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LG 22LK311C Service Manual
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LG 22LK311C Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LP91H
MODEL : 22LK311C
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL63285206 (1108-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
22LK311C-MA
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 22LK311C

  • 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 : LP91H MODEL : 22LK311C 22LK311C-MA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL63285206 (1108-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION ..............7 TROUBLE SHOOTING ................12 BLOCK DIAGRAM.................. 15 EXPLODED VIEW .................. 16 SVC. SHEET ....................Copyright © 2010 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
  • Page 3 An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright © 2010 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Specification

    L/R Input (22LK310/311: AV Audio Input 1EA) 10. RS-232C Remote control, Commercial control Rear 11. USB Input (1EA) Divx, MP3, JPEG Only Side Copyright © 2010 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 1280* 1024 63.668 59.895 109.00 Only FHD Model 1920* 1080 66.587 59.934 138.50 WUXGA(Reduced Blanking) Only FHD Model Copyright © 2010 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 6 148.5 HDTV 1080P 1920 x 1080 24.00 74.25 HDTV 1080P 1920 x 1080 33.75 30.00 74.25 HDTV 1080P Copyright © 2010 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...

  • Page 7: Adjustment Instruction

    1) Connect the download jig to D-sub(RGB) jack. Click “(1)Read” tab, and then load download file - LH20/ LH30 (XXXX.bin) by clicking “Read”. Filexxx.bin Filex Copyright © 2010 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 (2) Equipment : adjustment remote control. Copyright © 2010 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 ENTER( 6) ADC adjustment is executed automatically . 7) When ADC adjustment is finished, this OSD appear Copyright © 2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 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 © 2010 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only...
  • Page 11 - Checking the function of Dimming refer to the picture at below. - Push the button “Tilt” or “Exit” key. Pattern 7 (Combination) Local Dimming Demo screen Copyright © 2010 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...

  • Page 12: Troubleshooting

    Inverter. Pass Check Output of IC802. Change IC802. Fail Pass Check LVDS Cable. Change LVDS cable. Fail Copyright © 2010 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 Change the defect part. Fail Of IC800. Pass Repeat [A], & [B] Process. Repeat [A], & [B] Process. Copyright © 2010 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 Change the defect part. Of IC600. Pass Change Speaker. Check The Speaker. Fail Pass Check The Speaker Wire. Copyright © 2010 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15: Block Diagram

    BLOCK DIAGRAM Copyright © 2010 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...

  • Page 16: 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. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 2009/12/23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. INPUT1 Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 18 2009/12/23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. INPUT2 Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 19 2009/12/23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR 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 20 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LVDS,CTR KEY Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 21 2009/12/23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TUNER Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 22 2009/12/23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. AUDIO Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 23 2009/12/23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MSTAR Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 24 2009/12/23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. DDR2 Copyright © 2010 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 25 LD330/LD420 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...

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