Acer 506751 Manuel de l'utilisateur - Page 30
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(VGA Mode)
Problems
No Picture
Abnormal
Picture
Abnormal
Sound
(Only Audio-
Input model)
(Optional)
Current Status
LED ON
LED OFF
LED displays amber color
Unstable Picture
Display is missing, center
shift, or too small or too
large in display size
No sound, or 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.
EN-20