Kyocera FS-C5150DN Service Manual page 73

Code Contents
2740 Developing release motor
time-out error
When the developing release
motor is driven, the develop-
ing release switch (DEVRSW)
is not detectable for 1 s.
2820 Fuser motor error
The fuser motor ready input is
not given for 5 s during the
fuser motor is ON.
4001 Polygon motor KM error
The polygon motor KM ready
input is not given for 10 s dur-
ing the polygon motor is ON.
4002 Polygon motor CY error
The polygon motor CY ready
input is not given for 10 s dur-
ing the polygon motor is ON.
Causes
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Developing release motor and engine PWB
(YC35)
Defective drive Check if the rollers and gears rotate
transmission sys- smoothly. If not, grease the bushes and
tem of the develop- gears. Check for broken gears and replace if
ing release motor. any.
Defective develop- Replace the developing release motor.
ing release motor.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-26).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Fuser motor and engine PWB (YC15)
Defective drive Check if the rollers and gears rotate
transmission sys- smoothly. If not, grease the bushes and
tem of the fuser gears. Check for broken gears and replace if
motor. any.
Defective fuser Replace the fuser motor.
motor.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-26).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Laser scanner unit KM and engine PWB
(YC31)
Defective polygon Replace the laser scanner unit KM (see
motor KM. page 1-5-43).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-26).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Laser scanner unit CY and engine PWB
(YC31)
Defective polygon Replace the laser scanner unit CY (see
motor CY. page 1-5-43).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-26).
1-4-18
Check procedures/
corrective measures
2KT/2KV