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LG 37LC50CB Service Manual
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LG 37LC50CB Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LA64A
MODEL : 37LC50CB
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
North/Latin America
Europe/Africa
Asia/Oceania
37LC50CB-UA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com

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Summary of Contents for LG 37LC50CB

  • Page 1 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 : LA64A MODEL : 37LC50CB 37LC50CB-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION ...............12 TROUBLE SHOOTING ................18 BLOCK DIAGRAM...................24 EXPLODED VIEW .................. 25 REPLACEMENT PARTS LIST ............... 27 SVC. SHEET ....................Copyright © 2008 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 © 2008 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
  • Page 4 Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the Copyright © 2008 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright © 2008 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    2) Humidity : ~ 80 % Storage Environment 1) Temp. : -20 ~ 50 deg 2) Humidity : 10 ~ 90 % Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 59.94 HDTV 720P 1280*720 45.00 60.00 HDTV 720P 1920*1080 33.72 59.94 HDTV 1080I 1920*1080 33.75 60.00 HDTV 1080I Copyright © 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 59.94 HDTV 720P 1280*720 45.00 60.00 HDTV 720P 1920*1080 33.72 59.94 HDTV 1080I 1920*1080 33.75 60.00 HDTV 1080I Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 Power Consumption 168.36 Watt Weight 110(Typ), 12(Max) Display Operating Mode Transmissive mode ,normally black Surface Treatment Hard coating (3H) Copyright © 2008 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 X axis right(ø=0) degree X axis left(ø=180) Yaxis up (ø=90) Z axis down(ø=270) Gray Scale Without DCR With DCR Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 ( Default : 0000 ) Block channel None Movie Rating TV Rating-Children TV Rating-General Audio Block Channel Memory none Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...

  • Page 12: Adjustment Instruction

    Auto RF Color Balance adjustment. - RF 2CH EDID/DDC Data input. Adjustment of White Balance. Factoring Option Data input. Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 Red Offset2 Green Offset2 Blue Offset2 Red Gain Green Gain Blue Gain Reset To Set Default Value on OSD Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 Blue Gain Blue Gain Reset To Set Reset To Set Default Value on OSD Default Value on OSD Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 Red Offset2 Green Offset2 Blue Offset2 Red Gain Green Gain Blue Gain Reset To Set Default Value on OSD Copyright © 2008 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 0.329 ± 0.002 6500k (0.003) 6) When adjustment is completed, Exit adjustment mode using EXIT key on R/C. Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 Check Jig(With level Shifter), 232C to Phone jack Cable, 5V Adapter, 232C Cable(Cross) 232C Cable(Cross) 2EZ, RJ45(Direct) Cable. 10.4 MPI Card Check Copyright © 2008 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...

  • Page 18: Troubleshooting

    TROUBLESHOOTING Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Copyright © 2008 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 Copyright © 2008 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 Copyright © 2008 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 Copyright © 2008 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 Copyright © 2008 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...

  • Page 24: Block Diagram

    BLOCK DIAGRAM Copyright © 2008 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...

  • Page 25: 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. - 25 - LGE Internal Use Only Only for training and service purposes...
  • Page 26 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only for training and service purposes Only...

  • Page 27: Replacement Parts List

    Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only for training and service purposes Only...
  • Page 28 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only for training and service purposes Only...
  • Page 29 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only for training and service purposes Only...
  • Page 30 Jun., 2008 P/NO : MFL36550709 Printed in Korea...

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