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Chapter 3---Electrical
Model 250 Service Manual 3-1
3.0 Electrical
Contents
3.1 Safety............................................................................................................ 3-1
3.2 Incoming Power Circuit ............................................................................... 3-2
AC Power Cord.......................................................................................... 3-2
AC Circuit Breaker..................................................................................... 3-2
AC EMI Filter ............................................................................................ 3-2
3.3 Power Supplies............................................................................................. 3-3
Low Voltage Power Supply ....................................................................... 3-3
Arc Lamp Power Supply............................................................................3-5
High Voltage Power Supply....................................................................... 3-9
3.4 Igniter Assembly .......................................................................................... 3-15
3.1 Safety
CAUTION
!
Before performing procedures in this chapter,
review the chapter on Safety at the beginning of this manual.
WARNING
!!!
When performing procedures in this chapter
that require projector covers to be off,
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
.
CAUTION
!
It is very strongly recommended that setup
data be downloaded (
Exported, see section 8.2 Importing/Exporting
) before
performing any of the following procedures. Exporting baseline source
setup data to disk is an excellent precautionary measure. It will save the
time of setting up new source file(s) in the case of an unexpected problem
.