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LG FLATRON E2350V Service Manual
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LG FLATRON E2350V Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LM99D
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
E2350V(E2350V-PFV.A***AVN)
Internal Use Only

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Summary of Contents for LG FLATRON E2350V

  • Page 1 Internal Use Only Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM99D MODEL: E2350V(E2350V-PFV.A***AVN) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    Net. Weight Gross Weight 5.43 kg (11.97 lbs) HDMI: Horizontal : 30 ~ 83kHz Vertical : 56 ~ 61Hz Copyright 2007 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
  • Page 3 +5V Power Ground (return for +5V, H. Sync. and V. Sync.) T. M. D. S. (Transition Minimized Differential Signaling) Copyright 2007 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: 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. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 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. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 6 IC. circuit board to prevent excessive component temperatures. Copyright 2007 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 Solder the overlapped area and clip off any excess jumper wire. Copyright 2007 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8: Timing Chart

    H(Pixels) 65.290 2240 1680 1680x1050 146.25 59.954 1089 1050 V(Lines) H(Pixels) 67.50 2200 1920 1920x1080 148.50 V(Lines) 1125 1080 Copyright 2007 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...

  • Page 9: Disassembly

    DISASSEMBLY-Set - 9 - Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 DISASSEMBLY-Set # 10 - 9 - Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 11: Block Diagram

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

  • Page 12: 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. - 12 - LGE Internal Use Only...
  • Page 13 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 14: 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 15 (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 16: Troubleshooting Guide

    CHECK IC601 CHECK IC602 PIN2(5V) PIN1(3.3V),PIN3(1.2V) CHECK Q800 CHECK CRYSTAL(X500) PIN3 CHECK IC500 Waveforms IC601- #1 IC602-#1 IC601-#3 X500-#127 Copyright 2007 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 CHECK IC600 CHECK ADAPTER VOLTAGE PIN1 (12V)? CHECK IC800,Q800,IC500, P801 PIN3,4(about 44V) IC601,IC602 REPLACE LCD MODULE Waveforms IC602-#1 P800-#3,4 Copyright 2007 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 PIN21(V-SYNC). FROM D-SUB TO IC500 IS PULSE APPEARED AT SIGNAL PINS? TROUBLE IN CABLE OR LCD MODULE Waveforms IC500 Copyright 2007 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 INTO DPM MODE APPEARED? CHECK IC500 PIN21,22 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. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 WIRING DIAGRAM Copyright 2007 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 26 JAN. 2010 P/NO : MFL59082050 Printed in China...