HP PSC 2210xi All-in-One Printer - Manual (Page 15)

load paper 9
hp psc 2200 series
3 Insert paper into the paper tray print-side down until it stops. If you
are using letterhead, insert the top of the page first.
Be careful not to use too much or too little paper. Check that the stack
of paper contains several sheets but is no higher than the top of the
paper-length guide.
4 Slide the paper-width and paper-length guides in until they stop at the
edges of the paper. Make sure that the paper stack lies flat in the
paper tray and fits under the tab of the paper-length guide.
5 Replace the output tray.
6 To prevent printed paper from falling off the tray, fully extend the
output-tray extender.