Xerox Phaser 7400

Theory of Operation 2-41
Imaging Unit Drive
The four Imaging Unit Motors supply the drive to the Imaging Unit drum and
Agitation Bar and Gear as shown in the following figure.
Transfer Unit Motor
The Transfer Unit motor turns clockwise driving the Transfer Unit belt. Inside the
Transfer Unit are four Transfer Rollers located just under each Imaging Unit drum.
When the Transfer Unit Motor and Imaging Unit Motors are activated, they carry the
paper on the transfer belt to the Fuser. The voltages applied to the Transfer Rollers
attract the toner image from the Imaging Unit drum to the media.
Imaging Unit Motor
Imaging Unit Drum
Agitation Gear
Agitation Bar
Imaging Unit
s7400-390