Media Feeder Assembly; Media Feeder; Sensor (Media Size); Sensor (Pick Roller Position) - Lexmark M5150 Service Manual

Media feeder assembly

•
"Media feeder" on page 890
•
"Sensor (media size)" on page 890
• "Sensor (pick roller position)" on page 890

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 891
•
"MPF pick solenoid" on page 891
The MPF is a mechanical unit supplying media to the printer. The driving force from the main drive motor drive motor
is transmitted to the MPF pick roller to feed media.
Media feeder
Pick roller assembly
Appendix C: Theory of operation
890
4063