Cassette Sensor / Paper Empty Sensor; Paper Eject Sensor - Brother MFC-8220 Service Manual

CHAPTER 3 THEORY OF OPERATION
2.4.3

Cassette sensor / Paper empty sensor

Detect if the paper tray is installed. They also detect if there is paper in the paper tray.
Cassette sensor PCB ASSY
2.4.4

Paper eject sensor

Detects if paper is ejected from the fixing unit.
Eject sensor PCB ASSY
Fixing unit
Fig. 3-26
Fig. 3-27
3-18
Paper empty sensor
Cassette sensor