Kyocera TASKalfa 7002i Service Manual page 1272

Step Check description
3 Firmware upgrade
4 Checking the connection
5 Replacing the fuser unit
6 Replacing the engine PWB The engine PWB is faulty.
7 Replacing the feed PWB
8 Checking the IH core
motor
9 Checking the connection
10 Replacing the IH unit
11 Replacing the IH PWB
Assumed cause
The firmware is not the lat-
est version.
The connector is not prop-
erly connected. Or, the
wire is faulty.
The temperature cannot
be detected properly due
to the heater broken or the
thermistor error.
The feed PWB is faulty.
The small size shield plate
of the IH core motor does
not shift to the proper posi-
tion.
The connector is not prop-
erly connected. Or, the
wire is faulty.
The IH unit is faulty.
The IH PWB is faulty.
7-412
Measures
Upgrade the engine firmware
to the latest version
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • Connector of the
fuser unit - Engine PWB •
Connector of the fuser unit -
IH PWB • IH PWB - Engine
PWB • IH PWB - Feed PWB
Replace the fuser unit.
Replace the engine PWB.
Replace the feed PWB.
Execute U030 [IH Core] and
check the IH core motor rota-
tion. If the motor does not
properly operate, repair it.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • IH unit - IH PWB
Replace the IH unit.
Replace the IH PWB.
2WA/2NJ/2RK
Reference
Firmware
Update
Wiring dia-
gram
Detaching
and reat-
taching the
fuser unit
Detaching
and reat-
taching the
engine
PWB
Wiring dia-
gram
Detaching
and reat-
taching the
IH unit
Detaching
and reat-
taching the
fuser IH
PWB