Canon EOS RP Instruction Manual page 592

Sensor Cleaning
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.
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1
Setting the power switch to <2>.
2
Remove the lens and clean the
sensor.
3
End the cleaning.
Attach the lens or body cap.
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