Kyocera TASKalfa 7002i Service Manual page 1231

C1450: PF multi-feeding sensor backup error (Side Multi Feeder)
1. Write data and read data does not match 3 times continuously when writing. 2. Block erase failed 3 times
continuously. 3. Writing does not complete when passing 200ms after starting writing.
Step Check description
1 Checking the connection
2 Firmware upgrade
3 Replacing the PF multi-
feeding sensors
4 Replacing the PF main
PWB
C1800: Main unit large capacity feeder communication error
Condition: The main unit does not install the paper feeder or the large capacity
feeder. Or, when turning the main power off and on while disconnecting the
connector of the cable from the side multi feeder, this service call error reappears. (It
might be caused by the large capacity feeder for the main unit.)
The communication error was detected 10 times continuously.
Step Check description
1 Firmware upgrade
2 Checking the connection
Assumed cause
The connector is not prop-
erly connected. Or, the
wire is faulty.
The firmware is not the lat-
est version.
The PF multi-feeding sen-
sor is faulty.
The PF main PWB is
faulty.
Assumed cause
The firmware is not the lat-
est version.
The connector is not prop-
erly connected. Or, the
wire is faulty.
7-371
Measures
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • PF multi-feeding
sensor (emitter) - PF main
PWB • PF multi-feeding sen-
sor (receiver) - PF main PWB
Upgrade the engine firmware
and the side multi feeder firm-
ware to the latest version.
Replace the PF multi-feeding
sensor (emitter) or the PF
multi-feeding sensor
(receiver).
Replace the PF main PWB.
(Side multi feeder)
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. • PF main PWB -
Engine PWB
2WA/2NJ/2RK
Reference
Wiring dia-
gram
Firmware
Update
Detaching
and reat-
taching the
PF main
PWB (Side
multi
feeder)
Reference
Firmware
Update
Wiring dia-
gram