Xerox Phaser 6280 Service Manual page 554

Service Parts Disassembly
8-108
9. Release the convex part on the left and right sides of the Tray 3 Feeder
from the flange on the left and right sides of the Frame to remove the Tray
3 Feeder.
Phaser 6280 Color Laser Printer Service Manual
s6280-262