19
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
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
D-SUB test
Confirm whether image displays and sound plays
correctly on the monitor
Computer or D-SUB player
Table 4-2:
Solving common problems
Problem
Possible cause
Solution
Screen is blank or
video is flashing.
Power cord is disconnected.
Connect the power cord.
Monitor is off.
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.
Master power switch is set to off.
Set the master power switch
on the rear of the monitor to
the On position.
Video cable is improperly connected.
Connect the video cable
properly.
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.
Image appears blurred,
indistinct, or too dark.
Brightness is too low.
Open the OSD menu and
select Brightness to adjust the
brightness scale as needed.
