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LG 32LH20R Service Manual
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LG 32LH20R Service Manual

Chassis: lp91a
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See also: Owner's Manual
LCD TV

SERVICE MANUAL

CHASSIS : LP91A
MODEL : 32LH20R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
North/Latin America
Europe/Africa
Asia/Oceania
32LH20R-MA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com

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Summary of Contents for LG 32LH20R

  • Page 1: Service Manual

    Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD TV SERVICE MANUAL CHASSIS : LP91A MODEL : 32LH20R 32LH20R-MA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION..............11 TROUBLE SHOOTING ................16 BLOCK DIAGRAM...................19 EXPLODED VIEW .................. 20 SVC. SHEET ....................Copyright 2009 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Product Safety

    An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright 2009 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    Copyright 2009 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright 2009 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    32” HD LDC Module 760 x 450 x 48 with inverter (Maker : LGD) 0.17025 x 0.51075 12 EEFL Coating Copyright 2009 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 1920* 1080 56.25 148.5 HDTV 1080P 1920* 1080 67.432 59.94 148.350 HDTV 1080P 1920* 1080 67.5 60.00 148.5 HDTV 1080P Copyright 2009 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8: Hdmi Input

    60.00 148.5 HDTV 1080P 1920 x 1080 24.00 74.25 HDTV 1080P 1920 x 1080 33.75 30.00 74.25 HDTV 1080P Copyright 2009 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 -> 0 † f † 1.0 Gap g between Back Cover and Side AV -> 0 † g † 1.0 Copyright 2009 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 C:Interval between top of active area and bezel D:Interval between bottom of active area and beze Active Area Bezel Copyright 2009 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Adjustment Instruction

    4) Read and write bin file. Click “(1)Read” tab, and then load download file(XXXX.bin) by clicking “Read”. Filexxx.bin Filexxx. Copyright 2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 EDID. If the cables are connected, Downloading of edid could be failed. 5) Check The update SW Version. Copyright 2009 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 ENTER( 6) ADC adjustment is executed automatically . 7) When ADC adjustment is finished, this OSD appear Copyright 2009 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 (3) Auto W/B adjustment instrument(only for Auto adjustment) 11) When adjustment is completed, Enter “COPY ALL”. 12) Exit adjustment mode using EXIT key on R/C. Copyright 2009 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 Dynamic Colour : Off (If you miss the upper condition, the coordinates of W/B can be lower than the spec.) Copyright 2009 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...

  • Page 16: Troubleshooting

    Or Inverter Fail Or Inverter Pass Check Output of IC802 Change IC802 Fail Pass Check LVDS Cable Change Module Fail Copyright 2009 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 Repeat [A], & [B] Process Check the Input/Output Re-soldering or Change the defect part Of IC800 Fail Pass Repeat [A], & [B] Process Copyright 2009 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 Of IC600 Fail Change the defect part Pass Change Speaker Check The Speaker Fail Pass Check The Speaker Wire Copyright 2009 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...

  • Page 19: Block Diagram

    BLOCK DIAGRAM connector connector Copyright 2009 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...

  • Page 20: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 SCHEMATIC DIAGRAM MSTAR...
  • Page 22 DDR2...
  • Page 23 POWER...
  • Page 24 AUDI...
  • Page 25 TUNER...
  • Page 26 HDMI...
  • Page 27 INPUT1...
  • Page 28 INPUT2...
  • Page 29 LVDS/ CTR KEY...
  • Page 30 Feb., 2009 P/NO : MFL60021515 Printed in Korea...

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