I have a Gottlieb Volcano (system 80 model 667) that is using a sound & speech board from a Gottlieb Caveman (system 80A model PV-810).
• The schematics from the Volcano manual are for revision 1 of the A6 board (B-20887-1).
• The schematics from the Star Series System 80 Service manual are for revision 3 of the A6 board (B-20887-3).
Even though the Caveman board is a B-20887-3, the components on my PV-810 board don't quite match up with either schematic.
Maybe the Caveman manual contains the correct schematics?
The thread where this came up: https://pinside.com/pinball/forum/topic/gottlieb-80-sometimes-a-random-continuous-sound-on-boot#post-6452568
So if anyone has Caveman or the Caveman manual, that would be great! Thank you!