Dell S2422HZ User Manual page 78

Problem
Webcam image
looks grainy or
dark
Camera cannot
be focused
Webcam image
color is not
accurate
Webcam video
noise
Webcam was
working before
the Windows
update or driver
update
Webcam is
occupied and
cannot be used
Windows OS
level computer
volume change,
line out (when
you select
echo canceling
speakerphone)
volume cannot
be adjustable
Windows OS
level computer
mute, line out
(when you
select echo
canceling
speakerphone)
continue to
output audio
78 | Troubleshooting
What you
experience
Webcam image
looks grainy or
dark
Camera cannot
be focused
Webcam image
color is not
accurate
Webcam video
noise
Webcam was
working before
the Windows
update or driver
update
Webcam is
occupied and
cannot be used
Windows OS
level computer
volume change,
line out (when
you select
echo canceling
speakerphone)
volume should
be adjustable
Windows OS
level computer
mute, line out
(when you select
echo canceling
speakerphone)
should be mute.
Possible solutions
• Turn on the camera again. Adjust the
background environment.
• Increase ambient light > 20lux.
Adjust to suitable operating distance: 35 cm~70
cm.
Update to latest monitor firmware.
• Ensure webcam module is popped up.
• Reconnect or replace the USB cable.
• Roll back driver to fix it
• Restore Windows to an earlier restored point (if
users ever set it)
Turn off conference software A before you run
conference software B.
You can adjust the volume by adjusting the
volume bar on the player APP (like media player),
not Windows OS level or adjust the volume
through the line out external speaker device.
Select player APP (like media player) mute icon
to mute or adjust the mute through the line out
external speaker device.