W820 (4025-xxx)

4025-XXXMechanical DriveMechanical Drive is a term that is used to describe both the rotation of the printer motorsand the action of the gear clusters and clutches that are used to transmit and controlmotor rotation to the various components throughout the printer. The primary purpose ofMechanical Drive within the base printer is to drive a sheet of paper out of a selectedpaper tray, through the printer synchronous with the photo conductor surface and into anoutput tray. The Printhead Motor is not considered part of Mechanical Drive.The Main Drive Motor turns the Main Drive Assembly gears. The Drum Motor turns aseparate set of gears within the Main Drive Assembly. The Main Drive Motor and DriveAssembly provide drive to the Feed Clutches, the Registration Clutch, the Fuser, and theExit Clutches. The Drum Motor and Drive Assembly provide drive to the Drum and BTR.Lift Motors supply drive to each paper tray; raising the Bottom Plate of each tray so thepaper stack contacts the Feed Rolls. The Offset Motor provides drive to the Offset Rolls.1-28 Service Manual