Troubleshooting - Acer AL1702 User Manual

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
LED ON
LED OFF
No
Picture
LED displays
amber color
Unstable Picture
Display is missing,
center shift, or too
small or too large
Abnormal
in display size
Picture
Abnormal No sound, or
Sound sound level is too
low
Remedy
Using OSD, adjust brightness and contrast to
maximum or reset to their default settings.
Check the power switch.
Check if AC power cord is properly connected
to the monitor.
Check if video signal cable is properly
connected at the back of monitor.
Check if the power of computer system is ON.
Check if the specification of graphics adapter
and monitor is in compliance which may be
causing the input signal frequency mismatch.
Using OSD, adjust RESOLUTION, CLOCK,
CLOCK-PHASE, H-POSITION and V-
POSITION with non-standard signals.
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.
Check the audio cable with the host PC is
connected.
Check if the volume setup of the host PC is in
minimum position and try to raise the volume
level.
AL1702 E-13