Kyocera TASKalfa 7002i Service Manual page 1284

C6930: Rear fuser fan motor error
The lock-up is detected for 5s continuously while the fan motor is driving.
Step Check description
1 Checking the connection
2 Checking the rear fuser fan
motor
3 Firmware upgrade
4 Replacing the engine PWB The engine PWB is faulty.
C6950: IH PWB communication error
The initial communication between the IH PWB and the engine PWB is not established. (10 times of retries
are executed in 30ms interval.)
Step Check description
1 Resetting the main power
2 Checking the connection
3 Checking the connection
Assumed cause
The connector is not prop-
erly connected. Or, the
wire is faulty.
The rear fuser fan motor
does not properly operate.
The firmware is not the lat-
est version.
Assumed cause
The power startup delays.
The connector is not prop-
erly connected. Or, the
wire is faulty.
The connector is not prop-
erly connected. Or, the
wire is faulty.
7-424
Measures
Execute U037 [Fuser Cool-
ing]. If the fan motor does not
properly operate, clean the
terminal of the following wire
connectors and reconnect the
connectors. Replace the wire
when it has no continuity.•
Rear fuser fan motor - Engine
PWB
Clean the rear fuser fan
motor, and remove the for-
eign objects if they adhere
there. If not repaired, replace
the fan motor.
Upgrade the engine firmware
to the latest version
Replace the engine PWB.
Measures
Turn the power switch and
the main power switch off .
After 5s passes, turn the
main power switch and the
power switch on.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • IH PWB - Engine
PWB
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • LVU - IH PWB
2WA/2NJ/2RK
Reference
Wiring dia-
gram
Firmware
Update
Detaching
and reat-
taching the
engine
PWB
Reference
Wiring dia-
gram
Wiring dia-
gram