102 | Troubleshooting
Product-specific problems
Problem What you
experience
Possible solutions
Screen image is
too small
The image is centered
on the screen, but
does not fill the entire
viewing area
• Check the Aspect Ratio setting in the
Display menu OSD.
• Reset the monitor to factory settings.
Cannot adjust
the monitor
with the
joystick control
on the rear of
the monitor
OSD does not appear
on the screen
• Turn o the monitor, unplug the monitor
power cable, plug it back, and then turn on
the monitor.
No Input Signal
when user
controls are
pressed
No picture, the LED
light is white
• Check the signal source. Ensure that the
computer is not in the power-saving mode
by moving the mouse or pressing any key
on the keyboard.
• Check whether the signal cable is plugged
in properly. Connect the signal cable again,
if necessary.
• Reset the computer or video player.
The picture
does not fill the
entire screen
The picture cannot fill
the height or width of
the screen
• Due to dierent video formats (aspect
ratio) of DVDs, the monitor may display in
full screen.
• Run the built-in diagnostics.
No image
when using DP
connection to
the PC
Blank screen • Verify which DP standard is your Graphics
card is certied to. Download and install
the latest graphics card driver.
No image
when using
Thunderbolt
TM
4 connection
to computer,
laptop, and so
on
Blank screen • Verify if the Thunderbolt
TM
4 interface of
the device can support DP alternate mode.
• Verify if the device required more than
EPR 140W power charging.
• Set Windows to Projection mode.
• Ensure that the Thunderbolt
TM
4 cable is
not damaged.
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