| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a game machine capable of inhibiting enlargement of an external shape of a base plate for noise countermeasures.SOLUTION: Besides an IC, a condenser, a coil and a resistor, connectors CN1-CN7 are mounted on the surface of a lamp control board 70. The lamp control board 70 has four layers. Namely, the lamp control board 70 has a first layer S1 to be formed on the surface, and a fourth layer S4 to be formed on the reverse face. Further, the lamp control board 70 has a second layer and a third layer that are located between the first layer S1 and the fourth layer S4. The first layer S1 includes a power-supply line disposed thereon, the second layer S2 and the third layer S3 include signal lines disposed thereon, and the fourth layer S4 includes a ground formed on a substantially whole surface. Consequently, the signal lines susceptible to noise influence is sandwiched between the power-supply line of the first layer S1 and the ground of the fourth layer.</p> |
