LG OLED88Z1PTA Service Manual

Chassis eb14z / ed14z

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OLED TV

SERVICE MANUAL

CHASSIS : EB14Z / ED14Z

MODEL : OLED88Z1PTA / PVA

CAUTION

BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL71796431 (2103-REV00)

Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),

publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you

have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.

The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service

Manual.

OLED88Z19LA

Table of Contents

Summary of Contents for LG OLED88Z1PTA

Page 1 Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.
Page 2 SPECIFICATION ..................6 SOFTWARE UPDATE ................10 BLOCK DIAGRAM ................. 12 EXPLODED VIEW .................. 13 ASSEMBLY / DISASSEMBLY GUIDE ........APPENDIX TROUBLE SHOOTING GUIDE ..........APPENDIX - 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 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 training and service purposes.
Page 6: Specification
3. Test method (1) Performance: LGE TV test method followed (2) Demanded other specification - Safety : CE, IEC specification - EMC : CE, IEC specification - 6 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 7 Optical Audio out USB Input (3 EA) EMF, For SVC (download) Ethernet Connect STP cable (1EA) PCMCIA Card slot PCMCIA Slot only EU/CIS (1EA) - 7 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 8 107.89 23.98 1188 7680*4320 1188 7680*4320 1188 7680*4320 131.87 29.97 1188 8K Model Only. 7680*4320 1188 7680*4320 2376 7680*4320 263.74 59.94 2376 7680*4320 2376 - 8 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 9 UHD DeepColor is On (UHD, 8K 120Hz models only), 2560*1440 182.99 119.99 497.7 Support only when UHD Deep- Color is On - 9 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 10 (6) After finishing the update, it will show a pop-up below the picture. (7) Click “Yes” : Tv will be turn off and on itself - 10 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 11 “The latest version of the SW is available for your TV. Do you want to update now” (3) [Yes] : update starts. [No] : Close the pop-up, check out later - 11 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 13: 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. - 13 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 14 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. - 14 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 16 When moving the set, do not hold the head part (red dotted line part) by hand, move it by holding the stand (green line part). When moving the set, Handling by more than 4 persons. ※ Refer to the picture below. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 18 Pull the Stand Cable Cover to separate (vertical direction, horizontal direction 1EA each), and disconnect the varieties of cables. (1-3) Unscrew Screw(A) 1EA for DC Cable Fixer, and disconnect the DC Cable. Stand Cable Cover Stand Cable Cover DC Cable Fixer DC Cable Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 19 ※ The Sound Reflector is attached to the stand only by a magnet. Thus, Make sure that the Sound Reflector does not fall off to the floor when it is removed. Sound Reflector Sound Reflector Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 20 (4-1) Lift the Head part and separate it from the Stand. The Shaft is fully released status. (※ The Shaft is not separated from the Stand) Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 21 (5-1) Unscrew the Back Cover Fixation Screw(D) 9EA. (5-2) Separate the Back Cover by lifting the bottom of the Back Cover. (Carefully separate the upper holder joints.) Back Cover inner holder joints Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 23 (6-1) Pull the Stand Cable Cover on the back of the Stand to separate it. (Vertical direction 1EA, Horizontal direction 1EA) (6-2) Separate the Cable Fixer, Pass the DC Cable through the holes, and pull down. Stand Cable Cover Stand Cable Cover Cable Fixer Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 24 Stand inner Guide Rail. For normal assembly, the left and right sides must be inserted to the end at the same time. Power Box Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 25 Working Guide (8-1) Unscrew Screw(F) 12EA on top of Power Box and separate Power Box Top Cover. Power Box Top cover Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 27 Assemble Guide (1-1) Cover the Power Box Top Cover and Screw the Screw(F) 12EA. Power Box Top cover Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 28 ※ For normal assembly, the left and right sides must be inserted to the end at the same time. (2-2) Screw the Power Box Fixation Screw(E) 3EA on the back of the Stand. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 29 (3-1) Insert the DC cable inside the back of the stand (red square part), and Pass through the upper square hole (green square part). Tighten the cable fixer. (3-2) Tighten the Stand Cable Cover. (Vertical direction 1EA, Horizontal direction 1EA) Cable Fixer Stand Cable Cover Stand Cable Cover Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 30 ※ When pressing the Latch part, Make sure that you hear a ‘Tap' sound and make a normal connection. (4-2) Screw the Back Cover Fixation Screw(D) 9EA. Back Cover inner holder joints Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 31 If necessary, fix the DC Cable with tape before inserting the Head. ※ The head of the shaft does not protrude from the stand surface. