K GND-1 GND Q104 2N7000 R830 243K D803 1N4007 C806 0.01U/1KV R133 22 MOF Q803 7N65C R807 3.3 R804 + C805 2M 100U/450V 1/4W MGF GND-1 D806 1N4148 1 2 C830 4700P/1KVX7R D812 RL206 R814 C104 330P R107 6.8K R118 31.6K 1% 33.2K 1% R827 C827 0.01UF/PEM R823 270 R813 100/MOF 1K R825 150K 1% R106 GND I803 AP431 1% 22/MOF R826 1K + R104 510K 1% GND GND GND C828 4.7U/50V 3 9 10 11 12 13 14 15 16 I802 LTV817 R815 200/MOF C809 4700P/1KVX7R C825 1000P/250V + GND-1 C811 220P DRV2 PGND I101 DRV1 CT GNDA VDDA TIMER DIM SSTCMP LCT ISEN VSEN ENA NC OVPT NC C103 2.2uF/50V GND 2 3 N P801 GND R808 30.1K 1% +5V R105 20 C101 0.1uF R103 30.1K 1% OZ9938 GND 1 4 2 3 1 R833 30.1K 1% C110 1 + GND C132 1000P 5 10 9 8 7 6 GND 8 R831 X C816 1000P 4 3 2 1 4 3 2 1 GND 2 9 D2 D2 D2 + C134 + 10 C851 0.1UF +5V T101 D105 D104 1N4148 1 2 T102 7 2 7 D107 1N4148 1 2 1N4148 1 D811 24C GND GND GND 5V 5V 5V 5V BRI ON_OFF GND R817 1K BRI GND R126 3.65K 1% R125 3M 1/4W C123 10P/6KV C109 0.022UF X7R GND R115 3.65K 1% R116 3M 1/4W C117 10PF/6KV GND ON_OFF 11 4 5 6 10 EEL19-B 1 2 3 + C823 1000UF/16V GND R137 100K 2 1 2 3 11 4 5 6 10 EEL19-B D109 2 D110 1N4148 1 2 1N4148 1 1N4148 D108 1 R138 100K R140 100K R139 100K R120 13K GND GND 10 C817 330U/35V GND L802 10U + C824 1000UF/16V C127 + 7 330UF/35V + C128 330UF/35V 6 + 330UF/35V GND C135 330UF/35V 5 7 8 5 6 8 GND + C818 330U/35V GND + C822 1000UF/16V Q107 S2 D2 S2 D1 D1 D1 AOP609 G2 G1 G2 D1 GND R130 402 1% S1 9 C131 0.022UF X7R G1 AOP609 Q108 S1 GND 100V X7R C821 1000P 500V X7R D809 ER1002FCT + C129 220UF/35V + D810 SB1060F R832 X +22V GND GND D113 1N4148 1 D112 1N4148 1 GND C130 220UF/35V R128 13K 2 8 1 2 1 2 C133 1000P GND 4 3 1 2 R136 10K 2 C102 22uF/50V 2.2uF/50V GND C111 1000P GND R135 1M GND 3 1 B R101 10K C105 1000P GND 2 2 C D E F G 1 12 R828 51K GND P802 1 2 3 4 5 6 7 8 9 10 R117 100K 1% R119 13K 1% R122 13K 1% R121 100K 1% GND R111 402 1% 1 F101 3A C116 5PF/3KV C115 470P X7R GND 2 2 1 2 1 2 1 2 1 1 2 1 2 1 2 1 GND C113 0.1UF 13 +22V GND D103 1N4148 2 GND C114 0.1UF D115 1N4148 GND 13 P101 2P P102 2P P103 2P P104 2P 6832192600P01 D102 1N4148 1 C125 5P/3KV C120 470P X7R GND 2 D114 1N4148 12 PCB No. 