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LG S75A1-D User Manual

LG S75A1-D
91 pages
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SERVICE MANUAL
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
Internal Use Only
Website http://biz.lgservice.com
SMART Hi-Fi AUDIO
Wireless Multi-room Sound Bar
MODEL: LAS751M (LAS751M, S75A1-D)
MODEL: LAS751M
(LAS751M, S75A1-D)
P/NO : AFN77277045 AUGUST, 2015

Table of Contents

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LG S75A1-D Specifications

General IconGeneral
Speaker TypeSound Bar
Total Power Output380W
Number of Channels3.1.2
SubwooferWireless
BluetoothYes
Dolby AtmosYes
DTS:XYes
Optical InputYes
Wi-FiYes
Wall MountableYes
Remote ControlYes
HDMI Output1

Summary

SECTION 1 SUMMARY

Product Safety Servicing Guidelines

Guidelines for safe servicing of audio products, covering precautions and installation tips.

Servicing Precautions

Detailed precautions for servicing, including general safety and handling of sensitive components.

Wireless Subwoofer Connection

Instructions and troubleshooting for connecting the wireless subwoofer, including LED status.

Wireless Factory Reset and Pairing

Procedures for performing a wireless factory reset and pairing the subwoofer with the main unit.

SECTION 2 ELECTRICAL

Electrical Troubleshooting Guide

Flowcharts for diagnosing electrical problems related to power, Wi-Fi, AMP/PWM, Bluetooth, and connectivity.

Circuit Voltage Chart

A table listing key ICs, their types, expected voltages, and measured voltages.

SECTION 4 WIRELESS SUBWOOFER PART

One Point Repair Guide

Troubleshooting guide for wireless subwoofer issues, covering power, connection, and voltage checks.

Circuit Diagrams

Detailed schematics for the woofer SMPS, amplifier, and key circuits.

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