Acer P235H manual Troubleshooting, EN-19

TROUBLESHOOTING

Before sending your LCD monitor for servicing, please check the trouble- shooting list below to see if you can self-diagnose the problem.

(VGA Mode)

Problems	Current Status	Remedy
	LED ON	· Using OSD, adjust brightness and contrast
			to maximum or reset to their default
			settings.
	LED OFF	·	Check the power switch.
No Picture		· Check if AC power cord is properly
			connected to the monitor.
	LED displays	· Check if video signal cable is properly
	amber color		connected at the back of monitor.
		· Check if the power of computer system is
			ON.
	Unstable	· Check if the specification of graphics
	Picture		adapter and monitor is in compliance
			which may be causing the input signal
			frequency mismatch.
	Display is	·	Using OSD, adjust RESOLUTION, CLOCK,
	missing, center		CLOCK-PHASE, H-POSITION and V-
Abnormal	shift, or too		POSITION with non-standard signals.
	small or too
Picture		·	Using OSD, in case of missing full-screen
	large in display
			image, please select other resolution or
	size
			other vertical refresh timing.
		· Wait for a few seconds after adjusting the
			size of the image before changing or
			disconnecting the signal cable or powering
			OFF the monitor.
Abnormal	No sound, or	· Check the audio cable with the host PC is
Sound	sound level is		connected.
(Only Audio-	too low
		· Check if the volume setup of the host PC is
Input model)
(Optional)			in minimum position and try to raise the
			volume level.

EN-19