Canon iR C6800 Series Service Manual page 925

The machine executes the following in the course of this cleaning mode item:
Stops drum idle rotation and magnet roller, and executes black band sequence.
Eecutes full speed rotation of the primary charging suction fan in an H/H environment.
Step 1
Clean the photosensitive drum as follows:
1) Draw out the process unit.
2) Take out the primary charging assembly.
3) Remove the 2 screws, and detach the charging assembly rail.
[1]
F-13-40
4) As shown in the figure, turn the photosensitive drum [1] counterclockwise while dry wiping its surface with lint
free paper [2].
[1]
F-13-41
Step 2
Replace the ITB cleaning blade and the photosensitive drum cleaning blade.
Description
The coating on the photosensitive drum will appear white in response to light (e.g., form a pen light). Removing the
coating from such an area will eliminate dots in the output.
[2]
[2]
Chapter 13
13-53