Kyocera TASKalfa 7002i Service Manual page 1189

J9300: DP backside timing sensor non arrival jam
Object: Document processor
The DP backside timing sensor does not turn on when passing the certain pulse after the DP feed sensor
turns on.
Step Check description
1 Checking the paper path
2 (When the original is
skewed) Checking the DP
feed belt
3 (When the original is
skewed) Relocating the
original width guides
4 (When the original is
skewed) Checking the
conveying guide
5 (When the original convey-
ing delays) Checking the
DP conveying roller
6 (When the original convey-
ing delays) Checking the
DP top cover
7 Checking the original
8 Checking the original
9 Checking the original
Assumed cause
The original is caught up
by a piece of paper.
The paper conveying per-
formance of the DP feed
belt is not enough.
The location of the original
width guides and the origi-
nal size are mismatched.
The original is hooked with
the DP conveying guide.
The paper conveying per-
formance of the DP con-
veying roller is insufficient.
The DP top cover is
deformed.
The leading edge of the
original is folded.
The original gets curled
downward or waved.
The original out of specifi-
cation is used.
7-329
Measures
A piece of paper or the for-
eign objects are adhered on
the conveying path, or if the
parts such as the guide or
the actuator has burrs,
remove them.
Clean the DP feed belt sur-
face. If worn down, replace it.
Align the original width
guides to the original size.
Reattach the DP conveying
guide. If there is a burr on the
paper conveying face of the
guide, remove it. If not
repaired, replace it.
Clean the DP conveying
roller surface. If worn down,
replace it.
Check if the DP top cover is
securely closed. If it cannot
be closed due to deformation,
replace it.
Remove the folded original.
Fix or replace paper. If it is
difficult to replace, relocate
the leading edge with the
trailing edge of the paper to
feed or turn over the paper,
and reinstall it.
Explain users to use the origi-
nal within the specifications.
2WA/2NJ/2RK
Reference
Detaching
and reat-
taching the
DP for-
warding
pulley and
the DP
feed belt