Dell C6522QT User Manual page 68

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