Dell 5100cn Color Laser Printer User Manual page 152

13. Close the front cover.
14. Insert the tray into the printer, and push until it stops.
NOTICE: Do not use excessive force on the tray. Doing so could damage the tray or the inside the printer.
Removing Print Jams From the Duplexer
NOTE: To resolve the message displayed on the operator panel, you must clear all print media from the print media
path.
1. Push the side button and open the outer front cover.