Xerox 3450B - Phaser B/W Laser Printer Service Manual page 117

5.
Remove the e-ring that secures the Registration Clutch to the Feed Roller Shaft
and remove the Registration Clutch.
6.
Remove the screw securing the Cover Interconnect Board to the Main Drive and
move it out of the way.
7.
Remove 6 screws that secure the Main Drive to the printer chassis, and remove
the Main Drive.
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