The two tones were detailed in the manual - I sold my SOF so I no longer
have the manual so sorry I can't give you the page #. I think the
mem.prot failur emessage for the CPU may be because the coin door is
open. Make sure it's shut and try again. Before I sold it I got the
updated sound and CPU roms - I could tell the play/rules had been
updated but didn't fix my speech problem. That said if you are only
having problems with some of the sounds new roms might fix the problem.
Btw SOF is a great game - I'm still sorry I sold mine!