Kyocera TASKalfa 181 Service Manual page 136

2KJ/2KH
Code
C6000 Fuser heater break
The temperature does not reach 70 °C/
158°F in 15 s before secondary stabiliza-
tion.
Temperature rise of 1°C/1.8°F does not
occur in 5 s before secondary stabiliza-
tion (except during printing).
C6020 Abnormally high fuser thermistor
temperature
Fuser thermistor is detected 230°C/
446°F or more for 40 ms.
C6050 Abnormally low fuser thermistor tem-
perature
Fuser thermistor remains below 90°C/
194°F for 1 s.
C6400 Zero-cross signal error
Interrupt of the zero-cross signal does
not occur more than 1 s.
1-4-22
Contents
Causes Check procedures/corrective measures
Poor contact in the Reinsert the connector. Also check for conti-
fuser thermistor nuity within the connector cable. If none,
connector termi- remedy or replace the cable.
nals.
Fuser thermistor Check and reinstall if necessary.
installed incor-
rectly.
Fuser thermostat Check for continuity. If none, replace the
triggered. fuser thermostat.
Fuser heater Check and reinstall if necessary.
installed incor-
rectly.
Broken fuser Check for continuity. If none, replace the
heater wire. fuser heater.
Shorted thermistor. Measure the resistance. If it is 0 Ω, replace
the thermistor.
Broken heater con- Replace the power source PWB and check
trol circuit on the for correct operation.
power source
PWB.
Poor contact in the Reinsert the connector. Also check for conti-
fuser thermistor nuity within the connector cable. If none,
connector termi- remedy or replace the cable.
nals.
Measure the resistance. If it is ∞ Ω, replace
Broken fuser ther-
mistor wire. the fixing thermistor.
Fuser thermistor Check and reinstall if necessary.
installed incor-
rectly.
Fuser thermostat Check for continuity. If none, replace the
triggered. fuser thermostat.
Fuser heater Check and reinstall if necessary.
installed incor-
rectly.
Broken fuser Check for continuity. If none, replace the
heater wire. fuser heater.
Poor contact in the Reinsert the connector. Also check for conti-
connector termi- nuity within the connector cable. If none,
nals. remedy or replace the cable.
Defective power Check if the zero-crossing signal is output
source PWB. from YC2-2 on the power source PWB. If
not, replace the power source PWB.
Defective engine Replace the engine PWB if C6400 is
PWB. detected while YC2-2 on the power source
PWB outputs the zero-crossing signal.
Remarks