FIRST OF ALL, LET ME THANK YOU ALL FOR YOUR PREVIOUS ASSISTANCE. YOU WERE ALL VERY HELPFUL. NOW, TO MY CURRENT PROBLEM. I HAVE A CANON BJC 4400 PRINTER THAT WILL NOT RESET TO PRINT. THE YELLOW LIGHT ON PRINTER REMAINS ON. HOW DO I DETERMINE WHETHER THE PROBLEM IS WITH THE PRINTER OR WHETHER IT JUST NEEDS A NEW PRINT HEAD? THANK YOU VERY MUCH.