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 32 ※Check the DC Cable before assemble Reflector to Stand. Sound Reflector Cable does not protrude Cable protrudes to the outside (NG) to the outside (OK) Reflector attached by magnet. Sound Reflector Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 33 (7-3) Assemble the Main Cover and the Power Cover. Matching color of Cable and Label DC Cable Fixer Fixing Cable Cable Fixer Stand Cable Cover Stand Cable Cover Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 35 E. Noise Circuit noise, mechanical noise F. Exterior error Exterior defect First of all, Check whether there is SVC Bulletin in GSCS System for these model. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 36 ☞A4 & A2 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 37 Check various voltages of Check and No Video/ Normal Power Board Board (Main) replace No audio voltage? (12V,20V) MAIN B/D Replace Power Board and repair parts Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 38 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 © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 39 Replace Main/T-con B/D error cable normal Request repair for external device/cable Check external External HDMI device and device/Cable Replace Main/T-con B/D error cable normal Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 40 (Check normal operation of Replace Main HDMI/ Screen External Input, Component, normal? B/D, Module RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 41: Power Error
Measure each output voltage of Power B/D ☞A9 Check Power Normal Normal? ST-BY 7.8V voltage? Normal Replace Main B/D voltage? Replace Power Close Replace Power B/D Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 42 Normal Replace Main B/D Check Power B/D voltage? voltage ※ Caution Check and fix exterior Replace Power B/D of Power B/D Part Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 43 Check & Change OLED Module Power off by resume fail when dc on case. POWER_OFF_BY_RESUME_FAIL Check & Change Main B/D If occur the resume fail, TV will be rebooted. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 44 POWER_OFF_BY_PNWASHDONE Power off by panel noise wash function completed. POWER_OFF_BY_COOLING Power off for cool down the OLED t-con. POWER_OFF_BY_EDID_WRITE Power off by EDID write done. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 45 Screen normal voltage or not Power Board Cancel OFF Replace Power Board and repair parts Check Speaker Replace MAIN Board Disconnection disconnection Replace Speaker Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 46 (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 © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 47 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 © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 48 Download the Firmware • If you conduct the loop at 3times, change the Magic remote control. Instart Menu → 12.RF Remote control Test → Receiver Firmware Download Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 49 Voltage? Instart menu Main B/D “NG”? ☞A14 Close Check & Repair Wifi cable connection ☞A4 Wi-Fi Mac value is Close “NG”? Replace the Wifi assy Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 50 Recognitionerror - S/W Version HDMI/ Check and fix DVI, Optical Fix in Replace Main B/D Recognition external device/cable accordance error with technical information Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 51 Cable Make the Connect network function ‘on’ Close Close Change Voice Cable Connection Recognition Change Main B/D Is OK? Ass’y Close Re-connect Close Cable Close Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 52 “Part related to nose” in the Owner’s then proceed as shown in the solution manual Manual. (For models without any fix information, provide the description) Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 53 Revised date 18/18 Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote control Replace remote control damage Stand Replace stand dent Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 54 Defected Type caused by Cable / Main Board / Module Examples of Symptoms (Module) A-6~9/10 Examples of Symptoms (Power Board) A-10/10 Continue to the next page Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 55 Wifi/Motion remote operation checking method Voice Recognition operation checking method How to use the Service remote control A16~18 E. Etc Check items after Main B/D replacement Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 56 Revised Content Check Vx1 Lock date Check a voltage of R30325 when TV is on. Vx1 is OK if the voltage is 0V(Low). Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 57 2. Enter into White Balance. 3. After recording the R, G, B (GAIN, Cut) value of Color Temp (Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 58  All settings  Programmes Programme Tuning & settings  Manual Tuning When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 59 Revised Version checking method Content date 1. Checking method for remote control for adjustment Version Press the IN-START with the remote control for adjustment Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 60 1. Check the signal strength or check whether the screen is normal when the external device is connected. 2. After measuring each voltage from power supply, finally replace the MAIN BOARD. