Hitachi hitachi lcd monitor Troubleshooting, Symptoms That Seemingly Appear to be Failures

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.

	WARNING
	Customer servicing can be hazardous.
		Symptom			Point to check		See page
• No picture with the power-indicating lamp off.				•	Check the way the power cable is connected.		18
				•	Press the power switch.
							19
• The message “No Sync. Signal” or “Power				No sync signal is detected.
	Save” is displayed.		! No Sync. Signal	•	Check the way the signal cable is connected.
				• Make sure that the switch of the computer, imaging
• No picture with the power indicating lamp					equipment, etc., is turned on.		15
				•	Make sure the computer is not in the power-save mode.
	lights in orange.			•	Check to see if the input selection matches the connection
					terminal.
• The message “Invalid Scan Freq.” is				An input signal is not received normally.			15
	displayed.			•	Check to see if the input signal matches the monitor
					specifications.		50
			! Invalid Scan Freq.	• Check the way the signal cable is connected.			51
							52
• The power indicating lamp is normally lit but				•	Check the contrast and brightness settings (adjust them for		15
	no picture.				higher contrast and brightness).
				•	Check the way the signal cable is connected.		36
							38
• The display image appears flowing slantwise.				•	Adjust the dot clock frequency and phase. (Adjust the dot
• Text displayed across the screen appears					clock frequency first, the dot clock phase next.)
	vertically streaked, with the characters in				(RGB input)		32
	vertical columns blurred.
							47
• Text displayed across the screen appears				•	Adjust the dot clock phase for the clearest viewing.
	blurred.				(RGB input)
• A fine pattern flickers when displayed on the							32
	screen.						47
• The remote control does not work.				•	Check to see if the batteries are loaded in the remote control		9
					in opposite direction.
				• Check to see if the batteries in the remote control are OK.
• The display image does not appear in the				•	Check to see if the displayed input signal match the monitor		15
	normal position.				specification by pressing	button.
							34
				•	Turn off the screen saver.
							50
							51
							52
• The display has lack of picture around the				•	Turn off the screen saver.
	screen.						34
	(PC input mode only)
• The temperature of the display panel surface is high.				•	The LCD monitor is lighting the fluorescent lamps inside of
					the panel.		—
					In some cases, this may cause the temperature of the panel
					surface to increase. Please note that this is not a malfunction.

ENGLISH

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