Xerox 8500DN Service Manual - Page 57

Paper Pick for Tray 1 Theory of Operation To pick a sheet of paper, the Tray 1 solenoid actuates, and the drive gear rotates slightly to engage with the drive train. A bias force from the lift plate against a rotating cam causes the roller to rotate enough so the missing tooth gear engages the drive train. This allows the lift plate and paper stack to rotate against the Pick Roller. The Pick Roller then rotates to pick the paper. A Separator Pad prevents multiple sheets from being picked by the Pick Roller. Key differences in the Tray 1 pick process include: ■ Increased lift plate force to support heavier paper. ■ 100-sheet capacity. ■ Pick Roller to create the buckle for the deskew process. ■ Pick Roller drive to disengage when the door is opened and closed. ■ Pivoting separator pad to prevent it from binding. Drive Gear Cam Pick Roller Spring Loaded Lift Plate Separator Pad s8500-024 Phaser 8400/8500/8550/8560 Color Printer Service Manual 2-25