1) Reset the system by holding down the OK, Cancel, Black, and Color
buttons down at the same time and turn the 3310 off. Keep holding
the buttons down until the printer shuts off and the turn it back
on. You will have to turn the printer off twice and then it will
recalibrate. Make sure you have new cartridge in the printer so that
it can reset.

I saw this item on a printer repair forum last week. Tried this 8 or 10
times. No help.

2) There is a patch available for your printer that might fix the
the problem. The link below is to HP's site.

http://tinyurl.com/7jqdc3

This is for another model printer. While similar, there is no such patch for
the 3110/3210/3310 printers. I'm not encouraged...

Thanks for your reply.