Hello,
Here are the Steps:
1) Login to SEPM
2) Click on Monitors > click on Logs Tab
3) Click on drop down option of Log type to "Scan"
4) Selcte the correct time range
5) Click on Advance Settings and Select the correct option
6) Click on View Log.
The Scan log contains information about antivirus and antispyware scan activity.
Available information includes items such as the scan start, computer, IP address, status, duration, detections, scanned, omitted, and domain. No actions are associated with these logs.
Reference: About log types
http://www.symantec.com/docs/HOWTO27271
Hope that helps!!