Whilst there used to be a setting in 12.3.2280 to wake the system up to run the scheduled scan, that option doesn't appear in the Scheduled Scan settings. My only assumption is 'what is the point of a scheduled scan if it doesn't wake up the system,' that however, is my logical thought on what the default should be.
That said, currently there is an issue with scheduled scans (which is still present in the latest release 17.2.2288), I don't know if this is related to the lack of an option to wake the system up to run the scheduled scan or not. But it has to be fixed.
