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Code
Contents
6040
NC sensor error
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.
6120
Abnormally high fuser
thermistor 3 (press roller)
temperature
The fuser temperature
exceeds 200 °C/392 °F for 1
s.
6130
Fuser thermistor 3 (press
roller) break error
Fuser thermistor 3 detects a
temperature of -14 °C/6.8 °F .
Fuser thermistor 3 does not
reach 30° C/86 °F even
after60 s during warming up.
Y116141-8
Causes
Deformed connec-
If the I/F connector pins of the fuser unit and
tor pin.
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
Replace the fuser unit (see page 1-5-17).
thermistor.
Defective PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-33).
Deformed connec-
If the I/F connector pins of the fuser unit and
tor pin.
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
Replace the fuser unit (see page 1-5-17).
thermistor.
Defective fuser
heater.
Defective PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-33).
Deformed connec-
If the I/F connector pins of the fuser unit and
tor pin.
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
Replace the fuser unit (see page 1-5-17).
thermistor.
Defective PWB.
Replace the IH PWB or the engine PWB and
check for correct operation (see page 1-5-
51, 1-5-33).
Defective connec-
Reinsert the connector. Also check for conti-
tor cable or poor
nuity within the connector cable. If none,
contact in the con-
replace the cable.
nector.
Fuser thermistor 3 and fuser PWB (YC4)
Fuser unit and engine PWB (YC30)
Deformed connec-
If the I/F connector pins of the fuser unit and
tor pin.
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
Replace the fuser unit (see page 1-5-17).
thermistor.
Defective PWB.
Replace the IH PWB or the engine PWB and
check for correct operation (see page 1-5-
51, 1-5-33).
1-4-39
Check procedures/
corrective measures
Service Manual
2NP
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