When the angle modulated wave in the signal picked up from {TAIL ~ the record disc} 10 has a normal level, the PLL 19 is locked by the angle modulated wave in a portion of the lock range, {HEAD ~ the width} of which is relatively large 
When the angle modulated wave in the signal picked up from { TAIL ~ the record disc } 10 has a normal level , the PLL 19 is locked by the angle modulated wave in a portion of the lock range , { HEAD ~ the width } of which is relatively large
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH 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 OTH OTH OTH OTH OTH