Cleaning The Cmos Sensor - Canon EOS 20D Instruction Manual

Cleaning the CMOS sensor*
The image sensor is like the film in a film camera. If any dust or other
foreign matter adheres to the image sensor, it may show up as a dark
speck in the images.To avoid this, follow the procedure below to clean
the image sensor. Note that the image sensor is a very delicate
component. If possible, you should have it cleaned by a Canon Service
Center.
While you clean the image sensor, the camera must be turned on.
Using the AC Adapter Kit ACK-E2 (optional, see page 154) is
recommended. If you use a battery, make sure the battery level is
sufficient. Before cleaning the sensor, detach the lens from the camera.
_ Install the DO Coupler (p.22) or a
battery and turn the <_> switch
to <ON>.
":O,j_,j_ Select [Sensor clean.].
_ Turn the <O> dial to select [_'T
Sensor clean.], then press <.,_ >.
_ If you are using a battery with
sufficient power, the screen shown in
step 3 will appear.
_ If the battery is exhausted, a warning
message will appear and you will not
be able to proceed further. Either
recharge the battery or use a DC
coupler and start from step 1 again.
_:_! Select [OK].
_ Turn the <O> dial to select [OK],
then press <_>.
_* The mirror will lock up and the shutter
will open.
_ "CLEA n" will blink on the LCD panel.
36