Auto sleep in 10mins: Press fn+s+l+r for four seconds.
Auto sleep in 20mins: Press fn+s+l+t for four seconds.
Auto sleep in 30mins: Press fn+s+l+y for four seconds.
Auto sleep in 10mins: Press fn+s+l+r for four seconds.
Auto sleep in 20mins: Press fn+s+l+t for four seconds.
Auto sleep in 30mins: Press fn+s+l+y for four seconds.