Introduction - Hughes JVC Model 200 Service Manual

2.0 System Description
Contents

2.1 Introduction .............................................................................. 2-1

2.2 Optical System......................................................................... 2-2
2.3 Electronics System .................................................................. 2-7
2.4 Image Light Amplifier Technology ........................................... 2-63
2.1 Introduction
Model 200 Service Manual
2.2.1 Image Path................................................................... 2-2
2.2.2 Arc Lamp Light Path .................................................... 2-4
2.3.1 General Description ..................................................... 2-7
2.3.2 Power Supplies ............................................................ 2-8
2.3.3 Video Input Cards ........................................................ 2-14
2.3.4 Video Processor PCB .................................................. 2-24
2.3.5 Video Amplifier PCB .................................................... 2-30
2.3.6 System Controller PCB ................................................ 2-34
2.3.7 Raster Timing Generator PCB ..................................... 2-40
2.3.8 Horizontal/Vertical Deflection PCB .............................. 2-45
2.3.9 Convergence/Deflection PCB ...................................... 2-51
2.3.10 Scan Reversal PCB ..................................................... 2-57
2.3.11 Backplane PCB............................................................ 2-62
The assemblies and components in the Model 200 projector are
contained mainly in the five sections below:
•
The Optics Assembly Section is located at the front area of
the projector. The Optics Assembly Section includes the
Condensing Lens, Cold Mirror/IR Filter (
CAUTION!
the mirror passes infrared light and its reflection contains only
"cold' light that does not transmit appreciable heat. As a result
of the absorption of infrared heat radiation, "cold" mirrors can
get very hot.), Ultraviolet Filter, Dichroic Mirror Assembly,
Prisms, Combining Prism, Image Mirrors, and the Zoom
Projection Lens.
•
The Arc Lamp Assembly section is located in the right front
area of the unit. It contains the Ignitor, Laser Power Supply,
Xenon Arc Lamp and Elliptical Reflector.
Chapter 2---System Description
:
The term "cold mirror" is used because
2-1