Hitachi CP-X5021N, CP-WX4021N user manual Signal source does not correctly work

Troubleshooting

Phenomena that may be easy to be mistaken for machine defects

About the phenomenon confused with a machine defect, check and cope with it according to the following table.

Phenomenon	Cases not involving a machine defect	Reference
		page

	The electrical power cord is not plugged in.	15
	Correctly connect the power cord.
	The main power source has been interrupted during
	operation such as by a power outage (blackout), etc.	15
	Please disconnect the power plug from the power outlet,
	and allow the projector to cool down at least 10 minutes,
Power does not	then turn the power on again.
come on.	Either there is no lamp and/or lamp cover, or either
	of these has not been properly fixed.
	Please turn the power off and disconnect the power
	plug from the power outlet, and allow the projector to	89
	cool down at least 45 minutes. After the projector has
	sufficiently cooled down, please make confirmation of
	the attachment state of the lamp and lamp cover, and
	then turn the power on again.
	The signal cables are not correctly connected.	10 ~ 14
	Correctly connect the connection cables.
	Signal source does not correctly work.	–
	Correctly set up the signal source device by referring to
	the manual of the source device.
Neither sounds	The input changeover settings are mismatched.	19 ~ 21
nor pictures are	Select the input signal, and correct the settings.
outputted.
	The BLANK function for pictures and the MUTE
	function for sounds are working.
	AV MUTE may be active.	19, 28,
	Refer to the item “Sound does not come out” and “No	100
	pictures are displayed” on the next page to turn off the
	MUTE and BLANK functions.
(Continued on next page)

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