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Service Bulletin
SB Number:
SB 2H7-044
Creation Date: 16/11/2010
Paper jam J31/J4X due to wrapped paper around the primary
Subject:
transfer belt
Model: TASKalfa250ci/300ci/400ci/500ci/552ci
Phenomena The paper may be wrapped around the Primary transfer belt after the primary transfer process.
Under this condition paper jam J31 (Misfeed around the transfer belt) or paper jam J4X
(Misfeed in the fuser section: X is the paper feeding source number) may be displayed
depending on the properties of the paper (Weak stiffness, Upward curl, Thinness).
Paper jam details Paper jam J31 will be displayed when the leading edge of the paper is wrapped around the
primary transfer belt.
Paper jam J4X will be displayed when the folded paper is wrapped around the Primary transfer
belt with the separation failure in the middle section of the paper while the leading edge of the
paper enters into the front of the fuser section. (Refer to page 2 for the examples of the above
mentioned paper jams)
Depending on the paper wrapping condition, the paper jam indication may disappear by opening
or closing the cover (Even if the paper is not removed). In case the drive continues under this
condition, the paper may enter the inner part of the Primary transfer belt and then the cleaning
failure at the Primary transfer belt may occur.
Solution To prevent the above mentioned paper jams and the wrapping of the paper around the Primary
transfer belt, the paper separation lms have been afxed between the guide pulleys at the
left side of the Primary transfer belt.
The paper separation lm (2 sheets of the lm guide belt A and 2 sheets of the lm guide
belt B or 3 sheets of the lm guide belt B) and the instruction leaet (A/B) have been bundled
with the service part Primary transfer belt unit and the MK kit A.
Parts
No. Old Parts
No.
1 302H793226
2H793226
2 302JZ93076
2JZ93076
3 302KY93151
2KY93151
4 ------------ 302H721670
5 ------------ 302H721680
Part notes: *1. Parts transfer belt L unit: 2 pieces of the lm guide A and 2 pieces of the lm guide B are afxed.
*2. Parts transfer belt H unit/Parts transfer belt unit: 3 pieces of the lm guide B are afxed.
Classication
Field measure When the above mentioned phenomena occur, install the bundled guide pulley and afx the paper
New Parts
No.
302H793227
2H793227
302JZ93077
2JZ93077
302KY93152
2KY93152
2H721670
2H721680
Entire stock rework
separation lm after cleaning the surface under it with cleaning alcohol. Check afterwards that the
paper separation lm does not make contact the primary transfer belt.
Description Q’TY Interchange-
ability
Old New Old New
PARTS TRANSFER BELT H
UNIT (*2)
PARTS TRANSFER BELT L
UNIT (*1)
PARTS TRANSFER BELT
UNIT
+FILM GUIDE BELT A (*1
and *2)
+FILM GUIDE BELT B (*2) - 1 - O - TASKalfa400ci/
In-eld modication at next visit
1 1 X O O TASKalfa400ci/
1 1 X O O TASKalfa250ci/
1 1 X O O TASKalfa552ci
- 1 - O - TASKalfa250ci/
In-eld modication by case
X
SP Applicable
model(s)
500ci
300ci
300ci/400ci/
500ci/552ci
500ci/552ci
No modication necessary
KMIS Service Department, Kyocera Mita Europe A283 / SB 2H7-044
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Service Bulletin
Serial numbers of affected machines
Type Serial number
TASKalfa250ci QJK0926915
TASKalfa300ci/400ci/552ci Not available
TASKalfa500ci QHW0902283
Machines produced after the above mentioned
serial numbers, should not have the above mentioned
phenomena.
Old condition: Cross section of the left side of the primary transfer belt.
Guide pulley
+ 8.75mm
Serial numbers of affected units
Type Serial number
MK-865A for the TASKalfa250ci/300ci QJP0901637
MK-855A for TASKalfa400ci/500ci QJR0901718
MK-856A for TASKalfa552ci Not available
Units produced after the above mentioned serial
numbers, should not have the above mentioned
phenomena.
New condition: Cross section of the left side of the primary transfer belt.
Film guide A/B
Guide pulley
+ 1.35mm
The narrow space between the primary transfer belt and the guide pulley
due to the added paper separation lm (Film guide A/B) prevents paper from
wrapping around the primary transfer belt..
KMIS Service Department, Kyocera Mita Europe A283 / SB 2H7-044
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