2JB/2JC-1
1-4-20
C0150 Backup memory (EEPROM) device
problem (Engine PWB)
Reading from or writing to EEPROM
cannot be performed.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
Device damage of
EEPROM.
Contact the Service Administrative Division.
C0160 Backup memory (EEPROM) data
problem (Engine PWB)
Reading data from EEPROM is abnor-
mal.
Read and write data does not match 5
times continuously.
Problem with the
backup memory
data.
Run maintenance item U022 to initialize the
backup memory data.
Defective engine
PWB.
If the C0160 is displayed after initializing the
backup memory, replace the engine PWB
and check for correct operation.
C0170 Copy counts problem
A checksum error is detected in the main
and engine backup memories for the
copy counters.
Data damage of
EEPROM.
Contact the Service Administrative Division.
Defective PWB. Replace the main PWB or engine PWB and
check for correct operation.
C0180 Machine number mismatch error
Machine number of main PWB and
engine PWB does not match.
Data damage of
EEPROM.
Contact the Service Administrative Division.
C0210 CPU communication problem
There is no reply after 3 retries at com-
munication.
Poor contact in the
connector termi-
nals.
Check the connection of the engine PWB
and main PWB, and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective PWB. Replace the engine PWB or main 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.
Check the connection of the interface PWB
and the printer PWB, and the continuity
across the connector terminals. Repair or
replace if necessary.
DIMM or DDR
installed incor-
rectly.
Check the connection of DIMM or DDR.
Repair or replace if necessary.
Defective PWB. Replace the printer PWB or engine PWB
and check for correct operation.
C0280 Communication problem between the
fax control PWB and main PWB
After main PWB status change signal
turns on 3 minute, when it does not
receive key required command from the
fax control PWB, one time it resets the
FAX. After that, while main PWB status
change signal turns on furthermore 1
minute, when it does not receive key
required command from the fax control
PWB.
When FAX_READY signal continues
fake for 6 s, one time it resets the FAX.
After that, when FAX_READY fake con-
tinues fake for 6 s.
Poor contact in the
connector termi-
nals.
Check the connection of the main PWB and
the fax control PWB, and the continuity
across the connector terminals. Repair or
replace if necessary.
Defective PWB. Replace the fax control PWB or main PWB
and check for correct operation.
C0320 Power CPU communication problem
The engine PWB and the power CPU
are unable to communicate with each
other.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
Code Contents
Remarks
Causes Check procedures/corrective measures
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