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LG 32LG350H Service Manual
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LG 32LG350H Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LD85F
MODEL : 32LG350H
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL39166115 (0906-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
32LG350H-TA
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 32LG350H

  • 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 : LD85F MODEL : 32LG350H 32LG350H-TA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL39166115 (0906-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION ..............9 TROUBLE SHOOTING ................14 BLOCK DIAGRAM.................. 24 EXPLODED VIEW .................. 25 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 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 © 2009 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 © 2009 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    With Inverter Pixel Pitch 0.36375 mm(D) Back Light 14 EEFL Display Colors 1.06 Billion(FHD LGD) Coating 3H, AG Copyright © 2009 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 59.948 101.00 WSXGA 1680*1050 62.290 59.94 147.00 WSXGA 1280*1024 63.595 60.0 108.875 SXGA 1920*1080 66.647 59.988 138.625 WUXGA Copyright © 2009 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 1680*1050 62.290 59.954 147.00 WSXGA HDCP 1280*1024 63.595 60.00 108.875 SXGA HDCP 1920*1080 66.647 59.988 138.625 WUXGA HDCP Copyright © 2009 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...

  • Page 9: Adjustment Instruction

    - If your downloaded program version in USB Stick is Low, it didn’t work. But your downloaded version is High, USB data is automatically detecting. filexxx.bin Copyright © 2009 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 3) Go to “INCH” and choice proper inch. 4) TV power turn off and on. 5) Completed Tool option Copyright © 2009 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 4) Enter the IN-START mode, and select “RJP Pin Check”. 5) The check result is displayed after 1~2 seconds. 1080i Mode Copyright © 2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 - Check whether written EDID data is correct or not. C. Year : Controlled * DDC EDID Write is available only ‘Power Only’ Mode. Copyright © 2009 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only...
  • Page 13 Confirm whether is normal or not when between power board's ac block and GND is impacted on 1.5kV(dc) or 2.2kV(dc) for one second Copyright © 2009 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Trouble Shooting

    After all cables connect is removed to PSU, the AC voltage marking is authorized on manual. When ST-BY 5V is not operated, replace PSU. Copyright © 2009 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only...
  • Page 15 Check the Tuner. Check the Power. Is the LVDS cable Cable inserts well. connected well? Change the IC(IC100). BLOCK A Copyright © 2009 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 Is video input of the Component Jack Check the input source. normal?(Check R733, 734,735) Same as Block A. Copyright © 2009 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 Check the IC902. (IC902) Is waveform of Switching IC normal? Check the IC902. (Check IC902) Same as Block A. Copyright © 2009 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 Replace IC100. Check the Tuner in/Out. normally? is no sound? IC1000 operate Replace IC1000. normally? Replace main board. Copyright © 2009 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Re-solder or replace the IC2001. normally? Check the external Replace the external speaker speaker Check the speaker wire. Copyright © 2009 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 L403. Check the IR waveform Re-solder or replace the defect part. of IC1304_Pin3. Check the RS-232C Pin4. Copyright © 2009 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 Re-solder or replace the defect part. output of IC1303 Replace the LED clock. Check the LED clock. Check the Clock ass’y. Copyright © 2009 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 Re-solder or replace the defect part. output of IC1303 Replace the LED clock. Check the LED clock. Check the Clock ass’y. Copyright © 2009 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 Check input & Re-solder or replace the defect part. output of IC1300 Check the Buzzer(BU1300) & Replace the Buzzer. Copyright © 2009 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...

  • Page 24: Block Diagram

    BLOCK DIAGRAM TS_Serial Sid e_V/ L/ R TV Tuner TV Tuner Copyright © 2009 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 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR MAIN_1 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 27 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR MAIN_2 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. D2379AQ Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 28 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 ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 29 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR Module&Ctl THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. UEL&CTL Copyright ©2009 LG Electronics. Inc. All right 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 Tuner THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. UNER Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 31 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR SCART THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCART Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 32 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR I n t e r f a c e THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ©2009 LG Electronics. Inc. All right 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 Audio_OUT THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. CMCIA Copyright ©2009 LG Electronics. Inc. All right 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 HDMI THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 35 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR AUDIO THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 36 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR Power THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. OWER Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 37 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR EXT-Power THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 38 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR Commercial THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

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32lg350h-ta