LG FLATRON W2453V Service Manual
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LG FLATRON W2453V Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LM91C
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
W2453V(W2453V-PFV.A***APN)
Internal Use Only

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Summary of Contents for LG FLATRON W2453V

  • Page 1 Internal Use Only Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM91C W2453V(W2453V-PFV.A***APN) 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 : 5.39 kg (11.88 lbs) Net. Weight : 7.24 kg (15.96 lbs) Gross Weight 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

    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 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 EEPROM. 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 IC303 PIN1(3.3V) IC303 PIN4(1.8V) IC301 PIN2 CHECK IC101 PIN25 CHECK CRYSTAL(X101) PULSE CHECK IC101 Waveforms IC303- #2 P301-#5,6 IC303 IC101 Copyright 2007 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 POWER BOARD (LIPS) TO THE LAMP WIRE OF THE LCD MODULE REPLACE LCD MODULE Waveforms P301 -#10 P301-#5,6 LAMP CURRENT Copyright 2007 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 PIN66(V-SYNC). FROM D-SUB TO IC101 IS PULSE APPEARED AT SIGNAL PINS? TROUBLE IN CABLE OR LCD MODULE Waveforms IC101 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 IC101 PIN65,66 CHECK H/V SYNC LINE SYNC PULSE TROUBLE IN IC101 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

    WIRING DIAGRAM EAD57188305 6631T20023J EAD60663001 Copyright 2007 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...

  • Page 20: Exploded View

    EXPLODED VIEW - 20 -...

  • Page 23: Schematic Diagram

    SCHEMATIC DIAGRAM 1. SCALER Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 3. Control Copyright 2007 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 26 FEB. 2009 P/NO : MFL59082011 Printed in China...

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