HP Forums

I have a Laserjet 1220c profession series which gives me a printing problem. When I give a print test command it does not go but rather complain with the catridge light indicating contineously. I have change the ink replacing it with a new catridges and still no luck.
What can be the problem and solution(s) if possible?

This forum, as it says in bold red font, is for HP CALCULATORS. This probably isn't the best place to ask.