Kyocera FS-C8600DN - Abnormally High Fuser Thermistor 4 Temperature; Abnormally Low Fuser Thermistor 1 Temperature; Broken Fuser Thermistor 1 Wire; Fuser Heater Error

2MN/2N1
1-4-52
6030 Broken fuser thermistor 1
wire
Input from fuser thermistor 1
is 984 or more (A/D value)
continuously for 1 s.
Verify if A/D read in the differ-
ential output won’t change by
4 or more when it was turned
on for 10 seconds in a low-
temperature environment.
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.
Fuser unit and engine PWB (YC26)
Broken fuser
thermistor 1 wire.
Replace the fuser unit (see page 1-5-40).
Fuser thermostat
triggered.
Replace the fuser unit (see page 1-5-40).
Defective fuser IH. Replace the fuser unit (see page 1-5-40).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
6040 Fuser heater error
Input from fuser thermistor 1
is abnormal value continu-
ously for 1 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.
Fuser unit and engine PWB (YC26)
Broken fuser
thermistor 1 wire.
Replace the fuser unit (see page 1-5-40).
Defective fuser IH. Replace the fuser unit (see page 1-5-40).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
6050 Abnormally low fuser
thermistor 1 temperature
Fuser thermistor 1 detects a
temperature lower than
100°C/212°F for 1 s after
warming up, during ready or
during print.
Fuser thermistor 1 detects a
temperature lower than 70°C/
158°F for 1 s during low
power mode.
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.
Fuser unit and engine PWB (YC26)
Defective fuser
thermistor 1.
Replace the fuser unit (see page 1-5-40).
Defective fuser IH. Replace the fuser unit (see page 1-5-40).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
6120 Abnormally high fuser
thermistor 4 temperature
Fuser thermistor 4 detects a
temperature higher than
190°C/374°F for 1 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.
Fuser unit and engine PWB (YC26)
Shorted fuser
thermistor 4.
Replace the fuser unit (see page 1-5-40).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
Code Contents Causes
Check procedures/
corrective measures