Ricoh Aficio SP C440DN Field Service Manual page 621

[A]: Problems at regular intervals
[B]: Paper feed
The same spots or lines appear at regular intervals.
Interval
At intervals of 35 mm (1.38
inches)
At intervals of 33 mm (1.3
inches)
At intervals of 83 mm (3.27
inches)
At intervals of 94 mm (3.7
inches)
At intervals of 126 mm (4.96
inches)
At intervals of 141 mm (5.55
inches)
At intervals of 204 mm (8.03
inches)
At intervals of 795 mm (31.3
inches)
At intervals of 41 mm (1.61
inches)
Possible cause
Defective charge roller
Defective development roller
Defective paper transfer roller
Defective OPC drum
Defective fusing roller
Defective pressure roller
Defective fusing belt
Defective image transfer belt
Defective image transfer roller
Troubleshooting Guide
Necessary actions
Replace the PCDU.
Replace the PCDU.
Replace the paper transfer
roller unit.
Replace the PCDU.
Replace the fusing roller or
fusing unit.
Replace the pressure roller or
fusing unit.
Replace the fusing unit.
Replace the image transfer
belt or image transfer belt
unit.
Replace the image transfer
roller.
619