3MJ
1-4-5
1-4-3 Electric problems
Troubleshooting to each failure must be in the order of the numbered symptoms.
Problem
Causes
Check procedures/corrective measures
(1)
The paper convey-
ing motor does not
operate.
1. Poor contact in the con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
2. Defective drive transmis-
sion system.
Check if the rollers and gears rotate smoothly. If not, grease the
bushings and gears. Check for broken gears and replace if any.
3. Broken motor coil.
Check for continuity across the coil. If none, replace the motor.
(2)
The feedshift sole-
noid does not oper-
ate.
1. Poor contact in the con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
2. Broken solenoid coil.
Check for continuity across the coil. If none, replace the solenoid.
(3)
The pickup solenoid
does not operate.
1. Poor contact in the con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
2. Broken solenoid coil.
Check for continuity across the coil. If none, replace the solenoid.
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