17
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.
Function test
After repair, be sure to confirm that all functions are working.
Table 4-1: Function test
Confirm whether image displays and sound plays
correctly on the monitor.
Confirm whether image displays and sound plays
correctly on the monitor.
Change volume and balance to confirm whether
volume is smooth and loud enough.
Confirm whether image displays and sound plays
correctly on the monitor.
Confirm whether image displays and sound plays
correctly on the monitor.
Confirm whether image displays correctly on the
monitor
Table 4-2: Solving common problems
Screen is blank or
video is flashing.
Power cord is disconnected.
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.
Video cable is improperly connected.
Connect the video cable
properly.
Press any key on the
keyboard or move the
mouse to exit Sleep mode.
Video card is incompatible.
Open the OSD menu and
select the Input Control
menu. Set Auto-Switch Input
to Off and manually select
the input
Image appears
blurred,
indistinct, or too
dark.
Open the OSD menu and
select Brightness to adjust
the brightness scale as
needed.
Monitor video cable is disconnected.