Canon EOS 1D MkII Instruction Manual page 41

¡
Be sure not to turn off the camera while cleaning the CMOS sensor. If the
power is turned off, the shutter will close and the shutter curtains might
be damaged.
¡
Use a blower not attached with a brush. The brush can scratch the
CMOS sensor.
¡
Do not insert the blower tip inside the camera beyond the lens mount. If
the power goes out, the shutter curtains will close and the blower tip may
damage then.
¡
Never use canned air or gas to clean the sensor. The blowing force can
damage the sensor or the spray gas can freeze on the sensor.
Press the shutter button
4
completely.
The mirror will lock up and the shutter
s
will open.
Cleaning the CMOS Sensor
5
¡Use a rubber blower to carefully blow
away any dust on the surface of the
CMOS sensor.
Exit the sensor cleaning.
6
¡Turn the <
The camera will turn off, the shutter
s
will close, and the mirror will go back
down.
¡Set the <
camera will be ready to shoot.
4
> switch to <
4 1
> switch to <
2
>.
>. The
41