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Product specific problems
Common
Symptoms
Screen image is too
small
Cannot adjust the
monitor with the
Joystick on the back
panel
No Input Signal when
user controls are
pressed
The picture does not
fill the entire screen
No image when using
USB-C connection to
computer, laptop, and
so on
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76
Troubleshooting
What you
experience
Image is centered
on screen, but
does not fill entire
viewing area
OSD does not
appear on the
screen
No picture, the LED
light is white
The picture cannot
fill the height or
width of the screen
Black screen
Possible Solutions
• Check the Aspect Ratio setting in the
Display menu OSD.
• Reset the monitor to factory settings.
• Turn Off the monitor, unplug the power
cable, plug it back, and then turn On the
monitor.
• The OSD menu may be locked. Press
and hold in Up or Down or Left or Right
direction for 4 secs to unlock.
• 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. Re-plug the signal cable if
necessary.
• Reset the computer or video player.
• Due to different video formats (aspect
ratio) of DVDs, the monitor may display in
full screen.
• Run the built-in diagnostics.
• Verify if the USB-C interface of the
device can support DP alternate mode.
• Verify if the device required more than
90 W power charging.
• USB-C interface of device cannot support
DP alternate mode.
• Set Windows to Projection mode.
• Ensure that the USB-C cable is not
damaged.
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