2NC/2NF/2NG/2NN/3P7/3P8/3P9
1-4-29
6030 Broken fuser thermistor 2
wire (Center)
Input from fuser thermistor 2
is 1012 or more (A/D value)
continuously for 5 s.
Input from fuser thermistor 2
is1012 (A/D value) or more
whenthe temperature at the
fuser thermistor 1 is 70°C/
158°F or more.
Fuser unit 1. Check that no paper jam is present.
2. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser unit and main/engine PWB
(YC14)
3. If the wiring is disconnected, shorted or
grounded, replace the wiring.
4. Replace the Fuser unit and execute
U167 counter clear (see page 1-3-56).
(Deteriorated sensitivity due to the toner
adhered to the center thermistor.)
Main/Engine PWB 1. Check the main/engine software and
upgrade to the latest, if necessary.
2. Replace the main/engine PWB (see
page 2-2-11).
Fuser thermistor 2 1. Replace the Fuser unit and execute
U167 counter clear (see page 1-3-56).
Fuser thermostat
(triggered)
1. Confirm that the wiring connector is
firmly connected and, if necessary, con-
nect the connector all the way in.
Fuser unit and fuser heater PWB (YC1)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the Fuser unit and execute
U167 counter clear (see page 1-3-56).
Code Contents Related parts
Check procedures/
corrective measures
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