asked Jul 6, 2019 at 10:28am
Hp HP OfficeJet 4620

Black Ink Won't Print

Black ink is still not printing despite installing a new cartridge. Although the 4 sets of square brackets around the color levels do show up. Interestingly, the first set of square brackets which is suppose to show the level of black ink available is blank.

One thing you can try is to flush the print head, Step 1 is to remove all the ink cartridges. Step 2 is to lift the lever to the right of the cartridge holder. Step 3 is remove the head assembly. Step 4 is to take it over to the sink and flush the screen under hot running water, then turn it over and flush the heads on the bottom. Repeat until the water is mostly clear looking.

Reinstall and try again. If it still fails, you will have to replace the head assy.

by moe on Jul 7, 2019 at 5:02pm Add comment

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by sukalu88 on Nov 20, 2019 at 9:22pm Add comment