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LG RD-JS31 - User Manual

LG RD-JS31
75 pages
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DLP PROJECTOR
Website : http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.h
t
MODEL : RD-JS31
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Summary

Safety Precautions

Important Safety Notice

Essential safety notice for servicing, emphasizing component replacement and design modifications.

General Guidance

Guidelines for safe servicing, including isolation transformer use and handling of high voltage.

X-RAY Radiation

Warnings and precautions regarding X-ray radiation sources and protection measures.

Leakage Current Checks

Procedures for performing cold and hot leakage current checks to ensure safety.

General Servicing Precautions

Detailed precautions for servicing, including power disconnection, high voltage testing, and cleaning.

Electrostatically Sensitive Devices (ES Devices)

Procedures to prevent damage to ES devices from static electricity during handling and soldering.

General Soldering Guidelines

Recommended practices for soldering, including iron temperature, solder type, and tip maintenance.

Fuse and Resistor Replacement

Guidelines for replacing fuses and resistors, including spacing and component temperature.

Circuit Board Foil Repair

Procedures for repairing defective copper patterns on circuit boards using jumper wires.

Copyright Information

LG Copyright Notice

Legal notice regarding reproduction and distribution of the manual's content.

Disclaimer

Manual Content and Warranty Disclaimer

Statement on information accuracy, warranty limitations, and software use.

Manual Conventions

Explanation of Symbols and Terms

Defines conventions used in the manual, such as screen messages, notes, warnings, and cautions.

Chapter 1 System Introduction

Technical Specification

Detailed specifications of the DLP projector, including display type, brightness, and resolution.

System Block Diagram

Visual representation of the projector's internal components and their interconnections.

Optics Conceptual Drawing

Diagram illustrating the optical path and key components of the projector's optical system.

Chapter 2 Firmware Update

Setup Tool and Equipment

Lists the necessary computer, cables, and software for firmware upgrades.

Firmware Upgrading Procedure

Step-by-step instructions for updating the projector's firmware using the provided software.

Chapter 3 Machine Disassembly and Replacement

General Information Before Disassembly

Essential preparatory steps before starting any disassembly procedures, including safety.

Disassemble Lamp Module

Instructions for safely removing the projector's lamp module.

Disassemble IO Cover

Steps for removing the Input/Output cover assembly.

Disassemble Top Cover

Procedure for removing the projector's top cover.

Disassemble Front Fan

Instructions for removing the front cooling fan assembly.

Disassemble Main Board

Steps for removing the main circuit board.

Disassemble Middle Cover

Procedure for removing the middle internal cover.

Disassemble Ballast Module

Instructions for removing the ballast module.

Disassemble Optical Engine

Steps for removing the projector's optical engine assembly.

Disassemble Power Outlet Set

Procedure for removing the power outlet socket.

Disassemble Power Board Assembly

Instructions for removing the power board assembly.

Disassemble Rear Foot Assembly

Steps for removing the rear foot assembly.

Disassemble Front Foot Assembly

Instructions for removing the front foot assembly.

Exploded Overview

Diagram showing the projector's components in an exploded view for identification.

Chapter 4 Troubleshooting

Video Signal Troubleshooting

Diagnosing and resolving issues related to video input signals and display.

Operation Function Troubleshooting

Resolving problems with the projector's operational functions, including remote and button failures.

Power Source Troubleshooting

Diagnosing and fixing issues related to the projector's power supply and startup.

Function Test and Alignment

Procedures for testing and aligning projector functions after repair or maintenance.

Test Display Modes and Patterns

Information on various display modes and patterns used for testing projector performance.

Compatible Modes

List of compatible video signal resolutions, frequencies, and sizes for testing.

Function Test Display Pattern

Details specific BMP files and procedures for visual testing of projector output.

Chapter 5 Connector Information

Introduction to Connectors

Explains the purpose of the connector information section for board diagnostics.

Main Board Summary

Overview of connectors on the main board, including their general function.

Power Board Summary

Overview of connectors on the power board, including their general function.

Ballast Board Summary

Overview of connectors on the ballast board, including their general function.

Main Board Locations

Detailed pin assignments and locations for main board connectors.

IR Connectors (CN1, CN7)

Pinout and description for the IR receiver connectors.

Fan Connectors (CN3, CN4, CN5)

Pinout and description for the fan control connectors.

Ballast Control Connector (J1)

Pinout and description for the ballast control connector.

Keypad Control Connector (CN2)

Detailed pin assignments for the keypad control connector.

Thermal Connector (J2)

Pinout and description for the thermal sensor connector.

Video & S-Video IN Connectors (J3, J15)

Pinout and description for video and S-video input connectors.

Video Connector (CON2)

Pinout and description for the video output connector.

S-Video Connector (CON3)

Pinout and description for the S-video output connector.

D-SUB Connector (CON1)

Pinout and description for the D-SUB analog RGB input connector.

Phone jack Stereo-R Connector (J7)

Pinout and description for the stereo audio output connector.

Color Wheel Connector (J8)

Pinout and description for the color wheel motor connector.

Power Supply Connector (J9)

Pinout and description for the main power input connector.

USB Connector (JP1)

Pinout and description for the USB data connector.

CW Index Connector (JP3)

Pinout and description for the CW index connector.

Firmware Debug Connector (JP4)

Pinout and description for the firmware debugging interface.

Power Board Connector Details

Overview and pinouts for connectors on the power board.

Power Board CN201, CN301 Connectors

Details for +380V output and DC output connectors on the power board.

Ballast Board Connector Details

Overview and pinouts for connectors on the ballast board.

Lamp Signal Connector (W03)

Pinout and description for the lamp signal connector.

380 V Connector (CN100)

Pinout and description for the 380V DC connector on the ballast board.

Chapter 6 Replacement Parts List

RPL Overview and Notes

Explains the Replacement Parts List (RPL) and ordering procedures for FRU parts.

Part List (Items 1-10)

Lists part numbers and names for components 1 through 10.

Part List (Items 11-20)

Lists part numbers and names for components 11 through 20.

Part List (Items 21-30)

Lists part numbers and names for components 21 through 30.

Part List (Items 31-33)

Lists part numbers and names for components 31 through 33.

Chapter 7 LED Indicator for RD-JS31

LED Indicator Descriptions

Explains the meaning of different LED colors and blinking patterns for status indication.

LG RD-JS31 Specifications

General IconGeneral
BrandLG
ModelRD-JS31
CategoryProjector
LanguageEnglish

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