Nikon Z8 User Manual page 969

Image Sensor Cleaning
Dirt or dust entering the camera when lenses are exchanged or the body cap is removed may adhere
to the image sensor and affect your photographs. The "clean image sensor" option vibrates the sensor
to remove dust.
The image sensor can be cleaned at any time from the menus, or cleaning can be performed
automatically when the camera is turned off. If image sensor cleaning fails to resolve the problem,
contact a Nikon-authorized service representative.
Using the Menus
For maximum effect, hold the camera in normal orientation (base
down).
Select [Clean image sensor] in the setup menu, then highlight
[Start] and press J to begin cleaning.
Camera controls cannot be used while cleaning is in progress. Do
not remove or disconnect the power source.
The setup menu will be displayed when cleaning is complete.
895
Caring for the Camera