Olivetti DF-790 Service Manual page 80

Problem
(5)
DF eject motor
does not operate.
(6)
DF side registra-
tion motor 1,2 does
not operate.
(7)
DF drum motor
does not operate.
(8)
DF tray motor does
not operate.
Service Manual
Causes
1. Defective connector
cable or poor con-
tact in the connector.
2. Defective drive trans-
mission system.
3. Defective motor.
4. Defective PWB.
1. Defective connector
cable or poor con-
tact in the connector.
2. Defective drive trans-
mission system.
3. Defective motor.
4. Defective PWB.
1. Defective connector
cable or poor con-
tact in the connector.
2. Defective drive trans-
mission system.
3. Defective motor.
4. Defective PWB.
1. Defective connector
cable or poor con-
tact in the connector.
2. Defective drive trans-
mission system.
3. Defective motor.
4. Defective PWB.
Check procedures/corrective measures
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
DF eject motor and DF main PWB (YC12)
Check if the rollers and gears rotate smoothly. If not,
grease the bushes and gears. Check for broken gears and
replace if any.
Replace the DF eject motor.
Replace the DF main PWB and check for correct operation
(see page 1-5-2).
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
DF side registration motor 1,2 and DF main PWB (YC15)
Check if the rollers and gears rotate smoothly. If not,
grease the bushes and gears. Check for broken gears and
replace if any.
Replace the DF side registration motor 1,2.
Replace the DF main PWB and check for correct operation
(see page 1-5-2).
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
DF drum motor and DF main PWB (YC18)
Check if the rollers and gears rotate smoothly. If not,
grease the bushes and gears. Check for broken gears and
replace if any.
Replace the DF drum motor.
Replace the DF main PWB and check for correct opera-
tion(see page 1-5-2).
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
DF tray motor and DF main PWB (YC19)
Check if the rollers and gears rotate smoothly. If not,
grease the bushes and gears. Check for broken gears and
replace if any.
Replace the DF tray motor.
Replace the DF main PWB and check for correct operation
(see page 1-5-2).
1-4-27
3NB/3ND/3N0/3NK
Y113480-7