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LG 27MK60TM Service Manual
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LG 27MK60TM Service Manual

Chassis: lm8ea
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LED LCD MONITOR
SERVICE MANUAL
SERVICE MANUAL
CHASSIS :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL62449361 (1804-REV00)
P/NO :
LM8EA
27MK60TM
CONFIDENTIAL

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Summary of Contents for LG 27MK60TM

  • Page 1 CONFIDENTIAL LED LCD MONITOR SERVICE MANUAL SERVICE MANUAL CHASSIS : LM8EA MODEL : 27MK60TM CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : P/NO : MFL62449361 (1804-REV00)

  • Page 2: Table Of Contents

    BLOCK DIAGRAM ............................- 17 - EXPLODED VIEW ............................- 18 - DISASSEMBLY ..............................- 19 - TROUBLE SHOOTING GUIDE ........................- 22 - - 2 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 3: Safety Precautions

    1 MΩ and 5.2 MΩ. *Base on Adjustment standard When the exposed metal has no return path to the chassis the reading must be infinite. - 3 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 4: Specification

    INX BMS Refer to Suffix BLU: EBV61158026/ LM23010075A Applying module list standard Cell: EAJ64589201/ M238HCA-P3B LGD IPS EAJ64450101/LM238WF2-SSK1 27MK600M LGD IPS EAJ62507601/ LM270WF7-SSA1 - 4 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 5 Checked 146.25 1680 x 1050 V(Lines) 59.954 1089 1050 Checked H(Pixels) 67.50 2200 1920 Checked 148.50 1920 x 1080 V(Lines) 1125 1080 Checked - 5 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 6 Factory support mode frequency frequency HDMI (Preset Mode) (KHz) (Hz) 480P 31.5 576P 31.25 720P 37.5 720P 1080P 56.25 1080P 67.5 (Recommend Mode) - 6 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 7 Size (Outline) [mm] 535.0(H)x313.0(V)x12.2(D)mm (Typ.) Surface Treatment Anti-Glare, 3H Operating Mode Transmissive mode, Normally Black Back light Unit White LED Color Gamut NTSC 72% - 7 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 8 6500K : Color Temperature Setting is 6500 K( if it’s not special specification) Another Spec.: Product Specification Standard( LG(55)G1-1034 ) Cosmetic Spec. : LCD Module IIS Spec. - 8 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 9: Adjustment Instruction

    If all Adjustment is completed, the values of 6500K, User Color and 9300K are saved automatically. 3.2 Main PCB Function test - 9 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 10 *INX panel biz need adjusting V-COM by software Definition: adjusting V-Com level thereby show minimum flicker Process: By LG cmd , Check Flicker Level and If Can’t meet Flicker spec, Adjust V-com value through IIC line of panel. If flicker level meet spec, save V-com value at EEPROM.
  • Page 11 * Confirm whether user color is 50. If the value of user color(R/G/B) is 30, do adjust again by 4. Total Assembly line process - 11 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 12 6) Press power button left to show Service Menu. (Select “Menu” in Navigation OSD) ※ When doing Adjustment, Please make circumstance as below. - 12 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 13 Vertical Clock Phase Resolution Picture Reset General Language Depend on the sale region Smart Energy Saving Power LED Automatic Standby Off(EU/EK/PD/EW/MA,4H) OSD Lock - 13 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 14 Restart System 0x45 22MK600M:M215HCAP02 Module Select 0x2F 24MK600M**GESN:M238HCAP3B (Page 0xA6 : 0xF3) 0x09 27MK600:LM270WF7 0x55 24MK600**KNSN:LM238WF2 Model select MK600M (Page 0xA6 : 0xF0) - 14 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 15 FOS Default write : <14mode data> write SyncFlags,HPeriodH, HPeriodL, VtotalH,VtotalL, SrcHTotalH, SrcHTotalL SrcHStartH, SrcHStartL, SrcVStartH,SrcVStartL, HsyncPhase Temporary Data write: Write to particular address of EEPROM. - 15 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 16 6.6.5 EDID Read DDC2B Command.(A0/A1) START A0 START A1 Data1 . . . Data128 A STOP - 128 Byte transfer of EDID Buffer of MICOM - 16 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 17: Block Diagram

    BLOCK DIAGRAM - 17 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 18: 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. - 18 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 19: Disassembly

    2. Use a screw-driver to disassembly the Stand-base screw (1ea) or disassembly the thumb-screw(1ea) with your hands. 5. Disassembly the Stand-body screw. (2ea) - 19 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 20 10. Disassembly the UDM Screw. (all) 7. Disassembly the Jack-screw. (1ea) 11. Disassembly the Middle-cabinet. 8. Use a jig to disassembly the Back cover. - 20 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 21 12. Disassembly the DMS Screw. (2ea) 16. Disassembly the Control-PCB and Cable. 13. Disassembly the DMS. 14. Disassembly the PCB-screw. (2ea) 15. Disassembly the PCB. - 21 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 22: Trouble Shooting Guide

    Check IC203 Check Panel Clock Repair Main B/D P101(#10,11,22,23) Check FFC Cable for Damage Replace Cable or Open Conductors Replace T-Con Board or Module - 22 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 23 Damage or Open Connector Check HDMI Replace Connector pin(JP102,103,104,105,106) for proper connection or Damage Re Download EDID Data Check I2C Signal(JP105,106) Replace Main Scaler (IC201) - 23 - Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes...

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