Kyocera ECOSYS FS-4300DN Service Manual

2LV/2L1/2L2/2MS/2MT
1-4-21
6400 Zero-cross signal error
While fuser heater control is
performed, the zero-cross sig-
nal is not input within 2 s.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Power source PWB (YC3) and engine PWB
(YC1)
Defective power
source PWB or
engine PWB.
Replace the power source PWB or the
engine PWB and check for correct operation
(see page 1-5-22).
7000 Toner motor error
During driving the toner motor,
an over-current detection sig-
nal is detected at intervals of
10 ms as for 300 accumula-
tion.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Toner motor and drum PWB (YC4)
Drum PWB and relay-L PWB (YC3)
Relay-L PWB and engine PWB (YC2)
Defective toner
motor.
Replace the toner motor.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-22).
7100 Toner sensor error
Sensor output value of 930 or
more continuously for 5 s.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Toner sensor and drum PWB (YC3)
Drum PWB and relay-L PWB (YC3)
Relay-L PWB and engine PWB (YC2)
Defective toner
sensor.
Replace the developer unit.
(See Page 1-5-13)
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-22).
7400 Developer unit non-install-
ing error
Sensor output value of 31 or
less continuously for 5 s.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Developer unit and drum PWB (YC3)
Drum PWB and relay-L PWB (YC3)
Relay-L PWB and engine PWB (YC2)
Defective toner
sensor.
Replace the developer unit.
(See Page 1-5-13)
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-22).
Code Contents Causes
Check procedures/
corrective measures

Kyocera ECOSYS FS-4300DN Specifications

General

Brand	Kyocera
Model	ECOSYS FS-4300DN
Category	All in One Printer
Language	English