JVC DLA-M4000LU manual Troubleshooting

Troubleshooting

Solutions to common problems related to your projector are described here. If none of the solutions presented here solves the problem, unplug the projector and consult a authorized dealer or service center.

Symptom	Probable cause	Corrective action	Page
Power is not supplied.	• Is the power cord disconnected?	• Insert the power cord (plug) firmly.	23
	• Is the main power switch turned on?	• Turn on the MAIN POWER switch.	25
	• Is the correct power voltage used?	• Check that AC 220V — 240V is	3, 65
		supplied.
	• Has the breakertripped open?	• Check that the breaker is closed.	––––
	• Has the lamp protective function	• Wait until the lamp has cooled down.
	activated? (This can occur if the power	(Turn on the main power sand let the
	is shut down due to a power failure,	fans cool the lamp.)	––––
	etc.)	About 10 minutes later, press
		OPERATE on the remote control.
Light is not emitted,	• Is the lens cap removed?	• Remove the lens cap.	23
or light level is low.
	• Is the lamp life near its end?	• Check the lamp use time on the menu,
		and if the lamp life is near its end,	41, 59
		arrange for a replacement lamp, or
		replace a little earlier.
	• Has the projector been moved from its	• Check the installed position.	––––
	installed place?
With power on,	• Is the air intake or exhaust area	• Turn off the MAIN POWER switch,
operation starts but	blocked?	remove any blocking objects, and turn	8, 9, 16
stops in a few minutes.		on the MAIN POWER switch again.
Video image does not	• Is the correct input selected?	• Select the correct inputs with the AV	26
appear.		and RGB buttons.
	• Are connected devices connected	• Connect connected devices correctly.	20, 21
	correctly?
	• Are signals being supplied from the	• Set connected devices correctly.	––––
	connected devices?
	• Are input signals (scanning frequency,	• Check if the signal is correct as input	19
	etc.) appropriate?	(scanning frequency, etc.).
		Input the appropriate signal.
	• Is the source setting correctly selected?	• Set the source setting to AUTO or to	44, 46
	Isn’t a wrong source (forced mode)	the correct dedicated source (forced
	selected?	mode).
Video image dims.	• Is brightness adjusted correctly?	• Adjust brightness on the menu.	38, 40
	• Is focus adjusted correctly?	• Adjust focus with the remote control’s	27, 30
		FOCUS (+/–) buttons.
	• Is distance too short or too long?	• Set the projector at the correct	18
		distance.
Color is poor or	• Are TRACKING and PHASE adjusted	• Adjust TRACKING and PHASE on the	30, 36
unstable.
	correctly?	menu.
	• Is picture quality (color density, etc.)	• Adjust picture quality on the menu.	38, 40
	adjusted correctly?
	• Is the correct CLAMP selected?	• Select the correct CLAMP on the	41, 42
		OPTION MENU.
		(To be continued on the next page)

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