Users Guide

52 | Troubleshooting
Problem What you
experience
Possible solutions
The picture does
not fill the entire
screen
The picture
cannot fill the
height or width
of the screen
•Due to dierent video formats (aspect ratio) of
DVDs, the monitor 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 65 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 proles.
•Verify if the device requires more than 65 W power
charging.
•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.
Intermittent
charging
when using
USB Type-C
connection to
computer,
laptop, and so on
Intermittent
charging
•Check if the maximum power consumption of
device is over 65 W.
•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.
No image
when using DP
connection to
the PC
Black screen •Verify which DP standard (DP 1.1a or DP 1.4) is your
Graphics Card certied to. Download and install the
latest graphics card driver.
•Some DP 1.1a graphics card cannot support
DP 1.4 monitors. Go to OSD menu, under Input
Source selection, press and hold DP select
key for 8 sec to change the monitor setting from
DP 1.4 to DP 1.1a.
No image when
using USB-C
MST
Black screen or
2nd DUT is not
Prime mode
•USB-C input, Go to OSD menu, under Display Info
check the Link Rate is HBR2 or HBR3, if Link Rate
is HBR2, suggest to use USB-C to DP cable to turn
on MST.