DELL C2722DE - Инструкция по эксплуатации - Страница 111

Troubleshooting

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111

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 different video formats (aspect ratio) of 

DVDs, the monitor may display in full screen.

• Run the built-in diagnostics.

No image 
when using DP 
connection to 
the PC

Blank screen

• Verify which DP standard (

C2422HE/

C3422WE

:DP 1.1a or DP 1.2)(

C2722DE

:DP 1.1a 

or DP 1.4) is your Graphics Card certified to. 
Download and install the latest graphics card 
driver.

• Some DP 1.1a graphics card cannot support DP 

1.2(

C2422HE/C3422WE

),DP1.4(

C2722DE

) 

monitors. Go to OSD menu, under Input Source 
selection, press and hold DP select joystick key 
for 8 seconds to change the monitor setting 
from DP 1.2 to DP 1.1a, DP 1.4 to DP 1.1a 

No image 
when using 
USB Type-C 
connection 
to computer, 
laptop, and so 
on

Blank 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.