LG Flatron M228WA Service Manual
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LG Flatron M228WA Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LP79A
MODEL:
*(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Website:http://biz.LGservice.com
M228WA (M228WA-BMH.A**MLP)
Internal Use Only

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Summary of Contents for LG Flatron M228WA

  • Page 1 Internal Use Only Website:http://biz.LGservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LP79A MODEL: M228WA (M228WA-BMH.A**MLP) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    SERVICE OSD ..................18 TROUBLE SHOOTING ................19 BLOCK DIAGRAM...................25 EXPLODED VIEW .................. 28 REPLACEMENT PARTS LIST ............... 30 SVC. SHEET ....................LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 2 - Only for training and service purposes...

  • Page 3: Precaution

    CAUTION Please use only a plastic screwdriver to protect yourself from shock hazard during service operation. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 3 - Only for training and service purposes...

  • Page 4: Servicing Precautions

    8. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead. Always remove the test receiver ground lead last. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 4 - Only for training and service purposes...
  • Page 5 IC. circuit board to prevent excessive component temperatures. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 5 - Only for training and service purposes...
  • Page 6 Solder the overlapped area and clip off any excess jumper wire. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 6 - Only for training and service purposes...

  • Page 7: Specification

    Humidity : 20% ~ 80% Storage Environment Temp : -10°C ~ 60°C non condensing Humidity : 5% ~ 90% non condensing LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 7 - Only for training and service purposes...
  • Page 8 Typ. 0.342 APC : Clear -0.015 +0.015 GREEN 0.292 ACC : Cool 0.611 White BLUE 0.147 (85 IRE) 0.070 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 8 - Only for training and service purposes...
  • Page 9 67.500 75.000 108.0 1280*1024 63.981 60.02 108.0 1280*1024 79.976 75.035 135.0 1680*1050 64.674 59.883 119.0 1680*1050 65.290 59.954 146.25 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 9 - Only for training and service purposes...
  • Page 10 45.00 60.00 74.250 720p 1920*1080 33.72 59.94 74.176 1080i 1920*1080 33.75 60.00 74.250 1080i 1920*1080 28.125 50.00 74.250 1080i LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 10 - Only for training and service purposes...

  • Page 11: Disassembly

    Hold the stand base. Disassembly Stand base. Remove base body Like a picture. Push 2 letches Like a picture. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 11 - Only for training and service purposes...
  • Page 12 1. Remove the screws. 2. Disassembly Hinge Cover. # 10 Remove the screws. Disassembly back cover. # 11 Pull the connector. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 12 - Only for training and service purposes...

  • Page 13: Adjustment Instruction

    7) After downloading, check “OK” message. (480p Mode, Y : 100%, Pb/Pr : 75%) PATTERN : 08 in Pattern Generator (MSPG-925 SERISE) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 13 - Only for training and service purposes...

  • Page 14: Function Check

    - Set ACC : sRGB - Confirm whether x = 0.313±0.03, y = 0.329±0.03 or not. - Confirm whether luminance = 180±50 cd/m LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...
  • Page 15 - If Tool option(7682)/Area option(Braz) is not, change the Automatically turn off. (Must not AC power OFF during Too option(7682)/Area option(Braz) value compulsorily. blinking) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 15 - Only for training and service purposes...
  • Page 16 Buffer to PC. (128th Data is the CheckSum of 127-bytes data : That’s OK if the value of adding 128-bytes Data is Zero) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 16 - Only for training and service purposes...
  • Page 17 Click “ Write” button c) Remove all default number d) Add 300-3FF e) Click Start button. f) Click Exit button. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 17 - Only for training and service purposes...

  • Page 18: Service Osd

    (110V/220V) 74LS06 Power LED 4.7K 74LS06 ST Switch V-Sync On/Off Switch (Switch must be ON.) Figure 1. Cable Connection LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 18 - Only for training and service purposes...

  • Page 19: Trouble Shooting

    IC100, IC400. IC1105(3.3V) Pass Pass Change IC1104, IC1105. Fail Change LED Assy. Check LED Assy. Pass Check P304 Connector. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 19 - Only for training and service purposes...
  • Page 20 Fail Check the LVDS Output Change IC100 of IC100 Pass Fail Check Input source Cable Change Module. and Jack. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 20 - Only for training and service purposes...
  • Page 21 Fail Check the input/output of defect part, Check the IC100. X100. Pass Check input source cable and jack. X100 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 21 - Only for training and service purposes...
  • Page 22 Fail Check the input/output of defect part, Check the IC100. X100. Pass Check input source cable and jack. X100 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 22 - Only for training and service purposes...
  • Page 23 Fail Check Output of X100 defect part, Check the IC1104, IC1105. X100. Pass Check input source cable and jack. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 23 - Only for training and service purposes...

  • Page 24: No Sound

    Check the input/ output the defect part. of IC500 Pass Fail Change Speaker. Check the Speaker Pass Check the Speaker wire. X100 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 24 - Only for training and service purposes...

  • Page 25: Block Diagram

    BLOCK DIAGRAM LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 25 - Only for training and service purposes...

  • Page 26: Description Of Block Diagram

    The audio signal is amplified according to pre-defined DC volume control curve. Also, headphone amplifier is included at this IC. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 26 - Only for training and service purposes...

