Hi guys. I have this problem with a Toshiba e161. The toner motor goes on and on and the led is blinking and it doesn't stop. It has the right amount of developer. I cleaned the developing unit and the senzor. The toner seems ok. I'm stuck. It does the same with 2 different developing stations. Can the toner be the problem? What exactly activates the toner led? How does it sense that it need toner in developer? It is the senzor at the bottom of the developing station, the one i mentioned about? After i put new developer in the station , it worked fine. I took out the fuser to clean it and when i put it all back in the machine, it started doing the same thing.