2KJ/2KH
1-4-18
C0210 Communication problem between the
main and engine
When the power is turned on, the
machine does not detect the low level of
SBSY and the high level of SDIR for
10 s.
Poor contact in the
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective PWB. Replace the main PWB or engine PWB and
check for correct operation.
C0240 Printer PWB communication problem
The printer PWB does not respond 120 s
after the power is turned on.
Poor contact in the
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective main
PWB.
Replace the main PWB and check for cor-
rect operation.
C0250 Scanner network board communica-
tion problem
The scanner network board does not
respond.
Poor contact in the
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective PWB. Replace the main PWB or scanner network
board and check for correct operation.
C0280 Communication problem between the
fax control PWB and main PWB
Communication between the fax control
PWB and the main PWB of the machine
cannot be performed normally.
Poor contact in the
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective PWB. Replace the fax control PWB or main PWB
and check for correct operation.
C0410 Document processor communication
problem
Communication fails five times succes-
sively.
Document proces-
sor installed incor-
rectly.
Check the installation state of the document
processor and adjust it if it is not properly
installed.
Defective PWB. Replace the engine PWB or DP driver PWB
and check for correct operation.
C0420 First paper feeder communication
problem
Communication fails five times succes-
sively.
First paper feeder
installed incor-
rectly.
Check the installation state of the first paper
feeder and adjust it if it is not properly
installed.
Defective PWB. Replace the engine PWB or cassette main
PWB and check for correct operation.
C0440 Built-in finisher communication prob-
lem
Communication fails five times succes-
sively.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC4 on
the engine PWB and the connector of the
built-in finisher, and the continuity across the
connector terminals. Repair or replace if
necessary.
Defective PWB. Replace the engine PWB or finisher main
PWB and check for correct operation.
C0500 Second paper feeder communication
problem
Communication fails five times succes-
sively.
Second paper
feeder installed
incorrectly.
Check the installation state of the second
paper feeder and adjust it if it is not properly
installed.
Defective PWB. Replace the engine PWB or cassette main
PWB and check for correct operation.
C0510 Third paper feeder communication
problem
Communication fails five times succes-
sively.
Third paper feeder
installed incor-
rectly.
Check the installation state of the third paper
feeder and adjust it if it is not properly
installed.
Defective PWB. Replace the engine PWB or cassette main
PWB and check for correct operation.
Code Contents
Remarks
Causes Check procedures/corrective measures
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