Smart Tank registers empty but the tank is full

[ajm1217]

HP Smart Tank 720 All in One shows that my magenta tank is empty, but it is full, thus, the printer when printing in color prints everything with a green tone. I have cleaned the printhead, but the printer information report continues to show that the magenta tank is empty.

[A_Gayathri]

Hi @ajm1217 ,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand you're encountering an issue with your HP Smart Tank 720 All-in-One printer where it's indicating that the magenta ink tank is empty even though it's full. This can be frustrating, but there are a few steps you can try to troubleshoot and resolve the issue:

Restart the Printer: Sometimes, a simple restart can resolve temporary glitches. Turn off the printer, unplug it from the power source, wait for a few minutes, and then plug it back in and turn it on.

Check Ink Levels Manually: Open the ink tank compartment and visually inspect the magenta ink tank to ensure it's properly seated and filled with ink. Make sure there are no leaks or other issues with the tank.

Clean the Electrical Contacts: Turn off the printer and disconnect it from the power source. Open the ink tank compartment and remove the magenta ink tank. Clean the electrical contacts on both the ink tank and the printer using a lint-free cloth lightly moistened with water. Ensure that no residue or debris is left on the contacts.

Update Printer Firmware: Ensure that your printer's firmware is up to date. Manufacturers often release firmware updates to address bugs and improve printer performance. You can usually update the firmware through the printer's settings menu or by visiting the HP support website. HP Smart Tank 720 All-in-One Software and Driver

Reset the Printer: If the issue persists, you may need to reset the printer to its default settings. Refer to your printer's user manual or HP's support website for instructions on how to perform a reset.

Refer to this document: HP Smart Tank 720 series

I hope this helps. 

Take care and have a good day.

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