new 564 cartridges installed...black does not work

[brooklyn221]

HP photosmart 6520....all new 564 cartridges all levels come up as full but when I do print quality diagnostic black comes up blank

[sandytechy20]

@brooklyn221

Welcome to HP support community.

Check the ink cartridge vents

1. Open the ink cartridge access door.

   

2. Press the tab on the front of the ink cartridge to release it, and then pull it out of the slot.

   

3. Examine the vent area on the top of the ink cartridge.

   

4. If the vent is clogged, use a pin to gently remove excess adhesive from the vent.

   1.  

   2. Clogged vent

   3. Gently remove excess adhesive from the vent

   4. Unclogged vent

5. Make sure the orange pull tab is completely removed.

   

6. Insert the ink cartridge into its slot. Press down until it snaps into place.

7. Repeat these steps for any other ink cartridges with defects on the report.

8. After reinserting all the ink cartridges, run your finger along the top of the ink cartridges. If any are protruding, press down firmly until each ink cartridge snaps into place.

9. Print another Print Quality Diagnostic report.

You can refer this HP document for more assistance:- Click here

I hope that helps.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.

Cheers.