LG DA-3520 User Manual

- 1-1 -
CONTENTS
SECTION 1. GENERAL
• SERVICING PRECAUTIONS
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1-2
• ESD PRECAUTIONS
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1-4
• SPECIFICATIONS
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1-5
• LOCATION OF CUSTOMER CONTROLS
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1-6
SECTION 2. AUDIO PART
• ELECTRICAL TROUBLESHOOTING GUDIE
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2-1
• DVD PLAYER PROGRAM DOWNLOAD METHOD
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2-5
• WAVEFORMS OF MAJOR CHECK POINT
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2-7
• INTERNAL BLOCK DIAGRAM OF IC’s
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2-8
• IC VOLTAGE SHEET
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2-13
• BLOCK DIAGRAM
....................................................................................................................................
2-15
• SCHEMATIC DIAGRAMS
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2-17
• PRINTED CIRCUIT DIARGAMS
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2-25
SECTION 3. DVD PART
• ELECTRICAL TROUBLESHOOTING GUIDE
...........................................................................................
3-1
• BLOCK DIAGRAMS
.....................................................................................................................................
3-8
• SCHEMATIC DIAGRAMS
..........................................................................................................................
3-11
• WAVEFORMS
...........................................................................................................................................
3-19
• PRINTED CIRCUIT DIAGRAM
.................................................................................................................
3-21
SECTION 4. MECHANSIM
..............................................................................................................
4-1
SECTION 5. EXPLODED VIEWS
...................................................................................................
5-1
SECTION 6. SPEAKER PART
........................................................................................................
6-1
SECTION 7. REPLACEMENT PARTS LIST
..................................................................................
7-1

LG DA-3520 Specifications

General

DVD Player / Recorder Type	DVD player
Playable File Formats	MP3, WMA, JPEG
Built-in Decoders	Dolby Digital, DTS
Output Power	330 W
Radio Tuner	Yes
Channels	5.1
Bluetooth	No
USB	Yes
HDMI	Yes
Optical Input	Yes
FM Radio	Yes
Subwoofer	Yes
Type	Home Theater System
Number of Speakers	5.1
Playable Disk Types	CD, DVD

Summary

Servicing Precautions

Pick-Up Handling Notes

Compact Disc Player Repair Precautions

Electrostatic Discharge (ESD) Precautions

Product Specifications

Audio Part Troubleshooting Guide

Audio Micro-Computer Circuit Diagnosis

Troubleshooting steps for the audio micro-computer circuit.

Front Circuit Troubleshooting (Part 1)

Diagnostic steps for the front circuit board, covering various components and connections.

Front Circuit Troubleshooting (Part 2)

Further diagnostic steps for the front circuit board.

DVD Player Program Download Method

Firmware Upgrade via Disc

IC Voltage Sheet

Specific IC Voltage Measurements

System Block Diagram

Power Schematic Diagram

"-COM and Front Circuit Schematics

Digital Amplifier Part Schematic

Digital Audio Processing Schematic

DVD Part Troubleshooting Guide

Picture and Disc Error Troubleshooting

Diagnostic steps for picture abnormalities and disc read errors.

MPEG Circuit Troubleshooting

Flowchart for diagnosing issues related to the MPEG playback circuit.

RF/Servo Circuit Troubleshooting

Disc Tray and SLED Driver Issues

Troubleshooting for tray open/close and SLED driver problems.

Focus and Disc Rotation Issues

RF Signal and Eye-Pattern Checks

RF/CD/DVD DSP/Servo Block Diagram

MPEG System Block Diagram

Micro-Computer (-COM) Block Diagram

Drive and RF Schematic Diagram

DVD DSP Schematic Diagram

Micro-Computer (-COM) Schematic Diagram

MPEG Schematic Diagram

Deck Mechanism Parts Location