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JVC 250 User Manual

JVC 250
190 pages
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SERVICE
MANUAL
Model 250 Projector
Phone: (760) 929-5300
Fax: (760) 929-5410
2310 Camino Vida Roble
Carlsbad, California 92009

Table of Contents

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JVC 250 Specifications

General IconGeneral
Brightness2500 ANSI lumens
Contrast Ratio400:1
Lamp Life2000 hours
Weight3.3 kg
Native Resolution1024x768 (XGA)
Resolution1024x768 (XGA)
InputsComposite video, S-Video

Summary

Introduction to the Model 250 Projector

Safety Precautions for Introduction

Read safety chapter before performing any adjustments or maintenance.

Electrical System Details and Maintenance

Electrical Safety Precautions

Critical safety warnings for working with high voltages and components.

Projector Power Supply Units

Description of Low Voltage, Arc Lamp, and High Voltage power supplies.

Optical Path and Light Generation

Arc Lamp Operation and Alignment

Details on arc lamp functions, inputs, operation, and alignment.

Image Light Amplifier (ILA) Functionality

Modulation of polarized light by CRT images via liquid crystal layer.

Projector Electronics and Control Systems

Electronics System Safety Precautions

Safety warnings for working with projector electronics and high voltages.

System Controller PCB Functions

Controls power, monitors faults, and manages communication between PCBs.

Video Processor PCB Functions

Handles video signal input, brightness, contrast, and gamma correction.

Horizontal and Vertical Deflection Control

Drives horizontal and vertical deflection coils for CRT raster scan.

Projector Troubleshooting and Diagnostics

Troubleshooting Safety Precautions

Essential safety warnings before performing troubleshooting procedures.

Understanding Projector Error Codes

List and explanation of software and hardware error codes.

Common Projector Problems and Solutions

Guide to common problems, checks, possible solutions, and related sections.

Software Management and Communication

Procedure for Updating Projector Software

Step-by-step guide for updating Boot Manager and System Software.

Projector Replacement Parts and Spares

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