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LG SJ4Y Service Manual

LG SJ4Y
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3-3
Copyright © 2017 - 2019 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
DSP
MAIN/AMP PCB
Micom
27 MHz
MTK_RST/TX/RX
DDR3
DCDCs
P_CTRL
Optical In
Wireless
Module 1, 2
Serial
Flash
Serial
Flash
SPI
WL_MUT/RST/INT/MSG_RDY/I2C
SPI
USB
(Playback)
HDMI IN
HDMI OUT
BT_SPDIF
KEY
FL 40 W
AMP
TL 20 W
PWM_RST
MUTE
I2C_DAT
I2C_CLK
M_BCK/LRCK/DATA0,1,2
FR P,N /
TWR P,N
PWM_DATA2/LRCK/BCK
Potable in
Analog_L /R
ADC
PTB_DET
PWM IC
AMP
FL 40 W
LPF
TL 20 W
FL P,N /
TWL P,N
Key PCB
Serial Flash
SPI
Adapter
25 V
Wireless
Active Woofer
200 W
Rear SPK
120 W
Front PCB
Dot LED
(5ea)
IR-Receiver
BT_UART
SPDIF
USB1+/-
TMDS/HPD/I2C/ARC/CEC
TMDS/RX_HPD/I2C
/PWR5V/CEC
BT_RESET/STANBY
EMERGENCY/WAKE
I2C/HPD/CEC/EDID_SW
BLOCK DIAGRAMS
1. SYSTEM BLOCK DIAGRAM

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LG SJ4Y Specifications

General IconGeneral
Audio decodersDolby Digital
RMS rated power300 W
Audio output channels2.1 channels
Audio Return Channel (ARC)Yes
Soundbar speaker RMS power120 W
Subwoofer typeActive subwoofer
Receiver includedNo
Power consumption (standby)0.5 W
Power consumption (typical)20 W
HDMI in1
HDMI version1.4
Bluetooth version4.0
Number of HDMI outputs-
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Connectivity technologyWired & Wireless
Digital audio coaxial in0
Apple docking compatibilityNot supported
Product colorBlack
Consumer Electronics Control (CEC)SimpLink
Weight and Dimensions IconWeight and Dimensions
Depth86.3 mm
Width889 mm
Height56 mm
Subwoofer depth252 mm
Subwoofer width171 mm
Subwoofer height320 mm
Subwoofer weight4200 g

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