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 A B C D E F G ACER X223W Go to cover page 31 VDD VLCD 1 VCC5V VCC5V VCC5V VCC3V3 VLCD VCC5V POWER VCC5V VDD 3 DDC_WPn RX2+ RX2RX1+ RX1RX0+ RX0RXC+ RXC- HDCP_CTRLn DVI_DETn DVI_DDC_DAT DVI_DDC_CLK 3 PANELVCC_EN VCC3V3 VLCD 2.POWER 2 BKLT_EN BKLT_ADJ 4.DVI & DDC INTERFACE VCC5V DVI & DDC INTERFACE 3.VGA & DDC INTERFACE DDC_WPn VGA_DDC_DAT VGA_DDC_CLK VGA_DETn RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC VGA & DDC INTERFACE 2 6.3 ACER_LCD_X223W_SCHEMATICS_INTERFACE_TOP A B C D E F G 1 RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC VGA_DETn 4 VGA_DDC_DAT VGA_DDC_CLK DDC_WPn DDC_WPn RX2+ RX2RX1+ RX1RX0+ RX0RXC+ RXC- HDCP_CTRLn DVI_DETn VCC5V DVI_DDC_DAT DVI_DDC_CLK VCC3V3 BKLT_EN BKLT_ADJ PANELVCC_EN 4 5 6 SCALER TSUMU58BWHL-LF RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC VGA_DETn VGA_DDC_DAT VGA_DDC_CLK DDC_WPn RX2+ RX2RX1+ RX1RX0+ RX0RXC+ RXC- HDCP_CTRLn DVI_DETn DVI_DDC_DAT DVI_DDC_CLK VCC5V VCC3V3 BKLT_EN BKLT_ADJ PANELVCC_EN 6 5.SCALER TSUMU58BWHL-LF 5 7 7 8 8 9 LVACKP LVACKM LVA0P LVA0M LVA1P LVA1M LVA2P LVA2M LVA3P LVA3M LVBCKP LVBCKM LVB0P LVB0M LVB1P LVB1M LVB2P LVB2M LVB3P LVB3M LED_G LED_A ADC1_IN ADC2_IN VOLUME AUDIO_EN 9 LVACKP LVACKM LVA0P LVA0M LVA1P LVA1M LVA2P LVA2M LVA3P LVA3M LVBCKP LVBCKM LVB0P LVB0M LVB1P LVB1M LVB2P LVB2M LVB3P LVB3M LED_G LED_A ADC1_IN ADC2_IN 10 AUDIO_EN VOLUME 10 11 12 VCC3V3 VLCD PANEL & KEY INTERFACE LVACKP LVACKM LVA0P LVA0M LVA1P LVA1M LVA2P LVA2M LVA3P LVA3M LVBCKP LVBCKM LVB0P LVB0M LVB1P LVB1M LVB2P LVB2M LVB3P LVB3M LED_G LED_A ADC1_IN ADC2_IN 12 VDD 6.PANEL & KEY INTERFACE AUDIO AUDIO_EN VOLUME 7.AUDIO 11 PCB No. 13 VLCD VDD 13 VCC3V3 6832190100P01 A B C D E F G ACER X223W Go to cover page 32 P301 1 2 TP1 BACKLIGHT_ADJ BACKLIGHT_EN VDD NOTE:FOR AUDIO POWER 5V 9 8 7 6 5 4 3 2 1 JWT-A2001WV2-9P VDD TP5 100uF/16V C303 4 C302 3 0.1uF 2K4 VDD 5 Su scon UK 3000hrs VCC5V 100uF/16V C307 VCC5V C306 VCC5V 0.1uF TP2 C305 6 TP3 C304 7 0.1uF(NC) 0.1uF C308 47K R304 TP7 R301 R303 G 8 100(22K) 