J7810 Mail Box Eject Stay Jam - Kyocera TASKalfa 7002i Service Manual

Step Check description
6 Checking the MB main
PWB
7 Checking the DF main
PWB
J7810: Mail Box eject stay jam
Object: 4000-sheet finisher with the mail box
MB tray exit sensor 1 does not turn off when passing the certain time after MB tray exit sensor 1 turns on.
Step Check description
1 Checking the belt
2 Checking the MB tray
3 Checking MB tray eject
sensor 1
4 Checking the MB convey-
ing motor
Assumed cause
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.
Assumed cause
The belt and related parts
are not properly installed
or they are dirty, deformed
or worn down.
The MB tray is not properly
attached.
MB tray exit sensor 1 does
not properly operate.
The MB conveying motor
does not properly operate.
7-300
Measures
Reconnect all the connector
to the MB 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 DF sta-
ple relay 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.
Measures
Execute U240 [Mail Box] >
[Conv] to check the belt oper-
ation. If the belt does not
properly operate, correct the
belt and the neighboring parts
such as the feedshift claw
lever or the guide, etc. If not
repaired, replace them.
Reattach the MB tray.
Turn MB tray exit sensor 1 on
and off manually and check
the indication at U241 [Mail
Box] > [Eject]. If MB tray exit
sensor 1 does not properly
operate, clean and reattach it
and reinsert the connector. If
not repaired, replace it.
Execute U240 [Mail Box] >
[Conv]. If the MB conveying
motor does not properly oper-
ate, reattach it and reinsert
the connector. If not repaired,
replace it.
2WA/2NJ/2RK
Reference
Detaching
and reat-
taching the
DF main
PWB
Reference
Executing
U240
Executing
U241
Executing
U240