I'm a pinball person and got an Aero Guys Pachislo in a trade. I've cleared the error by resetting it. There are no tokens inside. It appears to boot and goes into attract mode.
Is it possible to trick it into letting me play and test that it works without tokens?

I found a few tokens - they all fell into the front tray (rejected).
I got the coin mech to work by taping the spring loaded arm down - so now the tokens go into the hopper (which I don't understand how that feeds tokens - but that's for later).

Sorry for such a noob question - if it's been asked/answered - pls point me to the topic/thread.
Thanks