Repeated Spots Or Lines On Prints; Dark Vertical Line On Prints; White Horizontal Lines Or Bands - Ricoh IM C300 Service Manual

Troubleshooting for Image Quality Problems

6.12.11 REPEATED SPOTS OR LINES ON PRINTS

The same spots or lines appear at regular intervals.
Interval
At intervals of 33.6 mm (1.32 inches)
At intervals of 20.9 mm (0.82 inches)
At intervals from 55.0 (end) to 55.4 (center)
mm (from 2.16 to 2.18 inches)
At intervals of 75.4 mm (2.96 inches)
At intervals of 78.5 mm (3.09 inches)
At intervals of 78.5 mm (3.09 inches)
At intervals of 40.82 mm (1.60 inches)

6.12.12 DARK VERTICAL LINE ON PRINTS

Symptom
A dark line in one CMY color appears. The line is
parallel to the paper feed direction.
A dark line in any color (not C, M, or Y) appears.
The line is parallel to the paper feed direction.

6.12.13 WHITE HORIZONTAL LINES OR BANDS

Symptom
White lines or bands appear in
images.
D0CA/D0C9/D0C8/D0CB
Possible cause
Defective charge
roller
Defective
development roller
Defective paper
transfer roller
Defective OPC drum
Defective pressure
roller
Defective fusing belt
Defective image
transfer roller
Possible cause
Defective PCDU
Dust in the laser
beam path
Defective image
transfer belt unit
Defective fusing unit
Possible cause
Defective PCDU
Defective image transfer
belt unit
Defective paper transfer
roller
6-148
Necessary actions
Replace the PCDU.
Replace the PCDU.
Replace the paper transfer
roller unit.
Replace the PCDU.
Replace the pressure roller
or fusing unit.
Replace the fusing unit.
Replace the image transfer
roller.
Necessary actions
Replace the PCDU.
Clean the laser beam
path.
Replace the image
transfer belt unit.
Replace the fusing
unit.
Necessary actions
Replace the PCDU.
Replace the image transfer
belt unit.
Replace the paper transfer
roller.
SM