FUSING UNIT
G108 6-42 SM
6.9.5 TEMPERATURE CONTROL
CAUTION
Do not adjust or remove the thermistor [C], temperature control board [A],
or thermostats [B][D]. Proper and safe operation can not be guaranteed if
you remove or adjust any of these components.
Main Components
The fusing unit incorporates the following components for temperature control:
1. The fusing thermistor [C] and the temperature control board [A] sends a
signal when the fusing temperature goes past the (TSO-TA) threshold. The
fusing thermistor and the temperature control board are on the same
electrical circuit.
2. The fusing thermostats [B][D] “break” the electrical circuit when the fusing
temperature goes past the (TPS) threshold. The two fusing thermostats are
on the same electrical circuit as the fusing lamp. The fusing lamp goes off if
either one of the two fusing thermostats “breaks” the electrical circuit.
Note: Items 1 and 2 above are on two individual (separate) electrical circuits.
See next page for: TS, TA and TPS descriptions.
G108D915.WMF
[A]
[B]
[C]
[D]
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