Canon iPF671 Service Manual page 122

Chapter 2
Cutter Left Position Sensor
Paper detection sensor
A photoreflective type sensor. When a media is fed from the manual feed unit and roll feed unit, this sensor detects the presence of media by receiving the light
reflected from the media.
Cutter HP sensor
The photointerrupter-type sensor detects the presence of the cutter at the home (rightmost) position.
Cutter left position sensor
The photointerrupter-type sensor detects the presence of the cutter at the leftmost position.
Pinch roller pressure release switch
A micro switch type pinch roller pressure release switch detects the application/release of pinch roller pressure. The pinch roller pressure release switch is depressed
when the media release lever is set and detects the pressure of the pinch roller.
2-54
Paper Detection Sensor
Cutter HP Sensor
F-2-45
Pinch Roller Pressure
Release Switch