LG 65ART90E QA Series Service Manual

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OLED TV

SERVICE MANUAL

CHASSIS : E*21T

MODEL : 65ART90E*QA

CAUTION

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

P/NO : MFL71888131 (2204-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.

Summary of Contents for LG 65ART90E QA Series

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 BLOCK DIAGRAM ................. 14 EXPLODED VIEW .................. 15 ASSEMBLY / DISASSEMBLY GUIDE ........APPENDIX TROUBLE SHOOTING GUIDE ..........APPENDIX webOS22 new features & Usability ........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 - Digital TV : DTMB (China/Hongkong), DVB-C (China) - Analogue TV : PAL D/K,I, NTSC-M (China/ Hongkong) 4) Philliphine - Digital TV : ISDB-T - Analogue TV : NTSC-M - 6 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 7 * Hong Kong - 3780, 0.4/0.6, 4/16/64QAM, PN945, 720 ► DVB-C - Symbolrate : 4.0Msymbols/s to 7.2Msymbols/s - Modulation : 16QAM, 64-QAM, 128-QAM and 256-QAM - 7 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 9 Audio out SPDIF(1EA) Optical Audio out USB Input (3EA) EMF, DivX HD, For SVC (download) JPEG, MP3, DivX HD Ethernet Connect (1EA) Ethernet Connect - 9 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 10 UHD DEEP COLOUR ON When HDMI 4096*2160 134.86 59.94 593.407 UDTV 2160P UHD DEEP COLOUR ON When HDMI 4096*2160 135.00 60.00 UDTV 2160P UHD DEEP COLOUR ON - 10 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 11 297.00 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 - 11 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 12 (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 - 12 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 13 “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 - 13 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 15 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. - 15 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 16 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. - 16 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 17 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. - 17 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 19 Floor (4) Remove the rear stopper of the front cover. (Left/right 2ea) ① Raise the stopper. ② Pull out the stopper. Stopper Position ② ① Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 20 (Do this simultaneously for the left and right cover tructure hooks.) ② Pull the cover forward. ① ① Cover Hook Inner Structure After removing the front cover Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 21 - If the power button separation is between modules and outer frames. required (However, the cushion must be inside the module glass area.) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 22 ① Raise each hook part upward. (Do this in each of 4 positions) Bracket for External Devices ② Pull the bracket all the way back. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 23 (3) Lift from the bottom of the back cover. (2) Loosen and remove the matching screws (2ea). (4) Remove the upper part of the back cover from the hook. There is a hook. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 24 - Not necessary when disassembling only the Mechanism Assy (Watch out for hook matches and guide ribs.) Power Board Main Board Speaker (R) Speaker (L) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 25 Open the holder while pressing Board Cable Holder the handle. Main Board (6-1) (6-1) (6-2) (6-1) (6-2) ① ① Speaker (R) Speaker (L) ② ② Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 26 - Loosen and remove the matching screws (3ea). Assy Hook Matching Part ② (12) (8), (9) Turn over Motion+IR/LED/Mic. EMS Bracket Square Hole (12) (12) (12) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 27 65ART90 Disassembly Guide Mechanism Assy Disassembly (1) Loosen and remove the matching screws (13ea). (2) Loosen and remove the matching screws (2ea). Mechanism Assy Mechanism Assy Module Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 28 Watch out for cable damage! Mechanism Assy Inner Frame Latch Direction of pushing the latch Front of SET Direction of inserting a flat head screwdriver Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 29 65ART90 Disassembly Guide Brightness Sensor Disassembly (1) Loosen and remove the matching screws (1ea). (2) Grasp the part or cable and pull it out. Brightness Sensor Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 30 (1) Loosen and remove the matching screws (1ea). (2) Loosen and remove the matching screws (2ea). Proceed in the order of ① → ②. (3) Separate the connector. ② ① Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 31 (3) Separate the connector. only 1ea needs to be disassembled. (4) Grasp the end of the motor and pull it out while shaking. Motor Coupling Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 32 ※ If coupling separation is required (8) Loosen and remove the matching screws (1ea). (Disassemble using an Allen wrench after finding the screw while rotating the coupling.) Motor separation complete Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 33 Full View Moving Supporter ※ Depending on the view, only the screw position differs depending on the position of the lead screw block (top or bottom). Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 34 Motor Motor Disk Lead Screw Block Screw Before disassembling the motor Coupling After disassembling the motor Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 36 (2) Insert and tighten the matching screws (9ea). Display: Guide protrusion & groove Raise the lead screw block slightly. Lead Screw Block Lead Screw Block Bottom Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 37 An assembly guide for the bottom of Motor seating surface the bracket exists. on bottom. 1mm or more separation required. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 38 Proceed in the order of ① → ②. (3) Connect the connector. (Reverse insertion is prevented.)