Arc Lamp Adjustment; Arc Lamp Current Adjustment - Hughes JVC 100 Service Manual

®
ILA
CRT
(inside
shield)
Figure 3-2 View of Green and Blue CRT and ILA

3.2 Arc Lamp Adjustment

Arc Lamp adjustment must be performed whenever an Arc Lamp is replaced and
may be needed if the projector is heavily jarred during shipment. The Arc Lamp
Adjustment consists of 2 separate adjustment procedures; Arc Lamp Current
adjustment and Arc Lamp Alignment.

Arc Lamp Current Adjustment

The Arc Lamp Current Adjustment must be performed whenever the Arc Lamp
Power Supply is replaced.
1. Remove the front cover.
1. Apply power to the projector and allow it to operate for a minimum of 15
minutes.
2. Measure the voltage across the Arc Lamp Power Supply ± output terminals
using a DVM (see Figure 3-3).
Terminals ± during projector power up because there is a 32 kV
pulse that lights the Arc Lamp that is present across these leads
during power up.
Model 100 Service Manual
CAUTION
: Do Not place DVM leads across Igniter
Chapter 3---Service Adjustments
®
Assemblies.
3-5