21
Function test
After repair, be sure to confirm that all functions are working.
Table 4-1:
Function test
Test item
Operating description
Tool used
HDMI test
Confirm whether image displays
Computer or DVD player
DP test
Confirm whether image displays
Computer or DVD player
DP out test
Confirm whether image displays
Computer / DVD player and
other monitor
USB Hub Test
Confirm USB function of 4-USB Type-A working
normally.
Computer or Notebook
Support and troubleshooting
The following table lists possible problems, the possible cause or each problem, and the recommended
solutions.
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 turned 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 Sleep mode.
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 menu.
Set Auto- Switch Input
to Off and manually
select the input.
or
Replace the video card or
