LG OLED77W8PTA Service Manual

Chassis eb81w

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OLED TV

SERVICE MANUAL

CHASSIS : EB81W

MODEL : OLED77W8PTA / PVA / YVA

CAUTION

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

P/NO : MFL70425425 (1803-REV00)

CONFIDENTIAL

Summary of Contents for LG OLED77W8PTA

Page 1 CHASSIS : EB81W MODEL : OLED77W8PTA / PVA / YVA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL70425425 (1803-REV00) Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 2 SERVICING PRECAUTIONS ..............4 SPECIFICATION ..................6 SOFTWARE UPDATE ................10 BLOCK DIAGRAM ................. 11 EXPLODED VIEW .................. 18 DISASSEMBLY GUIDE............. APPENDIX TROUBLE SHOOTING GUIDE ..........APPENDIX - 2 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 3 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 PC(HDMI Ver. 1.4), Support HDCP Audio Input DVI Audio, Component, AV SPDIF out SPDIF out USB Input For My Media(Movie/Photo/Music List) or For SVC Ethernet Connect - 6 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 7 1920*1080 33.75 60.00 74.25 HDTV 1080I 1920*1080 56.25 50.00 148.50 HDTV 1080P 1920*1080 67.43 59.94 148.50 HDTV 1080P 1920*1080 67.50 60.00 148.50 HDTV 1080P - 7 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 8 UHD DEEP COLOUR ON When HDMI1,2,3 4096*2160 134.86 59.94 593.407 UDTV 2160P UHD DEEP COLOUR ON When HDMI1,2,3 4096*2160 135.00 60.00 UDTV 2160P UHD DEEP COLOUR ON - 8 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 9 297.00 UDTV 2160P 3840*2160 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 UDTV 2160P - 9 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 10 (8) After TV turned on, Check the updated SW Version and Tool Option (6) Turn OFF the TV and On. Check the updated SW Version and Tool Option. - 10 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 13 1.2V DDR 3.5A 5V Normal 2.5V DDR4 VPP LDO 1A 3.3V Normal SOC-O18 1.8V IO 0.9V DDR AUDIO AMP. IC FRONT AUDIO AMP. IC WOOFER - 13 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 18 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. - 18 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 20 ※ Follow the Manual. (1-1, 1-2, 2-1, 2-2, ... ) (1-1) Put the soft cloth and set AIO Box as indicated below picture. (1-2) Stand AIO Box as indicated below picture. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 21 (2-1) Disassemble screw 8EA. (Top Cover Ass’y – Middle Bottom Ass’y – Rear Cover Ass’y) (2-2) Disassemble screw 8EA. (Middle Bottom Ass’y – Rear Cover Ass’y) Top View Front View Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 22 (3-1) Disassemble Cover, Bottom Rear that is assembled with latch 9 points (Working direction : from Right to Left) Push the Cover, Bottom Rear both side and pull as indicated below picture. Cover, Bottom Rear 툭 툭 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 23 (4-4) Before open the Ass’y Cover Top, you have to disconnect cable (2points). Ass’y, CoverTop After disassemble Cover, Bottom Rear ※ For disassembly guide of Ass’y Cover Top item, refer to (19-1)~(23) term. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 24 (5-1) Disassemble screw 4ea that is fixing of Speaker R. (5-2) Disassemble screw 4ea that is fixing of Speaker R. (5-3) Disconnect Speaker cable. Speaker, R Speaker, L After disassemble Ass’y, CoverTop Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 25 . (4points) (6-2) Disassemble screw 4EA. (6-3) Remove PCB 2EA and EMI Tape 4EA and put the cable right side. After disassemble Speaker 6-1,2 6-1,2 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 27 (8-4) ~ (8-6) Disconnect the cable. (8-7) Remove Power. (Warning: Hold end of the Power PCB to prevent ELECTRONIC SHOCK.) After disassemble Plate Power Shield Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 28 * In case of (9-2), the screw is covered with Insulation sheet, disassemble the screw after lift end of the Insulation Sheet. After Power Bottom Shield disassemble Power Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 29 OLED77W8 – Working Guide (10-1) Lift right of Power Bottom Shield. (10-2) Disconnect cable below of left of Power Bottom Shield (3points). 10-2 10-2 10-2 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 30 (11-3) Disconnect the cable from Main PCB and Sub Main PCB. Main PCB After disassemble T-Con PCB Main PCB Power Bottom Shield 11-1 11-3 11-2 11-1 11-1 11-2 11-3 11-3 11-3 11-2 11-3 11-2 11-3 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 31 Main PCB 12-3 12-2 12-1 12-3 12-3 12-2 12-2 12-1 12-1 12-1 12-1 12-3 12-3 12-2 12-1 12-1 12-2 12-4 Gap Pad Gap Pad Gap Pad Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 32 OLED77W8 – Working Guide (13-1) Disassemble cable from holder. Disconnect cable 2ea from LED Lighting. Middle Cabinet LED Lighting After disassemble T-Con/Main PCB 13-1 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 33 (14-1, 14-2)Push the latch and pull the end of the right side of LED Lighting to disassemble LED Lighting. (Latch is 4ea) Refer the below picture. LED