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LG FLATRON E2041T Service Manual
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LG FLATRON E2041T Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LM10E
MODEL:
(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
E2041T
(E2041T-**X)
Internal Use Only

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Summary of Contents for LG FLATRON E2041T

  • Page 1 Internal Use Only Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM10E MODEL: E2041T (E2041T-**X) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    Vertical : 56 ~ 75Hz : 2.7 kg (5.95 lbs) Net. Weight : 4.07 kg (8.97 lbs) Gross Weight Copyright 2010 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Precautions

    CAUTION Please use only a plastic screwdriver to protect yourself from shock hazard during service operation. Copyright - 3 - 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 4 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. Copyright 2010 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 IC. circuit board to prevent excessive component temperatures. Copyright 2010 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 6 Solder the overlapped area and clip off any excess jumper wire. Copyright 2010 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...

  • Page 7: Timing Chart

    75.029 H(Pixels) 67.500 1600 1152 1152 108.0 V(Lines) 75.000 H(Pixels) 60.00 1800 1600 1600 x 108.0 V(Lines) 60.00 1000 Copyright 2010 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8: Disassembly

    1. Pull the front cover upward. 2. Then, let the all latches are separated. 3. Put the front face down. Disassemble back cover. - 8 - Copyright 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 9: Block Diagram

    BLOCK DIAGRAM Copyright 2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Description Of Block Diagram

    The Micom distinguishes polarity and frequency of the H/V sync are supplied from signal cable. The controlled data of each modes is stored in. Copyright 2010 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 This part function is to collect the any change from the DC output and feed back to the primary through photo transistor. 7. LED driver block This part function is to drive LED Back light. Copyright 2010 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...

  • Page 12: Adjustment

    Click “ Write” button c) Remove all default number d) Add 300-3FF e) Click Start button. f) Click Exit button. Copyright 2010 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 (110V/220V) 74LS06 Power LED 4.7K 74LS06 ST Switch V-Sync On/Off Switch (Switch must be ON.) Figure 1. Cable Connection Copyright 2010 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Troubleshooting Guide

    IS IC504 OUT PIN CHECK IC504(3.3V) IC505(1.8V) IC505 OUT PIN CHECK IC500 Pin 94 CHECK CRYSTAL(X500) PULSE CHECK IC500 Waveforms P602#1,2 IC500#94 Copyright 2010 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 P602 PIN10 2. CHECK A_DIM port CHECK POWER BOARD (LIPS) the LED backlight current REPLACE LCD MODULE Waveforms P602 #1,2 Copyright 2010 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 3. TROUBLE IN IC500 CHECK CHECK CONNECTION LINE IC500 Pin25(H-SYNC) FROM D-SUB TO IC500 And Pin26(V-SYNC) TROUBLE IN CABLE OR LCD MODULE Copyright 2010 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 INTO DPM MODE CHECK IC500 PIN25,26 CHECK H/V SYNC LINE SYNC PULSE TROUBLE IN IC500 Waveforms 1 H-SYNC 2 V-SYNC Copyright 2010 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...

  • Page 18: Wiring Diagram

    WIRING DIAGRAM EAD57188316 EAD61466511 6631900013B EAD38438703 EAD38438703 Copyright 2010 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Copyright 2010 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 NOV.2010 P/NO : Printed in China MFL67099801...