I have a printer Canon Pixma MP145..... I need Help.... printer keep on blinking " 3 E " .... how to restore it back to normal. I cannot print! i have press all d button.... : (. Sponsored Links ... Answer. my printer canon pixma MP140 All- in-One is not printing! The light in B keeps flashing and its says... (More) my printer canon pixma MP140 All-in-One is not printing! The light in B keeps flashing and its says E4! whats the problem? Close Close ...