2MN/2N1-1
1-4-27
(2) Self diagnostic codes
If the part causing the problem was not supplied, use the unit including the part for replacement.
Code Contents Causes
Check procedures/
corrective measures
0100 Backup memory device
error
Defective
EEPROM.
Replace the main PWB and check for cor-
rect operation (see page 1-5-44).
Defective main
PWB.
Replace the main PWB and check for cor-
rect operation (see page 1-5-44).
0120 MAC address data error
For data in which the MAC
address is invalid.
Defective
EEPROM.
Replace the main PWB and check for cor-
rect operation (see page 1-5-44).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
0150 Backup memory read/write
error (engine PWB)
No response is issued from
the device in reading/writing
for 5 ms or more and this
problem is repeated 5 times
successively.
Mismatch of reading data from
2 locations occurs 8 times
successively.
Mismatch between writing
data and reading data occurs
8 times successively.
Improper installa-
tion EEPROM.
Check the installation of the EEPROM and
remedy if necessary.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
Device damage of
EEPROM.
Contact the Service Administrative Division.
0160 Backup memory data error
(engine PWB)
Reading data from EEPROM
is abnormal.
Data damage of
EEPROM.
Contact the Service Administrative Division.
0170 Billing counting error
A checksum error is detected
in the main and engine
backup memories for the bill-
ing counters.
Data damage of
EEPROM.
Contact the Service Administrative Division.
Defective PWB. Replace the DF main PWB or the engine
PWB and check for correct operation. (see
page 1-5-44,1-5-49)
0180 Machine number mismatch
Machine number of main and
engine does not match.
Data damage of
EEPROM.
Contact the Service Administrative Division.
0640 Hard disk error
The hard disk cannot be
accessed.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Defective hard
disk.
Run U024 (HDD formatting) without turning
the power off to initialize the hard disk.
Replace the hard disk drive and check for
correct operation if the problem is still
detected after initialization.
Defective main
PWB.
Replace the main PWB and check for cor-
rect operation (see page 1-5-44).