Hitachi CP-X3021WN The signal cables are not correctly connected, The MUTE function is working

Troubleshooting

Phenomena that may be easy to be mistaken for machine defects (continued)

Phenomenon	Cases not involving a machine defect	Reference
		page
	The signal cables are not correctly connected.	10 ~ 14
	Correctly connect the audio cables.
	The MUTE function is working.	21
	Restore the sound pressing MUTE or VOLUME +/-
	button on the remote control.
	The volume is adjusted to an extremely low level.	21, 46
	Adjust the volume to a higher level using the menu
	function or the remote control.
Sound does	The AUDIO SOURCE/SPEAKER setting is not correct.	46
not come out.	Correctly set the AUDIO SOURCE/SPEAKER in AUDIO menu.
	The mode selected for HDMI AUDIO is not suitable.
	Check each of the two modes provided and select the	46
	suitable one for your HDMITM audio device.
	The Sound button or checkbox is disabled.
	If you have selected USB TYPE B, remove the check
	mark from the Sound checkbox in the Options window of	92
	"LiveViewer Lite for USB".
	If you have selected LAN, remove the check mark from
	the Sound checkbox in the Option menu of "LiveViewer".
	The lens cover is attached.	4, 20
	Remove the lens cover.
	The signal cables are not correctly connected.	10 ~ 14
	Correctly connect the connection cables.
	The brightness is adjusted to an extremely low level.	33
	Adjust BRIGHTNESS to a higher level using the menu
	function.
No pictures are	The computer cannot detect the projector as a plug
	and play monitor.	10
displayed.	Make sure that the computer can detect a plug and play
	monitor using another plug and play monitor.
	The BLANK screen is displayed.	28
	Press BLANK button on the remote control.
	The USB TYPE B port is selected as the picture input
	source even if MOUSE is selected for USB TYPE B.
	Select USB DISPLAY for USB TYPE B in OPTION menu	54
	to project the picture input to the port. Otherwise select
	other port for picture input.
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