Nikon D700 - Manual (Page 421)

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❚❚Manual Cleaning
If foreign matter can not be removed from the low-pass filter using
the Clean image sensor (pg. 392) option in the setup menu, 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. If the battery level is below J
(60 %), turn the camera off and insert a fully-charged EN-EL3e
battery or connect an optional EH-5a or EH-5 AC adapter.
2
Select
Lock mirror up for cleaning.
Remove the lens and turn the camera on.
Highlight Lock mirror up for cleaning
in the setup menu and press 2 (note
that this option is not available at battery
levels of J or below).
3
Press J.
The message shown at right will be
displayed in the monitor and a row of
dashes will appear in the control panel
and viewfinder. To restore normal
operation without inspecting the low-
pass filter, turn the camera off.