Kyocera KM-1635 - Page 114

2HA/2HB
1-4-18
C4200 BD steady-state problem
The MIC detects a BD error for 600 ms
after the polygon motor rotation has
been stabilized.
Defective laser
diode.
Replace the LSU.
Defective polygon
motor.
Replace the LSU.
Defective main
PWB.
Replace the main PWB and check for cor-
rect operation.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
C6000 Broken fuser heater wire
The temperature does not become
100
°C/212°F even if 30 s pass before
secondary stabilization.
When there is no 1
°C/1.8°F rise in 5 s
before secondary stabilization.
Poor contact in the
thermistor connec-
tor terminals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Fuser thermistor
installed incor-
rectly.
Check and reinstall if necessary.
Fuser thermostat
triggered.
Check for continuity. If none, replace the
fuser thermostat.
Fuser heater M or
S installed incor-
rectly.
Check and reinstall if necessary.
Broken fuser
heater M or S wire.
Check for continuity. If none, replace the
heater lamp.
C6020 Abnormally high fuser unit thermistor
temperature
The fuser temperature exceeds 230
°C/
446
°F for 40 ms.
Shorted thermistor.
Measure the resistance. If it is 0 Ω, replace
the thermistor.
Broken heater con-
trol circuit on the
power supply
PWB.
Replace the power supply PWB and check
for correct operation.
C6050 Abnormally low fuser unit thermistor
temperature
The fuser temperature remains below
90
°C/194°F for 1 s.
Poor contact in the
thermistor connec-
tor terminals.
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 fuser 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 M or
S installed incor-
rectly.
Check and reinstall if necessary.
Broken fuser
heater M or S wire.
Check for continuity. If none, replace the
fuser heater M or S.
Code Contents
Remarks
Causes Check procedures/corrective measures