7.0 Troubleshooting
Contents
7.1 Safety............................................................................................................ 7-1
7.2 LEDs............................................................................................................. 7-2
Backpanel LEDs......................................................................................... 7-2
Backplane PCB LEDs ................................................................................ 7-11
7.3 Diagrams ...................................................................................................... 7-12
Image Path.................................................................................................. 7-14
Deflection Path........................................................................................... 7-15
CRT Protection........................................................................................... 7-19
7.4 Error Codes .................................................................................................. 7-22
7.1 Safety
CAUTION
review the chapter on Safety at the beginning of this manual.
WARNING
procedures 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.
Model 250 Service Manual
! Before performing procedures in this chapter,
!!!
When performing troubleshooting
Chapter 7---Troubleshooting
7-1