| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrical components mounting substrate which does not need a wide substrate area and reduces cost in order to cope with a plurality of systems which are alternatively and not simultaneously selected, the electrical components mounting substrate being able to mount the electrical components corresponding to the systems. SOLUTION: In an electrical components mounting substrate 1 on which a plurality of electrical components are mounted, individual mounting patterns 2, 3 of the components, which are alternatively and not simultaneously selected, are disposed at a single position.
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