JVC 250 - Manual (Page 163)

Chapter 7---Troubleshooting
Model 250 Service Manual 7-25
7.5 Troubleshooting Guide
Table 7-3 lists some common projector problems, what to check when problems
occur, and offers possible solutions. It indicates the section in this Service Manual
that provides some related information on the problem. If the User’s Guide
contains pertinent information, the appropriate section will be given.
Table 7-3 Troubleshooting Guide
Problem Check Possible Solution Section
No Power Main Circuit Breaker on
Projector rear panel. Reset Circuit Breaker. Section 3.2
Main Circuit Breaker
fails when reset. Verify input power is
correct. Replace defective
Low Voltage Power
Supply or Arc Lamp
Power Supply.
Section 3.2
Projector cover not
enabling interlock
switch? Reposition projector
cover.
Section 6.1
No Picture Correct channel input &
VIC selected? Select correct channel
and VIC.
User’s Guide
section 4.6
Arc Lamp turned off. Restart projector. User’s Guide 4.3.
System power turned off. Restart projector. User’s Guide 4.3.
Signal source Verify signal source is
turned on and properly
connected. User’s Guide 3.5.
HIDE command
invoked? Unhide image with the
HIDE key on the remote.
One color is missing. Turn on the missing color
with the HIDE key.
No image or raster on
one CRT. Replace defective CRT or
Video Amplifier Board. Section 6.9, 6.10
Arc Lamp Arc Lamp will not light.
Clicking noise is heard
when projector is turned
on. Replace worn out Arc
Lamp. Section 4.1
Clicking noise not
audible when projector is
turned on. LVPS, ALPS, or Ignitor
faulty. Replace LVPS,
ALPS, or Ignitor.
Section 3.3, 3.4
Arc Lamp ignites but will
not stay lit. Replace defective Ignitor. Section 3.4