Frank_g

asked Jun 22, 2011 at 5:41pm
Hp HP OfficeJet Pro L7680

HP L7680 Air in lines

I have a problem with printing black on this printer. All colors okay. All tests except alignment pass. Printhead test okay, plenty of ink. It appears I have air bubbles in the black ink line from the tank to the printhead. How can I get the bubbles out?