HP Deskjet 6122 Color Inkjet Printer - Manual (Page 111)

checking the print cartridge status
understanding the print cartridge status light
The Print Cartridge Status light flashes when one or both of the print cartridges are
low on ink, improperly installed, missing, or malfunctioning. This light also flashes if
the wrong print cartridge type is used.
1. Print Cartridge Status light
If the ink level is low in a print cartridge, the Print Cartridge Status light stops flashing
when the printer's top cover is opened or the printer is printing. If the problem is not
related to low ink, the light continues to flash after the cover is opened.
checking the print cartridge status
Open the printer's top cover. The arrow on the top of the print cartridge cradle points
to one of five Print Cartridge Status icons revealing the status of the print cartridge.