Electric Problems - Olivetti DF-650 Service Manual

3H3
1-4-3

Electric problems

Finisher
Problem
(1)
The paper convey-
ing motor does not
operate.
(2)
The upper paper
conveying belt motor
does not operate.
(3)
The lower paper con-
veying belt motor
does not operate.
(4)
The front upper side
registration guide
motor does not oper-
ate.
1-4-14
Causes
Poor contact in the paper
conveying motor connector
terminals.
Broken paper conveying
motor gear.
Defective paper conveying
motor.
Defective finisher main
PWB.
Poor contact in the upper
paper conveying belt motor
connector terminals.
Broken upper paper con-
veying belt motor gear.
Defective upper paper con-
veying belt motor.
Defective finisher main
PWB.
Poor contact in the lower
paper conveying belt motor
connector terminals.
Broken lower paper convey-
ing belt motor gear.
Defective lower paper con-
veying belt motor.
Defective finisher main
PWB.
Poor contact in the front
upper side registration
guide motor connector ter-
minals.
Broken front upper side reg-
istration guide motor gear.
Defective front upper side
registration guide motor.
Defective finisher main
PWB.
Check procedures/corrective measures
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the paper conveying motor gear if nec-
essary.
Run maintenance item U240 and check if the paper conveying
motor operates when YC14-3 on the finisher main PWB goes low.
If not, replace the paper conveying motor.
Run maintenance item U240 and check if YC14-3 on the finisher
main PWB goes low. If not, replace the finisher main PWB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the upper paper conveying belt motor
gear if necessary.
Run maintenance item U240 and check if the upper paper con-
veying belt motor operates when YC24-A1, YC24-A3, YC24-B28
and YC-B30 on the finisher main PWB go low. If not, replace the
upper paper conveying belt motor.
Run maintenance item U240 and check if YC24-A1, YC24-A3,
YC24-B28 and YC-B30 on the finisher main PWB go low. If not,
replace the finisher main PWB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the lower paper conveying belt motor
gear if necessary.
Run maintenance item U240 and check if the lower paper convey-
ing belt motor operates when YC24-A4, YC24-A6, YC24-B25 and
YC-B27 on the finisher main PWB go low. If not, replace the lower
paper conveying belt motor.
Run maintenance item U240 and check if YC24-A4, YC24-A6,
YC24-B25 and YC-B27 on the finisher main PWB go low. If not,
replace the finisher main PWB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the front upper side registration guide
motor gear if necessary.
Run maintenance item U240 and check if the front upper side reg-
istration guide motor operates when YC24-A7, YC24-A9, YC24-
B22 and YC-B24 on the finisher main PWB go low. If not, replace
the front upper side registration guide motor.
Run maintenance item U240 and check if YC24-A7, YC24-A9,
YC24-B22 and YC-B24 on the finisher main PWB go low. If not,
replace the finisher main PWB.
Service Manual Y104371-8