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LG 24BK550Y Service Manual
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LG 24BK550Y Service Manual

Chassis lm6ja
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LED MONITOR
SERVICE MANUAL
SERVICE MANUAL
CHASSIS :
LM6JA
MODEL :
24BK550Y
27BK550Y
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Internal Use Only

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Summary of Contents for LG 24BK550Y

  • Page 1 Internal Use Only LED MONITOR SERVICE MANUAL SERVICE MANUAL CHASSIS : LM6JA MODEL : 24BK550Y 27BK550Y CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    Firmware Upgrade Method ............... 8 BLOCK DIAGRAM ................. 14 EXPLODED VIEW .................. 15 DISASSEMBLY ..................16 TROUBLE SHOOTING GUIDE .............. 19 - 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: Specification

    : 24Pin DVI Length : 1.8m Refer to Suffix Audio Color: Black standard Pin:2P Power Input: AC100~240V 50~60Hz,1.5A Max Built-in PSU - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 [LGE Approval] Applying module list CAS LM 238WF1-S EAJ63948301 MV270FHM-N20, FHD M V270FHM -N20 Product Specificat Speaker P/N: EAB51749310 Typ:1.2W*1.2W - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 6 H(Pixels) 67.50 2200 1920 148.50 1920 x 1080 V(Lines) 1125 1080 D-SUB/DVI DTV Mode is not supported (interlace mode) - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 HDMI (Preset Mode) (KHz) (Hz) 480P 31.5 576P 31.25 720P 37.5 720P 1080P 56.25 1080P 67.5 (Recommend Mode) - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 8: Firmware Upgrade Method

    Step1. Connect Realtek Jig to the monitor and PC. Connect to Monitor Connect to PC Step2. Install like as attached file. Realtek Driver Install Guide Copyright © 2012 LG Electronics Inc. All rights reserved. Only for training and service purposes...
  • Page 9 How to download monitor Firmware Step3. Run “RTDToll” Step4. [ISP] Icon Click Copyright © 2012 LG Electronics Inc. All rights reserved. Only for training and service purposes...
  • Page 10 How to download monitor Firmware Step5. Check “Access method”. LG Monitor JIG(P/N RAD33028001) [LG Monitor JIG: FTDIUsb] Copyright © 2012 LG Electronics Inc. All rights reserved. Only for training and service purposes...
  • Page 11 How to download monitor Firmware Step6. Option Check Enter [ Communication Option ] menu and then uncheck the [ Check ACK] Set User data(FE2P) area select option Copyright © 2012 LG Electronics Inc. All rights reserved. Only for training and service purposes...
  • Page 12 1 Check the Bank 0 checkbox 2 Click [ … ] button 3 select the SW update file( *.bin or *. hex) and then click [ open ] button. Copyright © 2012 LG Electronics Inc. All rights reserved. Only for training and service purposes...
  • Page 13 Click Thunder icon button you see the progress bar and the status window. after finishing SW update, you see the [success] message on status window. Copyright © 2012 LG Electronics Inc. All rights reserved. Only for training and service purposes...

  • Page 14: Block Diagram

    BLOCK DIAGRAM - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 15: Exploded View

    Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 16: Disassembly

    Fig.2 Disassemble the screw , (Remove the 4 Screws.) Fig 3 Disassemble the Back cover by using jig or hand - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 Fig 4 Remove the FFC, Lamp, control wafer <27BK550> <24BK550> <27BK550> <24BK550> Fig 5 Disassemble the Chassis assy - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 Fig 6 Disassemble the LCD module Fig 7 Remove the Control PCB for using knife - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 19: Troubleshooting Guide

    Check IC801 Output Replace IC801 & Voltage Level (1.1V, Recheck 3.3V) Check X100 Clock Replace X100 14.318MHz Replace IC101 Flash Memory Copyright © 2010 LG Electronics. Inc. All right reserved. -19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 Repair Main B/D P101(#10,11,22,23) Check FFC Cable for Damage or Replace Cable Open Conductors Replace T-Con Board or Module Copyright © 2010 LG Electronics. Inc. All right reserved. -20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 0 for proper Replace Connector connection or Damage Check I2C Re Download EDID Signal(JK200,201,2 Data 02,P200 Replace Main Scaler (IC100) Copyright © 2010 LG Electronics. Inc. All right reserved. -21 - LGE Internal Use Only Only for training and service purposes...

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