The HP OfficeJet 7110 printer includes a built-in monitoring system for the ink cartridges to alert a user when ink is running low. When you replace the cartridges with new ones, the system resets automatically due to the chip built into the cartridge. If you refill ink cartridges, the printer may not recognize that the ink level has changed. You'll need to disable the monitoring service and reactivate it to reset the system.
Black Ink Cartridges
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Step 1
Press and release the left and right arrow keys on the printer's keypad at the same time. Press "7," "8" then "9" on the number pad.
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Step 2
Press "1" to disable the ink monitor when the display prompts you to confirm it.
Step 3
Press and release both arrow keys at the same time. Press "7," "8" then "9" on the number pad.
Step 4
Press "2" to reset the ink monitor.
Color Ink Cartridges
Step 1
Press the left and right arrow keys at the same time, then release. Press "4," "5" then "6" on the printer's number pad.
Step 2
Press "1" to disable the ink monitoring system.
Step 3
Press the two arrow keys together, then release. Press "4," "5" then "6" on the number pad.
Step 4
Press "2" when prompted to reset the ink monitor.