Lighting 14-1 14-1 14-1 14-1 Direction 14-1 14-2 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 34 OLED77W8 – Working Guide (15-1) Disassemble screw 1EA and remove Power Cord. Power Cord 15-1 15-1 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 35 16-1 16-1 16-1 16-1 16-1 16-1 After disassemble Bottom Plate LED Lighting, Power Cord 16-1 16-1 16-2 16-3 16-2 16-2 16-2 16-2 16-2 16-3 16-4 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 36 (17-3) Disassemble cable from Cover, Bottom and disassemble WiFi Bracket. Indicator After Cover, Bottom disassemble Wifi Joystick Middle Cabinet 17-1 17-2 17-2 17-2 17-1 17-3 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 37 After disassemble Joystick Indicator Wifi 18-1 18-1 18-1 18-2 18-2 18-2 18-2 18-1 ☞ Done Disassembly Guide for Cover Top Assy start from next page. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 38 Front of Set 19-2 19-2 19-2 19-2 Caution!! When removing Top Cover and Moving Ass’y, do not hold the drive shaft and switch by hand. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 39 Rear of Set Front of Set 20-2 20-1 Rear of Set Front of Set ※ Rib of moving Ass’y is inserted into projection part(‘┌’shape) of Cover Top. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 40 (21-1)~(21-2) Turn the side projection of the Moving Ass’y in the direction of arrow mark. ※ Handle with care and slowly to avoid damage. ※ Do not force to the product strongly. 21-1 21-2 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 41 (22-2) Disassemble screw (4EA) that is fixing Sliding Cover. ※ Handle with care and slowly to avoid damage. ※ Do not force to the product strongly. 22-1 22-2 21-2 21-2 21-2 21-2 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 42 ■ When replacing the Sliding Cover or Top cover, Check that there is no color difference between Cover Top and Sliding Cover. Cover Top. Sliding Cover. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 44 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 45 ☞A4 & A2 Always check & record S/W Version and White Balance value Replace Main B/D Re-enter White Balance value before replacing the Main Board Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 46 No Video / Check Power Board Normal Check and replace No audio output to Main (20V, 12V ) Main B/D Voltage? Replace Power B/D or repair parts Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 47 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 48 Replace Main B/D error and cable normal Request repair for external device/cable Check External HDMI external device Replace Main B/D device/Cable error and cable normal Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 49 (Check normal operation of Screen screen? Main B/D / HDMI External Input, Component, normal? Module AV and HDMI by connecting Jig, pattern Generator ,Set- top Box etc. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 50 Replace Main B/D voltage? Check ST- Normal · FAN Error or high temperature : blue BY (7.8V) voltage? Replace Power B/D ☞A16, A17, A18 Replace Power B/D Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 51 Normal Replace Main B/D Check Power B/D voltage? output voltage ※ Caution Check and fix exterior Replace Power B/D of Power B/D Part Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 52 Check whether Module cable is connected. POWER_OFF_BY_OLED_AM_MODE If the Module cable is disconnected, the Micom is forced to power off TV. If still occurs , change Module & T-CON Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 53 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 54 Power Board Speaker Select Internal TV Speaker Replace Power Board or repair parts Check Speaker cable Disconnection Replace Main B/D connection Connect Speaker cable Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 55 (In case of External Input Connect and check signal error) Normal other external Check and fix external audio? device device Check and fix external device Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 56 If R/C operate, Normal Close operating? Explain the customer cause is interference from light in room. Normal Replace Main B/D Voltage? Replace R/C Replace Power B/D Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 57 Download the Firmware •If you conduct the loop at 3times, Instart Memu change Magic Remote control  12.RF Remote control Test  Receiver Firmware Download Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 58 Voltage? 1/6 pin Instart menu Main B/D ☞A15 Close Check & Repair Wi-Fi cable connection ☞A4 Wi-Fi MAC Close is “NG”? Replace the Wi-Fi assy Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 59 Recognition error input signal - S/W Version HDMI/DVI, Check and fix Fix in Optical Recognition Replace Main B/D external device/cable accordance error with technical information Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 60 Moving SPK with Moving New one. SPK noise ※ Explain ‘Generated Sound’ part of Trouble shooting in the Owner’s Manual to the customer if needed. