2KN/2KP
1-4-40
C6000 Fuser heater lamp break
• The fuser temperature does not
increase for 40 s after the fuser heat-
ers have been turned on for warming
up.
• The fuser temperature remains below
50
°C/122 °F for 10 s continuously
after the fuser heaters have been
turned on during stabilization.
Installation defec-
tiveness on fuser
thermistor M and S.
Check the mounting state of the fuser ther-
mistor M and S. If any problem is found,
repair it.
Defective fuser
thermostat 1 or 2.
Replace the fuser thermostat 1 or 2 (see
page 1-5-63).
Installation defec-
tiveness on fuser
heater L, M or S.
Check the mounting state of the fuser ther-
mistor L, M and S. If any problem is found,
repair it.
Broken fuser
heater L, M and S
wire.
Check for continuity. If none, replace the
fuser heater L, M and S (see page 1-5-66).
Defective engine
PWB.
Replace the engine PWB.
Defective AC
power source
PWB.
Replace the AC power source PWB.
C6020 Fuser thermistor high-temperature
detection error
• The fuser temperature exceeds 235
°C/455 °F for 10 s.
Installation defec-
tiveness on fuser
thermistor M and S.
Check the mounting state of the fuser ther-
mistor M and S. If any problem is found,
repair it.
Defective fuser
thermistor M and
S.
Replace the fuser thermistor M and S (see
page 1-5-63).
Defective engine
PWB.
Replace the engine PWB.
C6030 Fuser thermistor break error
• The fuser temperature remains at
lower then 0
°C/32 °F for 30 s continu-
ously when the fuser heater is on.
Defective engine
PWB.
Replace the engine PWB.
Defective AC
power source
PWB.
Replace the AC power source PWB.
Installation defec-
tiveness on fuser
thermistor M and S.
Check the mounting state of the fuser ther-
mistor M and S. If any problem is found,
repair it.
C6050 Fuser thermistor abnormal tempera-
ture detection
• During copying, the temperature at the
heat roller lower than 120
°C/248 °F is
detected continuously for 5 s.
Installation defec-
tiveness on fuser
thermistor M and S.
Check the mounting state of the fuser ther-
mistor M and S. If any problem is found,
repair it.
Operation on fuser
thermostat 1 or 2.
Check for continuity. If none, replace the
fuser thermostat 1 or 2.
Installation defec-
tiveness on fuser
heater L, M or S.
Check the mounting state of the fuser ther-
mistor L, M and S. If any problem is found,
repair it.
Broken fuser
heater L, M and S
wire.
Check for continuity. If none, replace the
fuser heater L, M and S (see page 1-5-66).
Defective engine
PWB.
Replace the engine PWB.
Defective AC
power source
PWB.
Replace the AC power source PWB.
Code Contents
Remarks
Causes Check procedures/corrective measures