Replacing print cartridges
When buying print cartridges, look for the print cartridge selection number.
You can find the selection number in three places:
• Selection number label: Look at the label on the print cartridge that you are
replacing.
HP Deskjet 3840 series printer
63
1. Selection number label
• Printer documentation: For a list of print cartridge selection numbers, see the
reference guide that came with the printer.
• Print Cartridge Ordering Information dialog box: For a list of print cartridge
selection numbers, open the printer
Toolbox
, click the Estimated Ink Level tab,
and then click the Print Cartridge Ordering Information button.
If a print cartridge runs out of ink, the printer can operate in the
ink-backup mode
.
For information about installing a print cartridge, see the
print cartridge installation