Fuser Unit
Fuser film unit
Fuser
pressure
roller
Fuser
heater
(H1, H2)
Fuser heater
control circuit
Fuser heater safety circuit
Fuser control circuit
Low-voltage power supply PCA
DC controller PCA
Figure 4-7 Fuser control circuit
The fuser unit, with the CPU, the fuser-heater safety circuit, and a thermoswitch, protects the fuser
heater from abnormal temperature increases.
The CPU provides fuser-unit-failure detection and notifies the formatter when a fuser-unit failure is
detected.
ENWW Print engine 111
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