Kyocera TASKalfa 7002i Service Manual page 1153

J7310: BF eject sensor stay jam at tri-folding
Object: 4000-sheet finisher with the folding unit
The BF eject sensor does not turn off after passing the certain time since it turned on during the tri-fold opera-
tion.
Step Check description
1 Checking the BF tray
2 Checking the paper con-
veying parts
3 Checking the BF eject sen-
sor
4 Checking the BF main
PWB
5 Checking the DF main
PWB
Assumed cause
The BF tray is not properly
attached.
The roller, guide, etc. are
not properly attached or
they are dirty, deformed or
worn down.
The BF exit sensor does
not properly operate.
The connector is not prop-
erly connected or the wire
or PBW is faulty.
The connector is not prop-
erly connected or the wire
or PBW is faulty.
7-293
Measures
Remove the paper and reat-
tach the BF tray.
Clean and correct the con-
veying parts such as the
roller or the guide, and reat-
tach them. If not repaired,
replace them.
Turn the BF exit sensor on
and off manually and check
the indication at U241 [Book-
let] > [Eject]. If the BF exit
sensor does not properly
operate, clean and reattach it
and reinsert the connector. If
not repaired, replace it.
Reconnect all the connector
to the BF main PWB. Then,
fix or replace the wires if they
are pinched by other part or if
they have any damage.
When the issue is not
resolved, replace the BF
main PWB.
Reconnect all the connector
to the DF main PWB. Then,
fix or replace the wires if they
are pinched by the other part
or if they have any damage.
When the issue is not
resolved, replace the DF
main PWB.
2WA/2NJ/2RK
Reference
Executing
U241
Detaching
and reat-
taching the
DF main
PWB