Ricoh Pro C901 Technical Bulletin page 447

echnical ulletin
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Model: Date: No.:
Aries P1.5/C1.5, Aegis C1/P1 05-Feb-14 RM077104
Fastening the drum knob with the drum cleaning unit installed will cause the drum cleaning
unit to apply pressure to the drum and narrow the PG at the front side.
Procedure to fasten the drum knob with the tool
1. Insert the tool into the drum knob.