Look at your display if it's displaying coordinates (X *** Y ***) push the enter key, then give it a couple of minutes and it will go into sleep mode (fan will shut off). If you adjust the vinyl with the arrow keys and don't hit the enter key it wont go into sleep mode. If you advance the vinyl with the arrow keys to cut off the job you just cut and don't hit the enter key it won't go into sleep mode. Hope this helps. Can't help you with guessing the age.