Acer AL1702 user manual Troubleshooting, Problems Current Status Remedy, LED on, Led Off

AL1702 E-13

TROUBLESHOOTING

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

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		Check if AC power cord is properly connected
Picture		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 Picture	Check if the specification of graphics adapter
		and monitor is in compliance which may be
		causing the input signal frequency mismatch.
	Display is missing,	Using OSD, adjust RESOLUTION, CLOCK,
	center shift, or too	CLOCK-PHASE, H-POSITION and V-
Abnormal	small or too large	POSITION with non-standard signals.
	in display size
Picture		Using OSD, in case of missing full-screen image,
		please select other resolution or 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 too	connected.
	low
		Check if the volume setup of the host PC is in
		minimum position and try to raise the volume
		level.