Xerox PHASER 7500, Service Manual

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2-24 Phaser 7500 Printer Service Manual
Theory of Operation
Paper Feed from Tray 1 (MPT)
As the paper feed from the Tray 1 (MPT) is starting, forward rotation (CW
direction) of the Tray 1 Feed/ Nudger Motor lowers the Nudger Roll to contact the
paper.
Next, reverse rotation (CCW direction) of the Tray 1 Feed/ Nudger Motor rotates
the Nudger Roll and Feed Roll.
The paper is fed in between the Feed Roll and Retard Roll by the Nudger Roll and
then transported towards the Drive Roll by the rotation of Feed Roll and Retard
Roll.
The spring pressure and the Retard Roll press against the Feed Roll to perform the
role that separates paper by using rotation resistance.
When there is paper overlap, the brake force of the Torque Limiter that is linked to
the Retard Roll separates the top most paper from the rest and feeds it.
s7500-361
Nudger Roll
Feed Roll
Retard Roll
MSI Feed/Nudger Motor
Nudger Roll Feed Roll
Retard Roll