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LG FLATRON E2050S Service Manual
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LG FLATRON E2050S Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LM99C
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
E2050S(E2050S-PFV.A***AVN)
Internal Use Only

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Summary of Contents for LG FLATRON E2050S

  • Page 1 Internal Use Only Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM99C E2050S(E2050S-PFV.A***AVN) MODEL: ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    Vertical : 56 ~ 75Hz 8. WEIGHT (with TILT/SWIVEL) 2.6kg (5.73 lbs) Net. Weight Gross Weight 4.2kg (9.26 lbs) Copyright 2007 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 2007 LG Electronics. Inc. All right reserved. - 3 - 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 2007 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 2007 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 2007 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...

  • Page 7: Timing Chart

    V(Lines) 75.029 H(Pixels) 67.500 1600 1152 1152x864 108.0 V(Lines) 75.000 H(Pixels) 60.00 1800 1600 1600x900 108.0 V(Lines) 60.00 1000 Copyright 2007 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. Disassemble back cover. 2. Then, let the all latches are separated. 3. Put the front face down. Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 1. Pull the front cover upward. Disassemble back cover. 2. Then, let the all latches are separated. 3. Put the front face down. - 9 - Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 10: Block Diagram

    BLOCK DIAGRAM Panel D-SUB Adapter Copyright 2007 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: 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 flash memory. Copyright 2007 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only...
  • Page 12 This part function is to collect the any change from the DC output and feed back to the primary through photo transistor. Copyright 2007 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...

  • Page 13: Adjustment

    Click “ Write” button c) Remove all default number d) Add 300-3FF e) Click Start button. f) Click Exit button. Copyright 2007 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 (110V/220V) 74LS06 Power LED 4.7K 74LS06 ST Switch V-Sync On/Off Switch (Switch must be ON.) Figure 1. Cable Connection Copyright 2007 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15: Troubleshooting Guide

    CHECK CHECK IC601 PIN2(5V) PIN3(1.8V) CHECK IC500 PIN64 PULSE CRYSTAL(X500) CHECK IC500 Waveforms IC502 - #3 IC600-#1 IC502-#1 IC500-#64 Copyright 2007 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 CHECK IC500 CHECK IC700 PIN2(3.3V) CHECK IC700,IC502 CHECK P700 PIN4(ABOUT 45V) REPLACE LCD MODULE Waveforms P700 -#4 IC600 -#1 Copyright 2007 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 PIN15(V-SYNC). FROM D-SUB TO IC500 IS PULSE APPEARED AT SIGNAL PINS? TROUBLE IN CABLE OR LCD MODULE Waveforms IC500-#63,64 Copyright 2007 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 INTO DPM MODE APPEARED? CHECK IC500 PIN14,15 CHECK H/V SYNC LINE SYNC PULSE TROUBLE IN IC500 Waveforms 1 H-SYNC 2 V-SYNC Copyright 2007 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 WIRING DIAGRAM Copyright 2007 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 JAN. 2010 P/NO : MFL59082043 Printed in China...