Lexmark C912 Service Manual - Page 214

5055-xxx Electrical parts function • Finisher Set Switch-detects the connection with the printer. • Staple Cartridge Set Switch-detects when the staple cartridge is open. • Staple Existence Sensor-detects when the stapler is empty. • Staple Home Position Sensor-locates home position for stapling. • Paper Register Sensor-detects when paper enters into the finisher, detects paper jams and triggers the punch. • Paper Exit Sensor (Upper Tray) (Letter), Invert Path Sensor (A4)-detects when paper feeds into the lower tray, the end of jogged paper and paper jams. • Paper Exit Sensor-detects that paper has exited the printer. • Tractor Home Position Sensor-locates home position for the drive belt. • Elevator Upper Limit Sensor-detects when the lower tray is at the highest position. • Jogging Home Position Sensor-locates home position for the jogging bar. • Paper Detecting Sensor-detects when the paper is at the correct position for stapling. • Paper Full Sensor A-detects when there is a full stack of paper on the lower tray. • Paper Upper Level Sensor B-Locates the top of the stacked paper on lower tray. Also detects when paper is removed from stacked papers on the lower tray while stacking. • Elevator Lower Limit Sensor-detects when the lower tray is at the lowest position. 3-64 Service Manual