1K S DC PULSE D 3 I301 AO3419/3401 2 8 Su scon UK 3000hrs C310 TP11 C309 47K R305 B 10uF/16V Q301 MMBT3904 VCC3V3 TP14 C314 6 VCC3V3 0.1uF R306 E 7 10K TP10 C Su scon UK 3000hrs 0.1uF TP13 2 PBY160808T-600Y-S C301 R307 FB301 0.1uF 6.4 ACER_LCD_X223W_SCHEMATICS_INTERFACE POWER A B TP12 R308 VOUT 4 2 SOT-223 VIN TAB I302 ADJ 100uF/16V 5 1 C VCC5V PANELVCC_EN 3 1 AIC1084_33PM 4 9 VCC5V R302 R301 NC R302 10 C301 100 4K7 1K(NC) NC 22K PBY160808T-600Y-S 0.1uF FB302 TP4 TP6 VLCD 11 BKLT_ADJ TP9 BKLT_EN C312 TP8 C311 VLCD 12 BKLT_ADJ BKLT_EN VLCD 13 Case_GND Hole4 8 7 6 5 Case_GND 8 7 6 5 Hole3 8 7 6 5 Case_GND 8 7 6 5 Hole2 13 Case_GND 12 Hole1 11 0.1uF 10 0.1uF 9 6832190100P01 4 3 2 1 4K7 VCC5V C313 100uF/16V 3 PCB No. 4 3 2 1 D PANELVCC_EN 2 4 3 2 1 E F G 1 4 3 2 1 3 1 A B C D E F G ACER X223W Go to cover page 33 2 3 TP15 D302 MMBD7000 C320 0.1uF 4 TP16 D303 MMBD7000 VCC5V TP35 D305 47 47 C321 0.1uF MMSZ5232B TP37 R328 R330 TP40 4 3 5 FB303 TP17 FB305 4K7 VCC5V FB307 R320 6 SBK160808T-110Y-S SBK160808T-110Y-S SBK160808T-110Y-S VCC5V R319 47K C325 SBK160808T-451Y-S 0.1uF FB309 3 N P 2 TP165 7 TP166 TP167 FB304 FB306 FB308 8 SBK160808T-600Y-S SBK160808T-600Y-S SBK160808T-600Y-S C327 9 VGA_RIN VGA_GIN 100pF VGA_BIN R324 R313 2K4 75_1% C326 R312 100pF 75_1% R323 R311 2K4 75_1% TP38 D307 TP41 MMSZ5232B 1 2 3 4 D306 24C02 VCC WP SCL SDA I303 VCC_VGA 8 7 6 5 TP50 TP51 9 A0 A1 A2 GND MMSZ5232B TP43 C329 VCC_VGA D309 D308 BAT54C R327 8 VGA_DDC_CLK VGA_DDC_DAT R326 C331 C328 47pF 0.1uF C330 MMSZ5232B 47pF 12K D311 12K MMSZ5232B 7 D310 6 MMSZ5232B 0.1uF TP44 P 1 SBK160808T-451Y-S 5 VCC5V FB310 VGA5V 2 1 D301 MMBD7000 VCC5V TP46 TP49 1 VGA_RED VGA5V VGA_GREEN VGA_CONn VGA_BLUE VGA_HSYNC VCC5V VGA_CONn VGA_HSYNC VGA_VSYNC VGA_SCL VGA_SDA 3 3 2 VGA_SDA VGA_SCL VGA_VSYNC 3 2 MMSZ5232B(NC) D304 C319 0.1uF 1 P302 1 9 2 10 3 11 4 12 5 13 6 14 7 15 8 CONNECTOR DB15 2 1 6.5 ACER_LCD_X223W_SCHEMATICS_INTERFACE BD_VGA A B C D E F G 1 10 TP18 TP23 TP30 R309 R310 68 100 11 TP19 C315 C316 47nF 47nF 47nF TP24 C317 1nF TP21 TP26 C318 68 470 R314 R315 47nF 47nF C322 TP31 C323 12 TP20 TP22 TP25 