Black Spot / Color Point - Toshiba e-STUDIO 5540C Service Manual

8.5.3

Black spot / color point

<Symptoms>
Original mode
All modes Occurs cyclically in the
feeding direction
Pitch: 105mm
Perform procedures 3
and 4.
Occurs cyclically in the
feeding direction
Pitch: 1118mm
(Ratio of once every 3
sheets of A3/LD paper)
Perform procedures 1,
2 and 3.
Cause/Section Step
Transfer belt 1
2
3
4
5
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
ERROR CODE and TROUBLESHOOTING
Location
Check item
Is there any damage or
deformation on the surface of
the transfer belt?
Is there adhesion of foreign
matter on the transfer belt
surface?
Is there any foreign matter
inside the transfer belt?
Is there any breakage, or is
there adhesion of foreign
matter on the 2nd transfer
facing roller?
Is there any breakage, or is
there adhesion of foreign
matter on the transfer belt
cleaning facing rollers?
Phenomena
Fig.8-11
Measures
Replace the transfer belt.
Remove the foreign matter.
Remove the foreign matter.
Remove the foreign matter,
or replace the 2nd transfer
facing roller.
Remove the foreign matter,
or replace the transfer belt
cleaning facing roller.
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Remarks