| 摘要 |
PROBLEM TO BE SOLVED: To propose a method for protecting a modified wiring that is added and wired according to modification, addition, or the like in a circuit from damaging and burning in a printed circuit board packaging electronic components onto a substrate. SOLUTION: When the modified wiring 27 is wired over the front and back surfaces of the circuit board in the printed circuit board 21, a wiring protection member 29 is provided in a through hole 28, an opening, or a notch formed on the printed circuit board. In this case, the wiring protection member 29 is provided to relieve the bending of the modified wiring 27 wired through the through hole 28, opening, or notch.
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