Media Tray; Media Feeder; Sensor (Media Size); Sensor (Pick Roller Position) - Lexmark MS81x Service Manual

Media tray

•
"Media feeder" on page 604
•
"Sensor (media size)" on page 604
• "Sensor (pick roller position)" on page 604

Media feeder

The pick roller assembly which is part of the media feeder, is a mechanical unit supplying media from the media tray
to the paper path. The driving force from the media feeder drive motor, is transmitted to the two pick rollers to feed
media from the tray and is also used to lift the tray plate that is used to lift the media stack into contact with the pick
rollers.

Sensor (media size)

The sensor (media size) detects the size of media supplied from each media tray assembly. A system of four switches
is used to decode the media size, which is then sent to the controller board.

Sensor (pick roller position)

This sensor is used to determine if the lift plate in the paper tray is at the optimum position for media to properly pick.
As media is fed out, clearance will occur between the media and the pick rollers. When the specified amount of clearance
is determined by the sensor, the lift plate will be raised to position the media in the optimum position to be properly
picked.

Multi-purpose feeder (MPF)

• "MPF pick roller" on page 605
•
"MPF pick solenoid" on page 605
Media feeder
Pick roller assembly
Appendix C: Theory of operation
604
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