LG 65QNED91SQA Service Manual
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LG 65QNED91SQA Service Manual

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LED TV
SERVICE MANUAL
CHASSIS : UB22A
MODEL : 65QNED91SQA
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL71888069 (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.
Copyright © 2022 LG Electronics Inc. All rights reserved. Only training and service purposes.

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Summary of Contents for LG 65QNED91SQA

  • 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 ................. 11 EXPLODED VIEW .................. 12 ASSEMBLY / DISASSEMBLY GUIDE ........... 13 TROUBLE SHOOTING GUIDE ..........APPENDIX webOS22 new features & Usability ........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 4: Servicing Precautions

    - 4 - 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

    * Some models do not support HDMI4 USB Input My Media(Movie/Photo/Music List) or SVC SPDIF out Optical Audio out Ethernet Connect AV Input CVBS, Audio L/R Only for INDIA - 6 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 7: Dtv Mode

    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 - 7 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 8 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 - 8 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 9 (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 - 9 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 10 “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 - 10 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 11: Block Diagram

    BLOCK DIAGRAM - 11 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 12: 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. - 12 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 13 NG (In case of imbalance) ▪ Handling guide when moving the product - ▪ Top defect caused by imbalance ① ② ③ ④ ⑤ - 13 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 14 [Back Cover Disassembly Guide] (1) Lay the TV Set on a flat pad. (Disassemble Stand Assy) (2) Disassemble B/C Screw. (21 EA) - 14 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 15 (4) Preparing B/C remove after Checking the Module Latch Position. Latch : 65” 8EA - 15 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 16 (6) Disassemble the latch using Plastic scraper to remove the upper latch 4EA. (outside → inside) Top(Left) Top(Right) Plastic scraper Plastic scraper Plastic scraper Plastic scraper - 16 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 17 Latch : 65” 8EA (3) Connect the power cord and combine the power cord bracket from the left. - 17 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 18 (4) Assemble B/C Screw. (21 EA) - 18 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 19 ASSEMBLY / DISASSEMBLY GUIDE (MODULE) [The Guide of Module disassemble] ■ Step 1. Disassemble of Cover Shield L/R *Disassemble the Screws(7ea) ■ Step2. Disassemble FFC. - 19 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 20 * Two people should hold the left/right each side and reverse it. * Fix the S-PCB to Panel (use the tape). ■ Step 5. Disassemble of down screw 4ea in G/P Down - 20 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 21 * Light block pad(3ea) maybe take off during disassembly G/P. * Becareful to take off Guide Panel from double tape.(U : 12ea. L/R : 8ea) - 21 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 22 * Check Sheet and DP Up & Down ■ Step 10. Disassembly Inner Guide Panel Screw(20ea) * Screw Q’ty : Up 8ea, R/L 6ea each - 22 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 23 ■ Step 11. Disassemble Inner Guide Panel Hooks Hooks (U/R/L) Hooks (D) * Disassemble Hooks with flat stick. - 23 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 24 * Screw Q’ty : Up 8ea, R/L 6ea each ■ Step 2. Assembly DP and two sheets Down * Check Sheet and DP Up & Down - 24 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 25 ■ Step 4. Assembly G/P Down hooks.(Total 12ea) * Check carefully hooks assembly condition ■ Step 5. Assemble of down screw 4ea in G/P Down - 25 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 26 * Two people should hold the left/right each side and reverse it. ■ Step 8. Assemble of Case Top screws ④ ⑥ ⑤ ③ ② ① * Disassemble down side case top screws 6ea. - 26 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 27 ■ Step 9. Assemble FFC. ■ Step 10. Assemble of Cover Shield L,R * Assemble the Screws(7ea) and T-Con FFC(6ea). - 27 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 28: Troubleshooting Guide

    TROUBLE SHOOTING GUIDE Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 29 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 30 ☞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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 31 ☞A9 Check various Check and No Video/ Normal voltages of Power replace No audio voltage? Board (12V…) MAIN B/D Replace Power Board and repair parts Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 32 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 33 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 34 Replace (Check normal operation of 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 35: Power Error

