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LG S94T1-S User Manual

LG S94T1-S
145 pages
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MARCH, 2014AFN76552404:ON/P
9.1 channel Cinema Sound
3D Blu-ray
TM
/ DVD Home Theater System
SERVICE MANUAL
MODEL: BH9540TW
(BH9540TW, S94T1-S/C/W, W4-4, T2)
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
Website http://biz.lgservice.com
Internal Use Only
MODEL: BH9540TW (BH9540TW, S94T1-S/C/W, W4-4, T2)SERVICE MANUAL

Table of Contents

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LG S94T1-S Specifications

General IconGeneral
BrandLG
ModelS94T1-S
CategoryHome Theater System
Audio Channels9.1.5
Total Power Output810W
Subwoofer TypeWireless
Dolby AtmosYes
DTS:XYes
HDMI Output1
BluetoothYes
Wi-FiYes
USB Port1
Optical Input1
Streaming ServicesSpotify Connect
Supported Audio FormatsDolby Digital, DTS, LPCM
Weight (Main Unit)12.1 lbs (5.5 kg)

Summary

SECTION 1 SUMMARY

PRODUCT SAFETY SERVICING GUIDELINES

Guidelines for safely servicing audio-video products.

SERVICING PRECAUTIONS

Precautions to follow before and during service.

INITIAL SYSTEM SETUP

Step-by-step guide for initial unit setup.

HIDDEN KEY MODE

Accessing hidden modes for system diagnostics or functions.

FIRMWARE UPDATE GUIDE

Instructions for updating the unit's firmware.

NETWORK SOFTWARE UPDATE

Procedure for updating software via network connection.

SPECIFICATIONS

Detailed technical specifications of the product.

SECTION 2 ELECTRICAL

DIGITAL DISPLAY & MEDIA TRAINING MASTER

Troubleshooting guide for display and media issues.

ONE POINT REPAIR GUIDE

Specific guides for common repair issues.

ELECTRICAL TROUBLESHOOTING GUIDE

Systematic troubleshooting for electrical faults.

WAVEFORMS

Analysis of signal waveforms for system diagnostics.

CIRCUIT DIAGRAMS

Detailed circuit schematics for troubleshooting.

CIRCUIT VOLTAGE CHART

Reference chart for circuit voltages in different modes.

PRINTED CIRCUIT BOARD DIAGRAMS

Diagrams showing component layout on PCBs.

SECTION 3 CABINET & MAIN CHASSIS

EXPLODED VIEWS

Visual breakdown of the unit's components.

CABINET AND MAIN FRAME SECTION

Exploded view of the main chassis and frame.

DECK MECHANISM SECTION

Exploded view of the disc playback mechanism.

SPEAKER SECTION

Exploded views of various speaker components.

CENTER SPEAKER

Exploded view of the center speaker.

FRONT/ REAR SPEAKER

Exploded views of front and rear speakers.

PASSIVE SUBWOOFER

Exploded view of the passive subwoofer.

WIRELESS RECEIVER SECTION

Exploded view of the wireless receiver unit.

SECTION 4 MT8580 F/E LOADER PART

LD CHECK GUIDE

Guide for checking Laser Diode status.

SA RESET FUNCTION

Procedure for resetting SA adjustment values.

MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION

Block diagrams and pinouts for key integrated circuits.

BLOCK DIAGRAM

Overall system block diagram.

SECTION 5 WIRELESS RECEIVER PART

WIRELESS DEVICE FIRMWARE UPDATE

Firmware update methods for wireless components.

ONE POINT REPAIR GUIDE

Troubleshooting guide for wireless receiver issues.

ELECTRICAL TROUBLESHOOTING GUIDE

Troubleshooting electrical faults in the wireless receiver.

WAVEFORMS

Analysis of audio signal waveforms for the wireless unit.

CIRCUIT DIAGRAMS

Circuit schematics for wireless receiver components.

PRINTED CIRCUIT BOARD DIAGRAMS

PCB layout diagrams for wireless receiver components.

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