LG FLATRON N1642W-PF.ATR Service Manual
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LG FLATRON N1642W-PF.ATR Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : L M97A
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
N1642W (N1642W-PFT.A***AP*)
Internal Use Only

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Summary of Contents for LG FLATRON N1642W-PF.ATR

  • Page 1 Internal Use Only Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : L M97A MODEL: N1642W (N1642W-PFT.A***AP*) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    : 3.6 kg (8. 0 lbs) Input Form RGB Analog (0.7 Vp-p/ 75 ohm) X-PORT Signal Input X-PORT Connector • Input Form X-PORT Signal 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. - 4 - Copyright 2007 LG Electronics. Inc. All right reserved. 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

    48.363 1344 1024 65.0 1024 x 768 V(Lines) 60.0 H(Pixels) 47.712 1792 1360 85.5 1360 x 768 60.015 V(Lines) Copyright 2007 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8: Disassembly

    Please pull off the latch first. Then separate stand body and base cover. - 8 - Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 9: Block Diagram

    BLOCK DIAGRAM LVDS LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 9- Only for training and service purposes...
  • Page 10 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. - 10 - LGE Internal Use Only...

  • Page 11: Description Of Block Diagram

    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 - 13 - Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 14: Troubleshooting Guide

    Is IC100 Pin75 (3.3V) Check 3.3V Line Voltage ? Check IC100 Pin 96 Check X-TAL Pulse Check IC100 Waveforms IC100-#96 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...
  • Page 15 (CONTACT PROBE TO CAUTION LABEL. CAN YOU SEE PULSE AT YOUR SCOPE? REPLACE CCFL LAMP IN THE LCD MODULE LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 15 - Only for training and service purposes...
  • Page 16 AT SIGNAL PINS? AT MODE 12? TROUBLE IN CABLE OR LCD MODULE Waveforms 2 IC100-#28 V-SYNC IC100-#96, 97 IC100-#27 H-SYNC LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 16 - Only for training and service purposes...
  • Page 17 INTO DPM OFF MODE CHECK IC100 PIN 27,28 CHECK H/V SYNC LINE SYNC PULSE ? TROUBLE IN U501 Waveforms R221 H-Syn R222V-Sync LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 17 - Only for training and service purposes...

  • Page 18: Wiring Diagram

    WIRING DIAGRAM EAD57188308 EAD42157801 6631900030L Copyright 2007 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...

  • Page 19: Exploded View

    EXPLODED VIEW - 19 -...
  • Page 20 EXPLODED VIEW PARTS LIST * Note: Safety mark Ref. No. Part No. Description ABJ36436113 Cabinet Assembly,W1642 ... 16" - MEY40926601 Knob, MOLD ABS HF-350 MAIN 5 key WX42 BLACK MBG41956001 Button,Power, MOLD ABS WX42 translucent ABS power button + lens ACQ73457501 Cover Assembly,Rear, W1642 ...

  • Page 21: Replacement Parts List

    SCHEMATIC DIAGRAM 1. SCALER LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. -21- Only for training and service purposes...
  • Page 22 2. INTERFACE LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 22- Only for training and service purposes...
  • Page 23 PC201:2 PS2561BL1-1-V-A(G) C107 ZD105 ZD104 BZX79-B11,133 C106 1nF 50V K CX101 330nF 300VAC 806K 1/4W F 806K 1/4W F R103 R101 R102 806K 1/4W F CY103 CY102 100pF 250VAC 100pF 250VAC C104 100nF 50V K BD101 D2SB60-7000 47nF 500V K 47nF 500V K C105 C109...
  • Page 24 R315 R313 100K 1/8W F 10K 1/8W F C301 1uF 25V K Q310 2N7002A-RTK/P R316 R317 10K 1/8W F C303 9.53K 1/8W F 470uF 25V M C326 R319 1N4148TA D314 C304 R304 C313 287K 1/8W F 80.6K 1/8W F R314 C325 1nF 50V J R306...

  • Page 25: Schematic Diagram

    Mar . 2009 P/NO : MFL59082025 Printed in China...

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