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Function test
After repair, be sure to confirm that all functions are working.
Support and troubleshooting
The following table lists possible problems, the possible cause or each problem, and the recommended
solutions.
Table 4-2:
Problem
Screen is blank or
video is flashing.
Image appears
blurred,
indistinct, or too
dark.
20
Solving common problems
Possible cause
Power cord is disconnected.
Monitor is off.
Video cable is improperly connected.
System is in Sleep mode.
Video card is incompatible.
Brightness is too low.
Solution
Connect the power cord.
Power the power button.
NOTE: If pressing the Power
button has no effect, press
and hold the power button
for 10 seconds to disable the
Power button lockout
feature.
Connect the video cable
properly.
Press any key on the
keyboard or move the
mouse to exit Sleep mode.
Open the OSD menu and
select the Input Control
menu. Set Auto-Switch Input
to Off and manually select
the input
Open the OSD menu and
select Brightness to adjust
the brightness scale as
needed.
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