Kyocera KM-4230 Service Manual page 422

Code Contents
C022 Communication problem
between the engine PCB
and main PCB
• There is no reply after 20
retries at communication.
C023 Scanner communication
problem
• There is no reply after 5 re-
tries at communication.
C024 Printer board communica-
tion problem*
•There is no reply after 20
retries at communication.
*2: Optional.
Defective en-
gine ROM IC.
Defective main
PCB.
Defective main
PCB.
Poor contact of
2
the connector
terminals.
Defective main
PCB or printer
board.
Remarks
Causes
Replace the engine ROM IC
on the main PCB and check
for correct operation.
Replace the main PCB and
check for correct operation.
Replace the main PCB and
check for correct operation.
Check the connection of con-
nector CN4 on the main PCB
and the connector on the
printer board. Repair or re-
place if necessary.
Replace the main PCB or
printer board and check for
correct operation.
Check procedures/
corrective measures
2A3/4
3-5-3