Dell H815DW User Manual page 495

4 Hold tray1 with both hands, and remove it from the printer.
5 Remove the jammed paper.
6 Insert tray1 into the printer, and push until it stops.
NOTE:
Do not use excessive force on the tray. Doing so could damage the tray or the inside of the printer.
7 Insert the MPF into the printer, push until it stops, and close the MPF.
8 Tap OK on the touch panel.
495
Clearing Jams