Hitachi CMP307XU manual Troubleshooting, Symptoms That Seemingly Appear to be Failures

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TROUBLESHOOTING

Symptoms That Seemingly Appear to be Failures

●Make the checks suggested below depending on the symptoms observed. If the symptoms remain uncorrected, contact your dealer.

■ Customer servicing can be hazardous.

Symptom		Point to check	See page
● The screen appears blank		→Check the way the power cable is connected.		10
with the power-indicating		→Make sure the main power switch is on.		11
lamp off.		→Press the power switch.
				13
● The message “POWER		No sync signal is detected.		10
SAVE” is displayed.	POWER SAVE	→Check the way the signal cable is connected.
		→Check to see if the input selection matches the		11
● The screen appears blank		connection terminal.
		→When RGB input is selected, make sure the
with the power indicating				13
		computer switch is turned on and the power save
lamp flickering in green.
		mode of the computer is off.
● The message “OUT OF FREQUENCY” is		An input signal is not received normally.	10	11
displayed.		→Check to see if the input signal matches the
		monitor specifications.	23	28
	OUT OF FRQUENCY	→Check the way the signal cable is connected.
				30
● The power indicating lamp		→Check the contrast and brightness settings	10	11
is normally lit but the		(adjust them for higher contrast and brightness).
screen appears blank.		→Check the way the signal cable is connected.	15	17
● The display image appears		→Adjust the dot clock frequency and phase.
flowing slantwise.		(Adjust the dot clock frequency first, the dot clock
		phase next.)
● Text displayed across the			19
screen appears vertically			27
streaked, with the
characters in vertical
columns blurred.
● Text displayed across the		→Adjust the dot clock phase for the clearest
screen appears blurred.		viewing.	19
● A fine pattern flickers when			27
displayed on the screen.
● The remote controller does not work.		→Check to see if the batteries are loaded in the
		remote controller in opposite direction.		12
		→Check to see if the batteries in the remote
		controller are OK.
● There are locations on the screen that are		→High-precision technology is used to
different from the periphery (*).		manufacturing the plasma display panel but, in
*Points that do not light, points with brightness		some cases, there are minor defects in some
different from that of the periphery, points with		parts of the screen. Please note that this is not a
color different from that of the periphery, etc.		malfunction.

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