The magnetic field produced by the coil of the stepper motor interferes with the capability of the readhead to recognize {HEAD ~ the magnetic indicia} on {TAIL ~ the check} 
The magnetic field produced by the coil of the stepper motor interferes with the capability of the readhead to recognize { HEAD ~ the magnetic indicia } on { TAIL ~ the check }
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 HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL