Quoted from urbanledge:
I'd still like to see what they are.
Anyways I cant get to the options anymore.
What is the red switch on the cpu supposed to do?
This is my first bally mpu game
The red switch on the cpu is the audit clear button. It shares the same function as the center credit switch during audit mode which is to clear the currently displayed audit back to zero (except for audits 16 and over).
For audits sixteen and over set them to '03' with the start button. Sometimes you get junk values in these audits when the ram is corrupted by lack of battery or switching between games with NVRAM. To clear them out sometimes you have to cycle a few times with start button until you see normal values (01, 02, etc.).
The function of these audits is typically in the manual. The flow of the manual is a bit confusing as it seems to jump around talking about audit mode and dip switches. Read page 4, 6, 8, and 12 of the black pyramid manual where it talks about "self test position XX". Most games I have found it is is pretty safe to just set them all to "03", but the manual should have the info if you dig into it.