Lexmark W820 Service Manual - Page 44

4025-Finisher Shift Section After the trailing edge of paper passes the Fin Path Roller, the Exit Pinch Roll Guide opens upward. Then, the Shift Roller Unit is moved forward or backward to perform an offset job, and, at the same time, the Shift Roller rotates to transfer the paper toward the Exit Roller. Also, each time a sheet of paper is moved forward or backward, the Exit Pinch Roll Guide closes and the Exit Roller rotates to deliver the paper. Then, at the specified pulses after the Fin Exit Path Sensor detects the trailing edge of the paper, the Shift Roller Unit returns to the home position. The operation is repeated if the shift job is executed. Note: The shift job cannot be executed if the stapling job is performed. Shift Components • The Fin Path Sensor monitors the paper passing condition between the Fin Input Roller and the Regi Roller. • The Fin Exit Path Sensor monitors paper passing condition before the Shift Roller. • The Shift Roller transfers paper toward the Exit Roller. • The Shift Roller HP Sensor detects the home position of the Shift Roller Unit. 1-32 Service Manual