2KZ/2K0
1-4-24
6120 Abnormally high fuser
thermistor 3 (press roller)
temperature
The fuser temperature
exceeds 200 °C/392 °F for 1
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.
Defective IH PWB. Replace the IH PWB and check for correct
operation (see page 1-5-35).
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 1-5-31).
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
after20 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 thermistor 3 and fuser PWB (YC4)
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 IH PWB. Replace the IH PWB and check for correct
operation (see page 1-5-35).
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 1-5-31).
6150 Abnormally low fuser
thermistor 3 (press roller)
temperature
The fuser temperature lower
than 30 °C/86 °F is detected
continuously for 1 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.
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 1-5-31).
Code Contents Causes
Check procedures/
corrective measures
Service Manual Y113010-4
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