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1-4-2
Self-diagnosis
(1) Self-diagnostic function
This unit is equipped with a self-diagnostic function. When a problem is detected, copying is disabled. "C" and a number
between 0100 and 7810 altenates, indicating the nature of the problem. After removing the problem, the self-diagnostic
function can be reset by opening and closing the front cover to turn safety switch off and on or power switch turns off and
on.
(2) Self diagnostic codes
Code
C0100
Backup memory read/write problem
(main PWB)
Read and write data does not match.
C0110
Backup memory data problem (main
PWB)
Data in the specified area of the backup
memory does not match the specified
values.
C0150
Backup memory read/write problem
(engine PWB)
Read and write data does not match.
C0160
Backup memory data problem (engine
PWB)
Data in the specified area of the backup
memory does not match the specified
values.
C0170
Accounting count problem
When the power is turned on, the total
count and the scan count are abnormal
both on the main PWB and the engine
PWB.
C0180
Machine number mismatch
When the power is turned on, the
machine number does not match
between the main PWB and the engine
PWB.
C0210
Communication problem between the
main PWB and engine board PWB
When the power is turned on, the
machine does not detect the low level of
SBSY and the high level of SDIR for 10
seconds.
C0240
Optional printer board PWB commu-
nication problem
The printer board PWB does not
respond 120 s after the power is turned
on.
Contents
Causes
Check procedures/corrective measures
Defective main
Replace the main PWB and check for cor-
PWB.
rect operation.
Problem with the
Turn safety switch off and back on and run
backup memory
maintenance item U020 to set the contents
data.
of the backup memory data again.
Defective backup
If the C0110 is displayed after re-setting the
RAM.
backup memory contents, replace the main
PWB.
Defective engine
Replace the engine PWB and check for cor-
PWB.
rect operation.
Problem with the
Turn safety switch off and back on and run
backup memory
maintenance item U020 to set the contents
data.
of the backup memory data again.
Defective backup
If the C0160 is displayed after re-setting the
RAM.
backup memory contents, replace the
engine PWB.
Defective main
Replace the main PWB or engine PWB and
PWB or engine
check for correct operation.
PWB.
Data damage of
Contact the Service Administrative Division.
EEPROM.
Poor contact in the
Check the connection of connectors YC6 on
connector termi-
the main PWB and YC1 on the engine PWB,
nals.
and the continuity across the connector ter-
minals. Repair or replace if necessary.
Defective main
Replace the main PWB or engine PWB and
PWB or engine
check for correct operation.
PWB.
Poor contact in the
Check the connection of connector. Repair
connector termi-
or replace if necessary.
nals.
Defective main
Replace the main PWB or printer board
PWB or printer
PWB and check for correct operation.
board PWB.
Remarks
2HA/2HB
1-4-15
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