Nikon Df - Manual (Page 351)

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❚❚ Manual Cleaning
If foreign matter can not be removed from the low-pass filter using
the Clean image sensor option in the setup menu (0 329), the
filter can be cleaned manually as described below. Note, however,
that the filter is extremely delicate and easily damaged. Nikon
recommends that the filter be cleaned only by Nikon-authorized
service personnel.
1
Charge the battery or connect an AC adapter.
A reliable power source is required when inspecting or
cleaning the low-pass filter. Turn the camera off and insert a
fully-charged battery or connect an optional AC adapter and
power connector. The Lock mirror up for cleaning option is
only available in the setup menu at battery levels over H.
2
Remove the lens.
Turn the camera off and remove the lens.
D
Image Sensor Cleaning
Using camera controls during startup interrupts image sensor cleaning.
Cleaning is performed by vibrating the low-pass filter. If dust can not be
fully removed using the options in the Clean image sensor menu,
clean the image sensor manually or consult a Nikon-authorized service
representative.
If image sensor cleaning is performed several times in succession,
image sensor cleaning may be temporarily disabled to protect the
camera’s internal circuitry.
Cleaning can be performed again after a
short wait.