METHOD FOR INSPECTING SUBSTRATE-SUPPORTING STATE

摘要

PROBLEM TO BE SOLVED: To avoid occurrence of interference between electrical components and a support member at supporting of a printed board by its electrical components mounted surface in the course of mounting electrical components on both surfaces of the printed board. SOLUTION: Before electrical components 17 are mounted on the second surface 136 of the printed board, an F mark of the surface 136 is photographed by means of an F-mark camera 150. When the difference between the actual position and preset position of the F mark exceeds a preset allowable value, it is discriminated that the parts 17 and support member interference with each other and the mounting work is stopped.