Quoted from epeabs:
Make sure your 3 advance buttons are in the up position on the inside of the coin door. Shut the machine off. When you turn it back on, it should be in regular attract mode.
The position of the door switches will not affect the machine upon boot up. Also, only the middle one has up/down latching positions.
Vibe - your game is booting to audit mode. Are the batteries good? Holder good? Battery power getting to the ram? Or did you install nvram?
Once in audit mode, you can turn the machine on/off quickly to get it to attract mode. Or use the coin door switches to travel through the menus. This doesn't fix the underlying issue, and you will have to do it each power up.