| 摘要 |
PROBLEM TO BE SOLVED: To not only prevent misunderstanding that an electronic component may be forgotten to be attached but also effectively prevent a fraud attaching a fraudulent component on the extra electronic mount planned part, even if there is an extra electronic component mount planned part in a game machine control board, in a transparent board case covering the game machine control board having the extra electronic component mount planned part in a state visible from the outside. SOLUTION: The transparent board case 35 for covering the main control board 23 which has the extra electronic component mount planned part 42, in the state visible from the outside is provided with an unused display part 39g displaying that the electronic component mount planned part 42 is in the unused state, in the upper part of the extra electronic component mount planned part 42. COPYRIGHT: (C)2008,JPO&INPIT
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