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Model:
Model U-P1
Subject:
Dirty spots on the prints
From:
1st Tech. Support Sec. Service Support Dept.
Classification:
Troubleshooting
Mechanical
Paper path
Other (
SYMPTOM
Dirty spots appear during early stages of printing after installation (around 200 prints or so).
CAUSE
The Mylar next to the cleaning roller in the image transfer belt cleaning unit was placed in
the opposite position. Refer to the following illustration. (Incorrect position: red, correct
position: blue)
These machines were picked up for the QA sample check after they were produced in the
production line. After the QA check, the cleaning unit was cleaned in the line. It is likely
that the mylars were moved to the opposite position during cleaning the ITB cleaning unit.
If the cleaning roller is rotated by turning the gear incorrectly during the cleaning stage, the
mylar is then in the opposite position.
T
B
echnical
Part information
Electrical
Transmit/receive
)
ulletin
Date:
25-Sep-03
Prepared by:
H.K.
Action required
Service manual revision
Retrofit information
PAGE: 1/2
No.:
RG071008
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