2P7/2R0/3PN
1-4-16
5100 Chager current error
When the current value mea-
sured at the time of potential
adjustment is less than 20 μA.
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.
Chager unit and high voltage PWB
High voltage PWB (YC101) and engine
PWB (YC19)
Defective high
voltage PWB.
Replace the high voltage PWB and check
for correct operation (see page 1-5-54).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-40).
6000 Broken fuser heater wire
The detection temperature of
fuser thermistor 2 is 100 °C/
212°F or less after the fuser
heater lamp has been turned
on continuously for 30 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.
Fuser heater and power source PWB (YC2)
Fuser thermistor and Fuser thermistor con-
nect PWB
Fuser thermistor connect PWB and engine
PWB (YC21)
Deformed connec-
tor pin.
See page 1-4-17.
Defective triac. See page 1-4-17.
Fuser thermostat
triggered.
Reinsert the fuser unit (see page 1-5-27).
Broken fuser
heater wire.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-40).
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 1-4-17.
Defective triac. See page 1-4-17.
Shorted fuser
thermistor.
Replace the fuser unit (see page 1-5-27).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-40).
Code Contents Causes
Check procedures/
corrective measures
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