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Function test
After repair, be sure to confirm that all functions are working.
Table 4-1:
Function test
Test item
Te
Function test
st item
HDMI test
After repair, be sure to confirm that all functions are working.
HDMI test
DP test
DP test
USB-C test
Table 4-1:
Function test
Audio test
Support and troubleshooting
The following table lists possible problems, the possible cause or each problem, and the recommended solutions.
Problem
Screen is blank or video
is flashing.
Image appears blurred,
indistinct, or too dark.
Operating description
Operating description
Confirm whether image displays and sound plays
correctly on the monitor.
Confirm whether image displays and sound plays
Confirm whether image displays and sound plays
correctly on the monitor.
correctly on the monitor.
Confirm whether image displays and sound plays
Confirm whether image displays and sound plays
correctly on the monitor.
correctly on the monitor
Change volume and balance to confirm whether
volume is smooth and loud enough.
Possible cause
Power cord is disconnected.
The monitor is turned off.
Video cable is improperly connected.
System is in Sleep Mode.
Video card is incompatible.
Brightness is too low.
Tool used
Tool used
Computer or DVD player
Computer or DVD player
Computer or DVD player
Computer or DVD player
Computer or USB-C player
Speaker
Solution
Connect the power cord.
Press the front bezel 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.
Connect the video cable
properly.
Press any key on the keyboard
or move the mouse to exit
sleep mode
Open the OSD menu and
select the Input menu. Set
Auto- Switch Input to Off
and manually select the input.
Open the OSD menu and
select Brightness to adjust the
brightness scale as needed.
25
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