Nikon D4 - Manual (Page 435)

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Cleaning : When cleaning the camera body, use a blower to gently remove
dust and lint, then wipe gently with a soft, dry cloth. After using the
camera at the beach or seaside, wipe off any sand or salt using a cloth
lightly dampened in pure water and then dry the camera thoroughly. In
rare instances, static electricity may cause the LCD displays to light up or
go dark. This does not indicate a malfunction, and the display will soon
return to normal.
The lens and mirror are easily damaged. Dust and lint should be gently
removed with a blower. When using an aerosol blower, keep the can
vertical to prevent discharge of liquid. To remove fingerprints and other
stains from the lens, apply a small amount of lens cleaner to a soft cloth
and wipe the lens carefully.
See “The Low-Pass Filter” ( 0 399) for information on cleaning the low-pass
filter.
Lens contacts : Keep the lens contacts clean.
Do not touch the shutter curtain : The shutter curtain is extremely thin and easily
damaged. Under no circumstances should you exert pressure on the
curtain, poke it with cleaning tools, or subject it to powerful air currents
from a blower. These actions could scratch, deform, or tear the curtain.
The shutter curtain may appear to be unevenly colored, but this has no
affect on pictures and does not indicate a malfunction.
Storage : To prevent mold or mildew, store the camera in a dry, well-
ventilated area. If you are using an AC adapter, unplug the adapter to
prevent fire. If the product will not be used for an extended period,
remove the battery to prevent leakage and store the camera in a plastic
bag containing a desiccant. Do not, however, store the camera case in a
plastic bag, as this may cause the material to deteriorate. Note that
desiccant gradually loses its capacity to absorb moisture and should be
replaced at regular intervals.
To prevent mold or mildew, take the camera out of storage at least once a
month. Turn the camera on and release the shutter a few times before
putting it away.
Store the battery in a cool, dry place. Replace the terminal cover before
putting the battery away.