I have an HP 2605n printer and every time I try to print the paper doesn't feed and the printer says it has a "paper jam". I've taken out the pick-up roller and cleaned it off, but it appears to be new and not smooth at all (very rubbery/bumpy).
I've noticed that I can sometimes force the printer to print by wiggling a small knob on the front of the paper tray up and down. The printer also makes a squeaking sound unless I force it to print this way. Any ideas?