Lexmark MS821

SHPF elevator drive
3
4
2
1
1 Sensor (bin paper present)
2 Sensor (elevator, bottom)
3 Sensor (elevator, top)
4 Motor (elevator)
For each sheet that is ejected, the elevator bin lowers as the height of the bin stack increases. The movement
of the bin is controlled by the motor (elevator). The bin is detected at its upper and lower positions by sensors.
4064
Theory of operation
911