JVC 330 Service Manual page 148

Chapter 5---Troubleshooting
Table 5-5 Troubleshooting Guide
Problem and
Symptom to
Check
No Power
Main input power.
System Power
Supply main
circuit breaker.
System Power
Supply circuit
breaker fails
when reset?
Power Interlock
Switch.
Projector cover not
enabling
interlock switch.
System Power
Supply shuts
down during
power up
sequence.
No Picture
Correct channel
selected.
Arc Lamp turned
off.
System power
turned off.
Video source.
"HIDE" command
invoked.
Color Cutoff.
No video or raster
on only one
CRT.
Raster present but
no video image.
Model 330, 340SC, and 370SC Service Manual
Possible Solution
Reset circuit breaker.
Reset System Power Supply circuit
breaker. Reset interlock switch
to the U position.
P
Verify input power is correct.
Replace defective System Power
Supply
Test switch operation.
If defective, replace switch.
Reposition rear cover.
Re-seat circuit boards.
Select correct channel input.
Restart projector.
Restart projector.
Verify video source is turned on,
properly connected.
Un-hide video using H
Turn on R,G, B. Press R, G, B and
CUTOFF.
Replace defective CRT or Video
Amplifier Board.
Replace Video Amplifier Board or
Video Processor Board.
Service
Manual
Figure 3-1
Figure 3-1
/M
.
IDE ODE
4.8, 4.9
Operator
Manual
3-1
3.1,
4.5
4.2
4.11
4.2
3.1 4.1
3.1
Table 5-1
4.11
5-8