TP27 TP29 TP32 TP34 RIN GNDR GIN SOG 13 RIN GNDR GIN SOG GNDG BIN GNDB VGA_DETn HSYNC VSYNC DDC_WPn VGA_DDC_CLK VGA_DDC_DAT 13 6832190100P01 GNDG BIN GNDB VGA_DETn HSYNC VSYNC DDC_WPn PCB No. 12 VGA_DDC_DAT VGA_DDC_CLK 4K7 R331 TP48 TP42 TP39 47nF TP33 2K4 R329 C324 TP28 100 68 R316 R317 100 470 R318 R321 470 TP36 HSYNC_IN R322 R325 4K7 2 Q302 MMBT3904 11 TP47 VSYNC_IN TP45 10 3 1 17 16 A B C D E F G ACER X223W Go to cover page 34 VCC3V3 1 VCC3V3 FB311 PBY160808T-301Y-S Su scon UK 3000hrs 2 C349 3 C348 0.1uF TP81 C347 0.1uF VDVI C346 0.1uF C365 C366 C367 0.1uF C368 4 FB312 0.1uF C381 TP99 TP97 VPLL C352 5 C351 0.1uF TP82 C350 0.1uF VMPLL 1uF TP91 C374 0.1uF 37 38 39 40 80 52 53 6 6 FB313 VDVI VMPLL C355 7 C354 0.1uF TP83 C353 0.1uF VPO 7 8 FB314 81 54 55 58 59 60 61 62 63 64 65 67 68 69 70 71 72 73 74 77 78 C358 TP84 C357 0.1uF 9 VAD C356 1uF 41 42 VGA_DETn VOLUME DDC_WPn PANELVCC_EN BKLT_ADJ AUDIO_EN TP103 R361 R362 4K7(NC) TP105 10 VCC3V3 FB315 C361 C362 C363 12 C360 TP85 C359 0.1uF 11 VPO PBY160808T-301Y-S 0.1uF VCTRL TP89 Q305 MMBT2907A 1N4148/NC D326 S1A D325 0.1uF 2 0.1uF D327 R356 TP90 20K(NC) ADC1_IN ADC2_IN TP88 13 R351 50 C370 4.7uF/16V R352 10uF/16V C371 VCC1V8 2K 6832190100P01 13 VCC3V3 10uF/16V C372 1N4148 C375 10K R355 VCC5V 100 R353 1uF(NC) TP96 0.1uF C377 1 2 3 4 PCB No. 12 24C16 A0 A1 A2 GND ADC1_IN ADC2_IN 0.1uF VCC WP SCL SDA I307 C376 C382 8 7 6 5 0.1uF 0.1uF VCC3V3 R360 11 SCL SDA 4K7 TP104 R359 TP106 4K7 VCC5V Su scon UK 3000hrs 10 47 47 DVI_DETn HDCP_CTRLn LED_G LED_A BKLT_EN VGA_DETn VOLUME DDC_WPn PANELVCC_EN BKLT_ADJ AUDIO_EN LVB3P LVB3M LVBCKP LVBCKM LVB2P LVB2M LVB1P LVB1M LVB0P LVB0M LVA3P LVA3M LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M 1uF TP87 C369 0.1uF 35 47 48 85 86 CHIP_STBYn BKLT_EN ADC1_IN ADC2_IN LVB3P LVB3M LVBCKP LVBCKM LVB2P LVB2M LVB1P LVB1M LVB0P LVB0M 87 88 89 90 LED_G LED_A VCC3V3 I2C_SCL I2C_SDA 9 R357 DVI_DETn HDCP_CTRLn 44 43 91 92 93 94 95 99 36 45 46 LVA3P LVA3M LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M PBY160808T-301Y-S VCC3V3 VCC1V8 VCTRL LVA3P LVA3M LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M