Repeated Spots Or Lines On Prints; Dark Vertical Line In Print - Ricoh G104 Service Manual

4.3.5 REPEATED SPOTS OR LINES ON PRINTS

Symptom
The same spots or lines
appear at regular intervals.
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 IN PRINT

Symptom
A dark line appears. The line
is parallel to the paper feed
direction.
Of one CMY color
Of any color (not C, M,
or Y)
SM
CÓPIA NÃO CONTROLADA
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
Possible cause
Defective PCU
Dust in the laser beam path
Defective transfer belt unit
Defective fusing unit
4-23
CÓPIA NÃO CONTROLADA
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.
Necessary actions
Replace the PCU.
Clean the laser beam path.
Replace the transfer belt
unit.
Replace the fusing unit.
G104