Ricoh Pro C901 Technical Bulletin page 330

Reissued: 28th-Sep-12
Model:
AG-P1/C1, AGL-P1/C1, Aries-P1.5/C1.5
If the development unit is not correctly installed, pull out the PCDU and slightly
reposition the drum so that the internal and external gears are engaged properly.
Do not attempt to forcefully fasten the (cross-shaped) drawer stop knob by shoving
in the unit. Doing so will NOT help install the unit completely but will only damage
the teeth of the internal gear.
When the gears are not engaged properly, the drum cleaning unit pushes the drum
towards the direction in which the PG is narrowed. Printing in this condition will cause
toner to adhere to the development rollers and generate scratches on the drum surface.
The following SCs may occur if the drum surface has been scratched and reveals the
aluminum substrate.
Development bias: high voltage error
If the above SC occurs and heavy scratches are observed on the drum surface, replace
the drum with a new one.
echnical
T
SC error name
ulletin
B
Date:
06-Dec-10
PAGE: 3/6
No.:
RG178128c
Color SC code
K 320
C 321
M 322
Y 323