HP 2400 - Manual (Page 35)

reference guide
use a photo memory card
25
mem
or
y ca
rd
1 Select the photos to print by using a dark pen or pencil to fill in the circles
located underneath the thumbnail images on the proof sheet.
2 Select one layout style by filling in a circle in step 2 of the proof sheet.
Note: If you need more control over print settings than the proof sheet
provides, you can print photos directly from the front panel. See print photos
directly from a memory card on page 28.
3 Place the completed proof sheet face down on the right front corner of the
glass with the top of the sheet touching the right edge, and then close the
lid.