(※ Caution on cable insertion location – Yellow / Blue) ① ② Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 39 ※ After connecting the connector, watch out for (2) Insert and tighten the matching screws (1ea). cable damage when fastening the screws. (3) Connect the connector. (Reverse insertion is prevented.) Brightness Sensor Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 40 Button (4), (5) Mechanism Assy Square Groove Watch out for Guide cable damage! Guide Groove Inner Frame Direction of Latching pushing Guide Front of SET Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 41 Support it with a soft cushion with a thickness of 5mm or more to prevent scratches and compensate for step differences between modules and outer frames. (However, the cushion must be inside the module glass area.) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 42 ① Wifi Board Hook Matching Part Motion+IR/LED/Mic. Square Hole Power Cord (12) (12) Assembling Wifi Board Using Latch Turn over (12) Hook Matching Part ② Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 43 (4) Attach the upper bracket with the matching screws (4ea). (5) Attach with the matching screws (2ea). ② ② (4), (5) Assemble using the guide projections. ① EMS Bracket Mechanism Bottom Square Groove Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 44 ③ Press down firmly so that the rubber is completely inserted. (10) Connect various connectors. (10) Power ② ② Board (10) (10) (10) (10) Main Board (10) ① ① ③ Speaker (R) Speaker (L) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 45 ※ Do not cover the hole of the display part after cord is below the arrangement. metal bar. (Prevents interference when assembling the back cover.) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 46 (2) Cover the back cover and press the lower part so that it can be inserted. ※ Avoid stepping on the power cord – Align it with the back cover groove and EMS bracket groove Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 47 ① Insert each hook of the bracket into the square holes. (4 places in total) ② Press down on each hook to make sure it is tight. Bracket for External Devices Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 48 Mounting by Use Scene Lean (when using bracket for Attaching to Being mounted Lean external devices) the wall Wall Wall Wall Wall Floor Floor Floor Floor Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 49 Align the side end of the cover with the boundary of the moving supporter. The cover should be ① positioned about 2cm higher than the moving supporter. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 50 (6) Hold the front of the front cover and insert the stopper in the back. (Left/right 2ea) ① Push the stopper into the groove. ② Press the stopper downward to insert it. Stopper Position ① ② Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 51 (Refer to the scene below.) Wall Wall Wall ※ It must be installed so that the bottom of the SET touches the floor. Floor Floor Floor Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 53 F. Exterior error Exterior defect G. Function error(Motor) Motor operation error 19-20 First of all, Check whether there is SVC Bulletin in GSCS System for these model. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 54 ☞A2 & A4 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 55 Revised date 2/20 ☞A9 Check and No Video/ Check Power Board Normal replace No audio 20V,12V output voltage? MAIN B/D Replace Power Board and repair parts Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 56 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 57 Replace Main B/D error cable normal Request repair for external device/cable Check external External HDMI device and Replace Main B/D device/Cable error cable normal Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 58 Replace (Check normal operation of screen? HDMI/ Screen Main /T-con External Input, Component, normal? RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 59 Measure voltage of each output of Power B/D Normal? Normal Replace Main B/D voltage? Normal Close Check Main ST-BY 7.8V voltage? ☞A9 Replace Power B/D Replace Power B/D Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 60 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 61 POWERONLY Power off for enter Power only mode NO_MOTION power off by Motion sensor(no motion) ROLL_ABNORMAL When motor operation problem occurs Check Motor operation error Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 62 Screen normal of Power Board voltage Speaker off Cancel OFF Replace Power Board and repair parts Check Speaker Replace MAIN Board Disconnection disconnection Replace Speaker Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 63 (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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 64 (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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 65 5sec RF Receiver ver Close is “00.00”? Replace MR22 Close Replace MR22 * If you conduct the loop at 3times, change the MR22. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 66 Voltage? 1pin Main B/D INSTART menu ☞A14 Close Check & Repair Wifi cable connection ☞A4 Wi-Fi Mac value Close is “NG”? Change the Wifi assy Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 67 Recognition error - S/W Version HDMI/ Check and fix DVI, Optical Replace Main B/D Fix in Recognition external device/cable accordance error with technical information Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 68 In the Menu activation Connection Connection Network Connection Activation Close Close Replace Cable Replace Connection Voice Recognition Main B/D Ass’y Close Cable Close Re-Connection Close Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 69 18pin Main B/D INSTART menu ☞A17 Close Check & Repair Motion cable connection ☞A16 Check Motion Sensor ☞A16 MOTION Close “NG”? Change Motion Sensor Module Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 70 “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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 71 Revised date 18/20 Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote control Replace remote control damage Stand Replace stand dent Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 72 Normal? Motor Replace Motor Normal? Photo Sensor Replace Down(Left/Right) Down Photo Sensor(Left/Right) Normal? Replace Door Mechanism Photo Sensor Encoder Replace (Left/Right) Photo Sensor Encoder(Left/Right) Normal? Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 73 Photo Sensor Check Motor Replace Up(Left/Right) Up Photo Sensor (Left/Right) Normal? Motor Replace Motor Normal? Photo Sensor Replace Down(Left/Right) Down Photo Replace Sensor(Left/Right) Door Mechanism Normal? Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 74 Exchange Main Board (1) ~ (3) A-3/10 ~ A-5/10 <Appendix> Exchange Module (1) ~ (4) A-6/10 ~ A-9/10 Exchange Power Board(PSU) A-10/10 Continue to the next page Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 75 Check Motion Sensor Operation A16-A17 How to use the Service remote control A18-A20 E. Etc Check items after Main B/D replacement Adjust Test pattern - ADJ Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 76 Check Photo Sensor and DRV IC Test Photo Sensor F. Front Cover moving error Check Mechanism Problem Check Power status in Power board Check Motor error Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 77 Check the voltage of R7632 (Blue) while turning on TV power If the voltage is low, Vx1 is locked.(OK) Low (0V) : Normal, High (3.3V) : Burnt Detect Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 78 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 79 All settings  General  Programmes  Programme Tuning & settings  Manual Tuning When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 80 Revised Content Version checking method date 1. Checking method for remote control for adjustment Version Press the IN-START with the remote control for adjustment Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 81 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 82 Revised Content connection diagram date As the part connecting to the external input, check the screen condition by signal Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 83 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 84 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 85 LVDS cable connection problem CABLE Color spread LVDS cable connection problem Due to foreign substance withi nLVDS CABLE Screen stop cable PIN A - 2/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 86 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 87 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 88 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 89 Image broken Bright spot occur due to panel defect MODULE Bright Spot Horizontal Line dim occur & MODULE Line Dim Vertical Noise occur A - 6/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 90 MODULE Horizontal multiple band noise band MODULE Line defect Vertical Line defect occur MODULE Module damage Module damage caused by the module A - 7/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 91 Source PCB Defect defect Panel defect MODULE Vertical band MODULE Green lighting Abnormal light emission MODULE Color step noise The difference in color A - 8/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 92 (In this case, it can’t be repared. Replace Module) Picture Mura (In this case, it can’t be repared. Module Mura Replace Module) A - 9/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 94 Established B. Power error _No power symptom date Revised Content Check front display LED date ST-BY condition: On or Off Power ON condition: Turn Off Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 95 Check power output voltage and ST-BY Voltage Content date Check DC 12VM (ST-BY : 7.8V, Normal : 12V) Power To Main B’d P201 P202 P252 P251 Power To Module SK100 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 96 POWER OFF MODE checking method date <ALL MODELS> Entry method 1. Press the IN-START button of the remote control for adjustment. 2. Check the entry into adjustment item 3. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 97 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 98 3. Connect the speaker terminal and if you hear the ‘Chik~ Chik~’ sound when you touch the GND and output terminal, the speaker is normal. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 99 2. Check the Main standby 3.5V on the terminal. 3. AS checking the IR LED light, the power is ON condition, an Analog Tester needle should move slowly, otherwise, it’s defective. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 100 Checking order to check motion remote/wifi Checking order 1.Check BT/Wifi cable condition between BT/Wifi assy & Main board. 2.Check the Main 3.5V on the terminal 1 pin Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 101 Check Voice Recognition Function activation date 1. All Settings > General > AI Serivice 2. Voice Recognition Settings 3. User Agreements 4. Activation of Voice Recognition Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 102 Motion : YES is displayed on the Screen. Press Instart key On the instart screen, check the motion check item OK Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 103 Checking order to check motion sensor Checking order 1. Check the cable connection between the main board and the IR PCBA. 2. Check Terminal no.18 Voltage => 3.5V Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 104 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 105 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 106 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 107 - 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 108 Press CH + or – key to change 11kinds patterns. 