2T6/2T7/2T8/2T9-1
1-4-18
6020 Abnormally high fuser
thermistor 2 temperature
The detection temperature of
fuser thermistor 2 is higher
than 235°C/455°F.
In a heater-off state, the
detection temperature of fuser
thermistor 2 is higher than
195°C/383°F after the detec-
tion temperature of fuser
thermistor 2 was 155°C/311°F
or less.
Deformed connec-
tor pin.
See page 1-4-19.
Defective triac. See page 1-4-19.
Shorted fuser
thermistor.
Replace the fuser unit (see page 1-5-19).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-22).
6030 Broken fuser thermistor 2
wire
A/D value of the fuser thermis-
tor 2 exceeds 1019 bit contin-
uously for 4 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 and fuser thermistor con-
nect PWB(YC2)
Fuser thermistor connect PWB(YC3) and
engine PWB (YC21)
Deformed connec-
tor pin.
See page 1-4-19.
Defective triac. See page 1-4-19.
Defective fuser
thermistor.
Replace the fuser unit (see page 1-5-19).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-22).
Code Contents Causes
Check procedures/
corrective measures
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