JVC GM X50U manual Troubleshooting, Sound does not occur

Troubleshooting

Solutions to common problems related to the Monitor are described here. If none of the solutions presented here solves the problem, unplug the Monitor and consult an 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.	12
	•Is the POWER switch turned on?	•Turn on the POWER switch.	14
Power is suddenly	•Is the Power On/Off Timer activated?	•Set the timer to “OFF” on the menu.	26
turned on or off.
Video image does not	•Is the correct input selected?	•Select the correct input by pressing
appear, or audio		INPUT SELECT (VIDEO A, VIDEO B,	14
sound does not occur.		COMPO./(RGB B) or RGB A) on the
		remote control (or INPUT on the
		Monitor).
	•Are the devices connected correctly?	•Connect the devices correctly.	11, 12
	•Are signals being supplied from the	•Set the devices correctly.	—
	connected devices?
	•Is “COMPO./RGB B” set correctly if	•Set it correctly.
	using the COMPONENT/RGB B		20
	terminals?
	•Are input signals (scanning frequency,	•Check if the signal is appropriate
	etc.) appropriate?	(scanning frequency, etc.), and input	10
		the appropriate signal.
	•Is brightness adjusted correctly?	•Adjust brightness on the menu.	16
	•Is volume set at minimum?	•Adjust volume.	14
	•Are the diagnostic lamps turned on?	•Refer to “Self-diagnostic Indication,”	37
		and take an appropriate action.
The picture becomes	•Is the signal RGB input?	•Adjust DOT CLOCK and CLOCK
blurred.		PHASE using the menu.	17
	•Is the RGB B connecting cord long?	•Set the SYNC TERM. “LOW.”	21
Color is abnormally	•Is brightness adjusted correctly?	•Adjust BRIGHT (brightness) using the	16
dark or bright.		menu.
	•Is picture quality (color density, etc.)	•Adjust picture using the menu.	16
	adjusted correctly?
	“TEMP. OVER” lights (or flashes) at the	•Refer to “Self-diagnostic Indication,”	37
	right bottom of the screen.	and take an appropriate action.
Color is poor or	•Is the correct broadcast system (color	•Set SIGNAL MODE (color system) to	20
unstable.	system) selected?	“AUTO.”
	•Are signals (scanning frequency, etc.) to	•Check if the signal is appropriate
	connected devices appropriate?	(scanning frequency, etc.), and input	10
		the appropriate signal.
Color is suddenly	•Is the Color-Reverse/Refresh timer	•Set “COLOR-REVERSE”/“REFRESH”	29, 30
reversed or whitened.	activated?	to “OFF” on the menu.
The picture is cut or	•Is the size or position of the screen	•Adjust H SIZE, V SIZE, H POSITION
shifted toward one	adjusted properly?	or V POSITION using the menu.	17
side.
The remote control	•Are the batteries correctly set?	•Insert batteries correctly, observing the	8
does not work.		polarities (ª and ·).
	•Are the batteries exhausted?	•Replace with new batteries.	8
	•Is there any object blocking the path	•Remove any blocking object.
	between the remote control and remote		—
	sensor?
	•Is the Monitor too far away from you?	•Move toward the Monitor, then operate	—
		the remote control.
The buttons on the	•Is the Control Lock function in use?	•Set the Control Lock function to “OFF”	23
Monitor do not work.		using the menu.

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