How to adjust sound on Japanese slot machine?

How to adjust sound on Japanese slot machine? heiwa slot machine ReconditionedCertified, Maker: Heiwa 32tall, wide, 16deep Uses tokens, comes with approx 1000 Works perfect and in very nice condition pirate chest slot S Cat`s Eye by Heiwa No reviews Save 0% Save % Original You will need to connect this machine to the voltage transformer or it will damage you machine

pirate chest slot Token To Quarter Conversion On A Pachislo Slot Machine Retro Gaming Refurbished 1977

best slot sites in the uk This is how the slot machine works Short sample  Vintage Heiwa Lupin The 3rd Japanese pachinko Slot machine, Very Good ConditionCollectables > Arcade, Jukeboxes & Pinball > Pachinko옥션 이베이직구