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LG 34UC88 Service Manual

LG 34UC88 Service Manual

Chassis: lm55e
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LED MONITOR
SERVICE MANUAL
CHASSIS :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO :
MFL68920174 (1601-REV01)
LM55E
34UC88
34CB88
34UC88-BF
34CB88-PF
Internal Use Only

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Summary of Contents for LG 34UC88

  • Page 1 Internal Use Only LED MONITOR SERVICE MANUAL CHASSIS : LM55E MODEL : 34UC88 34UC88-BF 34CB88 34CB88-PF CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL68920174 (1601-REV01)
  • Page 2: Table Of Contents

    SPECIFICATION ..................4 ADJUSTMENT INSTRUCTION ............... 7 TROUBLE SHOOTING GUIDE .............. 11 BLOCK DIAGRAM ................. 15 EXPLODED VIEW .................. 16 - 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

    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. LGE Internal Use Only Only for training and service purposes...
  • Page 5 3600 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 - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 6 (Preset Mode) (KHz) (Hz) 640x480P 31.47 720x480P 31.47 1280x720P 1920x1080P 67.5 1280x720P 37.5 1920x1080P 56.25 2560x1080P 56.25 2560x1080P 720x576P 31.25 - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7: Adjustment Instruction

    Week / Year Model Name LG ULTRAWIDE Check Sum 10 Color Depth 8bit / 10bit A5 / B5 (0x14h) - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 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. - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 # Until ACK BIT goes LOW, Repeat it. ADL : E2PROM Sub Address(00~FF) Data : Write data Delay : 20ms - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 7-Page 0~7F Read 7-Page 80~FF Read 5.6.3. Use Read E 2 PROM’s specific area as unit of 128(80h)-byte. (84h) - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11: 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 - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 Repair Scaler P101(#17,18) Check eDP FFC Cable for Damage Replace eDP Cable or Open Conductors Replace T-Con Board or Module - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13 Check JK100(JK101) for proper connection or Replace Connector Damage Re Download EDID Data Check I2C Signal(EDID) Replace Main Scaler - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 Check DP Cable for Damage or Open Connector Check JK102 for proper Replace Connector connection or Damage Replace Main Scaler - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15: Block Diagram

    BLOCK DIAGRAM - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16: Exploded View

    Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

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