JVC 250 service manual Troubleshooting Guide, Problem Check Possible Solution Section

Chapter 7---Troubleshooting

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 7-3Troubleshooting Guide

Problem	Check	Possible Solution	Section
No Power	Main Circuit Breaker on	Reset Circuit Breaker.	Section 3.2
	Projector rear panel.
	Main Circuit Breaker	Verify input power is	Section 3.2
	fails when reset.	correct. Replace defective
		Low Voltage Power
		Supply or Arc Lamp
		Power Supply.
	Projector cover not	Reposition projector	Section 6.1
	enabling interlock	cover.
	switch?
No Picture	Correct channel input &	Select correct channel	User’s Guide
	VIC selected?	and VIC.	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	User’s Guide 3.5.
		turned on and properly
		connected.
	HIDE command	Unhide image with the
	invoked?	HIDE key on the remote.
	One color is missing.	Turn on the missing color
		with the HIDE key.
	No image or raster on	Replace defective CRT or	Section 6.9, 6.10
	one CRT.	Video Amplifier Board.
Arc Lamp	Arc Lamp will not light.	Replace worn out Arc	Section 4.1
	Clicking noise is heard	Lamp.
	when projector is turned
	on.
	Clicking noise not	LVPS, ALPS, or Ignitor	Section 3.3, 3.4
	audible when projector is	faulty. Replace LVPS,
	turned on.	ALPS, or Ignitor.
	Arc Lamp ignites but will	Replace defective Ignitor.	Section 3.4
	not stay lit.

Model 250 Service Manual 7-25