Kyocera TASKalfa 7002i Service Manual page 1315

C8210: DF staple motor front/rear error
Object: 4000-sheet finisher
The home position is not detected when passing 3s while returning to the home position at the initial opera-
tion.
Step Check description
1 Checking the DF staple
unit
2 Checking the DF staple
unit drive components
3 Checking the connection
4 Replacing the DF staple
motor
5 Checking the DF staple
sensor
6 Replacing the DF main
PWB
Assumed cause
The DF staple unit is not
assembled properly.
The DF staple unit drive
parts are not properly
attached or faulty.
The connector is not prop-
erly connected. Or, the
wire is faulty.
The DF staple motor is
faulty.
The DF staple sensor is
not properly attached or
faulty.
The DF main PWB is
faulty.
7-455
Measures
If the DF staple unit is not
shifted manually back and
forth, repair the part that
restricts the operation.
Reattach the DF staple unit
drive parts. If not repaired,
replace the parts.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • DF staple motor -
DF main PWB • DF staple
sensor - DF main PWB
Execute U240 [Motor] > [Sta-
ple]. If the DF staple motor
does not properly operate,
replace the DF staple unit.
Reattach the DF staple sen-
sor. Then, replace the DF sta-
ple unit if the sensor is not
fixed.
Replace the DF main PWB.
2WA/2NJ/2RK
Reference
Wiring dia-
gram
Detaching
and reat-
taching the
DF staple
unit
Detaching
and reat-
taching the
DF staple
unit
Detaching
and reat-
taching the
DF main
PWB