Kyocera TASKalfa 7002i Service Manual page 1283

Step Check description
2 Firmware upgrade
3 Checking the engine PWB
4 Replacing the engine PWB The engine PWB is faulty.
C6920: IH core 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 IH core fan
motor
3 Firmware upgrade
4 Replacing the front PWB
5 Replacing the engine PWB The engine PWB is faulty.
Assumed cause
The firmware is not the lat-
est version.
The engine PWB is not
properly attached. Or, the
connector is not properly
connected.
Assumed cause
The connector is not prop-
erly connected. Or, the
wire is faulty.
The IH core fan motor
does not properly operate.
The firmware is not the lat-
est version.
The front PWB is faulty.
7-423
Measures
Upgrade the engine firmware
to the latest version
Fix the engine PWB with the
screw to make sure the
grounding and reinsert the
connector on the engine
PWB all the way.
Replace the engine PWB.
Measures
Execute U037 [IH Coil]. If the
fan motor does not properly
operate, clean the terminal of
the following wire connectors
and reconnect the connec-
tors. Replace the wire when it
has no continuity.• IH core fan
motor - Front PWB?• Front
PWB - Engine PWB
Clean the IH core fan motor
and remove foreign objects if
adhered. If not repaired,
replace the IH core fan motor.
Upgrade the engine firmware
to the latest version
Replace the front PWB.
Replace the engine PWB.
2WA/2NJ/2RK
Reference
Firmware
Update
Detaching
and reat-
taching the
engine
PWB
Detaching
and reat-
taching the
engine
PWB
Reference
Wiring dia-
gram
Firmware
Update
Detaching
and reat-
taching the
engine
PWB