68 | Troubleshooting
Specific
Symptoms
What You
Experience
Possible Solutions
Cannot adjust
the display with
touch OSD
OSD does not
appear on the
screen
•
Turn off the display, unplug the display power
cable, plug it back, and then turn on the display.
•
Check whether the OSD menu is locked. If yes,
touch
icon for 4 seconds to unlock .
No Input Signal
when user
controls are
pressed
No picture, the
LED light is
white
•
Check the signal source. Ensure 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.
The picture
does not fill the
entire screen
The picture
cannot fill the
height or width
of the screen
•
Due to different video formats (aspect ratio) of
DVDs, the display may display in full screen.
•
Run the built-in diagnostics.
No image
when using
USB Type-C
connection
to computer,
laptop, and so
on
Black screen
•
Verify if the USB Type-C interface of the
device can support DP alternate mode.
•
Verify if the device required more than 90 W
power charging.
•
USB Type-C interface of device cannot support
DP alternate mode.
•
Set Windows to Projection mode.
•
Ensure that the USB Type-C cable is not
damaged.
No charging
when using
USB Type-C
connection
to computer,
laptop, and so
on
No charging
•
Verify if the device can support one of 5 V/9
V/15 V/20 V charging profiles.
•
Verify if the Notebook requires a >90 W power
adaptor.
•
If the Notebook requires a >90 W power
adaptor, it may not charge with the USB
Type-C connection.
•
Ensure that you use only Dell approved adapter
or the adapter that comes with the product.
•
Ensure that the USB Type-C cable is not
damaged.
