Canon ICAM62B Advanced User's Manual page 507

Manual Sensor Cleaning
Dust that could not be removed by automatic cleaning can be removed
manually with a commercially available blower or similar tool.
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
Set the power switch to <2>.
2
Remove the lens and clean the
sensor.
3
End the cleaning.
Attach the lens or body cap.
z
Sensor Cleaning
507