Arc Lamp Focus And Alignment - Hughes JVC Model 200 Service Manual

3.0 Service Adjustments
Contents

3.1 Arc Lamp Focus and Alignment............................................................... 3-1

3.2 Arc Lamp Current Setting ........................................................................ 3-4
3.3 Electronic Module Tilt-up ......................................................................... 3-5
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3.4 ILA Back Focus ..................................................................................... 3-5
3.5 CRT Mechanical Focus............................................................................ 3-7
3.6 CRT Rotation ........................................................................................... 3-9
3.7 CRT Electronic Focus .............................................................................. 3-10
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3.8 ILA Overlap............................................................................................ 3-10
3.9 Jumper Settings ....................................................................................... 3-11
3.9.1 Front/Rear Jumper Settings .......................................................... 3-11
3.9.2 Inverted Vertical Jumper Settings.................................................. 3-12
3.10 Vertical and Horizontal Size Settings....................................................... 3-12
3.11 Software Updating ................................................................................... 3-14
3.12 Cleaning Lens, ILA
This chapter details adjustment procedures required to maintain the Model 200.
Refer to Figures 4-1 and 4-11 to locate assemblies and components. For a
complete list of tools required to perform adjustments, refer to Chapter 1.
CAUTION!
on Safety at the beginning of this manual.
chapter that require the projector covers to be removed, wear high voltage gloves
(ANSI/ASTM 10,000 volt rated) when working near the CRTs, Arc Lamp, or power
supplies. Wear safety goggles (rated X5) when working anywhere near the light
path from the arc lamp or the projection lens.
3.1 Arc Lamp Focus and Alignment
Model 200 Service Manual
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assemblies, and Mirrors ......................................... 3-16
Before performing procedures in this chapter, review the chapter
WARNING!!!
The Arc Lamp must be refocused and the XY axes realigned
whenever an Arc Lamp is replaced. The Arc Lamp can also
become defocused or misaligned from physical shock to the
projector.
1. Select and view Red, Green, and Blue.
2. Select Test Pattern 4, Flat Field.
Chapter 3---Service Adjustments
When performing procedures in this
3-1