Acer A231H Manual do utilizador - Página 20
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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
LED OFF
No Picture
LED displays
amber color
Unstable
Picture
Display is
missing, center
shift, or too
Abnormal
small or too
Picture
large in display
size
Abnormal
No sound, or
Sound
sound level is
(Only Audio-
too low
Input model)
(Optional)
·
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-19