Hans,
Yes... there seem to be 8 schematic sheets (5 smaller and 2 larger) for the Aztec SS Proto.
There's also a full 8.5' x 2' overall wiring diagram, as well as a Solid State manual.
Oh yeah... and the game.

I got my paperwork separately from the machine... the Williams envelope they were in asks "Lou" to "return the old controller by UPS" to Al Gregg and to insure it for $500.00.
(I unfolded my originals, had professionally scanned, and then now have them rolled in a heavy-duty tube instead of re-folding.)

I also found out last year, that Williams also appears to have used this "System 2" in at least one prototyped Argosy. (so I'm told)

http://www.racepainter.com/temp/aztec/index.htm

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