LG 17Z90NRAAC8U1 Service Manual

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17Z90N Series

REV. 01

2020. 04. 14

Retention period until : 2023-12

Only training and service purposes.

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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: Table Of Contents
System Block Diagram Using Hot Keys Part lists Operation Status Lamps BIOS Flash Check Secure Boot BIOS Setup Exploded view System Recovery Recovering from a Boot Failure Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 3: Cautionary Items For Service
Check malfunctions after familiarizing yourself with the following. Notices Only a skilled person authorized by LG Electronics can repair the PCs. Before replacing any parts, you must fully familiarize yourself with the part repair procedures shown in "Part (FRU) disassembly and replacement".
Page 4: Common Safety Rules
2 Depending on the type of PC, there can be a processor board and a system board. Replace each board once at a time and install it. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 6 If an electrical accident occurs, 1 Pay special attention to avoid becoming a victim yourself. 2 Turn off the power switch. 3 Ask others to request medical supports. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 7: Safety Inspection Guide
LG Electronics. If there are many factors for insecurity, determine the level of risk and also whether you can proceed further without fixing the problems.
Page 8: Grounding Conditions
You should handle the battery according to the regulations. You need to only use or replace with the battery in the part list. If the battery is used/replaced in an incorrect way, it can cause ignition or explosions. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 9: Cautionary Items For Storage Devices (Hdd/Ssd) Replacement
Backup (Standby) RTC battery safety information When replacing or disposing of the backup (standby) RTC battery, note the following : Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 10: Names Of Parts
Names of Parts Names of Parts Front 1 Webcam Operation Status Lamp 2 Webcam 3 Built-in Microphone 4 Keyboard 5 Touchpad 6 Power button [ ] (Fingerprint Sensor) Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 11: Left
When using ear microphone (or Bluetooth headset), audio input and output are directed to the connected device and the microphone and speaker on PC do not work. The 4-pole ear microphone port does not support external microphone. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 12: System Information And Bios
Manufacturers and installers cannot provide services related to human safety as this wireless device may cause radio interference. Web Camera • HD Webcam • It may not be available depending on the model. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 13: Product Weight
It may not be available depending on the model. Product Weight • Approx. 1350 g (battery included) • The weight may differ depending on the model. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 15: Using Hot Keys
Works as the Scroll Lock [Scr Lk] key. Fn + Hanja Works as the [Pop-up Window] key. Fn + Works as the [Home] key. PgUp Fn + Works as the [End] key. PgDn Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 16: Operation Status Lamps
7 Webcam Operation Status Lamp • On: When the webcam is operating • Off: When the webcam is not operating NOTE • Applies only to models equipped with a webcam. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 17: Bios Flash
To boot the system with a USB, first hit the [F2] key to enter the BIOS Setup menu and in the Boot Menu, switch the USB device to the highest booting priority or press the [F10] key when the LG logo is displayed to retrieve the Boot Menu and select the device to use next time.
Page 18 10 Press the [F2] key to enter the setup menu and check if the BIOS update is performed. In addition, check the KBC version as well. 11 In the Exit menu, select Load Setup Defaults or press the [F9] key to retrieve the initial BIOS settings. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 19: Check Secure Boot
6 When the system is rebooted, enter the BIOS Setup menu again and check if the Secure Boot setting is as shown in the below figure. (Check UEFI Secure Boot / Protected Signatures / Secure Boot Option.) Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 20: Bios Setup
2 After the restart, press the [F2] key. The booting speed is faster than the existing models. You'd better press it as soon as the system restarts. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 21: Home Screen
Specify on which driver you will first start searching for the operating system. Press the [F5], [F6] keys to change the booting sequence. • Exit: You can save the changes in the setup, or reset to the initial value. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 22 Ʃ KBC Version Ʃ Serial Number Ʃ UUID Number Ʃ Processor Type Ʃ Processor Speed Ʃ System Memory Speed Ʃ Total Memory Ʃ Open Source Licenses Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 23: Advanced Menu
System Information and BIOS Advanced Menu • RTC Wakeup from S4: Valid Only for ACPI. Controls the value for the RTC S4 flag in the FACP table. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 24: Security Menu
Set SSD User Password: Set up a Password on the device. • Current seleted TPM Device: Choose current on board TPM device. • TPM Configuration: Set the TPM function. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 25 [F6] key to move down the device disk. By moving the device drive up or down, you can change the priority for system booting. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 26 Defaults or press [F9], Setup Confirmation asks you to confirm your selection. Press Yes to load setup defaults. • Discard Changes: This returns to the factory default settings for each parameter in the Setup menu. • Save Changes: Save change value. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 27: System Recovery
• To recover the system, the AC adapter must be connected. 1 Click the [ ] button and select the Settings menu. 2 When the [Settings] screen appears, select [Update & Security]. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 28 3 Select the [Recovery] menu and press [Get Started] in the Reset this PC menu. 4 If the following screen appears, select a desired option to proceed with recovery. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 29 System Recovery Keep My Files It removes the apps and their settings without loss of personal files. 1 Select [Keep my files]. 2 Check the current settings. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 30 System Recovery 3 If you need to change the settings, press [Change settings] and press the [Confirm] button. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 31 • All data is lost during the initialization, so you must backup all critical data in advance. • It may take about 5 hours or longer depending on the system conditions. 1 Select [Remove everything]. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 32 System Recovery 2 Check the current settings. 3 If you need to change the settings, press [Change settings] and press the [Confirm] button. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 34: Recovering From A Boot Failure
System Recovery Recovering from a Boot Failure If you cannot boot the system due to a serious error with the system, you can recover the system using LG Recovery Center RE. CAUTION • If you have deleted the restoration data in the protected area of the hard disk, or have arbitrarily installed another operating system, the 'Restore' function may not work.
Page 35 3 When the following screen appears, select the [I Agree] button and click the Next button. 4 When the factory reset has been completed as shown in the following figure, click the [Complete] button and restart the system. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 36: Using The New Functions
The screen color can be set to cold (with a bluish tint) or warm (with a reddish tint). 1 Select [ ] > [LG Software] and run [LG Control Center]. 2 Select [System Settings] > [Color Temperature] to set the color temperature. (Cold: 4 levels, Warm: 4 levels) NOTE •...
Page 37: Fingerprint Recognition
] button and select the [Settings] menu. 2 When the [Settings] screen appears, select [Account] > [Sign-in options]. 3 Press the [Add] button under the [PIN] menu to set the password. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 38 • You can register up to 10 fingerprints, but registering more than 10 will reset the registration and you will have to register your fingerprint again. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 39 ] button and select the [Settings] menu. 2 When the [Settings] screen appears, select [Account] > [Sign-in options]. 3 Press the [Add] button under the [PIN] menu to set the password. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 40 • You can register up to 10 fingerprints, but registering more than 10 will reset the registration and you will have to register your fingerprint again. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 41 You can simultaneously turn on the PC and log in to Windows using the registered fingerprint. NOTE • The One Touch login function is currently only available on LG gram models. Copyright © 2019-2020 LG Electronics Inc. All rights reserved.
Page 42 The message can be displayed sometimes because of anti fingerprint forgery function or because the fingerprint was not properly recognized. Lightly touch the fingerprint recognition device again to log in. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 44 • If the sleep mode is activated, press the power button (fingerprint recognition) again to log in to Windows and use the Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 45: Dual Storage
1 Right click with the mouse button on the [ ] button > Run [Disk Management] > Select [Mounted Disk]. 2 Right click with your mouse > Select [New Simple Volume]. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 46 1 After pressing the [ ] button, select [Windows System] > [Control Panel] > [System and Security] > [Storage Space] > [Create a new pool and storage space]. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 47 Using the New Functions 2 Proceed to configure the drive with the newly installed disk. 3 After selecting a restoration type, you can proceed. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 48 3 Three-way mirror: Complex composition of RAID 0, 5. Needs at least five drives. 4 Parity: Corresponds to RAID 5. You can set the capacity to higher than the available disk space. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 49: Type-C Charging Function
