If dusts adhere to the image sensor and dust spots appear on the images, you can clean the image sensor yourself with a camera blower. Before cleaning the sensor, detach the lens from the camera.
The surface of the image sensor is extremely delicate. If the sensor needs to be cleaned directly, having it done by a Canon Service Center is recommended.
1
2
3
4
Select [Clean manually].
Under the [52] tab, select [Clean manually], then press <0>.
Select [OK].
Select [OK], then press <0>.
XIn a moment, the reflex mirror will lockup and the shutter will open.
Clean the sensor.
End the cleaning.
Set the power switch to <2>.
If you use a battery, make sure it is fully charged.
For the power source, using AC Adapter Kit
200