ACER B277U
13
5. Troubleshooting
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
No Picture
LED ON
Using OSD, adjust brightness and contrast to
maximum or reset to their default settings.
LED OFF
Check the power switch.
Check if AC power cord is properly connected to
the monitor.
LED displays amber
color
Check if video signal cable is properly connected
at the back of monitor.
Check if the power of computer system is ON.
Abnormal
Picture
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,
center shift, or too
small or too large in
display size
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.
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
Sound
(Only
Audio-Input
model)
(Optional)
No sound, or sound
level is too low
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.
