Kyocera TASKalfa 7002i Service Manual page 1338

(3) System Error (Fxxxx) Outline (1)
Error code
F000 Communication error between the main unit and CPU
F010 Program read error (SSD)
F020 System memory error (RAM reading/writing error or CPU memory error)
F021 System memory error (RAM reading/writing error or ASIC memory error)
F022 System memory error (RAM reading/writing error or ASIC memory error)
F040 Communication error between the main unit and CPU (Communication error between
the controller and the print engine)
F041 Communication error between the main PWB and the scanner engine
F050 Engine main program error
F051 Scanner engine program error
F052 Panel engine program error
F186 Error detected in the video control section
F278 Secondary power source error
Content of System Error (Fxxxx) Outline
F000: Communication error between the main unit and CPU
The panel cannot be detected since the CPU communication between the main PWB and the operation panel
main PWB is unavailable.
Step Check description
1 Resetting the main power
2 Checking the connection
3 Executing U021
4 Replacing the main PWB
Assumed cause
The communication
between the main PWB
and the operation panel
main PWB is faulty.
The connector is not prop-
erly connected. The wire or
the SATA cable is faulty.
The backup RAM data is
faulty.
The main PWB is faulty.
7-478
Contents
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.
Clean the terminal of the fol-
lowing SATA cable connector
and the wire connectors and
reconnect the connectors. If
there is no continuity, replace
the SATA cable or the wire. •
Main PWB - Operation panel
main PWB
Execute U021 to initialize the
backup RAM data.
Replace the main PWB.
2WA/2NJ/2RK
Reference
Wiring dia-
gram
Executing
U021
Detaching
and Reat-
taching the
main PWB