Kyocera TASKalfa 5551ci - Abnormally Low Fuser Press Thermistor 4 Temperature

2L6/2N6/2N5/2N4
1-4-123
6150 Abnormally low fuser press
thermistor 4 temperature
Fuser press thermistor 4
detects a temperature lower

warming up.
Fuser unit 1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser unit and Engine PWB (YC26)
If the wiring is disconnected, shorted or
grounded, replace the wiring.
2. Replace the Fuser unit and execute
U167 counter clear (see page 1-3-112).
Engine PWB 1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
80).
Fuser IH PWB 1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser IH PWB( YC4) and Engine PWB
(YC26)
2. Replace the fuser IH PWB (see page 1-
5-96).
Fuser IH unit 1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser IH unit and Fuser IH PWB (YC9
and 10)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the fuser IH unit (see page 1-5-
70).
Code Contents Related parts
Check procedures/
corrective measures