• The function supports inputs of 5V@2A or more, 9V@1.6A or more, 12V@1.25A or more, 15V@1A or more, 19V@0.78A or more, and 20V@0.75A or more. • If the external power supply supports one or more of the six V@A specifications above, you can connect it to LG gram to charge LG gram.
Page 50: Malfunction Diagnosis And Related Parts
4 After about 10 seconds, connect the power cord and measure the output voltage of the AC adapter. 5 If the voltage is wrong, replace the AC adapter. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 51: Check Battery Pack Check (Laptop/Tablet)
If the voltage difference is still below the main voltage of the battery label after charging, it is necessary to replace the battery. CAUTION • Even if the charging lamp is not lit, you need to charge it for at least three hours. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 52: Check Audio System
2 If the driver is not the latest version, uninstall the previous driver and install the latest version. 3 If the driver is properly installed, reconnect or replace the module and check whether the problem continues. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 53 11 If the speed is lowered on a particular AP or at a specific location, there is a possibility that the problem is with the particular AP, speed limit due to the number of AP users, or compatibility with the particular AP. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 54 • Numbered items should be taken care of in the order of number. • When proceeding with each numbered items, check the performance improvement. For the performance improvement, you don't need to proceed to the next steps. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 55: Lcd Related Symptoms
Check if the SODIMM memory is defective. The power supply lamp is lit and during posting, there is nothing on the LCD. c LCD assembly d System board Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 56: Unchecked Problems
8 Pay special attention to avoid replacement of parts with no defects. • LCD assembly (Check repeating problems by using the external monitor.) • System board • MNT or MTV board Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 57: Part Disassembly And Replacement
• Torque of 2.0 ± 0.2kgf • Cm applies when screwing on each part. • For further information on Removing and Replacing a Part(FRU), refer to Explore view. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 58: 1010 Bottom Case
Part Disassembly and Replacement 1010 Bottom Case 1 Remove the 5 rubbers after 6 screw sheets. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 59 Part Disassembly and Replacement 2 Remove the 11 screws. FRU No. Specification FAB33419401 Screw, M2.0 x L5.0 x D4.8 x H0.6 Silver 11 EA 3 Remove the Bottom Case. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 60 1 Disconnect the 1 cable after removing the 6 screws. Cable FRU No. Specification FAB31738904 Screw, M2.0 x L3.5 x D4.8 x H0.6, Silver 6 EA 2 Remove the Battery. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 61 Bottom Case(1010) b. Battery(1020) 1 Remove the 2 screw. FRU No. Specification FAB31882801 Screw, M2.0 x L2.0 x D5.8 x H0.4 Black 2 EA 2 Remove the SSD. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 62 Part Disassembly and Replacement NOTE Dual SSD Installation Guide • Slots Master and Slave both support NVMe (PCIe) and SATA SSD. Master Slave Master Slave Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 63 • Remove the following parts in order before replacing this part. a. Bottom Case(1010) b. Battery(1020) 1 Disconnect the 2 hooks. Hook Hook 2 Remove the Memory. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 64 • Remove the following parts in order before replacing this part. a. Bottom Case(1010) b. Battery(1020) 1 Disconnect the 2 cables. Cable Cable 2 Remove the Speaker. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 65 1 Disconnect the 1 cable after removing the 3 screws. Cable FRU No. Specification FAB31738904 Screw, M2.0 x L3.5 x D4.8 x H0.6, Silver 3 EA 2 Remove the FAN. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 66 Bottom Case(1010) b. Battery(1020) c. FAN(1060) 1 Remove the 4 screw. FRU No. Specification 1SZZBZ3009J Screw, M2.0 x L2.5 x D4.0 x H:1.0, Green 4 EA 2 Remove the Heat Pipe. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 67 1 Disconnect the 5 cables after removing the 6 screws. Cable Cable Cable Cable Cable FRU No. Specification 1SZZBZ3009J Screw, M2.0 x L2.5 x D4.0 x H:1.0, Green 6 EA 2 Remove the Mainboard. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 68 1 Disconnect the 3 cables after removing the 3 screws. Cable Cable FRU No. Specification 1SZZBZ3009J Screw, M2.0 x L2.5 x D4.0 x H:1.0, Green 3 EA 2 Remove the Sub Board & Cable. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 69 • Remove the following parts in order before replacing this part. a. Bottom Case(1010) b. Battery(1020) c. Sub board & Cable(1090) 1 Disconnect the 1 cables Cable Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 70 Part Disassembly and Replacement NOTE • For the model without the feature of fingerprint recognition, the power button can be separated by pushing into the keyboard deck. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 71 • Remove the following parts in order before replacing this part. a. Bottom Case(1010) b. Battery(1020) 1 Disconnect the 1 cable. Cable 2 Remove the Touch Pad Cable. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 72 • Do not replace the touch pad arbitrarily. It may affect the height difference with the keyboard deck and the touch sensitivity. 2 Remove the Keyboard Deck. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 73 • If you attach too much force to the front case, there is a risk of damage. • After removing the side hook, please remove the top. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 74 • When detaching the hook at the bottom of the front, slowly disassemble it by checking the inner side of the tape from one side. Remove the LCD Front Case. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 75 FRU No. Specification FAB31738904 Screw, M2.0 x L3.5 x D4.8 x H0.6, Silver 6 EA 2 Pull the Hinge Cap to separate as the picture below. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 77: 1150 Lcd Assembly
• When you are removing the tape of the LCD Assembly, use Heating Gun to heat it moving back and forth around 10 times to separate. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 78 • Please be careful when you heat with a hair dryer. 2 Rear Ass'y After heating, remove the LCD Assembly using the separation tool. 3 Disconnect the 1 cable. Cable Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 80 Touch Pad Cable(1110) l. Keyboard Deck(1120) m. LCD Front Case(1130) n. Hinge Cap(1140) o. LCD Assembly(1150) 1 Disconnect the 1 cable. 2 Use the decomposition tool to remove the webcam. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 82 1 Remove the 8 screws and remove the hinge & LCD cable. FRU No. Specification FAB34740201 Screw, M2.0 x L2.5 x D4.8 x H0.6, Silver 8 EA Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 83 Touch Pad Cable(1110) l. Keyboard Deck(1120) m. LCD Front Case(1130) n. Hinge Cap(1140) o. LCD Assembly(1150) p. Webcam(1160) q. Hinge & LCD Cable(1170) 1 Push away the Antenna Carrier using the separating tool. Remove the Antenna Carrier. Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 85: Part Lists
Z90N Battery ass'y - 80Wh NWEBC01 EBP63421708 Webcam, Luxvision, 1Mic (1st) NWEBC01 EBP63421707 Webcam, Chicony, 1Mic (2nd) Webcam NWEBC01 EBP63421704 Webcam, Luxvision, 2Mic NWEBC01 EBP63421703 Webcam, Chicony, 2Mic Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 86 NLCD02 ABQ77466501 Front Case Assy NLCD03 EAJ64908001 17" LCD (Non-AIT) - SUS NLCD04 EAD65647002 17Z90N LCD cable Ass'y(TY3C), Non-AIT (Hinge L) NLCD05 AEH75977201 Hinge R(Z90N), Normal Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 87 460V AL Cap, Black Case, Efficicency LV6, 3pi DC Plug ASIAN POWER DEVICES INC. 80-5946-111 MODULAR JACK USB Type C 10/100 NADT03 EAD63769504 0.115M 8p,6p WHITE AWG28 N MEC IMEX INC Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 88 ID Label, EU(Spain, Italy, UK, Germany), INTEL NLAB10 MEZ68750101 ID Label, EU(Poland, Portugal, INTEL 9560) NLAB11 MEZ68548601 Iris™ graphics Plus Label NKBD03 ACQ91586302 keyskin BLACK KBD Accessory NKBD03 ACQ91586301 keyskin WHITE KBD Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 90 EAA65785801 Antenna Ass`y for 17Z90N , INPAQ (1st) NLCD06 EAA65805301 Antenna Ass`y for 17Z90N, Lux-Share (2nd) NLCD07 MBL68438301 17Z90N Cap Hinge Front Copyright © 2019-2020 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only training and service purposes.
Page 92 MBG66762902 Button, PWR, Black NKDECK03 EAB64928421 Speaker ass'y, Left NKDECK04 EAB64928422 Speaker ass'y, Right NKDECK05 EAD65612401 FFC Cable touch pad for 17Z90N Copyright © 2019-2020 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only training and service purposes.
Page 94 FAN module Thermal Module NFAN02 MED65311201 Heat pipe NRUBB05 MCQ68894601 Rubber Mainboard, 10x4.5x4.6t, White Sub Items NRUBB06 MEZ63960601 S/N label (Export model only) Copyright © 2019-2020 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only training and service purposes.
Page 95 NBOTM03 NBOTM05 NBOTM05 NBOTM05 NKBD03 NBOTM02 NPWCD01 NADT01 NADT02 NADT03 Lan Gender White: EAD63769504 / EAD64185903 Lan Gender Black: EAD63769505 / EAD64185904 Copyright © 2019-2020 LG Electronics Inc. All rights reserved. Only training and service purposes. LGE Internal Use Only...
Page 96 WW(Brazil) INLET 3P DC PIN PLUG A01006L, Black NADT02 EAY65128601 Color Body and Angle Type DC Plug(A Type, 3.0pi, 1.1pi, L9.7mm), Brazil PPB INVENTUS POWER ELETRONICA DO BRASIL LTDA Copyright © 2019-2020 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only training and service purposes.
Page 97 ID Label, EU(Poland, Portugal, INTEL 9560) NLAB11 MEZ68548601 Iris™ graphics Plus Label NKBD03 ACQ91586302 keyskin BLACK KBD Accessory NKBD03 ACQ91586301 keyskin WHITE KBD Copyright © 2019-2020 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only training and service purposes.

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