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LG SJ5 User Manual

LG SJ5
69 pages
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SERVICE MANUAL
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
Internal Use Only
Wireless Sound Bar
JANUARY, 2017P/NO : AFN77558564
MODEL: SJ5 (SJ5, SPJ5-W)
MODEL: SJ5
(SJ5, SPJ5-W)

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LG SJ5 Specifications

General IconGeneral
FM radioNo
Product colorSilver
TV stand usage-
Wall mountableYes
Audio formats supportedFLAC, LPCM, MP3, OGG, WAV, WMA
Maximum screen size43 \
Subwoofer dimensions (WxHxD)171 x 252 x 320 mm
Package depth223 mm
Package width1005 mm
Package height373 mm
Package weight9600 g
Audio decodersDTS Digital Surround, Dolby Digital
RMS rated power320 W
Audio output channels2.1 channels
Impedance4 Ω
Tweeter diameter20 mm
Soundbar speaker RMS power120 W
Signal-to-Noise Ratio (SNR)82 dB
Total Harmonic Distortion (THD)10 %
Subwoofer sensitivity85 dB
Subwoofer connectivityWireless
HDMI version1.4
Bluetooth version4.0
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
AC input voltage110-240 V
AC input frequency50 - 60 Hz
Power consumption (typical)22 W
Apple docking compatibilityNot supported
Harmonized System (HS) code85182200
Weight and Dimensions IconWeight and Dimensions
Depth85 mm
Width950 mm
Height55 mm
Soundbar weight2700 g
Subwoofer weight4200 g

Summary

Section 1 General

ESD Precautions

Safety guidelines to prevent damage from electrostatic discharge.

Name of Each Component

Identifies and locates components on the front and rear panels of the soundbar.

Wireless Subwoofer Connection

Procedure for establishing and troubleshooting the wireless connection between units.

Hidden Key Mode

Details specific button combinations to access hidden operational modes.

Software Update Guide

Instructions for updating the device firmware using USB or the mobile app.

Specifications

Lists technical characteristics, power requirements, and dimensions of the product.

Section 2 Cabinet & Main Chassis

Disassembly Instructions

Step-by-step procedures for dismantling the main unit and subwoofer.

Exploded Views

Illustrations showing disassembled parts for the main unit, subwoofer, and accessories.

Section 3 Electrical

Wiring Diagram

Schematic showing electrical interconnections between major assemblies and connectors.

Block Diagrams

Functional diagrams illustrating system architecture and power distribution.

One Point Repair Guide

Troubleshooting guide for common faults with specific diagnostic steps.

Waveforms of Major Check Point

Graphical representations of expected signals for diagnostics.

Circuit Voltage Chart

Table listing IC voltage specifications, measured values, and temperature ranges.

Printed Circuit Board Diagrams

Top and bottom views of the main, front, and key PCBs for component identification.

Section 4 Wireless Subwoofer Part

Wiring Diagram

Schematic illustrating electrical connections specific to the wireless subwoofer.

Block Diagram

Functional overview of the wireless subwoofer's internal components and signal flow.

One Point Repair Guide

Troubleshooting common issues related to the wireless subwoofer's operation.

Waveforms of Major Check Point

Oscilloscope readings for critical signals within the wireless subwoofer.

Circuit Voltage Chart

Table of voltage specifications and measurements for subwoofer ICs.

Printed Circuit Board Diagrams

Layouts of the subwoofer's SMPS & AMP circuit board.

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