Kyocera TASKalfa 7002i Service Manual page 1345

F052: Panel engine program error
The panel program cannot start up.
Step Check description
1 Firmware upgrade
2 Resetting the main power
3 Checking the connection
4 Replacing the operation
panel main PWB
F186: Error detected in the video control section
The communication between the main PWB and the engine PWB is faulty.
Step Check description
1 Resetting the main power
2 Checking the FFC
3 Firmware upgrade
4 Replacing the main PWB
Assumed cause
The firmware is not the lat-
est version.
The panel RAM checksum
is faulty.
The connector is not prop-
erly connected or the wire
is faulty.
The operation panel main
PWB is faulty.
Assumed cause
The communication error
between the controller and
the engine occurs since
the power reset was imme-
diately done.
The FFC is not properly
connected, or it is faulty.
The firmware is not the lat-
est version.
The main PWB is faulty.
7-485
Measures
Upgrade the panel firmware
to the latest version.
Remove the original and
check the sensor. Next, turn
off the power switch and main
switch. Then, turn on the
main switch and power
switch when passing 5 sec-
onds.
Clean the connectors on the
operation panel main PWB
and reinsert the wire connec-
tors. If there is no continuity,
replace the wire.
Replace the panel main
PWB.
Measures
Remove the original and
check the sensor. Next, turn
off the power switch and main
switch. Then, turn on the
main switch and power
switch when passing 5 sec-
onds.
Reconnect the following FFC.
If the FFC terminal section is
deformed or the FFC is bro-
ken, replace the FFC. •
Engine PWB (YC9) - Main
PWB (YC43)
• Primary transfer belt unit -
Engine PWB
Replace the main PWB.
2WA/2NJ/2RK
Reference
Firmware
Update
Wiring dia-
gram
Detaching
and Reat-
taching the
operation
panel
PWB
Reference
Wiring dia-
gram
Firmware
upgrade
Replacing
the main
PWB