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LG 55LE7500 Service Manual

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LED LCD TV
SERVICE MANUAL
CHASSIS : LD03E
MODEL: 55LE7500/750N
MODEL:
MODEL:
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL62863017 (1005-REV00)
55LE7800/7900
55LE7510/7910
P
OK
MENU
INPUT
North/Latin America
Europe/Africa
Asia/Oceania
55LE7500/750N-ZA
55LE7800/7900-ZA
55LE7510/7910-ZB
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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Summary of Contents for LG 55LE7500

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED LCD TV SERVICE MANUAL CHASSIS : LD03E MODEL: 55LE7500/750N 55LE7500/750N-ZA MODEL: 55LE7800/7900 55LE7800/7900-ZA MODEL: 55LE7510/7910 55LE7510/7910-ZB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MENU...

  • Page 2: Table Of Contents

    PRODUCT SAFETY ..................3 SPECIFICATION ..................4 ADJUSTMENT INSTRUCTION ..............7 BLOCK DIAGRAM...................14 EXPLODED VIEW .................. 15 SCHEMATIC CIRCUIT DIAGRAM .............. Copyright © 2010 LG Electronics. Inc. All rights 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 © 2010 LG Electronics. Inc. All rights reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Specification

    Without inverter Pixel Pitch 0.63 (H) x 0.63 (V) Back Light LED(EDGE), LGE(IOP) Display Colors 1.06 B(true) colors Coating Copyright © 2010 LG Electronics. Inc. All rights reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 1920x1080 33.75 60.00 HDTV 1080i 1920x1080 33.72 59.94 HDTV 1080i 1920x1080 56.250 HDTV 1080p 1920x1080 67.5 HDTV 1080p Copyright © 2010 LG Electronics. Inc. All rights reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 6 59.8 84.75 WXGA HDCP 1280*1024 63.595 60.0 108.875 SXGA HDCP/FHD model 1920*1080 67.5 60.00 138.625 WUXGA HDCP/FHD model Copyright © 2010 LG Electronics. Inc. All rights reserved. - 6 - LGE Internal Use Only Only for training and service purposes...

  • Page 7: Adjustment Instruction

    RS-232C Po rt - Pattern level : 0.7±0.1 Vp-p - Image Connect: PCBA Jig-> RS-232C Port== PC-> RS-232C Port Copyright © 2010 LG Electronics. Inc. All rights reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 Po w e r I n p u t Power Input Po w e r Blo ck Liquid Crys tal Row Li ne Copyright © 2010 LG Electronics. Inc. All rights reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 Check the model name Instart menu ‡ Factory name displayed (ex 42LE7500-ZA) e. Check the Diagnostics (DTV country only) ‡ Buyer model displayed (ex 42LE7500-ZA) Copyright © 2010 LG Electronics. Inc. All rights reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 Input mode. 6) If ADC calibration is failure, after recheck ADC pattern or condition retry calibration Error message refer to 5). Copyright © 2010 LG Electronics. Inc. All rights reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 RS -232C Pat t ern Generat o r Signal Source * If TV internal pattern is used, not needed Copyright © 2010 LG Electronics. Inc. All rights reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 Color Coordination Temp ∆UV COOL 0.269 0.273 13000K 0.0000 MEDIUM 0.285 0.293 9300K 0.0000 WARM 0.313 0.329 6500K 0.0000 Copyright © 2010 LG Electronics. Inc. All rights reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 1. Push "IN-START" key in service remote control. 2. Select "Tool Option 1" and Push “OK” button. 3. Punch in the number. (Each model has their number.) Copyright © 2010 LG Electronics. Inc. All rights reserved. - 13 - LGE Internal Use Only...

  • Page 14: Block Diagram

    BLOCK DIAGRAM Copyright © 2010 LG Electronics. Inc. All rights reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All rights reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. BCM3556 & NAND FLASH Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 17 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. BCM3556 AUD_IN/LVDS Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 18 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. BCM3556 VIDEO IN Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 19 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR HONG YEON HYUK THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. DDR Memory Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 20 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. ETC SUB BOARD I/F Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. ( Full Nim ) Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 22 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. ETC SUB BOARD I/F Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 24 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. luetooth Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 25 EUROBBTV 2009.06.18 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 26 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR URSA3 120Hz MINI_LVDS THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 27 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 3 120Hz LVDS Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 28 BCM (EUROBBTV) ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. POWER Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 29 GP2_Saturn7M ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 30 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 31 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR LEE GI YOUNG THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 32 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. ETC SUB BOARD I/F Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 33 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SIDE_AV Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 34 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. IRELESS Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 35 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR KIM JONG HYUN THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. NTP7000 Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 36 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR URSA3 DDR & Power THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 37 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. URSA3 (NO L.D.) Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 38 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. T-Con (NO L.D.) Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 39 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. T-Con Power Option Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...

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