2KZ/2K0-4
1-4-23
6030 Fuser thermistor 2 (center)
break error
A/D value of the fuser thermis-
tor 2 exceeds 984 bit continu-
ously for 1 s during warming
up.
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 thermister2 and fuser PWB (YC2)
Fuser unit and engine PWB (YC22)
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.
Defective fuser
thermistor.
Replace the fuser unit (see page 1-5-18).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-32).
6040 NC sensor error 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 1-5-18).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-32).
6050 Abnormally low fuser
thermistor 2 (center) tem-
perature
The fuser temperature lower
than 100 °C/212 °F is
detected continuously for 1 s
during printing.
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.
Defective fuser
thermistor.
Replace the fuser unit (see page 1-5-18).
Defective fuser
heater.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-32).
Code Contents Causes
Check procedures/
corrective measures
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