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LG 42LB9RTA Service Manual
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LG 42LB9RTA Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LP7BB
MODEL : 42LB9RTA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Internal Use Only
website:http://biz.LGservice.com
42LB9RTA-MB

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Summary of Contents for LG 42LB9RTA

  • Page 1 Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LP7BB MODEL : 42LB9RTA 42LB9RTA-MB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    SAFETY PRECAUTIONS ................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............10 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................25 EXPLODED VIEW .................. 26 SVC. SHEET ....................Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 2 - Only for training and service purposes...

  • Page 3: Safety Precautions

    Udskiftning má kun ske med batteri at samme fabrikat og type. Levér det brugte batteri tilbage til leverandoren Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 3 - 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©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 4 -...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 5 - Only for training and service purposes...

  • Page 6: Specification

    PC Audio, Component (2EA), AV(2EA) L/R Input Audio variable out (1EA) USB Input (1EA) DivX, MP3, JPEG AV out (1EA) Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 6 - Only for training and service purposes...
  • Page 7 0.279/0.279/0.279 +0.03 coordinate 0.292/0.292/0.292 0.635/0.636/0.635 0.339/0.343/0.344 Green 0.282/0.284/0.286 0.606/0.615/0.614 Blue 0.145/0.144/0.146 0.064/0.063/0.061 Contrast ratio 32" LPL(0-RT) 1000 42" LPL(0-RT) Luminance Variation Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 7 - Only for training and service purposes...
  • Page 8 1024*768 60.023 75.02 78.75 VESA(XGA) 1280*768 47.776 59.87 79.50 WXGA(42XGA,50",60") 1360*768 47.712 60.01 85.50 WXGA(42XGA,50",60") 1366*768 47.700 60.00 84.62 WXGA(42XGA,50",60") Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 8 - Only for training and service purposes...
  • Page 9 HDTV 1080I 1920*1080 28.125 50.00 74.250 HDTV 1080I 50Hz 1920*1080 67.5 60.00 148.5 HDTV 1080P 1920*1080 56.25 148.5 HDTV 1080P 50Hz Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 9 - Only for training and service purposes...

  • Page 10: Adjustment Instruction

    1. Application Range 5. HDD Assembly Adjustment method This spec. sheet is applied to all of the LP7BB chassis (Saturn Analog DVR) manufactured at LG TV Plant all over 5.1. HDD FORMAT the world. 1) Assemble MAIN , DVR Board.
  • Page 11 White Balance Adjustment. - After AV color balance adjustment, Change the mode from AV to RF. (Cancel Heat-run mode.) Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes...
  • Page 12 (Vol. +) key to operate the set, then it becomes automatically becomes automatically 5) Auto-RGB OK means adjustment is completed 5) Auto-RGB OK means the adjustment is completed Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 12 - Only for training and service purposes...
  • Page 13 Module and Filter. Therefore Refer to the below Color Coordinates Target. But, in case of WCG module, use the CH12 of CA-210. Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 13 -...

  • Page 14: Trouble Shooting

    Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 14 - Only for training and service purposes...
  • Page 15 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 15 - Only for training and service purposes...
  • Page 16 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 16 - Only for training and service purposes...
  • Page 17 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 17 - Only for training and service purposes...
  • Page 18 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 18 - Only for training and service purposes...
  • Page 19 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 19 - Only for training and service purposes...
  • Page 20 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 20 - Only for training and service purposes...
  • Page 21 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 21 - Only for training and service purposes...
  • Page 22 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 22 - Only for training and service purposes...
  • Page 23 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 23 - Only for training and service purposes...
  • Page 24 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 24 - Only for training and service purposes...

  • Page 25: Block Diagram

    Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 - Only for training and service purposes...

  • Page 26: Exploded View

    EXPLODED VIEW Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 26 - Only for training and service purposes...
  • Page 27 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 Dec., 2007 P/NO : MFL39265910 Printed in Korea...

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