2LW/2LX
1-4-7
0180 Machine number mis-
match
Machine number of main
and engine does not match.
Data damage of
EEPROM.
Contact the Service Administrative Division.
0420 Paper feeder communica-
tion error
Communication error
between engine PWB and
optional paper feeder.
Improper installa-
tion paper feeder.
Follow installation instruction carefully again.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for continu-
ity within the connector cable. If none, remedy
or replace the cable.
Paper feeder interface and connect-L PWB
(YC2)
Connect-L PWB (YC6) and engine PWB
(YC504)
Defective engine
PWB.
Replace the engine PWB and check for correct
operation (see page 1-5-30).
Defective PF main
PWB.
Replace the PF main PWB (Refer to the ser-
vice manual for the paper feeder).
0830 FAX control PWB flash
program area checksum
error
A checksum error occurred
with the program of the
FAX control PWB.
Defective FAX soft-
ware.
Install the fax software.
Defective FAX con-
trol PWB.
Replace the FAX control PWB (see page 1-5-
42).
0840 Faults of RTC
The time is judged to go
back based on the compari-
son of the RTC time and
the current time or five
years or more have
passed.
The battery is dis-
connected from the
main PWB.
Check visually and remedy if necessary
Defective main
PWB.
Replace the main PWB and check for correct
operation (see page 1-5-34).
0870 FAX control PWB to main
PWB high capacity data
transfer error
High-capacity data transfer
between the FAX control
PWB and the main PWB of
the machine was not nor-
mally performed even if the
data transfer was retried
the specified times.
Improper installa-
tion FAX control
PWB.
Reinstall the FAX control PWB (see page 1-5-
42).
Defective FAX con-
trol PWB or main
PWB.
Replace the FAX control PWB or main PWB
and check for correct operation (see page 1-5-
42 or 1-5-34).
0920 Fax file system error
The backup data is not
retained for file system
abnormality of flash mem-
ory of the FAX control
PWB.
Defective FAX con-
trol PWB.
Replace the FAX control PWB and check for
correct operation (see page 1-5-42).
Code Contents Causes
Check procedures/
corrective measures