HP Deskjet 5850 Color Inkjet Printer - Manual (Page 82)

4. Print the document.
printer has a two-sided printing accessory attached
1. Press the buttons on the left and right sides of the Two-Sided Printing
Accessory, then remove it from the printer.
2. Remove any paper in the back of the printer.
If the paper jam is cleared, proceed to step 3 below.
If the paper jam is not cleared, proceed to step 1 below.
1. Press the button on top of the Two-Sided Printing Accessory, then lower the
access door.
2. Remove any paper from the Two-Sided Printing Accessory, then close the
access door.
3. Reinsert the Two-Sided Printing Accessory into the printer until both sides snap
into place.