LG Flatron L206WU Service Manual
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LG Flatron L206WU Service Manual

LG Flatron L206WU Service Manual

Color monitor
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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : LM62C
MODEL:
(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Website:http://biz.LGservice.com
L206WU(L206WU-WFS.A**MAP)
Internal Use Only

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Summary of Contents for LG Flatron L206WU

  • Page 1: Color Monitor

    Internal Use Only Website:http://biz.LGservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM62C MODEL: L206WU(L206WU-WFS.A**MAP) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    : 1680 x 1050@60Hz Pack 2) Operating Systems (O/S) are supported. Digital : 1680 x 1050@60Hz * When the installation of "LG USB Easy Connection" program is completed and check picture. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved.

  • Page 3: Signal Connector Pin Assignment

    +5V Power Ground (return for +5V, H. Sync. and V. Sync.) T. M. D. S. (Transition Minimized Differential Signaling) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 3 - 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. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 4 - Only for training and service purposes...

  • Page 5: Copyright 2007 Lg Electronics. Inc. All Right Reserved

    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. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 5 - Only for training and service purposes...

  • Page 6: Only For Training And Service Purposes

    IC. circuit board to prevent excessive component temperatures. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 6 - Only for training and service purposes...

  • Page 7: Copyright 2007 Lg Electronics. Inc. All Right Reserved

    Solder the overlapped area and clip off any excess jumper wire. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 7 - Only for training and service purposes...

  • Page 8: Timing Chart

    H(Pixels) 64.674 1840 1680 1680x1050 V(Lines) 59.883 1080 1050 H(Pixels) 146.25 65.290 2240 1680 1680x1050 V(Lines) 59.954 1089 1050 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 8 - 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. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 9 - Only for training and service purposes...

  • Page 10: Block Diagram

    BLOCK DIAGRAM Module DN(X2) D-Sub DVI-D LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 10 - 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. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 11 - Only for training and service purposes...

  • Page 12: Copyright 2007 Lg Electronics. Inc. All Right Reserved

    This part function is to collect the any change from the DC output and feed back to the primary through photo transistor. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 12 - 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. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 13 - Only for training and service purposes...

  • Page 14: Service Osd

    (110V/220V) 74LS06 Power LED 4.7K 74LS06 ST Switch V-Sync On/Off Switch (Switch must be ON.) Figure 1. Cable Connection LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...

  • Page 15: Troubleshooting Guide

    IS IC302 PIN2(1.8V) IC703(3.3V) LINE IC301 PIN2(3.3V) CHECK X200 PIN201 CHECK CRYSTAL(X501) PULSE CHECK IC200 Waveforms P703-#5,6 IC302-#2 IC301-#2 X200-#201 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 15 - Only for training and service purposes...
  • Page 16 WIRE OF THE LCD MODULE Waveforms P703-#5,6 P703-#9 REPLACE LCD MODULE P703-#11 (Brightness 100) P703-#10 (Brightness 0) LAMP CURRENT LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 16 - Only for training and service purposes...
  • Page 17 PIN33(V-SYNC). FROM D-SUB TO IC502 IS PULSE APPEARED AT SIGNAL PINS? TROUBLE IN CABLE OR LCD MODULE Waveforms U502-#201 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 17 - Only for training and service purposes...
  • Page 18 APPEARED? CHECK IC200 PIN 32,33 CHECK H/V SYNC LINE SYNC PULSE TROUBLE IN IC502 Waveforms 1 H-SYNC 2 V-SYNC LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 18 - Only for training and service purposes...
  • Page 19 IC606 P1 (5V_USB)=5V IC606 P3 CHECK IC606 (VUSB3-3V)=3V IC602 P52 CHECK PC X601=24Mhz CHECK X601 CHECK IC602 IC602 P8,P9 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 19 - Only for training and service purposes...
  • Page 20 CHECK IC601 P47=3.3V X500=12Mhz CHECK X500 IC601 P3 CHECK IC601 (NANWP) *IC505 (NAND Flash memory) CHECK PROGRAM WIRTE IC605 P12,P37=3.3V LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 20 - Only for training and service purposes...
  • Page 21 IC606 P1 (5V_USB)=5V IC606 P3 CHECK IC606 (VUSB3-3V)=3.3V IC602 P52 CHECK PC X601=24Mhz CHECK X601 CHECK IC602 IC602 P5,P6 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 21 - Only for training and service purposes...
  • Page 22 P78(VSYNC) *IC502(Silicon image) TLL=>TMDS IC502 P34(2RXC-) CHECK IC502 P35(2RXC+) *IC702(Analog switch) IC301=3.3V CHECK IC301,306 IC306=1.5V CHECK IC702 IC702 P18(PXC-) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 22 - Only for training and service purposes...
  • Page 23 CHECK IC302 IC302=1.8V CHECK X200 X200=14.3Mhz CHECK IC200 P704 P20 USB DISPLAY DRIVER DRIVER SET UP SET UP? CHECK PANEL LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 23 - Only for training and service purposes...

  • Page 24: Exploded View

    EXPLODED VIEW LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 24 - Only for training and service purposes...

  • Page 25: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM) Copyright 2007 LG Electronics. Inc. All right reserved. - 32 - LGE Internal Use Only Only for training and service purposes...

  • Page 26: Replacement Parts List

    CONTROL Copyright 2007 LG Electronics. Inc. All right reserved. - 33 - LGE Internal Use Only Only for training and service purposes...

  • Page 27: Schematic Diagram

    SCHEMATIC DIAGRAM 1. SCALER Copyright 2007 LG Electronics. Inc. All right reserved. - 34 - LGE Internal Use Only Only for training and service purposes...
  • Page 28 2. USB DISPLAY Copyright 2007 LG Electronics. Inc. All right reserved. - 35 - LGE Internal Use Only Only for training and service purposes...
  • Page 29 3. DC-DC & POWER Copyright 2007 LG Electronics. Inc. All right reserved. - 36 - LGE Internal Use Only Only for training and service purposes...
  • Page 30 4. WAFER Copyright 2007 LG Electronics. Inc. All right reserved. - 37 - LGE Internal Use Only Only for training and service purposes...
  • Page 31 5. USB & FLASH Copyright 2007 LG Electronics. Inc. All right reserved. - 38 - LGE Internal Use Only Only for training and service purposes...
  • Page 32 Jun. 2007 P/NO : MFL36713676 Printed in Korea...

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