You can choose how long the machine will remain idle (from 1 to 60 minutes) before it goes into sleep mode. The timer will restart if any operation is carried out on the machine.
1
Press MENU.
2
Press or to display General Setup.
3
Press General Setup.
4
Press or to display Sleep Mode.
5
Press Sleep Mode.
6
Press 1 Min, 2 Mins, 3 Mins, 5 Mins, 10 Mins, 30 Mins or 60 Mins.
or 
to display