Dark Vertical Line On Prints - Ricoh Z-P2 Field Service Manual

6. Troubleshooting
Interval
At intervals of 82 mm (3.23
inches)

Dark Vertical Line on Prints

Symptom
A dark line appears. The line is
parallel to the paper feed
direction of one CMY color.
A dark line appears. The line is
parallel to the paper feed
direction of any color (not C, M,
or Y).
White Horizontal Lines or Bands
Symptom
White lines or bands appear in
images of all toner colors.
620
Possible cause
Defective image transfer belt drive
roller or image transfer belt idling
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
Necessary actions
Replace the image transfer
belt drive roller or image
transfer belt idling 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.