Ricoh M C250FW, Field Service Manual

Page: 247 / 324

6.Troubleshooting
235
Horizontal Lines
Problem Cause Details Solution
Color streaks occur
horizontally at 27 mm
intervals.
There is a problem with
the development roller.
Can occur at the
beginning of machine
use or over time.
Replace the AIO.
Fine horizontal lines appear. There is a problem with
the image transfer unit.
The problem presents
over time.
Check the ITB or
replace the
image transfer
unit.
White streaks occur
horizontally at 27 mm
intervals.
There is a problem with
the development roller.
Can occur at the
beginning of machine
use or over time.
Replace the AIO.
Horizontal
black lines
occur at
regular
intervals
27 mm
intervals
There is a problem with
the development roller.
Can occur at the
beginning of machine
use or over time.
Replace the AIO.
60
mm intervals
Paper dust or other
contaminants are at the
contact point of the drive
roller, resulting in
insufficient bias for toner
transfer to paper at drive
roller pitch.
The problem presents
over time.
Clean below the
paper transfer
roller and
registration roller
to remove paper
dust.
76 mm
intervals
OPC drum may have
been accidentally
exposed to ambient light.
•
AIO was
replaced while
machine was
accidentally
exposed to
strong light.
•
Top cover was
left open,
exposing the
OPC drum to
strong overhead
light.
•
Can occur at the
beginning.
Leave the AIO in
the machine and
wait for the
problem to
resolve itself.
Horizontal
white lines
27 mm
intervals
There is a problem with
the development roller.
Can occur at the
beginning of machine
Replace the AIO.