JVC DLA-M4000LU manual Troubleshooting

Troubleshooting (Cont.)

Symptom	Probable cause	Corrective action	Page
During video replay,	• have Installation adjustment been	• For installation, consult the dealer
video image	performed?	where you purchased the projector or a	––––
sometimes is		local service center.
disturbed
Image color is poor or	• Is picture quality (color desity, etc.)	• Adjust picture quality on the menu.	38, 40
image is disturbed	adjusted correctly?
	• Is the correct broadcast system (color	• Set the broadcast system (color	34
	system) selected?	system) to AUTO.
	• Are signals (scanning frequency, etc.)	• Check if the signal is appropriate	19
	to connected devices appropriate?	(scanning frequency, etc.), and input
		the appropriate signal.
	• Is the source setting correctly selected?	• Set the source setting to AUTO. If the
	Isn’t a wrong source (forced mode)	problem still persists, set it to the	44 ~ 46
	selected?	correct dedicated source (forced
		mode).
Specific colors fail to	• Are specifications of the signal being	• Check specifications of both signal
be displayed	input matching those of the video input	being input and video input card.	––––
	card?
	• Is the input cable connected correctly?	• Check cable connections.	21
	• Has the lamp's life come to its end?	• Check the used lamp hours on the
		menu, and if the lamp life is near its	60
		end, consult the dealer where you
		purchased the projector or a local
		service center.
The upper part of the	• While computer system signal is input,	• Input separate sync signals for vertical	10
video image bows or	isn’t a sync signal for composite sync	sync (V) and horizontal sync (H)
distorts.	(Cs) or G on sync being input?	signals.
	• Isn’t signal with much jitter or skew	• Input signals with little jitter or	––––
	distortion being input to a video deck?	distortion.
	• Is the source setting correctly selected?	• Set the source setting to AUTO. If the
	Isn’t a wrong source (forced mode)	problem still persists, set it to the	44 ~ 46
	selected?	correct dedicated source (forced
		mode).
	• Have the channel's setup contents	• Check the setup contents been	47 ~ 51
	been changed?	changed.
The projection	• Have the channel's setup contents	• Check the setup contents of the	47 ~ 51
position on the screen	been changed?	channel and correct them if necessary.
has shifted.
	• Is sync signal being input correctly?	• Check sync signal and related	10
		connection.
	• Has the projector been moved from its	• Check the installed position.	––––
	installed place?
Video image suddenly	• Aren’t video turned off by pressing the	• Press the remote control’s AV HIDE	12
go out.	remote control’s AV HIDE button?	button to turn video on.
	• Are all color video signals being input?	• Check signals and connections.	19 ~ 23

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