Ricoh M C250FW, Field Service Manual

Page: 250 / 324

6.Troubleshooting
238
Problem Cause Details Solution
appear at 27 mm
(or 81 mm)
intervals
Note: 81 mm = 27
mm × 3 pitch
correctly. of machine use or over
time.
the AIO.
White spots
appear at 25 mm
intervals
There is a problem with
the image transfer unit.
The problem presents over
time.
Check the ITB or
replace the image
transfer unit.
Uneven image
density at left, right
or front, back of
the paper
Toner in the toner unit
temporarily not applied
evenly.
Can occur when printing
light image areas
repeatedly.
The problem presents over
time.
Remove and reinstall
the AIO.
There are irregularities on
the surface of the ITB.
•
Can occur with
continuous printing of
the same kind of
image.
•
The problem presents
over time (70 K or
more).
Check the ITB or
replace the image
transfer unit.
Uneven gloss
appears at the
leading edge of
solid coverage
Hot offset
•
Thin paper
(transparency)
•
The paper fibers are
across the width of the
paper.
•
Can occur at the
beginning of machine
use or over time.
•
Use thicker
paper.
•
Use paper with
fibers running
the length of the
paper.
Colors different
(some dark, others
light)
If the image density mode
is adjusted during a job,
the density will change
during the job.
An adjustment to the
density should be done
after 200 sheets have
printed.
Can occur at the beginning
of machine use or over
time.
Do manual color shift
adjustment before
feeding paper:
Printer model:
Menu key > System
settings > Color
Den/Reg
MF model: Settings
icon > System
settings > Color