Kyocera ECOSYS M3040dn Service Manual page 263

Problem
(20)
A message indicat-
ing cover open is
displayed when the
rear cover is
closed.
(50/60 ppm model
only)
(21)
DP paper feed
motor does not
operate.
(22)
DP paper convey-
ing motor does not
operate.
(23)
DP switchback
motor does not
operate.
(24)
An original jams
when the main
power switch is
turned on.
Causes
1. Defective connector
cable or poor con-
tact in the connector.
2. Defective rear cover
switch.
3. Defective connect
left PWB.
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 motor.
3. Defective PWB.
1. A piece of paper torn
from an original is
caught around the
DP timing sensor,
DP ragistration sen-
sor or DP switchback
sensor.
2. Defective DP timing
sensor.
3. Defective PWB.
Check procedures/corrective measures
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Rear cover switch and connect left PWB (YC10)
Connect left PWB and control PWB (YC2)
Check and replace if necessary.
Replace the connect left PWB (see page 2-2-36).
Replace the control PWB and check for correct operation
(see page 2-2-12).
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
DP paper feed motor and control PWB (YC1001)
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 DP paper feed motor.
Replace the control PWB and check for correct operation
(see page 2-2-12).
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
DP conveying motor and control PWB (YC1001)
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 DP conveying motor.
Replace the control PWB and check for correct operation
(see page 2-2-12).
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
DP switchback motor and control PWB (YC1001)
Replace the DP switchback motor.
Replace the control PWB and check for correct operation
(see page 2-2-12).
Check visually and remove it, if any.
Replace the DP timing sensor, DP ragistration sensor or
DP switchback sensor.
Replace the control PWB and check for correct operation
(see page 2-2-12).
1-4-101
2NM/2NX/2NY/2NZ/2P0/2P6