How to Fix Black Ink Printing Issues on HP Photosmart 7520?

To address the issue of your HP Photosmart 7520 not printing black ink, the first step is to perform a Printhead cleaning. You can do this by navigating to the Home screen of your printer and selecting the Settings icon, which looks like a wrench in the top right corner. From there, go to the Tools menu and select Clean Cartridges. It’s recommended to perform this cleaning at least three times to ensure that any clogs are cleared. After completing the cleaning, try printing a test page or a print quality diagnostic page. If the black box on the diagnostic is still empty, continue with the cleaning process. Sometimes, it may take a few attempts before the ink starts flowing properly again. Once the cleaning has been completed successfully and you see that the black ink is printing, it’s a good practice to perform this cleaning every time you replace your ink cartridges. Additionally, to prevent the ink from drying up in the nozzles, make sure to turn your printer on and off at least twice a week, especially if it’s not in regular use. This will help maintain the printer's performance and ensure that you don’t encounter similar issues in the future.