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 109 Standard Repair Process Detail Technical Manual Established F. Front Cover moving error Error symptom date Revised Content Check Photo Sensor and DRV IC date Check Photo Sensor  Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 110 Standard Repair Process Detail Technical Manual Established F. Front Cover moving error Error symptom date Revised Content Test Photo Sensor date  Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 111 Standard Repair Process Detail Technical Manual Established F. Front Cover moving error Error symptom date Revised Content Check Mechanism Problem date Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 112 Standard Repair Process Detail Technical Manual Established F. Front Cover moving error Error symptom date Revised Content Check Power status in Power board date P202 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 113 Standard Repair Process Detail Technical Manual Established F. Front Cover moving error Error symptom date Revised Content Check Motor error date  Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 115 - [Remote Control] webOS5.0 (2020) vs. webOS6.0 (2021) vs. webOS22 - [Home screen] webOS6.0 (2021) vs. webOS22 - [Homeboard] webOS4.5 (2019) ~ webOS22 dashboard supported products - WebOS22 new features & usability Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 116 Region Regio -/LIST changed to GUIDE/- General External input Settings Remote Control TV Icon printed Screen ratio (Netflix, Amazon, etc.) (Netflix, Amazon etc.) Screen ratio Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 117 - There is not much useful content in the top category. Added the category list editing function → The order of the top/ bottom of the list has been changed Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 118 [Homeboard] List of LG products that can be registered on webOS4.5 ~ webOS22 Home Dashboard * Push Compatibility Products notification webOS 4.5 (2019) webOS 5.0 (2020) 2021 webOS 6.0 2022 webOS22 supported Refrigerator Available after SW update Wine refrigerator in March, 2022...
Page 119 : You can watch a workout video on the main screen and observe yourself exercising using the camera app on the other screen at the same time. ■ Room to Room Share (Screen link): After connecting your LG TVs at home, you can watch the video that was only connected to the set-top box in the living room with the TV in your room.
Page 120 - It provides not only total TV screen time, but also daily/ weekly - Even if your child presses the remote control mistakenly, the screen time for each app. volume won’t go above 60. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 121 Standby Mode: Voice recognition available Back Here is the latest trending content. Background Mode Voice recognition : Hi LG, what is trending now? when the background mode is over Standby Q1. How much electricity does my TV consume in Background Mode or...
Page 122 “ Send Screen” available TV : Z2, G2, C2, QNED99/95 function? “ Get Screen” available TV : All LG TV models launched in 2022 During the screen transmission process, the original image is compressed and then data is transmitted through a wireless network.
Page 123 ● ● ○ Q5. Screen Saver automatically starts when no movement is detected for 30 Gallery ● minutes while watching videos using Multi View, (OLED) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 124 TV are on the same network Live TV / Switch input - Content search is always supported. * Supports webOS4.5 or higher version Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 125 - Receive notifications environments. - Turn off screen - Slide show speed - Screen on time setting - Enable Illuminance sensor Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 126 Connecting device Device type Select input terminal Select STB operator or manufacturer (If not in the list, search and select)  Test remote control operation (Follow the guideline on the screen)  Completed Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 127 • When controlling STB using the TV remote control connected to Sender TV, the Room-to-Room share function is disconnected. The sender TV screen turns on and it starts to work as a usual TV. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 128 - Place both ends (one or two) of the IR Blaster in front of the external device remote control receiver (usually located in front of the device). Customer Service Guide Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 129 ※ When [Turn on the TV using Wi-Fi] is OFF, there may be restrictions on other functions. -Turning on the TV on ThinQ App / AirPlay / Youtube, etc Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 130 If you want to change the settings of the connected external device, please change the settings on the TV to which the external device is connected after exiting the room-to-room function. (mirroring). Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 131 Live TV PIP mode Screenshare(Miracast) ※ Not applicable to China/ Hong Kong Camera products App 1 Customer Service Screenshare(Miracast) HDMI Guide App 2 Camera Gallery Spotify Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 132 XXNANO76 & its derivative model Name XXNANO75 & its derivative model XXUQ91 & its derivative model Guide XXUQ90 & its derivative model XXUQ80 & its derivative model Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 133 2) Turning off the high frame mode Dolby TrueHD audio signal 3) Setting the output resolution to 4K resolution or lower, 4) After setting the audio signal to PCM or AC3 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 134 8K, or Dolby MAT/Dolby 3) Setting the output resolution to 4K resolution or TrueHD audio signal ON lower, 4) Setting the audio signal to Dolby Digital or AC3 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 135 Dolby MAT audio signal Service Audio game controller settings, you can try again after setting the audio signal to Dolby TrueHD audio signal Guide Dolby Digital or AC3. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.

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