Device for detecting the connectivity of {HEAD ~ a monitor} and inhibiting {TAIL ~ a data reproducing operation} 
Device for detecting the connectivity of { HEAD ~ a monitor } and inhibiting { TAIL ~ a data reproducing operation }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL