LG S90QY Service Manual
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LG S90QY Service Manual

LG S90QY Service Manual

Wi-fi sound bar
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Wi-Fi SOUND BAR
SERVICE MANUAL
MODEL: S90QY
(S90QY, SPQ8-W)
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
P/NO : AFN30076008
FEBRUARY, 2022
"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 for 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 SECTION 1 ..GENERAL SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..WIRELESS SUBWOOFER PART SECTION 5 ..REAR KIT PART (OPTION) Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 3: Table Of Contents

    4. OOBE UPDATE (GOOGLE HOME APP) ....................1-16 HIDDEN KEY MODE ............................1-19 NAME OF EACH COMPONENT ........................1-20 SPECIFICATIONS ............................1-22 COMPARISON LIST ............................1-23 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 4: Product Safety Servicing Guidelines For Audio Products

    When servicing this product, under no circumstances should the original design be modified or altered without permission from LG Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs.

  • Page 5: Servicing Precautions

    Note 1: Accessible Conductive Parts include Metal panels, tricity sufficient to damage an ES device.) Input terminals, Earphone jacks,etc. Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 6: Connecting The Wireless Subwoofer

    LED on the back of the wireless subwoofer. LED Color Status Blinking green Connecting in progress Green Connected successfully Bad connection, or the subwoofer is in standby Power cable not connected Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 7: Connecting The Rear Speakers To The Wireless Receiver (Spq8-S, Sold Separately)

    1 m (3.3 ft) between the sound bar or the wireless receiver and any peripheral devices that generate strong electromagnetic waves (ex. wireless routers, microwave ovens, etc.). Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 8: Woofer & Rear Pairing Method

    < Front side of the Rear kit > < Back side of the Rear kit > < Remote control > < Subwoofer > Paring Key Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 9: Mounting The Product To A Wall

    Align the center of the wall-mounted TV with the part marked “TV Center” in the installation guide. 3) With a pen, mark screw holes on the installation guide where the wall brackets will be attached. Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 10 8) Firmly affi x the product to the wall brackets using the screws provided. Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 11: Firmware Update Guide

    Caution : • Take care not to power off during update. • Do format USB memory before update (FAT32 fi le system). 1-10 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 12: Usb Update

    Step 6. Press Function key to change function to USB. Verify whether USB function is or not by VFD. 1-11 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 13 <S90Q VFD Display in Update> ※ The numbers in VFD display of wireless modules will increase in progress as progress percent from 00 to 100. 1-12 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 14 Wireless Rear Tx BR205210 Wireless Rear R Rx T2001075 Touch < S90Q VFD Display in Version Display> 3) Compare the version VFD shows and you updated. 1-13 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 15 3. OOBE update (LG App) Step 1. Prepare S90Q main unit and Smart Phone with “LG Sound Bar” App. In setting up the network in OOB(out of the box), S90Q will be updated to the latest version automatically. Step 2. Power on S90Q main unit.

  • Page 16: Oobe Update (Lg App)

    B-UPD scroll PLEAS E WAIT scroll WI-FI Step 6. At the end of the update step, LG App shows the S90Q on device list. 1-15 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 17 Please use LG Wi-Fi Speaker App if you could. Step 1. Prepare S90Q main unit and Smart Phone with “Google Home” App. (LG Wi-Fi Speaker App recommended) In setting up the network in OOB(out of the box), S90Q will be updated to the latest version automatically.

  • Page 18: Oobe Update (Google Home App)

    If the S90Q is already the latest version, network setup will be fi nish without update. M-UPD scroll B-UPD scroll PLEAS E WAIT scroll WI-FI 1-17 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 19 OOBE update (Google Home App) Step 6. At the end of the update step on Google Home App, the network setup is complete. 1-18 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 20: Hidden Key Mode

    • Woofer (Rear Speaker) must Power Off before input those keys. • Woofer and Rear Speaker can be reset by pressing reset button on each unit. 1-19 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 21: Name Of Each Component

    It allows you to pair your Bluetooth device such as a smartphone to this product for three minutes. Wi-Fi It goes to the Wi-Fi function directly. Built-in microphone This uses when operating the AI room calibration on LG Sound Bar app. Remote Control Receiver This receives wireless signals from the remote control. Status display Options such as input mode and volume are displayed in text.
  • Page 22 These buttons are used to adjust the settings of the convenient functions. Play/Pause If you play or pause a song, press this button. Settings It allows you to adjust the settings of this product. 1-21 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 23: Specifications

    Approx. 100.0 mm x 140.0 mm x 100.0 mm (3.9 inch x 5.5 inch x 3.9 inch) • Design and specifications are subject to change without notice. 1-22 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 24: Comparison List

    *APR/VLLM apply, Spotiry Connect Main IC MT8531 (MTK) MT8532 (MTK) AMP IC TPA3118 (TI) TPA3221 (TI) ELECTIRCAL Earc IC Sil9437 (In SOC) Micom A33G526 (ABOV)  1-23 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 25 1-24 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 26 2. HOW TO DISASSEMBLE THE SUBWOOFER ..................2-5 EXPLODED VIEWS ............................2-7 1. MAIN UNIT (S90Q) SECTION ........................2-7 2. WIRELESS SUBWOOFER (SPQ8-W) SECTION ..................2-9 3. PACKING ACCESSORY SECTION ....................... 2-11 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 27: Disassembly Instructions

    • Must apply screw torque 4.5~5.0 kgf, when you assemble again. 2) Disassemble Main PCB and Frame Disassemble cable - 5 point 3) Disassemble Main PCB Case Top Frame Disassemble screw - 1 point Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 28: How To Disassemble The Main Unit

    HOW TO DISASSEMBLE THE MAIN UNIT 4) Disassemble Chamber Disassemble screws – 9 point 5) Disassemble Main PCB From Chassis Disassemble screws - 11 point Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 29 Disassemble Front PCB screws : 2 EA 7) Disassemble of Module Holders (Wi-Fi + BT Holder / Wireless / Rear Wireless) Disassemble screws : 2 EA Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 30: How To Disassemble The Subwoofer

    Pull out the rear panel assembly using power cord and disconnect the SPK cable. SPK cable Î 3) PCB Remove 5 EA screws and 1 FFC cable. Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 31 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 32: Exploded Views

    PCB Assembly,Sub S90Q Center Network Cable S90Q PCB Assembly,Sub CN901 EAD63467402 Harness,Single SMH250-08 To B2011H02-8_L=110M Harness,Single CABLE3 SMPS LCD01 FRONT CABLE1 MAIN CABLE5 WIRELESS A80L CABLE4 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 33: Wireless Subwoofer (Spq8-W) Section

    Cable,FFC 26P050D-H01-0F01A-T 70 70MM 0. Cable,FFC(26p) EAG63233208 Socket,Power DAC-18JN08 2P STRAIGHT WIRE BK Power Socket MDQ66754501 Frame PRESS SECC 1.0 SPQ8-W PRESS Fr Frame 2-10 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 34: Packing Accessory Section

    SPK SK9Y/SK10Y Wallmount Brack Wall Bracket AGG75620751 Packing Assembly LAS550H silver new screw + bag Screws AKB76038001 Remote Controller Assembly RAV21 Global_Hansung 21y(L-con Remote Control 2-11 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 35 2-12 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 36 2. MAIN P. C. BOARD DIAGRAM ......................3-21 3. AMP P. C. BOARD DIAGRAM ......................3-25 4. FRONT P. C. BOARD DIAGRAM ......................3-29 5. TOUCH P. C. BOARD DIAGRAM ......................3-29 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 37: Wiring Diagram

    WIRING DIAGRAM Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 38: Block Diagram

    BLOCK DIAGRAM Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 39: One Point Repair Guide

    DGND R3122 27K R3135 L3032 10uH R3121 C3165 C3164 100nF 10uF /16V /10V DGND IC3025 DGND DGND IC3025 IC3025 < MAIN board top view > Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 40 /10V /10V /16V R3134 R3130 IC3023 (1%) DGND @Optio VOUT = 0.6 x (1+150K/33K) = 3.327V DGND IC3023 IC3023 < MAIN board top view > Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 41 TP1037 DGND LCD_DAT LCD_DAT TP1038 LCD_BL LCD_BL TP1039 LCD_CLK LCD_CLK GLED GLED R1096 TP1030 DGND TP1029 TP1029 TP1033 TP1033 < MAIN board bottom view > Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 42: Sound

