Kyocera TASKalfa 220 - Page 128

2KL/2KK
1-4-20
C6050 Abnormally low fuser thermistor tem-
perature
Fuser thermistor remains below 90°C/
194°F for 1 s.
Poor contact in the
fuser thermistor
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Broken fuser ther-
mistor wire.
Measure the resistance. If it is ∞ Ω, replace
the fixing thermistor.
Fuser thermistor
installed incor-
rectly.
Check and reinstall if necessary.
Fuser thermostat
triggered.
Check for continuity. If none, replace the
fuser thermostat.
Fuser heater
installed incor-
rectly.
Check and reinstall if necessary.
Broken fuser
heater wire.
Check for continuity. If none, replace the
fuser heater.
C6400 Zero-cross signal error
Interrupt of the zero-cross signal does
not occur more than 1 s.
Poor contact in the
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective power
source PWB.
Check if the zero-crossing signal is output
from YC2-2 on the power source PWB. If
not, replace the power source PWB.
Defective main/
engine PWB.
Replace the main/engine PWB if C6400 is
detected while YC2-2 on the power source
PWB outputs the zero-crossing signal.
C7800 Broken external thermistor wire
The thermistor output value is 0.5 V or
less.
Poor contact in the
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective humidity
sensor.
Replace the cassette PWB and check for
correct operation.
C7810 Short-circuited external thermistor
wire
The thermistor output value is 4.5 V or
more.
Poor contact in the
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective humidity
sensor.
Replace the cassette PWB and check for
correct operation.
Code Contents
Remarks
Causes Check procedures/corrective measures