LG 42LG5500 Service Manual
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LG 42LG5500 Service Manual

LG 42LG5500 Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LD82D
MODEL : 42LG5500
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Internal Use Only
website:http://biz.LGservice.com
42LG5500-ZB

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Summary of Contents for LG 42LG5500

  • Page 1 Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LD82D MODEL : 42LG5500 42LG5500-ZB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............10 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................20 EXPLODED VIEW .................. 22 SVC. SHEET ....................Copyright © 2008 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    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: Servicing Precautions

    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

    Storage Environment Temperature -20 ~60 Altitude - 0 to 4000feet Humidity 10 ~ 90 Back Light 18 EEFL Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 HDMI ver 1.3, (Simplink HDMI1/2 Only) Audio Input(3EA) RGB/DVI Audio, Component, AV L/R Input SPDIF out(1EA) SPDIF out Copyright © 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 63.595 60.00 108.875 SXGA (37/42LG5500 ONLY) 1400x1050 65.150 60.00 122.50 SXGA (37/42LG5500 ONLY) 1920x1080 66.647 59.988 138.625 WUXGA Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 65.160 60.0 122.50 SXGA (37/42LG5500 ONLY) 1600x1200 74.077 60.0 130.375 UXGA (37/42LG5500 ONLY) 1920x1080 66.647 59.988 138.625 WUXGA Copyright © 2008 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Application Range

    This spec. sheet is applied to all of the LD82D chassis * Press EXIT Key to delete Installation Guide before PCB manufactured at LG TV Plant all over the world. assembly adjustment. And then press FRONT-AV Key on Adjustment remote controller.
  • Page 11 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F HDMI3 67030C003000B82D 0x00 00 0x01 0x02 11 0x03 D1 C0 0x04 35 0x05 58 0x06 4B 0x07 Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...

  • Page 12: Adc Calibration

    (Vol.+) key operate To set , then it becomes automatically. 5) On bottom side of OSD, “RGB OK” means the adjustment is completed. Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...

  • Page 13: Auto White Balance

    4) Set test-pattern on and display inside pattern. Control is carried out on three color temperature, COOL, MEDIUM, WARM. (Control is carried out three times,) Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only...

  • Page 14: Power Board

    9. Check the Power Manufacture’s model Module output circuit. Module output circuit. Board Output high passage tension circuit. Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 After removing the cables, connect them to the Power Board(except the SC101 connection cable), and change the AC voltage marking to manual. When ST-BY 5V does not operate, replace the Power Board. Copyright © 2008 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only...

  • Page 16: Protect Mode

    After a COF crisis for each board, check the normal operation. For normal operation, normal ? corresponding COF failure means the module should be relaced. Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only...
  • Page 17 IC(IC700) operate? Replace the FIL8548 IC(IC700) Is the Ctrl Board of Replace the Ctrl B/D. Module normal? Copyright © 2008 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 (6) In case of an unusual display in SCART1 mode Is the Video input of the Check the input source. A/V Jack(J1200) normal? Same as Block A. Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Is the IC1301 for specific input? refer to circuit diagram operating normally? (NTP300A) (except HDMI,DTV,RF) Replace the VSC B/D. Copyright © 2008 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...

  • Page 20: Block Diagram

    BLOCK DIAGRAM Copyright © 2008 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 MEMO Copyright © 2008 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...

  • Page 22: 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. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 VITIAZ 2 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 VITIAZ 3 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 Jan., 2008 P/NO : MFL40944501 Printed in Korea...

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