Shift Section - Lexmark W820 - Optra B/W Laser Printer Service Manual

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
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Service Manual
4025-Finisher
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.