Method of inspection for a sewing machine and sewing machine for performing said method

摘要

Testing a sewing machine by rotating the arm shaft (6) from a start position to a series of test positions while monitoring the angle of rotation with a position sensor (9) comprises using another position sensor (31) to determine if certain sewing tools are in a predetermined start position when the arm shaft is in its start position. An independent claim is also included for a sewing machine equipped to perform a test as above.