Canon LBP6230dw Manual page 185

2
Select [Options]
3
Click [OK].
The paper is fed slowly into the machine, and cleaning starts. The cleaning is done when the paper is completely ejected.
Cleaning cannot be cancelled once it starts. Wait until it finishes (approx. 90 seconds).
Cleaning from the Remote UI
You can also clean the fixing unit from the [Utility Menu] page of the Remote UI.
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[Utility] [Cleaning].
Cleaning