Engine Pcb - Brother IntelliFax-4750 Service Manual

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Engine PCB

On the engine PCB is a gate array which converts serial signals sent from the main PCB into

parallel signals. According to those signals, the engine PCB controls the following:

- Motors--main motor, fan motor, and polygon motor

- High-voltage power supply

- Solenoid(s)

- Heater thermistor

- Sensors--cover sensor, toner sensor, manual insertion sensor, registration sensor(s), and

cassette sensor(s)