Ricoh Pro C901 Technical Bulletin page 392

Reissued:05-Mar-14
Model:
Aries-P1.5/C1.5
5. Check if the aperture (indicated in blue) is clearly visible as in the photos below.
Disposal of excess developer is disabled when this aperture is clogged.
When to do the procedure
 EM
 PM
According to information obtained from the field, toner clogging could occur in 1 week if
the print volume is high.
Therefore, if allowed, it is recommended to carry out the check on a weekly basis.
Reference
Drum scratches / Bias error caused by toner clumps at the rear side of the unit
Due to the nature of the developer flow inside the development unit, excess developer
in the unit causes toner to accumulate at the rear side (lower auger) of the
development roller.
Toner accumulation results in forming toner clumps that scratch the surface of the
drum.
Excessively scratched drum could cause SC 320~323 (Development bias: high voltage
error: KCMY).
echnical
T
Rear side
ulletin
B
Date:
01-Mar-13
Aperture
Flow
Front side
PAGE: 3/5
No.:
RM077086c