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Electric problems
Troubleshooting to each failure must be in the order of the numbered symptoms.
Problem
(1)
The side feeder
paper feed motor,
side feeder paper
conveying motor
does not operate.
(2)
The side feeder lift
motor does not oper-
ate.
(3)
The message
requesting cover to
be closed is dis-
played when the top
cover is closed.
Causes
1. Poor contact in the con-
nector terminals.
2. Broken the gear.
3. Defective motor.
4. Defective side feeder
main PWB.
1. Poor contact in the con-
nector terminals.
2. Broken the gear.
3. Defective side feeder
main PWB.
4. Defective motor.
1. Poor contact of the top
cover switch connector
terminals.
2. Broken lever of the top
cover switch.
3. Defective top cover
switch.
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 gear if necessary.
Run maintenance item U247 and check if the motor operates. If
not, replace the motor.
Run maintenance item U247 and check if the motor operates. If
not, replace the side feeder 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 gear if necessary.
Run maintenance item U247 and check if YC4-5 and YC4-6 on
the side feeder main PWB goes low. If not, replace the side feeder
main PWB.
Run maintenance item U247 and check if the side feeder lift motor
operates. If not, replace the side feeder lift motor.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace top cover switch if the lever is broken.
Check for continuity across the contacts. If there is no continuity
when the top cover switch is on, replace it.
3M0
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