On the left side from the front about half way up is a micro switch that when I push it with my finger a female voice says a phrase in Japanese. It appears as if there is nothing there that might activate it. Anyone have any idea what it’s for and how it is activated. It would be cool if it did that during play or during a jackpot.

Heres a video https://youtube.com/shorts/8L1eYGHNfSw?feature=share

Thanks in advance