    DF3D6.8MS DF3D6.8MS 12507WS-H12G TP2053 22uF 1.25mm, Straight type close to connecter DGND DGND TP2045 TP2045 TP2051 TP2051 TP2046 TP2046 < MAIN board bottom view > Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 43 OPT_IN C7179 C7181 C7178 100nF 10uF C7238 100nF optical_buffer PGND PGND R7152 PGND R7141 R7141 JK7002 JK7002 L7010 L7010 < AMP board top view > Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 44 C3051 C3057 C3064 /16V /10V R3045 10uF 10uF 100nF /10V /10V /16V DGND HDMI_PCTRL R3036 DGND DGND IC3008 IC3008 < MAIN board bottom view > Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 45 MT8532_USB_DP_P1 TP2044 USB JACK_1ST D2000 DF3D6.8MS DGND DGND TP2041 TP2041 JK2000 JK2000 < MAIN board top view > < MAIN board bottom view > 3-10 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 46: Protection Error

    TP7005 TP7014 CN7002 SURROUND L- FRONT R+ TP7015 CN7001 FRONT R- CN7003 CN7003 CN7003 CN7002 CN7002 CN7001 CN7001 < AMP board top view > 3-11 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 47 PGND PGND IC7003 IC7003 IC7004 IC7004 IC7001 IC7001 IC7002 IC7002 C7215 C7215 C7216 C7216 C7204 C7204 C7205 C7205 < AMP board top view > 3-12 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 48 PGND PGND IC7003 IC7003 IC7004 IC7004 IC7001 IC7001 IC7002 IC7002 C7215 C7215 C7216 C7216 C7204 C7204 C7205 C7205 < AMP board top view > 3-13 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 49: Waveforms Of Major Check Point

    XTALO 12pF R5063 @Optio R6044 C6030 X5000 40MHZ (1%) 15pF AR26010806 SX-32 X6000 @pinCo @pinCo C6033 @pinCo @pinCo C5076 12pF XTALI 12pF DGND DGND 3-14 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 50: Remote Control

    Fig 2-3. Remote Control Low Timing RCF100 H=3.2mm ,SMD,Vertical IR RECEIVER 3.3VA RF113 CNF100 CF111 CF109 CF112 100pF 100nF 10uF TPF105 TPF106 DF101 Z02W3.9V DGND 3-15 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 51: Optical

    Fig 3-2. Optical Opt In Opt Det 3.3VA IC2000 R2007 4.7K USB_PCTRL R2008 C2000 100nF OPT_IN R2000 OPT_IN DGND DGND R2001 OPT_DET C2050 DGND 3-16 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 52: Printed Circuit Board Diagrams

    PRINTED CIRCUIT BOARD DIAGRAMS 1. SMPS P. C. BOARD DIAGRAM (TOP VIEW) SMPS PCB SVC ASSEMBLY P/N EBR34246101 3-17 3-18 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 53: Smps P. C. Board Diagram

    (BOTTOM VIEW) NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock. SMPS PCB SVC ASSEMBLY P/N EBR34246101 3-19 3-20 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 54 2. MAIN P. C. BOARD DIAGRAM (TOP VIEW) MAIN PCB SVC ASSEMBLY P/N EBR37091802 3-21 3-22 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 55: Main P. C. Board Diagram

    MAIN P. C. BOARD DIAGRAM (BOTTOM VIEW) MAIN PCB SVC ASSEMBLY P/N EBR37091802 3-23 3-24 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 56 3. AMP P. C. BOARD DIAGRAM (TOP VIEW) AMP PCB SVC ASSEMBLY P/N EBR37085401 3-25 3-26 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 57: Amp P. C. Board Diagram

    AMP P. C. BOARD DIAGRAM (BOTTOM VIEW) AMP PCB SVC ASSEMBLY P/N EBR37085401 3-27 3-28 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 58: Front P. C. Board Diagram

    (BOTTOM VIEW) FRONT PCB SVC ASSEMBLY P/N EBR36717101 5. TOUCH P. C. BOARD DIAGRAM (TOP VIEW) (BOTTOM VIEW) TOUCH PCB SVC ASSEMBLY P/N EBR34529401 3-29 3-30 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 59 3-31 3-32 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 60 3. PVDD ..............................4-7 4. PWM ............................... 4-8 5. LED ................................. 4-9 PRINTED CIRCUIT BOARD DIAGRAMS ....................... 4-11 1. SUBWOOFER P. C. BOARD ........................ 4-11 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 61: Wiring Diagram

    WIRING DIAGRAM FFC,26P From Wireless module Speaker Cable,2P From 2P, Power Cord Speaker Unit Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 62: Block Diagram

