2M2/2M3
1-4-7
6000 Broken fuser heater
The temperature does not
reach 100° C/212 °F after the
fuser heater lamp has been
turned on continuously for 30
s.
At the time of 20 degrees or
less from specified tempera-
ture,the fuser temperature
does not rise by 2 degrees or
more after the fuser heater
lamp has been turned on con-
tinuously for 8 s.(during ready
or during print)
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
fuser heater lamp and Power source PWB
(YC102).
Fuser thermostat
triggered.
Replace the fuser unit (see page 1-5-6).
Defective fuser
heater.
Replace the fuser unit (see page 1-5-6).
Defective main
PWB.
Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
6020 Abnormally high fuser
thermistor temperature
Fuser thermistor detects a
temperature higher than
210°C/410°F for 3 s
Deformed connec-
tor pin.
If the I/F connector pins of the fuser unit and
the main unit are deformed owing to foreign
matters, such as paper dusts, replace the
connectors or the units including the con-
nectors.
Shorted fuser
thermistor.
Replace the fuser unit (see page 1-5-6).
Defective power
source PWB.
Replace the power source PWB
(see page 1-5-7).
Defective main
PWB.
Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
6030 Broken fuser thermistor
wire
Average input AD given by the
thermistor is less than 2 for
300msec.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Fuser unit and main PWB (YC15)
Broken fuser
thermistor wire.
Replace the fuser unit (see page 1-5-6).
Fuser thermostat
triggered.
Replace the fuser unit (see page 1-5-6).
Defective main
PWB.
Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
6400 Fixing control zerocross
signal error
The ZCROSS signal does not
reach the main PWB for more
than 2 s.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Power source PWB (YC103) and main PWB
(YC12)
Defective power
source PWB.
Replace the power source PWB
(see page 1-5-7).
Defective main
PWB.
Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
Code Contents Causes
Check procedures/
corrective measures