Lexmark W820 - Optra B/W Laser Printer Service Manual page 24

Drive for Shift Roller Unit & Main Paddle & Sub Paddle
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In the transmission of a driving force to the Shift Roller, the rotation of the Compiler Tray
Feed Motor transmits a driving force to the Shift Roll Gear 1, to rotate the Shift Roller. At
the same time, the rotation of the Shift Roll Gear 1 rotates the Shift Roll Gear 2 via the
Shift Roller. The rotation of the Shift Roll Gear 2 transmits a driving force to the Shift
Transmit Pulley. The Paddle Drive Belt on the Shift Transmit Pulley transmits a driving
force to the Sub Paddle Pulley, and the rotation of the Sub Transmit Pulley rotates the Sub
Paddle.
In the shift of the Shift Roller Unit, the clockwise or counterclockwise rotation of the Shift
Motor moves up or down the unit.
In the transmission of a driving force to the Main Paddle, the rotation of the Compiler Tray
Feed Motor transmits a driving force to the Main Paddle Gear via the Transmit Gear.
Then, the rotation of the Main Paddle Gear rotates the Main Paddle.
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The Shift Handle is manually rotated to rotate the Shift Handle Gear. The rotation of the
Shift Handle Gear transmits a driving force to the Shift Roll Gear, to rotate the Shift Roller.
And the rotation of the Shift Roll Gear also transmits a driving force to the Shift Transmit
Pulley. The Paddle Drive Belt on the Shift Transmit Pulley transmits a driving force to the
Sub Paddle Pulley, and the rotation of the Sub Transmit Pulley rotates the Sub Paddle.
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Service Manual
4025-Finisher
The driving force transmitted by the Compiler Tray Feed Motor
The driving force transmitted by the Shift Handle