My SPL-1506X stopped working ?

It turns on so its not the fuse ...
It wont run either direction Ive cleaned it
but not greased it (I don't know what to use )
No other indicator lights come on so...?

The real question is when I put paper in it it makes a click sound what is that ? I know a sensor but what can I do to get my shredder up and running again

Thanks so much for your time