Kyocera TASKalfa 7002i Service Manual page 1294

C7460: Developer shutter error
The power is turned on when the developer shutter is locked.
Step Check description
1 Checking the developer
shutter
2 Checking the connection
3 Checking the developer
shutter sensor
4 Firmware upgrade
5 Replacing the front PWB
6 Replacing the engine PWB The engine PWB is faulty.
C7470: Toner collection fan motor 1 error
The lock-up is detected for 5s continuously while the toner collection fan motor 1 is driving.
Step Check description
1 Checking the connection
2 Replacing the toner collec-
tion box
3 Firmware upgrade
4 Replacing the engine PWB The engine PWB is faulty.
Assumed cause
The developer shutter is
locked.
The connector is not prop-
erly connected. Or, the
wire is faulty.
The developer shutter sen-
sor is not properly attached
or faulty.
The firmware is not the lat-
est version.
The front PWB is faulty.
Assumed cause
The connector is not prop-
erly connected. Or, the
wire is faulty.
The toner collection fan
motor is faulty.
The firmware is not the lat-
est version.
7-434
Measures
Unlock the developer shutter.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • Developer shutter
sensor - Front PWB?• Front
PWB - Engine PWB
Reattach the developer shut-
ter sensor. If not repaired,
replace the sensor.
Upgrade the engine firmware
to the latest version
Replace the front PWB.
Replace the engine PWB.
Measures
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • Toner collection
fan motor 1 - Engine PWB
Execute U037 [Toner]. If the
operation is faulty, replace
the toner collection box.
Upgrade the engine firmware
to the latest version
Replace the engine PWB.
2WA/2NJ/2RK
Reference
Wiring dia-
gram
Firmware
Update
Detaching
and reat-
taching the
engine
PWB
Reference
Wiring dia-
gram
Firmware
Update