23
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.
The following table lists possible issues, the possible cause of each issue, and the
recommended solutions.
Monitor is off.
Press the monitor 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. See
Connecting the cables on page 7
for more
information.
System is in Auto-Sleep
Mode.
Press any key on the keyboard or
move the mouse to inactivate the
screen blanking utility.
Video card is incompatible. Open the OSD menu and select the
Input
menu. Set
Auto- Switch Input
to
Off
and
manually select the input.
or
Replace the video card or connect the video
cable to one of the
computer’s on-board video
sources.
Function test
After repair, be sure to confirm that all functions are working.
Table 4-1:
Function test
Te
st item
Operating description
Tool used
HDMI test
Confirm whether image displays and sound plays
correctly on the monitor.
Computer or DVD player
DP test
Confirm whether image displays and sound plays
correctly on the monitor.
Computer or DVD player
Audio test
Change volume and balance to confirm whether
volume is smooth and loud enough.
Speaker
Table 4-1:
Function test
Test item
Operating description
Tool used
HDMI test
Confirm whether image displays and sound plays
correctly on the monitor.
Computer or DVD
player
D-SUB test
Confirm whether image displays and sound plays
correctly on the monitor
Computer or D-SUB
player
Table 3-1
Common issues and solutions
Issues
Possible cause
Solution
Screen is blank
or video is
flashing.
Power cord is
disconnected.
Connect the power cord.