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 61 Revised Content Connection diagram date As the part connecting to the external input, check the screen condition by signal Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 62 A. Video error_Color error symptom date Revised Content Check Link Cable(VX1/EPI) reconnection condition date Check the contact condition of the Link Cable, especially dust or mis insertion. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 63 Screen darkness to disconnection of the FFC cable pin. G color transient due to poor FFC cable CABLE G Color Excessive connection A - 1/10 Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 64 VX1 cable connection problem CABLE Color spread VX1 cable connection problem Due to foreign substance withi nVx1 CABLE Screen stop cable PIN A - 2/10 Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 65 Main IC problem Main Dark picture Dark left-side screen Top/bottom screen part Main Broken picture Picture problem due to tuner Inner side quality problem A - 3/10 Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 66 Screen spread Screen corner appears blurry Main Color Spread Color spread on the screen Main Blurry Screen Blurry picture on the screen A - 4/10 Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 67 Screen picture spread problem Screen problem No problem at the initial stage. Right-side Main During Heat run, right-side picture picture problem problem A - 5/10 Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 68 Source-driver issue MODULE Image broken White dot cause by panel issue MODULE White dot MODULE Line dim Vertical line cause by source-driver IC A - 6/10 Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 69 Horizontal line Module is damaged MODULE Line defect Module is damaged Un-repairable cases MODULE Press damage In this case please exchange the module A - 7/10 Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 70 In this case please exchange the module difference MODULE Green light Compensation error when power on/off Color difference between screen cause MODULE Color difference by compensation error A - 8/10 Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 71 Module is damaged MODULE No image (Can’t fix it) Burnt MODULE Burnt (Can’t fix it) Screen Mura MODULE Mura (Can’t fix it) A - 9/10 Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 73 Established B. Power error _No power symptom date Revised Content Check front Power Indicator date ST-BY condition: On or Off Power ON condition: Turn Off Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 74 B. Power error _No power symptom date Revised Check power input voltage and ST-BY 7.8V Content date Check a voltage of DC 12VM (ST-BY : 7.8V, Normal : 12V) Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 75 POWER OFF MODE checking method date Entry method 1. Press the IN-START button of the remote control for adjustment. 2. Check the entry into adjustment item 3. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 76: Checking Method
1. Press the Setting button on the remote control. 2. Select the Sound function of the Menu. 3. Select the Sound Out. 4. Select TV Speaker. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 77 3. Connect the tester P20102 to the speaker terminal and if you hear the ‘Chik~ Chik~’ SPK_R+_TW SPK_L-_TW sound when you touch the GND and output terminal, the speaker is normal. SPK_L+_TW Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 78 2. Check the standby 3.5V on the terminal (③). 3. AS checking the Pre-Amp(IR LED light), the power is in ON condition, an Analog Tester needle should move slowly, otherwise, it’s defective. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 79 Checking order to check motion remote/wifi Checking order 1. Check BT/Wifi cable condition between BT/Wifi assy & Main board. 2. Check the 3.5V_WIFI on the terminal 13, 19, 24 Pin. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 80 Voice Recognition operating checking method date 1. Menu > General > AI Service 2. Voice Recognition Help and Settings 4. Active ‘Use Hands-free Voice Control’ 3. Settings Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 81 Standard Repair Process Detail Technical Manual Error Established E. Etc symptom date Revised Content How to use the Service remote control date 1. How to access the remote control Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 82 Digital EYE function ON/OFF For some Model, access to the Test Pattern TILT Used for screen tilting change (Access to the old PDP control mode) Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 83 Connects to external input 1,2,3 COMP1,2 (Added function) Connects to Component 1,2 HDMI1,2,3,4 Connects to HDMI 1,2,3,4 (Add function) DVI (Add function) Connects to DVI Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 84 - Record the R, G, B (GAIN, Cut) value of the color temperature before main board replacement. After replacing the main board, key in the recorded value. Copyright © 2021 LG Electronics. Inc. All rights reserved. Only for training and service purposes.

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Oled88z1pva Oled88z19la

LG OLED88Z1PTA Service Manual

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Summary of Contents for LG OLED88Z1PTA

Page 3: Safety Precautions

Page 4: Servicing Precautions

Page 6: Specification

Page 12: Block Diagram

Page 13: Exploded View

Page 34: Troubleshooting Guide

Page 41: Power Error

Page 76: Checking Method

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LG OLED88Z1PTA Service Manual

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Summary of Contents for LG OLED88Z1PTA

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