| 摘要 |
PURPOSE: To make it possible to make an exchange of backup pins without requiring man-hours and cost. CONSTITUTION: In the case where backup pins 26 are exchanged to the kinds of a board 8, the pins 26 are previously inserted and are held arranged in prescribed hole parts formed in a backup base 17, the hitherto used backup base 17, is detached from the upper part of a top table 15 and a prepared backup base, is mounted on the table 15. |