  • Page 27: Lips Board Block Diagram

    This part function is to collect the any change from the DC output and feed back to the primary through photo transistor. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 27 - Only for training and service purposes...

  • Page 28: Exploded View

    EXPLODED VIEW LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 28 - Only for training and service purposes...

  • Page 29: Exploded View Parts List

    Speaker,Full Range, L07030A-027 ND35 3W 16OHM 85DB 300HZ 30 X 70 X 22 SOLDER SUNLINK COMPANY EAJ33945801 LCD,Module-TFT, LM220WE1-TLA1 DRIVER 22.0INCH 1680X1050 300CD COLOR 72% 16/10 800:1 160/160 5ms 4LAMPS LG PHILIPS LCD ABJ32411704 Cabinet Assembly, M228WA M228WA_CABINET ASS'Y ETC M228WA CABINET ASS'Y (22") _ Brazil Version_ CKD...

  • Page 30: Replacement Parts List

    "Capacitor,Ceramic,Chip0603B102K5" C1120 0CE107WF6DC "Capacitor,AL,ChipMVK6.3TP16VC100" C147 0CK473CK56A "Capacitor,Ceramic,ChipC1608X7R1H" C1122 0CK226FF67A "Capacitor,Ceramic,ChipEMK325BJ22" C148 0CK473CK56A "Capacitor,Ceramic,ChipC1608X7R1H" C1124 0CE477EH618 "Capacitor,AL,RadialKMG5.0TP25VB4" C149 0CK473CK56A "Capacitor,Ceramic,ChipC1608X7R1H" LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 30 - Only for training and service purposes...
  • Page 31 "Capacitor,Ceramic,ChipC1608C0G1H" C308 0CC101CK41A "Capacitor,Ceramic,ChipC1608C0G1H" C705 0CK104CK56A "Capacitor,Ceramic,Chip0603B104K5" C309 0CE107WF6DC "Capacitor,AL,ChipMVK6.3TP16VC100" C706 0CC680CK41A "Capacitor,Ceramic,ChipC1608C0G1H" C310 0CE107WF6DC "Capacitor,AL,ChipMVK6.3TP16VC100" C707 0CC680CK41A "Capacitor,Ceramic,ChipC1608C0G1H" LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 31 - Only for training and service purposes...
  • Page 32 "Filter,BeadHH-1M3216-501JT 500OH" ZD1020 0DZ560009GB "Diode,ZenerBZT52C5V6S-(F) 5.6V 5" L1114 6200J00005E "Filter,BeadHH-1M2012-601JT 600OH" ZD1021 0DZ560009GB "Diode,ZenerBZT52C5V6S-(F) 5.6V 5" L1116 6200J00005E "Filter,BeadHH-1M2012-601JT 600OH" LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 32 - Only for training and service purposes...
  • Page 33 0RJ1000D677 "Resistor,ChipMCR03EZPJ101 100OHM" R1022 0RJ0152D677 "Resistor,ChipMCR03EZPJ150 15OHM" R157 0RJ0332D677 "Resistor,ChipMCR03EZPJ330 33OHM" R106 0RJ1002D677 "Resistor,ChipMCR03EZPJ103 10KOHM" R158 0RJ0332D677 "Resistor,ChipMCR03EZPJ330 33OHM" LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 33 - Only for training and service purposes...
  • Page 34 0RJ0682D677 "Resistor,ChipMCR03EZPJ680 68OHM" R260 0RJ1002D677 "Resistor,ChipMCR03EZPJ103 10KOHM" R710 0RJ0752D677 "Resistor,ChipMCR03EZPJ750 75OHM" R264 0RJ1002D677 "Resistor,ChipMCR03EZPJ103 10KOHM" R711 0RJ0102D677 "Resistor,ChipMCR03EZPJ100 10OHM" LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 34 - Only for training and service purposes...
  • Page 35 6602T20009E "Connector,WaferSMAW200-06P 6P 2." P306 6602T20009B "Connector,WaferSMAW200-03P 3P 2." P4000 6602T20009B "Connector,WaferSMAW200-03P 3P 2." P500 6602T20009C "Connector,WaferSMAW200-04P 4P 2." LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 35 - Only for training and service purposes...

  • Page 36: Schematic Diagram

    SCHEMATIC DIAGRAM 1. MSTAR LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 36 - Only for training and service purposes...
  • Page 37 2. PANEL & CONNECTOR LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 37 - Only for training and service purposes...
  • Page 38 3. DDR LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 38 - Only for training and service purposes...
  • Page 39 4. AMP LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 39 - Only for training and service purposes...
  • Page 40 5. D-SUB & DVI LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 40 - Only for training and service purposes...
  • Page 41 6. JACK LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 41 - Only for training and service purposes...
  • Page 42 7. POWER LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 42 - Only for training and service purposes...

  • Page 43: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN (TOP) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 43 - Only for training and service purposes...
  • Page 44 MAIN (BOTTOM) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 44 - Only for training and service purposes...
  • Page 45 CONTROL LED & P/SW LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 45 - Only for training and service purposes...
  • Page 46 Apr. 2007 P/NO : MFL36713685 Printed in Korea...

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