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 61 Exterior defect Revised date 17/17 Zoom part with Module Replace module exterior damage damage Remote control Replace remote control damage AIO Box Replace AIO Box damage Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 62 Defected Type caused by Cable / Main Board / Module Example of Symptom (Module) A-6/9 Example of Symptom (Module) A-7/9 Example of Symptom (Module) A-8/9 Example of Symptom (Module) A-9/9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 63 How to use Factory SVC Remote control A19~A21 E. etc. Check items after exchanging main B/D How to use JIG (Smart JIG Power Diagnosis Multi Gender) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 64 Check a voltage of R7632 after turn on the TV. Check a voltage of R7624 after turn on the TV. If it is high, BDP issue.(NG) If it is low, Vx1 is locked.(OK) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 65 2. Enter into ‘12.White Balance’. 3. After recording the R, G, B (Gain, Cut) value of each Color Temp(Cool/Medium/Warm), re-enter the value after replacing Main board. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 66 All Settings  Programmes  Programme Tuning & Settings  Manual Tuning 3. Check the signal level. When the signal is strong, use the attenuator. (-10dB, -15dB, -20dB etc.) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 67 A. Video error_Video error, video lag/stop symptom date Revised Content Version checking method date Version 1. Press ‘IN START’ button on Factory SVC Remote control. 2. Check S/W Version. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 68 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 69 [ OLED77W8 ] Check the connection between main board and sub board.(①) As the part connecting to the external input, check the screen condition by signal. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 70 A. Video error_Color error symptom date Revised Content Check Link Cable(Vx1) reconnection condition date Check the contact condition of the Link Cable, especially dust or mis-insertion. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 71 You can view 11 types of patterns using the CH+ or - key Checking item : 1. Defective pixel 2. Residual image 3. Module error (ADD-BAR,SCAN BAR..) 4. Video error (Classification of Module or Main B/D) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 72 Screen darkness to disconnection of the FFC cable pin. G Color G color transient due to poor FFC cable Cable connection Excessive A - 1/9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 73 Vx1 cable connection problem Cable Color spread Vx1 cable connection problem Due to foreign substance withi nLVDS Cable Screen stop cable PIN A - 2/9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 74 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 - 3/9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 75 Screen spread Screen corner appears blurry Main Color Spread Color spread on the screen Main Blurry Screen Blurry picture on the screen A - 4/9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 76 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 - 5/9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 77 Source Driver issue Module White dot White dot cause by panel issue Module Line Dim Vertical Line cause by source drive IC A - 6/9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 78 Horizon line Module has damaged Module has damaged Module Line Defect Un-repairable Cases Module Press damage In this case please exchange the module A - 7/9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 79 In this case please exchange the module difference Compensation error when Power On/off Module Green light Color difference between screen cause Module Color difference by compensation error A - 8/9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 80 Module has damaged Module No image (Can’t fix it) Burnt Module Burnt (Can’t fix it) Screen Mura Module Mura (Can’t fix it) A - 9/9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 81 Stand-by condition : Red Power On condition : Turn Off ※ Power indicator control Menu  All Settings  General  Standby Light  ON/ Off Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 82 Check 12VM line for ST-BY Voltage, ST-BY status : 7.8V, Power on(DC On) status : 12V Power to Main B/D P251 P201 OLED65W8 P201 Power To Module [ OLED77W8 ] Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 83 POWER OFF MODE checking method date 1. Press ‘IN START’ button on Factory SVC Remote control. 2. Check the entry into ‘3. Power On/Off Status’. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 84 Checking method in menu when there is no audio date 1. Press ‘MENU’ button. 2. Select ‘All Settings’ 3. Select ‘Sound’ menu and ‘Sound Out’. 3. Select Internal TV Speaker. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 85 3. Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik SPK_L-_CT sound when you touch the GND and output terminal, the speaker is normal. SPK_L+_CT Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 86 3. As checking the Pre-Amp of IR B/D(③) , the power is in ON condition, an Analog Tester needle should move slowly, otherwise, it’s defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 87 1. Enter into ‘Instart’ menu with press ‘IN START’ button and check the condition of Wi-Fi and BT. 2. Check Wi-Fi/BT cable condition between Wi-Fi/BT ass’y and Main board. 3. Check +3.5V_WIFI on pin 1/6. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 88 1. Check LED color (Orange). 2. Unplug power cord. 3. Reconnect a cable from module to AV box(or Extension cable). 4. Plug power cord and check LED color again. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 89 3. Check 12V for Door motor(L5104, L5124, L5125). 4. Check detect switch broken or not. 5. Check motor. 6. Replace each part or cover top assy. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 90 1. Check LED color (Blue). 2. Check Fan and Temperature sensor status. -. Instart menu  13.OLED  FAN Status and Temp.Sensor Status 3. Replace Fan or Temperature sensor. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 91 Standard Repair Process Detail Technical Manual Error Established E. etc. symptom date Revised Content How to use Factory SVC Remote control date 1. How to access Instart/Adjust menu. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 92 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 93 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 94 - Record the R, G, B (Gain, Cut) value of each color temperature before main board replacement. - After replacing the main board, key in the recorded value. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 95 Smart JIG Power Diagnosis Muitl Gender Guide (P/N : RAD32507801) (P/N : RAD33187801) A 23 (1/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 96 24 Marking Check UK74 28Pin 28Pin 12Pin 12Pin 28Pin UK75 Cable Connection UK78 Includes 49UJ63 SK79 17Y/18Y 16/18Y 16Y/17Y 16Y/17Y/18Y (SJ/UJ/UK/SK) (UH) (UH/UK) A23 (2/19) (UH/SJ) (LH/LJ/LK) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 97 SJ95/UJ98 SJ85/UJ94 SJ80, UJ77 UJ75/UJ78 ’17 UJ65/UJ68 UJ63/UJ67 LJ61/LJ68 LJ55/LJ58 SK80/SK85/SK95 UK78/UK75/SK79 ‘18 UK63/UK64/UK65/UK7050 32LK61/62, 43/49LK61 B8, C8, E8 ‘18 OLED G8, W8 A23 (3/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 98 “A: 2013 LCD POWER” 2014 ▶ Connect the Muiti Gender to the connector (black) as shown in picture 2 of the Smart JIG. A23 (4/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 99 - 20V Power Board : Change the switch to 24V of Smart Jig Voltage - 13.2V/18V Power Board : Change the switch to 24V of Smart Jig Voltage Power B/D Smart Jig Voltage Switch 13.2V/18V A23 (5/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 100 ▶ Disconnect the Main Board 24Pin Power Cable connector. ▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 24Pin connector A23 (6/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 101 ▶ When the OK LED(24V,12V) turns on, Power Board is normal. ▶ When the NG LED turns on, the Power Board can be judged as defective. A23 (7/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 102 ▶ When the OK LED(24V,12V) turns on, Power Board is normal. ▶ When the NG LED turns on, the Power Board can be judged as defective. A23 (8/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 103 ▶ When the OK LED(24V,12V) turns on, Power Board is normal. ▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 24Pin connector A23 (9/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 104 ▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A23 (10/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 105 ▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A23 (11/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 106 ▶ When the NG LED turns on, the Power Board ▶ Fix the LCD MODEL switch to 20V.(Smart JIG) A23 (12/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 107 ▶ When the NG LED turns on, the Power Board ▶ Fix the LCD MODEL switch to 20V.(Smart JIG) A23 (13/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 108 ▶ Connect the 18Pin Power Cable connector to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A23 (14/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 109 ▶ Connect the 28Pin Power Cable connector to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board A23 (15/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 110 ▶ Connect the 28Pin Power Cable connector to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board A23 (16/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 111 ▶ Connect the 12Pin Power Cable connector to the Muitl Gender JIG 12Pin connector ▶ When the NG LED turns on, the Power Board A23 (17/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 112 ▶ Connect the 12Pin Power Cable connector to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A23 (18/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
Page 113 ▶ Connect the 28Pin Power Cable connector to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board A23 (19/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes...

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