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LG S95A1-D User Manual

LG S95A1-D
93 pages
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SMART Hi-Fi AUDIO
Wireless Multi-room Sound Bar
SERVICE MANUAL
MODEL: LAS950M
(LAS950M, S95A1-D)
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
Internal Use Only
MODEL: LAS950M (LAS950M, S95A1-D)SERVICE MANUAL
P/NO : AFN77195062 JANUARY, 2016

Table of Contents

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LG S95A1-D Specifications

General IconGeneral
BrandLG
ModelS95A1-D
CategorySpeaker System
LanguageEnglish

Summary

Section 1: Summary

Product Safety Servicing Guidelines

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

Servicing Precautions

Essential precautions for servicing, including general, insulation, and ESD device handling.

Wireless Subwoofer Connection

Instructions for connecting the wireless subwoofer, including LED indicators and pairing.

LAN Update Guide

Step-by-step guide for updating the device firmware via LAN using MP tool.

Software Update Guide

Procedures for updating software via USB and the dedicated APP.

Wireless Factory Reset & Pairing

Steps to perform wireless factory reset and re-pairing of the main set and subwoofer.

Hidden Mode

Accessing and using hidden modes for service functions like reset and option code.

Version Check

Procedure to check the system version and firmware details using the MP tool.

Option Edit Guide

Instructions for editing product options via LAN using MP tool or remote control.

Specifications

Technical specifications of the product, including power, dimensions, and connectivity.

Section 2: Electrical

One Point Repair Guide

Troubleshooting guide for common no-power, no-booting, and no-sound issues.

Electrical Troubleshooting Guide

Detailed electrical troubleshooting flowcharts for various power supply and output problems.

Waveforms of Major Check Point

Visual examples of essential waveforms for diagnosing audio and digital signal issues.

Wiring Diagram

Overview of internal component connections and their locations within the main unit.

Block Diagrams

High-level functional block diagrams illustrating the system architecture.

Circuit Diagrams

Detailed schematics for various circuit sections like SMPS, MICOM, MPEG, DSP, and HDMI.

Circuit Voltage Chart

Reference table listing expected voltage specifications for key ICs, capacitors, and connectors.

Printed Circuit Board Diagrams

Visual layout diagrams of the printed circuit boards for SMPS, Main, HDMI, Front, and Key sections.

Section 3: Cabinet & Main Chassis

Disassembly Instructions

Step-by-step guide for safely disassembling the main unit's cabinet and internal components.

Exploded Views: Main Set Section

Exploded view detailing the parts and assembly of the main soundbar unit.

Exploded Views: Wireless Subwoofer Section

Exploded view illustrating the components and structure of the wireless subwoofer.

Exploded Views: Packing Accessory Section

List and illustration of all accessories included in the product packaging.

Section 4: Wireless Subwoofer Part

One Point Repair Guide

Troubleshooting steps for common issues in the wireless subwoofer, focusing on no power and error conditions.

Circuit Diagrams

Schematics for the woofer's SMPS, amplifier, and key circuits, detailing component connections.

Printed Circuit Board Diagrams

Visual layout of the woofer's SMPS, amplifier, and key circuit boards for component identification.

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