HP Officejet 7612 Wide Format e-All-in-One - Manual (Page 302)

Ink sensor warning
The ink sensor is reporting an unexpected condition. This could be caused by the cartridge, or the
sensor may have failed. If the sensor has failed, it can no longer sense when your cartridges are out
of ink. Printing with an empty cartridge will cause air to enter the ink system, which causes poor print
quality. Significant amounts of ink will be used up to recover from this condition, which will deplete
much of the ink supply for all cartridges.
Solution: Click OK to continue printing or replace the cartridge. For information about how to install
new cartridges, see Replace the ink cartridges on page 92.
ENWW Ink sensor warning 285