2MA/2MB
1-4-8
0180 Machine number mismatch
Machine number of main and 
engine does not match.
Data damage of 
EEPROM.
Contact the Service Administrative Division.
0600 Expanded memory (DIMM) 
installing error
The expansion memory mod-
ules (DIMM) are not correctly 
mounted.
Improper installa-
tion expanded 
memory (DIMM).
Check the installation of the expanded mem-
ory (DIMM).
0610 Expanded memory (DIMM) 
error
The expansion memory mod-
ules (DIMM) mounted on the 
main PWB does not operate 
correctly.
Defective 
expanded memory 
(DIMM).
Replace the expanded memory (DIMM) and 
check for correct operation (see page 1-2-
12).
Defective main 
PWB.
Replace the main PWB and check for cor-
rect operation (see page 1-5-30).
0830 FAX control PWB flash pro-
gram 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-
5-36).
0840 Faults of RTC
The time is judged to go back 
based on the comparison 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 cor-
rect operation (see page 1-5-30).
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 normally 
performed even if the data 
transfer was retried the speci-
fied times.
Improper installa-
tion FAX control 
PWB.
Reinstall the FAX control PWB (see page 1-
5-36).
Defective FAX con-
trol PWB or main 
PWB.
Replace the FAX control PWB or main PWB 
and check for correct operation (see page 1-
5-36 or 1-5-30).
0920 Fax file system error
The backup data is not 
retained for file system abnor-
mality of flash memory of the 
FAX control PWB.
Defective FAX con-
trol PWB.
Replace the FAX control PWB and check for 
correct operation (see page 1-5-36).
Code Contents Causes
Check procedures/
corrective measures