Ricoh Di-C1.5a Manual page 355

If you change the following parts, you must set the following SPs
to 1 before you turn the machine power off.
Development Unit only: 3902-001 (K), -002 (C), -003 (M), -004 (Y)
Drum Unit only: 3902-009 (K), -010 (C), -011 (M), -012 (Y)
Fusing Unit: 3902-014
Fusing Roller: 3902-015
Fusing Belt: 3902-016
Image Transfer Belt: 3902-013
Image Transfer Belt Cleaning Unit: 3902-017
Paper Transfer Roller: 3902-018
PCDU Toner Collection Bottle (if not full or near-full): 3902-019
Image Transfer Belt Toner Collection Bottle (if not full or near-full):
3902-020
Then, after you replace the parts, the PM counters will be reset
automatically when you turn the main power switch on again.
Check that the PM counters were reset correctly (SP 7-803).
If a PM counter was not reset, you can reset it manually (SP 7-
804).
Slide 355
Study the 'Before removing the old PM parts' and 'After installing the new PM
parts' procedures in the manual.
PM Counter Reset
355
Di-C1.5 Training