Kyocera TASKalfa 7002i Service Manual page 1288

Step Check description
2 Checking the connection
3 Replacing the LSU
4 Replacing the LSU relay
PWB
5 Firmware upgrade
6 Replacing the engine PWB The engine PWB is faulty.
Assumed cause
The FFC is not properly
connected, or it is faulty.
The LSU (LSU thermistor)
is faulty.
The LSU relay PWB is
faulty.
The firmware is not the lat-
est version.
7-428
Measures
Reconnect the following FFC.
If the FFC terminal section is
deformed or the FFC is bro-
ken, replace the FFC. • PD
PWB (Connects to the APC
PWB in the LSU) - LSU relay
PWB • LSU relay PWB -
Engine PWB
Replace the LSU.
Replace the LSU relay PWB.
Upgrade the engine firmware
to the latest version
Replace the engine PWB.
2WA/2NJ/2RK
Reference
Wiring dia-
gram
Detaching
and reat-
taching the
LSU
Firmware
Update
Detaching
and reat-
taching the
engine
PWB