Kyocera TASKalfa 7002i Service Manual page 1170

J7920: DF staple motor jam
Object: 100-sheet staple finisher, 4000-sheet finisher
The home position cannot be detected when passing 600ms after the staple motor is started up.
Step Check description
1 Checking the staple
2 Checking the drive compo-
nents
3 Checking the connection
4 Replacing DF staple unit
5 Replacing DF staple relay
PWB
6 Replacing DF PWB
J7921: Bundle eject motor 1 jam
Object: 100-sheet staple finisher, 4000-sheet finisher
Change of the bundle eject HP sensor 1 is not detected when driving the bundle eject motor 1 for 3s in the
direction of the HP sensor change.
Step Check description
1 Checking the connection
Assumed cause
Staples are jammed.
The DF staple motor does
not rotate due to heavy
load.
The connector is not con-
nected properly, or the wire
is faulty.
DF staple unit is faulty.
DF staple relay PWB is
faulty.
The DF PWB is faulty.
Assumed cause
The connector is not con-
nected properly, or the wire
is faulty.
7-310
Measures
Remove jammed staples
from the staple cartridge.
Check if the DF staple motor
rotates manually. Replace the
DF staple unit if it does not
rotate smoothly due to the
damaged gear, etc.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors.
If there is no continuity,
replace the wire.
DF staple unit - DF staple
relay PWB
DF staple relay PWB - DF
PWB
Replace DF staple unit.
Replace DF staple relay
PWB.
Replace the DF PWB.
Measures
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors.
If there is no continuity,
replace the wire.
Bundle eject HP sensor 1 -
DF PWB
Bundle eject motor 1 - DF
PWB
2WA/2NJ/2RK
Reference
Service
Manual -
Section 8
'PWBs'
Detaching
and reat-
taching the
DF PWB
Reference
Service
Manual -
Section 8
'PWBs