    Measure voltage of each output of Power B/D Normal? Normal Replace Main B/D voltage? Normal Close Check Power ST-BY 7.8V voltage? ☞A9 Replace Power B/D Replace Power Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 36 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 37 Power off by panel noise wash function complited. (OLED) POWER_OFF_BY_FAN_ Power off by FAN operation status. CTRL_ERROR POWER_OFF_BY_TEMPER Power off by Temperature Sensor operation status ATURE_SENSOR_ERROR Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 38 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 39 (In case of Connect and check External Input Normal other external signal error) audio? 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 40: 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 41 Down load the Firmware * If you conduct the loop at 3times, change the MR22. * INSTART MENU  14.RF Remote control Test  3. Firmware download Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 42 Main B/D INSTART menu is “NG”? ☞A15 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 43 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 44 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 45 “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 46 Revised date 17/17 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 47 Exchange Module (1) ~ (3) A-6/11 ~ 8/11 Module Exchange T-Con (1) ~ (2) A-9/11 ~ 10/11 Exchange Power Board(PSU) A-11/11 Continue to the next page Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 48 Magic Remote/WiFi operation checking method How to use the Service remote control A16-A18 Check items after Main B/D replacement E. Etc Adjustment Test pattern - ADJ Key Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 49 Check Back Light On with naked eye date No Light If the Black light LED assemble is ‘OK’, you can see the lights on each points. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 50 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 51  All settings  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 52 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 53 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 54 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 55 A. Video error_Color error symptom date Revised Content Check Link Cable(CEDS) 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 56 Screen darkness to disconnection of the FFC cable pin. G color transient due to poor FFC cable CABLE G Color Excessive connection A - 1/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 57 LVDS cable connection problem CABLE Color spread LVDS cable connection problem Due to foreign substance withi nLVDS CABLE Screen stop cable PIN A - 2/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 58 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 - 3/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 59 Screen spread Screen corner appears blurry Main Color Spread Color spread on the screen Main Blurry Screen Blurry picture on the screen A - 4/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 60 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 - 5/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 61 BLU internal foreign matter inflow MODULE Internal matter 6 block image broken MODULE Image broken MODULE Image broken Screen sync signal broken A - 6/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 62 BLU Vertical spreading on cube screen in no MODULE Vertical smear signal MODULE Over color Screen contour part brightly Over color A - 7/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 63 Center of the screen 1 block dark MODULE Screen darkness MODULE Vertical bar Center Vertical Bar Darkness at the MODULE bottom of the MODULE internal BLU breakage screen A - 8/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 64 T-Con is defective and the picture below T-CON image broken the screen is broken A - 9/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 65 The entire screen is dark and bit noise T-CON Image Broken occurs The entire screen is dark and bit noise T-CON Image Broken occurs A - 10/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 66 Appendix : Exchange Power Board (PSU) #11 Check parts by symptom No Light No Power On A - 11/11 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 67 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 68 - SET On : above 3V - SET St-by : 0V 5. LED voltage Check : P202, 1~4 pin SK100 (AC input) All condition meets, Power Board OK. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 69 Local dimming data error LED blink 7 times Local data error (Checksum & Data Length) Slim Direct V-sync signal error LED blink 8 times No V-sync Slim Direct Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 70 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 71: 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 72 3. Connect the tester RX1 to 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 73 Checking order 1. Check IR cable condition between IR & Main board.(Check picture number① and ②.) 2. Check the standby 3.5V on the terminal. (③) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 74 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 on the terminal 1 pin. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 75 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 76 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 77 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 78 - 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 79 You can view 11 types of patterns using the ADJ 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 © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 80 & Usability Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 81 - [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 82 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 83: Home Screen

    - 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 84 [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 85 : 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 86 - 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 87: Background Mode

    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 88 “ 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 89 ● ● ○ 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 90 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 91 - 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 92 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 93: Tv Remote Control

    • 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 94 - 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 95 ※ 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 96 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 97: Split Screen Mode

    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 98 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 99 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 100 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 101 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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