JVC 250 User Manual

Model 250 Projector Service Manual iii
Table of Contents
Safety Information
.................................................................................... v
Chapter 1 Introduction
1.1 Safety...................................................................................................... 1-1
1.2 Updates................................................................................................... 1-2
1.3 Acronyms ............................................................................................... 1-2
Chapter 2 System Description
2.1 Introduction............................................................................................2-1
2.2 Electrical Section.................................................................................... 2-2
2.3 Optical Section....................................................................................... 2-3
2.4 Electronic Section ..................................................................................2-5
2.5 Miscellaneous Items...............................................................................2-7
Chapter 3 Electrical
3.1 Safety...................................................................................................... 3-1
3.2 Incoming Power Circuit .........................................................................3-2
3.3 Power Supplies....................................................................................... 3-3
3.4 Igniter Assembly ....................................................................................-15
Chapter 4 Optical
4.1 Arc Lamp................................................................................................ 4-2
4.2 Optical Path............................................................................................ 4-7
4.3 ILA
®
....................................................................................................... 4-12
4.4 Relay Lenses........................................................................................... 4-19
4.5 Projection Lens.......................................................................................4-19
Chapter 5 Electronic
5.1 Safety...................................................................................................... 5-1
5.2 Introduction............................................................................................5-2
5.3 System Controller PCB.......................................................................... 5-3
5.4 Video Processor PCB............................................................................. 5-11
5.5 Raster Timing Generator PCB ............................................................... 5-16
5.6 Horizontal Vertical Deflection PCB ......................................................5-21
5.7 Convergence Deflection PCB ................................................................ 5-28
5.8 Scan Reversal PCB................................................................................. 5-34
5.9 Video Amplifier PCB.............................................................................5-43
5.10 CRT/Yoke Assemblies.......................................................................... 5-51
5.11 VICs ...................................................................................................... 5-58
5.12 Backplane.............................................................................................. 5-74
Chapter 6 Miscellaneous Items
6.1 Projector Covers.....................................................................................6-1
6.2 Electronics Module Tilt-up .................................................................... 6-2
6.3 Ventilation.............................................................................................. 6-3
6.4 Air Filters ...............................................................................................6-4

JVC 250 Specifications

General

Brand	JVC
Model	250
Category	Projector
Language	English