Troubleshooting - Acer S240HL User Manual

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
No Picture
Abnormal
Picture
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
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.
EN-15