A driving mechanism first turns the first lever section, and thereafter turns the second lever section, thereby pushing out {HEAD ~ a disc} from {TAIL ~ the disc accommodation section} 
from
A driving mechanism first turns the first lever section , and thereafter turns the second lever section , thereby pushing out { HEAD ~ a disc } from { TAIL ~ the disc accommodation section }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL