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LG 34UC80-BF Service Manual
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LG 34UC80-BF Service Manual

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LED MONITOR
SERVICE MANUAL
SERVICE MANUAL
CHASSIS :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL70211501 (1708-REV00)
P/NO :
Copyright © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
LM55E
34UC80
CONFIDENTIAL
34UC80-BF

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Summary of Contents for LG 34UC80-BF

  • Page 1 SERVICE MANUAL CHASSIS : LM55E MODEL : 34UC80 34UC80-BF CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : P/NO : MFL70211501 (1708-REV00) Copyright © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 2: Table Of Contents

    ....DISASSEMBLY ..................12 TROUBLE SHOOTING GUIDE .............. 14 - 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

    3440×1440 @ 60 Hz DP/TBT Recommend 3440×1440 @ 60 Hz Input Voltage Input Voltage Voltage :100 - 240 Vac, 50 or 60 Hz, 1.5 A - 4 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 5 3440 3440x1440 HDMI V(Lines) 49.99 1474 1440 H(Pixels) 319.75 88.82 3600 3440 3440x1440 HDMI V(Lines) 59.97 1481 1440 * (1), (2) : Preferred timing. - 5 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 6: Adjustment Instruction

    DP : 4 Serial Number Week / Year Model Name LG ULTRAWIDE Check Sum 10 Color Depth 8bit / 10bit A5 / B5 (0x14h) - 6 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 7 8~10 min 0.317 0.337 10~25 min 0.316 0.334 25~40 min 0.314 0.332 40 min~ 0.313 0.329 Save Warm(6500K) Color by commanding COLOR SAVE Command code. - 7 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 8 Not 00h(Reserved by Buffer To EEPROM) # Until ACK BIT goes LOW, Repeat it. ADL : E2PROM Sub Address(00~FF) Data : Write data Delay : 20ms - 8 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 9 4-Page 80~FF Read 5-Page 0~7F Read 5-Page 80~FF Read 6-Page 0~7F Read 6-Page 80~FF Read 7-Page 0~7F Read 7-Page 80~FF Read 5.6.3. Use Read E 2 - 9 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 10: Block Diagram

    BLOCK DIAGRAM - 10 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 11: E X P L O D E Dv

    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 12: Disassembly

    1.2. Tool (Curved Packing in a box) 2. Stand Assembly Separation 1) Put a product on a curved packing 2) Pull a button and disassemble a stand - 12 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 13 Tapes 3) Disassemble Control PCB Ass’y (Latch Type) (34UC88/80 model is common structure.) 4) Disassemble screws (10ea) : Module + Cabinet - 13 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 14: Trouble Shooting Guide

    Check IC403 Output Replace IC403 & Voltage Level (1.15V, 1.8) Recheck Check X200 Clock Replace X200 12MHz Replace IC202 Flash Memory - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 Repair Scaler P101(#17,18) Check eDP FFC Cable for Damage Replace eDP Cable or Open Conductors Replace T-Con Board or Module - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 Check JK100(JK101) for proper connection or Replace Connector Damage Re Download EDID Data Check I2C Signal(EDID) Replace Main Scaler - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 Check DP Cable for Damage or Open Connector Check JK102 for proper Replace Connector connection or Damage Replace Main Scaler - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

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