LG OLED55E7 Series Service Manual
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LG OLED55E7 Series Service Manual

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OLED TV
SERVICE MANUAL
MODEL : OLED55E7*
CHASSIS : ED71F
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL70063101 (1711-REV02)
Copyright © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
CONFIDENTIAL
OLED55E7*-Z

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  • Page 1 SERVICE MANUAL CONFIDENTIAL MODEL : OLED55E7* OLED55E7*-Z CHASSIS : ED71F CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL70063101 (1711-REV02) Copyright © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 2 SPECIFICATION ..................6 SOFTWARE UPDATE ................10 BLOCK DIAGRAM .................. 11 EXPLODED VIEW .................. 17 DISASSEMBLY GUIDE ................18 TROUBLE SHOOTING GUIDE ..........APPENDIX - 2 - Copyright © LG Electronics. Inc. All rights reserved. Only for 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 for training and service purposes.

  • Page 4: Servicing Precautions

    - 4 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 5 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top. - 5 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 6: Specification

    HELLASSAT 39.0E, HISPASAT 1CDE 30.0WHOTBIRD 13.0E, INTEL- SAT10&7 68.5E, INTELSAT15 85.2E, INTELSAT1R 50.0W, INTEL- SAT903 33.5W, INTELSAT904 60.0E, NILESAT 7.0W, NSS12 57.0E, THOR 0.8W, TURKSAT 42.0E, YAMAL201 90.0E, OTHER - 6 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 7 SPDIF out USB (3EA) EMF, For SVC (download) JPEG, MP3 Ethernet Connect (1EA) Ethernet Connect STP cable PCMCIA Card slot (1EA) PCMCIA slot - 7 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 8: Dtv Mode

    When HDMI1,2,3 3840*2160 134.865 59.94 593.407 UDTV 2160P UHD DEEP COLOUR ON When HDMI1,2,3 3840*2160 135.00 60.00 594.00 UDTV 2160P UHD DEEP COLOUR ON - 8 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 9 56.25 25.00 297.00 UDTV 2160P 3840*2160 67.5 30.00 297.00 UDTV 2160P 4096*2160 53.95 23.97 296.703 UDTV 2160P 4096*2160 54.00 24.00 297.00 UDTV 2160P - 9 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 10: Software Update

    (7) Click [Yes] : TV will be DC OFF -> ON (8) After TV turned on, Check the updated SW Version and Tool Option. - 10 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 11: Block Diagram

    BLOCK DIAGRAM 1. SOC - 11 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 12 2. Tuner + CI - 12 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 13: Video & Audio In/Out

    3. Video & Audio IN/OUT - 13 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 14 4. HDMI 2.0 - 14 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 15 5. USB / Wi-Fi / M-Remote / UART - 15 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 16 6. I2C Map - 16 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 17: Exploded View

    Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. 200T - 17 - Copyright © LG Electronics. Inc. All rights reserved. 120L 120R Only for training and service purposes.

  • Page 18: Disassembly Guide

    ) and pull in the direction of arrow( (3) Separate the stand 2. Disassemble Power Cord Bracket FAB30016103 (M4*12mm, Black) 4EA FAB30016101 (M4*8mm, Black) 1EA - 18 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 19 4. Disassemble Speaker Box Assy (1) Remove the screws (10EA) (2) Separate the speaker box assy FAB30016103 (M4*12mm, Black) 4EA - 19 - FAB32418704 (M3*5.5mm, Gray) 6EA Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 20 6. Disassemble IR Bracket & Separate the Cable FAB31639801(M4*10mm, Black) 4EA (1) Separate the cable (2) Remove the screw (1EA) (3) Separate the IR bracket FAB31639801(M4*10mm, Black) 1EA - 20 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 21 (3) Lift the speaker box top after grasp the end side (4) Separate speaker box top after remove the cable through the hole FAB31639801(M4*10mm, Black) 11EA - 21 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 22: Troubleshooting Guide

    TROUBLE SHOOTING GUIDE Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 23 E. Noise Circuit noise, mechanical noise First of all, Check whether there is SVC Bulletin in GSCS System for these model. F. Exterior error Exterior defect Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 24 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board ※Precaution ☞A4 & A2 Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 25 Check various voltages Check and of Power Board (Main) No Video/ replace No audio MAIN B/D ☞A9 Replace Power Board and repair parts Normal (20V, 12V…) voltage? Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 26 1. Reconnection 2. Install Booster S/W Upgrade Contact with signal distributor Normal or broadcaster (Cable or Air) Picture? Normal Picture? Replace Main B/D Close Close Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 27 External device External Input /Cable error normal Check external device and Replace Main B/D cable Request repair for external device/cable External device HDMI /Cable error normal Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 28 Main B/D / (Check normal operation of Module External Input, Component, RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Screen HDMI/ normal? Normal Copyright © 2017 LG Electronics. Inc. All rights reserved. screen? Only for training and service purposes.
  • Page 29 Replace Main B/D ☞A9 Measure voltage of each output of Power B/D Normal? Replace Power B/D Normal voltage? Replace Power Close Normal Check ST-BY (7.8V) voltage? ☞A9 Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 30: Power Error

    Replace Power B/D ☞A9 Check and fix exterior of Power B/D Part (If Power Off mode is not displayed) Normal Check Power B/D voltage? voltage Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 31 Reboot by SW down load function No meaning (same as initial value) UNKNOWN COMP_END OLED threshold voltage degradation(Compensation) completes. PNWASHDONE Power off by panel noise wash function complited. (OLED) Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 32 ☞A12+A9 Check user Check audio B+ Normal menu > 20V of Power voltage Speaker off Board Check Replace MAIN Board Speaker disconnection connecting Speaker Disconnection Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 33 (In case of Connect and check Normal External Input other external audio? signal error) device Check and fix external device Check and fix external device Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 34: Function Error

    Replace Main B/D (Power B/D don’t have problem) If R/C operate, Normal Close operating? Explain the customer cause is interference from light in room. Replace R/C Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 35 Replace MR15RA Close Down load the Firmware •If you conduct the loop at 3times, * INSTART MENU12.RF Remocon Test Receiver change the MR15RA. Firmware download Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 36 INSTART menu Voltage? 1pin Main B/D ☞A14 Check & Repair Close Wifi cable connection ☞A4 Wi-Fi Mac value Close is “NG”? Change the Wifi assy Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 37 Recognition error - S/W Version Check and fix HDMI/ Replace Main B/D external device/cable DVI, Optical Fix in Recognition error accordance with technical information Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 38 (For models without any fix information, provide the description) ※ If there is a “Tak Tak” noise from the in “Part related to nose” in the Owner’s Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 39 Revised date Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote control Replace remote control damage Stand Replace stand dent Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 40 Exchange Main Board (2) A-4/6 Defected Type caused by Cable/ Main / Power / Module Exchange Main Board (3) A-5/6 Exchange Power Board (PSU) A-6/6 Exchange Module A-7/7 Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 41 E. Etc Check items after Main B/D replacement E. Etc Adjustment Test pattern How to use JIG E. Etc (Power B/D Diganostic Smart Jig Multi Gender) Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 42 Revised Content Check Vx1 lock date Copyright © 2017 LG Electronics. Inc. All rights reserved. Only for training and service purposes. Check a voltage of R7624 after turn on the TV. If the voltage is low, Vx1 is locked.(OK)

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