LVB3P LVB3M LVBCKP LVBCKM LVB2P LVB2M LVB1P LVB1M LVB0P LVB0M GPIO_P23 NC NC GPIO_P47 GPIO_P46 8 GPIO_P10/I2C_MCL GPIO_P11/I2C_MDA GPIO_P07 GPIO_P15 GPIO_P16/PWM1 GPIO_P12 GPIO_P13 GPIO_P14/PWM0 GPIO_P00/SAR0 GPIO_P01/SAR1 GPIO_P02/SAR2 GPIO_P03/SAR3 GPIO_P22/PWM0 GPIO_P24/PWM2 GPIO_P45/PWM1 GPIO_P25 GPIO_P27/PWM3 TSUMU58BWHL-LF RIN0P RIN0M GIN0P GIN0M SOGIN0 BIN0P BIN0M HSYNC0 VSYNC0 DDCA_SDA/RS232_TX DDCA_SCL/rs232_RX R+ RG+ GB+ BCK+ CKDDCD_SDA DDCD_SCL REXT REFP REFM SDO CSZ SCK SDI RST XIN XOUT BYPASS MODE[0] MODE[1] 1uF VPLL VAD VPLL PBY160808T-301Y-S VCC3V3 I305 26 SPI_SDO SPI_CSn SPI_SCK SPI_SDI 84 25 RESET 96 XOUT TP101 BYPASS TP102 97 TP100 XIN TP95 15 23 22 20 19 21 18 17 27 28 30 31 22pF 0.1uF TP92 RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC VGA_DDC_DAT VGA_DDC_CLK 22pF 390_1% 3 4 6 7 9 10 12 13 100 1 5 C383 C380 X301 14.318MHZ C379 R354 RX0+ RX0RX1+ RX1RX2+ RX2RXC+ RXCDVI_DDC_DAT DVI_DDC_CLK PBY160808T-301Y-S VCC3V3 C364 0.1uF RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC VGA_DDC_DAT VGA_DDC_CLK 4 RX0+ RX0RX1+ RX1RX2+ RX2RXC+ RXCDVI_DDC_DAT DVI_DDC_CLK TP94 TP98 R358 10uF/16V C378 VCC5V SPI_SCK SPI_SDI 0.1uF C373 VCC3V3 0.1uF TP86 10uF/16V 8 7 6 5 0.1uF I306 CE# SO WP# GND D328 100K RESET 1N4148 R389 2K4/NC VCC5V Su scon UK 3000hrs PM25LV010A/SST25VF010A VCC HOLD# SCK SI 10uF/16V 1 2 3 4 VCC5V C404 0.1uF/NC TP168 3 34 6.6 ACER_LCD_X223W_SCHEMATICS_INTERFACE BD_SCALER A VCC1V8 2 3 TP93 SPI_CSn SPI_SDO VCC5V I309 VCC 1 2 3 1 B C D E F G RST GND STLMIC810MU/NC 1 GND GND GND GND GND GND GND GND GND GND 2 5 11 29 33 50 57 76 79 83 VDDC 51 66 82 VDDC VDDC VDDC 32 49 56 75 VDDP VDDP VDDP VDDP 24 AVDD_33 16 AVDD_33 98 AVDD_33 8 14 AVDD_33 AVDD_33 A B C D E F G ACER X223W Go to cover page 35 1 LVA0P LVA0M LVA1P LVA1M LVA2P LVA2M LVACKP LVACKM LVA3P LVA3M 2 LVA0P LVA0M LVA1P LVA1M LVA2P LVA2M LVACKP LVACKM LVA3P LVA3M TP107 TP125 3 TP109 TP123 TP111 TP121 TP119 TP113 TP117 TP115 4 6.7 ACER_LCD_X223W_SCHEMATICS_INTERFACE BD_KEY & PANEL INTERFACE A B R363 4K7 TP128 R366 4K7 KEY_MENU 5 LVB0P LVB0M LVB1P LVB1M LVB2P LVB2M LVBCKP LVBCKM LVB3P LVB3M R369 100 6 LVB0P LVB0M LVB1P LVB1M LVB2P LVB2M LVBCKP LVBCKM LVB3P LVB3M VCC3V3 KEY_AUTO 100 KEY_E R372 KEY_LEFT 0. 