wherein said determination means resets {HEAD ~ the number} of {TAIL ~ the errors} with the value not less than the predetermined value at said stop position and the number of the transfer failures when said machine difference data is obtained again 
of
wherein said determination means resets { HEAD ~ the number } of { TAIL ~ the errors } with the value not less than the predetermined value at said stop position and the number of the transfer failures when said machine difference data is obtained again
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH