the actual position of the mounted semiconductor chip which was detected and calculated by {HEAD ~ the second camera} after mounting deviates from {TAIL ~ the setpoint position} by more than a predetermined amount 
the actual position of the mounted semiconductor chip which was detected and calculated by { HEAD ~ the second camera } after mounting deviates from { TAIL ~ the setpoint position } by more than a predetermined amount
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH