After removal of the defective circuit pattern sheet 2′, the first PCB sheet {HEAD ~ 4 a} is position located by {TAIL ~ means} of a position locating means 12 
is position located by
After removal of the defective circuit pattern sheet 2′ , the first PCB sheet { HEAD ~ 4 a } is position located by { TAIL ~ means } of a position locating means 12
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH