25
Function test
After repair, be sure to confirm that all functions are working.
Support and troubleshooting
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. For more information, see
Connecting the cables on page 9
.
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
DP test
Confirm whether image displays and sound plays
correctly on the monitor.
Computer or DVD
player
USB-C test
Confirm whether image displays and sound plays
correctly on the monitor
Computer or USB-C
player
USB test
Confirm whether image displays and sound plays
correctly on the monitor
Computer or USB-C
player
Table 3-1
Common issues and solutions
Issues
Possible cause
Solution
Screen is blank or
video is blinking.
Power cord is disconnected.
Connect the power cord.
Image appears
blurred, indistinct, or
too dark.
Brightness setting is too low.
Open the OSD menu, and select
Brightness
to adjust the
brightness scale as needed.
