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1 Selection number label
● Printer documentation: For a list of print cartridge selection numbers, see the
reference guide that came with the printer.
● HP Printer Utility: Open the HP Printer Utility and then select the Supplies pane.
If a print cartridge runs out of ink, the printer can operate in ink-backup mode.
For information about installing a replacement print cartridge, see the print cartridge
installation page.
Ink-backup mode
Use the ink-backup mode to operate the printer with only one print cartridge. The ink-
backup mode is initiated when a print cartridge is removed from the print cartridge cradle.
Ink-backup mode output
Printing in ink-backup mode slows the printer and affects the quality of printouts.
Installed print
cartridge
Result
Black print cartridge Colors print as grayscale.
Tri-color print cartridge Colors print but black is grayed and is not a true black.
Photo print cartridge Colors print as grayscale.
Gray photo print
cartridge
Colors print as grayscale.
Note HP does not recommend using the photo print cartridge or the gray photo
print cartridge for ink-backup mode.
Exit ink-backup mode
Install two print cartridges in the printer to exit ink-backup mode.
For instructions about installing a print cartridge, see the print cartridge installation page.
Chapter 3
16 HP Deskjet 6980 series