2J5
1-4-5
6000 Broken fuser heater lamp M wire
The temperature does not reach 100
°C/
212
°F after the fuser heater lamp M has
been turned on continuously for 30 s.
The detected temperature of fuser ther-
mistor M/S does not rise 1°C/1.8°F after
fuser heater lamp has been turned on
continuously for 15 s.
However, the signal will not be detected
when the detected temperature of fuser
thermistor M is 200°C/392°F or more.
Poor contact in the
fuser thermistor M
connector termi-
nals.
Reinsert the connector (See page P.1-5-21).
Fuser thermistor M
installed incor-
rectly.
Check and reinstall if necessary (See page
P.1-5-21).
Thermal cutout
triggered.
Check for continuity. If none, replace the
thermal cutout (See page P.1-5-21).
Fuser heater lamp
installed incor-
rectly.
Check and reinstall if necessary (See page
P.1-5-17).
Broken fuser
heater lamp wire.
Check for continuity. If none, replace the
fuser heater lamp M (See page P.1-5-17).
6020 Abnormally high fuser thermistor S
temperature
The temperature of the fuser thermistor
S detects 250°C/482°F or more continu-
ously for 3 s.
Shorted fuser ther-
mistor S.
Measure the resistance. If it is 0 Ω, replace
the fuser thermistor S (See page P.1-5-21).
Defective engine
PWB.
Replace the engine PWB (See page P.1-5-
23).
6030 Broken fuser thermistor S wire
The detected temperature of fuser ther-
mistor S is 50
°C/122°F or more and
input from fuser thermistor S is 1 less
than 1 (A/D value) continuously for 1.8
second.
Except when the fuser heater is turned
off.
Poor contact in the
fuser thermistor S
connector termi-
nals.
Reinsert the connector (See page P.1-5-21).
Broken fuser ther-
mistor S wire.
Measure the resistance. If it is ∞ Ω, replace
the fuser thermistor S (See page P.1-5-21).
Fuser thermistor S
installed incor-
rectly.
Check and reinstall if necessary (See page
P.1-5-21).
Thermal cutout
triggered.
Check for continuity. If none, replace the
thermal cutout (See page P.1-5-21).
Fuser heater lamp
installed incor-
rectly.
Check and reinstall if necessary (See page
P.1-5-17).
Broken fuser
heater lamp wire.
Check for continuity. If none, replace the
fuser heater lamp M (See page P.1-5-17).
6220 Abnormally high fuser thermistor M
temperature
The temperature of the fuser thermistor
M detects 255
°C/482°F or more continu-
ously for 3 s.
Shorted fuser ther-
mistor M.
Measure the resistance. If it is 0 Ω, replace
the fuser thermistor M (See page P.1-5-21).
Defective engine
PWB.
Replace the engine PWB (See page P.1-5-
23).
Code Contents
Remarks
Causes Check procedures/corrective measures