Nikon D90 - Manual (Page 268)

248
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Caring for the Camera and Battery:
Cautions
Do not drop : The product may malfunction if
subjected to strong shocks or vibration.
Keep dry : This product is not waterproof, and
may malfunction if immersed in water or
exposed to high levels of humidity. Rusting
of the internal mechanism can cause
irreparable damage.
Avoid sudden changes in temperature : Sudden
changes in temperature, such as occur when
entering or leaving a heated building on a
cold day, can cause condensation inside the
device. To prevent condensation, place the
device in a carrying case or plastic bag before
exposing it to sudden changes in
temperature.
Keep away from strong magnetic fields : Do not use
or store this device in the vicinity of
equipment that generates strong
electromagnetic radiation or magnetic fields.
Strong static charges or the magnetic fields
produced by equipment such as radio
transmitters could interfere with the monitor,
damage data stored on the memory card, or
affect the product’s internal circuitry.
Do not leave the lens pointed at the sun : Do not
leave the lens pointed at the sun or other
strong light source for an extended period.
Intense light may cause the image sensor to
deteriorate or produce a white blur effect in
photographs.
Turn the product off before removing or disconnecting
the power source
: Do not unplug the product or
remove the battery while the product is on or
while images are being recorded or deleted.
Forcibly cutting power in these
circumstances could result in loss of data or
in damage to product memory or internal
circuitry. To prevent an accidental
interruption of power, avoid carrying the
product from one location to another while
the AC adapter is connected.
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” (pp. 244, 246) 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.