694V(15Kohm) 0. 498V 6 1. 14V(30Kohm) 0. 846V 5 1. 641V(56Kohm) 4 7 TP108 TP126 TP110 TP124 TP112 TP122 TP118 TP116 8 TP114 TP120 VCC3V3 C389 0.1UF C390 R365 0.1UF 56K_1% C388 R364 0.1UF 56K_1% C386 8 0.1UF 7 9 TP130 TP131 10 VLCD LED_Blue LED_Amber KEY_ADC2 KEY_ADC1 10 11 LVB0M LVB0P LVB1M LVB1P LVB2M LVB2P LVBCKM LVBCKP LVB3M LVB3P LVA0M LVA0P LVA1M LVA1P P306 LVA2M LVA2P LVACKM LVACKP LVA3M LVA3P VLCD VLCD 1 2 3 4 5 6 12 JWT-A2001WV2-06 12 32 31 30 29 28 27 26 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 13 P304 FOR THE DOWN SIDE CVILUX-CF25302D0R0 13 A B G F E C TP127 TP136 11 C LED_A LED_G ADC2_IN KEY_RIGHT 0. 694V(15Kohm) ADC1_IN KEY_POWER 1. 14V(30Kohm) TP137 1. 641V(56Kohm) 0. 498V 3 9 D LED_A LED_G ADC2_IN ADC1_IN ADC2_IN ADC1_IN 0. 846V 2 6832190100P01 D E F G 1 PCB No. ACER X223W Go to cover page 36 3 3 4 5 100 100 56K_1% 30K_1% 15K_1% R605 R606 R607 5 C602 0.1uF(NC) R601 R600 R602 R603 R604 C601 0.1uF(NC) 4 56K_1% 30K_1% 15K_1% 6 6 7 7 8 8 9 9 10 10 11 LEDBLUE 1 4 3 12 2 D601 LED LEDORANGE S604 Menu KEY SW PUSHBUTTON S606 E KEY SW PUSHBUTTON S605 AUTO/EXIT KEY SW PUSHBUTTON S601 POWER KEY SW PUSHBUTTON S603 LEFT KEY SW PUSHBUTTON S602 RIGHT KEY SW PUSHBUTTON 11 B 2 2 12 Y 7 8 JWT-CN125WR0-6PS 1 2 3 4 5 6 P601 1 6.8 ACER_LCD_X223W_SCHEMATICS_FUNCTION _KEY A B C D E F G 1 PCB No. 13 13 6832192500P01 A B C D E F G ACER X223W Go to cover page 37 2 POWER BOARD - TOP SILK 1 6.9 ACER_LCD_X223W_LAYOUTS_POWER BOARD A 3 4 5 6 7 8 9 POWER BOARD - BOTTOM SILK 10 11 12 13 13 A B 12 B 11 C 10 C 9 D 8 D 7 E 6 E 5 F 4 F 3 G 2 G 1 PCB No. ACER X223W Go to cover page 38 6.10 ACER_LCD_X223W_LAYOUTS_INTERFACE BOARD 2 3 4 5 6 7 8 9 10 11 12 13 A 1 A 13 B 12 B 11 C 10 C 9 D 8 D 7 E 6 E 5 F 4 F 3 G 2 G 1 PCB No. ACER X223W Go to cover page 39 3 6.11 ACER_LCD_X223W_LAYOUTS_FUNCTION KEY BOARD 2 4 5 6 7 8 9 10 11 12 13 A 1 A 13 B 12 B 11 C 10 C 9 D 8 D 7 E 6 E 5 F 4 F 3 G 2 G 1 PCB No. ACER X223W Go to cover page 40