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