Canon EOS 90D, Instruction Manual

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531
Sensor Cleaning
o While cleaning the sensor, never do any of the following. If the power
is cut off , the shutter will close and the refl ex mirror will go back down.
These may result in damaging the image sensor, shutter curtains, and
refl ex mirror.
•
Setting the power switch to <
2
>.
•
Removing or inserting the battery.
o
The surface of the image sensor is extremely delicate. Clean the sensor with
care.
o
Use a plain blower without any brush attached. A brush can scratch the
sensor.
o
Do not insert the blower tip inside the camera beyond the lens mount. If the
power is turned off , the shutter will close and the shutter curtains or refl ex
mirror may get damaged.
o
Never use pressurized air or gas to clean the sensor. Pressurized air may
damage the sensor, and sprayed gas may freeze on the sensor and scratch it.
o
If the battery level becomes low while cleaning the sensor, the beeper will
sound as a warning. Stop cleaning the sensor.
o
If a smudge that cannot be removed with a blower remains, having the sensor
cleaned by a Canon Service Center is recommended.