PROBLEM TO BE SOLVED: To easily determine whether or not an arrangement pattern of lower receiving pins having been exchanged is correct.;SOLUTION: A correct/incorrect determination method for arrangement pattern that determines whether an arrangement pattern of pins 240 corresponding to a substrate 82 to be mounted is correct or incorrect with respect to a component mounting machine which mounts a component on the substrate 82 supported by a plurality of pins 240 arranged on a low receiving plate 230 includes: a determination pin information acquisition step of acquiring determination pin information showing the arrangement position of a determination pin 241 as a pin 240 arranged on the lower receiving plate 230 and used to identify the arrangement pattern of the pins; an imaging step of moving a substrate camera 220 to a position where the arrangement position that the determination pin information indicates can be imaged and imaging the arrangement position by the substrate camera 220; and a determination step of detecting whether there is the determination pin 241 at the arrangement position based upon an image obtained in the imaging step and then determining whether or not the arrangement pattern corresponding to the substrate to be mounted is correct.;COPYRIGHT: (C)2010,JPO&INPIT
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