Canon imagePRESS C800 Series Troubleshooting Manual page 56

Chapter 1
3) Clean the surface [A] of the drum cleaning blade [2] with lint-free paper [1] and apply the lubricant (Tospearl) onto the edge [B] that contacts to the drum after
cleaning.
4) Put the drum cleaning unit [1] and the drum (Bk) together with the 6 screws [2] by tightening them lightly just enough to hold them for a while.
5) Holding the both ends, rotate the drum [1] in the direction of the arrow for about a circuit.
6) Reinstall the drum cleaning unit and the drum (Bk) in reverse order from the step 2).
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