Repeated Spots Or Lines On Prints; Dark Vertical Line On Prints - Ricoh G190 Service Manual

4.3.5 REPEATED SPOTS OR LINES ON PRINTS

The same spots or lines appear at regular intervals.
Interval
At intervals of 35.0 mm
(1.38 inches)
At intervals of 35.8 mm
(1.41 inches)
At intervals of 40.5 mm
(1.59 inches)
At intervals of 41.1 mm
(1.62 inches)
At intervals of 47.1 mm
(1.86 inches)
At intervals of 56.5 mm
(2.23 inches)
At intervals of 72.8 mm
(2.87 inches)
At intervals of 82.2 mm
(3.24 inches)
At intervals of 82.5 mm
(3.25 inches)
At intervals of 94.2 mm
(3.71 inches)
At intervals of 141.4 mm
(5.57 inches)

4.3.6 DARK VERTICAL LINE ON PRINTS

SM
Possible cause
Defective charge roller
Defective OPC cleaning brush
roller
Defective belt entrance roller
Defective belt transfer roller
Defective toner mixing auger
Defective development roller
Defective belt tension roller
Defective transfer belt drive
roller
Defective transfer roller
Defective OPC drum or
pressure roller
Defective fusing belt
4-47
Troubleshooting Guide
Necessary actions
Replace the PCU.
Replace the PCU.
Replace the transfer belt
unit.
Replace the transfer belt
unit.
Replace the PCU.
Replace the PCU
Replace the transfer belt
unit.
Replace the transfer belt
unit.
Replace the transfer roller.
Replace the PCU or the
fusing unit
Replace the fusing unit.
G190