    BLOCK DIAGRAM PAIRING 24.576MHz SW+ /- PWM_RST/SCL/SDA BCK/LRCK/ADATA P_CTRL PWM IC From Wireless module Con. 26P SPI_CS SPI_DO/DI SPI_WP SPI_CLK Serial Flash Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 63: One Point Repair Guide

    2) If 3.3 VA is not checked at the point, then find 12 VA at pin3 of WIC705. 3) 1), 2) is NG, replace subwoofer board WIC705 WIC705 12VA 12VA 3.3 VA 3.3 VA < Subwoofer board top view > Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 64: Wireless Connection

    2-2-3) The main set and the subwoofer are factory reset mode, then power on. 3.3 VA 3.3 VA WCN701 WCN701 (Wireless Module Connection Check) (Wireless Module Connection Check) < Subwoofer board top view > Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 65: Waveforms Of Major Check Point

    +3.3VA WIC702 WR728 WC723 100nF SPI_CS DGND NC/SIO3 SO/SIO1 SPI_DO SCLK WP#/SIO2 SPI_WP SPI_CLK WR729 SI/SIO0 SPI_DI EAN63127201 DGND FIG 2. VCC, CS#, CLK, DO Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 66: Pvdd

    +12VA PWRGD RT/CLK WC758 [EP] WR750 WC756 WR756 390K WR745 WC739 2.4K 4.7nF 120K (1%) P_SENSE 3.3V 10nF WR751 DGND 150K FRQ:1MHz DGND DGND DGND Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 67: Pwm

    EXT_MUTE : ACTIVE HIGH -> MUTE WR779 ADC_MCLK PWM_CH2_M ADC_BCK PWM_CH1_P ADC_LRCK PWM_CH1_M ADC_SDIN WC730 100nF VDD_IO VOUT12_REG1 WC703 100nF DGND DGND I2S FROM MODULE Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 68: Led

     Red LED  Green LED +3.3VA WQ701 WLD701 @Optio WC721 LED_RED WR731 WC728 10nF WR730 100nF DGND WQ702 DGND LED_GREEN WC722 10nF DGND DGND Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 69 4-10 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 70: Printed Circuit Board Diagrams

    (BOTTOM VIEW) NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock. SUBWOOFER PCB SVC ASSEMBLY P/N EBR35847001 4-11 4-12 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 71 4-13 4-14 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.
  • Page 72 2. WIRELESS CONNECTION ........................5-5 WAVEFORMS OF MAJOR CHECK POINT ...................... 5-6 PRINTED CIRCUIT BOARD DIAGRAMS ......................5-7 1. REAR KIT P. C. BOARD........................... 5-7 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 73: Wiring Diagram

    WIRING DIAGRAM SPEAKER TERMINAL_4 26P, FFC From Wireless Module Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 74: Block Diagram

    BLOCK DIAGRAM Serial Flash Main Device PWM IC PWM_ADATA AMP IC Wireless AMP PDN Module AMP SD/OTW LED RED/GREEN Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 75: One Point Repair Guide

    2) If 3.3 VA is not checked at the point, then find 12 VA at pin3 of WIC705. 3) 1), 2) is NG, replace rear kit board 3.3 VA 3.3 VA WIC705 WIC705 12VA 12VA < Rear kit board top view > Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 76: Wireless Connection

    2-2-3) The main set and the rear kit are factory reset mode, then power on. 3.3 VA 3.3 VA WCN701 WCN701 (Wireless Module Connection Check) (Wireless Module Connection Check) < Rear kit board top view > Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 77: Waveforms Of Major Check Point

    DGND WTP719 LED CTRL WR718 RED_LED LED_RED WTP720 WR719 LED_GREEN GREEN_LED +3.3VA WL701 PZ1608U221-1R4TF WTP721 3.3VA 04-6263-226-000-894+ WC724 WU701 WC705 100nF 100uF 10pF WTP722 DGND Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 78: Printed Circuit Board Diagrams

    PRINTED CIRCUIT BOARD DIAGRAMS 1. REAR KIT P. C. BOARD (TOP VIEW) REAR KIT PCB SVC ASSEMBLY P/N EBR36032501 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

  • Page 79: Rear Kit P. C. Board

    (BOTTOM VIEW) NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock. REAR KIT PCB SVC ASSEMBLY P/N EBR36032501 5-10 Copyright © 2022 LG Electronics Inc. All rights reserved. Only for training and service purposes.

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