LG UltraFine 22MD4KB Service Manual
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LG UltraFine 22MD4KB Service Manual

LG UltraFine 22MD4KB Service Manual

4k monitor
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UltraFine 4K MONITOR
SERVICE MANUAL
CHASSIS :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO :
MFL68920197 (1803-REV01)
Copyright © 2016 - 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.
LM6FA
22MD4KA(22MD4KB)
CONFIDENTIAL
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Summary of Contents for LG UltraFine 22MD4KB

  • Page 1 SERVICE MANUAL CHASSIS : LM6FA MODEL : 22MD4KA(22MD4KB) CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL68920197 (1803-REV01) Copyright © 2016 - 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 2: Table Of Contents

    TROUBLE SHOOTING GUIDE ..............6 BLOCK DIAGRAM ................... 9 EXPLODED VIEW .................. 10 DISASSEMBLY ..................11 CHECK GUIDE ................ APPENDIX TRAINING MANUAL ..............APPENDIX - 2 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 3: Safety Precautions

    When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 4: Specification

    Length :1.8M, Shape : USB-C , Color: Black, Pin 24 Luxshare P/No. : EAD63932601 Power Input: AC100~240V 50~60Hz, 2.5A Max Yuyang Output: DC 20V 7.5A, 150W PSU - 4 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 5 3900 3840 3840x2160 V(Lines) 2191 2160 H(Pixels) 401.24 116.64 3440 3360 3360x1890 V(Lines) 1944 1890 H(Pixels) 133.32 66.66 2000 1920 1920x1080 V(Lines) 1111 1080 - 5 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 6: Trouble Shooting Guide

    R e place IC904 & Voltage Level (1.1V) R e check Ch eck X500 Clock R e place X500 14.318MHz R e place IC501 Flash M e mory - 6 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 7 P 501(#17,18) Ch eck FFC Ca ble for Damage or R e place Cable Open Conductors R e place T -Con Board or M odule - 7 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 8 Is it s upported? Check DP Cable for Damage or Open Connector Check JK101 for proper Replace Connector connection or Damage Replace Main Scaler (IC500) - 8 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 9: Block Diagram

    BLOCK DIAGRAM - 9 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 10: Exploded View

    It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 11: Disassembly

    Groove of lever inside of Cabinet. *Caution : Handle with care from scratch. *Caution : Handle with care from scratch. - 11 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 12 LCM. the cabinet, case top of LCM can be deformation. So, Latch of cabinet and LCM should be released before detach each other. Screw - 12 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 13: Check Guide

    CHECK GUIDE Copyright ⓒ 2016 - 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 14 USB-C to C Cable USB-A to C Cable P/N : EAD63932601 (USB C to C Cable) P/N : EAD63809902 (USB A to C Cable) 1. Execute “WIN_Service_App.exe” Copyright ⓒ 2016 - 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 15 2. Connection to monitor 1. Click Initialize If Initialize succeed, you can see above pop-up. Copyright ⓒ 2016 - 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 16 5. The pattern what you configured will be shown in monitor screen. Once you complete to check the screen by using Aging mode, please click [Factory Reset] to reset the monitor. Copyright ⓒ 2016 - 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 17 ① Path: Start  Control Panel  Sound Click ② Before Check speaker, change the playback device as below. LG Monitor Audio ③ Play MP3 player and check sound and speaker Copyright ⓒ 2016 - 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 18 ① Path: Computer  Property Device Manager ② Check the below 3 items USB Audio ALS (Ambient Light Sensor) USB Hub Device Unknown USB device is no problem Copyright ⓒ 2016 - 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 19: Training Manual

    TRAINING MANUAL Copyright ⓒ 2016 - 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 20 ▶ Update the FW by LG Screen Manager • LG Screen Manager is an application that provides ScreenSplit and monitor software update features. • You can download and install the latest version from the LGE website (www.lg.com). - [LG Screen Manager] 1. Select the ‘Monitor Update’ menu 2.
  • Page 21 Main Board Check Guide After Repair P/N : EAD63932601 P/N : EAD63809902 (USB C to C Cable) (USB A to C Cable) Copyright ⓒ 2016 - 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.

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