there is a paper sensor that may need cleaning, if it is an LED clean it with a cotton bud. SWITCH OFF the m/c first.
Never use WD 40 on a shredder, use proper shredder oil. Take a piece of paper & place oil on it & place another piece on top, you are making a "sandwich" of the oil, then shred the paper.If you don't put the oil between the paper then the oil can contaminate the sensor
kingarthur
August 2007