Dell UltraSharp 27 User Manual page 96

Problem
No image when
using USB-C
connection
to computer,
laptop, and so
on
(U2722DE only)
No charging
when using
USB-C
connection
to computer,
laptop, and so
on
(U2722DE only)
Intermittent
charging when
using USB-C
connection to
computer,
laptop, and so
on
(U2722DE only)
No image when
using USB-C
MST
No network
connection
96 | Troubleshooting
What You Possible Solutions
Experience
Black screen • Verify if the USB-C interface of the device can
• Verify if the device required more than 90 W
• USB-C interface of device cannot support DP
• Set Windows to Projection mode.
• Ensure that the USB-C cable is not damaged.
No charging • Verify if the device can support one of 5 V/9 V/
• Verify if the Notebook requires a >90 W power
• If the Notebook requires a >90 W power
• Ensure that you use only Dell approved adapter
• Ensure that the USB-C cable is not damaged.
Intermittent • Check if the maximum power consumption of
charging
• Ensure that you use only Dell approved adapter
• Ensure that the USB-C cable is not damaged.
Black screen or • USB-C input, Go to OSD menu, under Display
2nd DUT is not
Prime mode
Network • Do not toggle Off/On the power button when
dropped or
Intermittent
support DP alternate mode.
power charging.
alternate mode.
15 V/20 V charging profiles.
adaptor.
adaptor, it may not charge with the USB-C
connection.
or the adapter that comes with the product.
device is over 90 W.
or the adapter that comes with the product.
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.
network is connected, keeps the power button
On.