Ricoh Pro C901 Technical Bulletin page 423

Model:
Aries-P1.5/C1.5, AG-P1/C1, AGL-P1/C1
What are the major problems caused by toner degradation?
Developer will last for its prescribed PM yield of 1200Kp.
Do not replace the developer when encountering the following problems as these
problems are caused by toner degradation, not developer degradation.
Symptom
a) Scratched
image
b) Uneven
density
c) Mottled
effect
d) Toner
scattering
e) Clogged
doctor gap
T
echnical
Cause
Change in the charge applied
to the toner affects the
development capacity and
transferability.
Toner transfer conditions for
LE and TE are set incorrectly.
Change in the charge applied
to the toner affects the
development capacity and
transferability.
Transferability reduces under
the following conditions:
- Printing in FC following a
long B/W job
- Paper conditions
Low toner fluidity in the
development unit (= high
toner concentration) disables
the sensor to properly detect
the toner amount.
* Incorrect initial developer
installation is also a possible
cause.
Low toner fluidity in the
development unit (= high
toner concentration) causes
toner clumps to form that clog
the doctor gap.
B
ulletin
Date:
29-Nov-13
Solution
Replace with fresh toner.
Optimize the paper
settings with Advanced
setting in Paper Library
Replace with fresh toner.
User adjustment #0220
Adjust Density
Difference Across Feed
Direction
Replace with fresh toner
for C,M,Y
Use a different paper
Optimize controller
settings
Confirm proper
developer replacement
Replace with fresh toner
Clean the doctor gap
Remove toner clumps
PAGE: 2/3
No.:
RM077098
RTB
RM077077b
RM077032a
RM077077b
Adjustment
Settings for
Skilled
Operators
RM077077b
RM077095
RM077072c
RM077077b
RM077031b