Canon imageRUNNER ADVANCE C5000 Series Technical Workbook page 232

YMC
13) Remove the 2 screws [1] to detach the drum drive unit (Bk) [2]. When the drum drive unit
(Y) and (M) are removed, this work is not required.
14) Remove the 4 screws [1] to detach the duct [2].
15) Remove the 2 screws [1] to detach the gear cover [2].
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