What should I do if the defect rate for SMT placement in an electronics factory is high? What are the most common points of failure during line changeovers?

SMT lines often have issues as soon as materials are changed. It looks like equipment trouble on the floor, but often it's because the handoff between the front and back ends wasn't communicated clearly. Part numbers are similar, feeder positions have been changed, and first-article confirmation is rushed, so you only start checking back after the AOI reports a pile of errors. The most annoying…