3NB/3ND/3N0/3NK
1-4-12
(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
8010
Punch motor error 1
When the punch motor is
driven, punch home position
sensor does not turn on within
200 ms.
Defective connec-
tor cable or poor
contact in the con-
nector (4000-sheet
finisher).
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Punch motor and punch PWB (YC4)
Punch home position sensor and punch
PWB (YC8)
Punch PWB (YC1) and DF main PWB (YC7)
Defective connec-
tor cable or poor
contact in the con-
nector (1000-sheet
finisher).
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Punch motor and punch PWB (YC4)
Punch home position sensor and punch
PWB (YC8)
Punch PWB (YC1) and DF main PWB (YC8)
Defective punch
home position sen-
sor.
Replace the punch home position sensor.
Defective punch
motor.
Replace the punch motor.
Defective PWB.
Replace the punch PWB or DF main PWB
and check for correct operation.
8020
Punch motor error 2
Home position is not obtained
in 3 seconds after home posi-
tion is initialized or in standby.
Defective connec-
tor cable or poor
contact in the con-
nector (4000-sheet
finisher).
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Punch motor and punch PWB (YC4)
Punch PWB (YC1) and DF main PWB (YC7)
Defective connec-
tor cable or poor
contact in the con-
nector (1000-sheet
finisher).
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Punch motor and punch PWB (YC4)
Punch PWB (YC1) and DF main PWB (YC8)
Defective punch
motor.
Replace the punch motor.
Defective PWB.
Replace the punch PWB or DF main PWB
and check for correct operation.
Y113480-7
Sevice Manual
Summary of Contents for DF-790
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