Sensors; Cover Sensor; Toner Empty Sensor - Brother HL-820 Service Manual

2.3

Sensors

2.3.1

Cover Sensor

Detects opening and closing of the top cover.
Top Cover
2.3.2

Toner Empty Sensor

Detects if there is toner in the toner cartridge. It also detects whether or not the drum unit
is installed. (The toner cartridge is installed in the drum unit).
Toner Empty
Sensor
Cover Switch
Fig. 2-35
Fig. 2-36
II-29