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LG 55LX570H-U Service Manual
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LG 55LX570H-U Service Manual

LG 55LX570H-U Service Manual

Chassis: la5cj
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LED TV
SERVICE MANUAL
CHASSIS : LA5CJ
MODEL : 55LX570H
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL69175105 (1612-REV01)
Internal Use Only
55LX570H-U*

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Summary of Contents for LG 55LX570H-U

  • Page 1 Internal Use Only LED TV SERVICE MANUAL CHASSIS : LA5CJ MODEL : 55LX570H 55LX570H-U* CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL69175105 (1612-REV01)

  • Page 2: Table Of Contents

    SPECIFICATION ..................6 USB DOWNLOAD ................... 8 TROUBLE SHOOTING GUIDE ..............9 BLOCK DIAGRAM ................. 17 EXPLODED VIEW .................. 18 - 2 - Copyright © LG Electronics. Inc. All rights reserved. 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. - 3 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top. - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    2) Humidity : ~ 80 % 1) Temp. : -20 ~ 60 deg Storage Environment 2) Humidity : ~ 85% - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 1360*768 47.712 60.015 85.50 VESA (WXGA) Х 1600*1200 75.00 60.00 162.0 VESA (UXGA) 1920*1080 67.50 60.00 148.5 HDTV 1080P - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 8: Usb Download

    (2) Select "Tool Option 1" and push "OK" key. (3) Punch in the number. (Each model has their number) - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 9: Trouble Shooting Guide

    Check Q405 application circuit or Check Q405 output Voltage(12V) replace Q405 Replace Cable Check LVDS Cable Check LCD Module Control board - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 Replace L3001 Replace IC3000 or IC3000 Check tuner 1.8V power L3003 Replace Mstar(IC101) Check Mstar LVDS output or main board - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 Check tuner application circuit or Check IF Signal replace tuner. TU3001 #10, 11 Pin Check X201 Replace X201 and application circuit Replace IC101 - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 After checking thoroughly all path once again, Can you see the normal waveform? You should decide to replace Mstar or not. - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13 This board has big problem because Main chip (Mstar) have some troubles. After checking thoroughly all path once again, You should decide to replace Mstar or not. - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 After checking audio signal line, you should decide to replace item or not. check. Can you see the normal waveform? - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 This board has big problem because Main chip (Mstar) have some troubles. After checking thoroughly all path once again, You should decide to replace Mstar or not. - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 After checking audio signal line, you should decide to replace item or not. Can you see the normal waveform? Check the connector & Speaker - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Block Diagram

    BLOCK DIAGRAM - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 18: Exploded View

    Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

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