Ricoh MP C3004 Field Service Manual page 1424

2. Preventive Maintenance
Item
Sheet-through
exposure glass
PCU
PCU(K)
PCU(C,M,Y)
78
Yield
120K 300K
parts
C
400K 600K EM
C
R
Remarks
Clean with a
cleaning cloth.
Do not clean
with alcohol.
Doing so may
leave a whitish
trace that affects
image scanning.
MP C3004/
C3504:
Target yield:
175K
MP C4504/
C5504/C6004:
Target yield:
270K