Reading schematic to MCR 5Mhz CPU board - help?

Bullwinkle

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OK, I'm now down to board level diagnostics on my demo derby. I'm noticing that the board schematic shows a +12v input at pin 18 on connector J1 (see below)

schematic1.jpg

I'm "assuming" because the schematic states +12vdc there, that there should be a +12v feed coming into that pin (which there is not... the connector does not have any wire for position 18 in the harness).

Here's the weird thing, the game actually has fired up previously with sound completely playable with the existing harness. So now I'm confused!

Also, just on the other side of the pin header for this connector, there are a bunch of resisitors and what look like diodes, but i think (if you look at the above schematic), it looks like they are ceramic capacitors? (Locations C215 & C216) .. can anyone give an explanation as to what I'm looking at here?

board1.jpg

any help is greatly appreciated..this game has been kicking my ass for months now.

thanks,

-tom

EDIT: Disregard this post. Was able to figure out what I'm looking at.
 
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