Alarm on Nishijin will not turn off

[Nadroj]

Hi.
I just got my first electronic machine.
When it is turned on, a loud alarm sound plays and does not stop. It sounds like a car alarm. A set of lights in the middle flash as well.
I can unplug the speaker, but the lights won’t stop flashing, and the rest of the electronic sounds and features don’t work.
I feel like it is an anti tampering alarm, but I can’t figure out how to reset it. There is a button on the side of the unit that displays the error code, but pushing it does not help. The display on back flashes 0, when I push the button it briefly flashes 8 then resumes blinking 0.
The ball hopper is full, this is not a low-ball alarm.


Please help if you can!


Thanks!!!