Olivetti DF-790 Service Manual page 76

Code Contents
8430 Punch unit communication
error
Communication with the
punch unit is not possible.
8500 Mailbox communication
error
Communication with the mail-
box is not possible.
8510 MB conveying motor error 1
When initial operation, MB
home position sensor does
not turn on within 5 s.
Service Manual
Causes
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector (4000-sheet Punch PWB (YC1) and DF main PWB (YC7)
finisher).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector (1000-sheet Punch PWB (YC1) and DF main PWB (YC8)
finisher).
Defective PWB. Replace the punch PWB or the DF main
PWB and check for correct operation.
(see page 1-5-2)
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. MB main PWB (YC3) and DF main PWB
(YC6)
Defective PWB. Replace the MB main PWB or the DF main
PWB and check for correct operation.
(see page 1-5-2)
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. MB conveying motor and MB main PWB
(YC5)
MB home position sensor and MB main
PWB (YC2)
Defective MB Replace the MB home position sensor.
home position sen-
sor.
Defective MB con- Replace the MB conveying motor.
veying motor.
Defective MB main Replace the MB main PWB and check for
PWB. correct operation.
1-4-23
3NB/3ND/3N0/3NK
Check procedures/
corrective measures
Y113480-7