C350 malfunction code c-0501

After replacing the fuser unit, if you got a c0501 code you must open the front door where the toner is. On the right side (hinge side) next to the black toner and drum unit there is a plastic pannel/cover. In the lower portion of that pannel there is a hole where a trouble reset switch is loacted. With a flashlight you may be able to see it. You are ment to use a thin screw driver or the like to push the button. You do this while the machein is on and desplaying the code. As soon as you press the button the copier will clear the code and start warming up. Thats it! If you are un certin of the button placement you can take out three screws from the pannel and loosen one screw from the pannel above it and and pull the pannel off the unit. You will see the board and it is the button on the (left), as there are two of them. Tho you only have access to the one thru the cover.