LG FLATRON W2353S Service Manual
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LG FLATRON W2353S Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LM84K
MODEL:
(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
W2353S(W2353S-PFV.A***AP*)
Internal Use Only
Website:http://biz.LGservice.com

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Summary of Contents for LG FLATRON W2353S

  • Page 1: Specifications

    Internal Use Only Website:http://biz.LGservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM84K MODEL: W2353S(W2353S-PFV.A***AP*) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    8. WEIGHT (with TILT/SWIVEL) Vertical : 56 ~ 75Hz 4.5kg (9.92 lbs) Net. Weight Gross Weight 6.07 kg (13.38 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

    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. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8: Disassembly

    DISASSEMBLY Put a cushion or soft cloth on a flat Place the monitor face down on surface. the cushion or soft cloth. Change your lock on the product as it follows and turn it in the arrow direction. If you can't release the stand base even the locking rib is at a release position, Please push the indicated rib down and retry it.

  • Page 9: Block Diagram

    BLOCK DIAGRAM Panel D-SUB AC input Copyright 2007 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 FLASH ROM. Copyright 2007 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only...
  • Page 11 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. - 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 2007 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 2007 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Troubleshooting Guide

    IS IC1 PIN1(3.3V) IC1(1.8V) LINE IC1 PIN4(1.8V) CHECK U201 PIN1 CHECK CRYSTAL(X501) PULSE CHECK U201 Waveforms P605-#5,6 IC1-#2 IC-#2 U201-#1 Copyright 2007 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 WIRE OF THE LCD MODULE Waveforms P605-#5,6 P605-#9 REPLACE LCD MODULE P605-#10 (Brightness 100) P605-#10 (Brightness 0) LAMP CURRENT Copyright 2007 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 PIN17(V-SYNC). FROM D-SUB TO U201 IS PULSE APPEARED AT SIGNAL PINS? TROUBLE IN CABLE OR LCD MODULE Waveforms U201-#1 Copyright 2007 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 APPEARED? CHECK U201 PIN 16,17 CHECK H/V SYNC LINE SYNC PULSE TROUBLE IN U201 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: 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 20 Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 3. Control Copyright 2007 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 Jun. 2009 P/NO : MFL59082036 Printed in China...

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