Kyocera TASKalfa 7002i Service Manual page 1255

C3500: Communication error between the scanner and the ASIC
The communication error is detected during the communication between the scanner ASIC and the scanner
CPU.
Step Check description
1 Resetting the main power
2 Firmware upgrade
3 Replacing the engine PWB The engine PWB is faulty.
C3600: Scanner sequence error
The program internal processing error of the scanner sequence occurs.
Step Check description
1 Executing U021
2 Replacing the engine PWB The engine PWB is faulty.
C3800: AFE error
The writing data and the reading data mismatch 3 times continuously when writing. No response is not
returned from AFE for 100ms.
Step Check description
1 Checking the connection
2 Replacing the lens unit
Assumed cause
ASIC does not properly
operate.
The firmware is not the lat-
est version.
Assumed cause
The memory operation is
faulty.
Assumed cause
The FFC is not properly
connected, or it is faulty.
The CCD PWB is faulty.
7-395
Measures
Turn the power switch and
the main power switch off .
After 5s passes, turn the
main power switch and the
power switch on.
Upgrade the scanner firm-
ware to the latest version.
Replace the engine PWB.
Measures
Execute U021.
Replace the engine PWB.
Measures
Reconnect the following FFC.
If the FFC terminal section is
peeled off, deformed or the
FFC is broken, replace the
FFC. • CCD PWB - Engine
PWB
Replace the lens unit and
execute U411.
2WA/2NJ/2RK
Reference
Firmware
Update
Detaching
and reat-
taching the
engine
PWB
Reference
Executing
U021
Detaching
and reat-
taching the
engine
PWB
Reference
Wiring dia-
gram
Detaching
and reat-
taching the
lens unit