Where are the adjustment controls for my Amplifone monitor?

fmc819

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I just got a Star Wars upright, and the edges of the display go beyond the edges of the monitor, if that makes sense. For example, the shield and score can't be fully seen, or the edges of the xwing guns.

I found the dial that seemed to manage brightness in focus, although oddly, I seem to have two sets of those. On the monitor PCB I can see six adjustment screws, three of which seemed to have to do with color as far as I can tell. The other three, I'm not sure what they do because when I turn them, it doesn't seem to change the monitor geometry. Anyways, so I don't screw anything up, can someone point me in the right direction? I've looked online, but the only video I found where someone is making those adjustments has a different looking board.
 
See this post, and the one it links to:


Also, if your screen is too big, it's possible your HV may be too low. If you own any arcade games, but especially vectors, you really should own an HV probe, so you can correctly measure and adjust the HV level. You may have issues with your HV board, in which case trying to adjust them away with the game board will not be the right solution. Search here for 'fluke 80k-40' or 'PR28A' for the two probe models most folks here have.
 
X and Y size adjustment POTs are on the SW logic PCB. You really should read and understand the manuals for the game and monitor.
And not depend on watching videos.


Thanks. I only had the operators manual which didn't specify the answer to what I'm asking. I would not have known that there were other manuals out there to look at and without knowing they exist, can't know to look through them. Thanks for the resource.
 
I re-read your first post.. I'd start by adjusting X and Y size pots on the game board.
The are generally poorly labeled.. here is a cheat sheet.
Adjust the size first and the CTR (centering) second.. leave the others for now until you get the game back on the screen.

1760556485565.png
 
Adjust in TEST MODE with the cross-hatch pattern.

SW_Crosshatch.jpg
 
I re-read your first post.. I'd start by adjusting X and Y size pots on the game board.
The are generally poorly labeled.. here is a cheat sheet.
Adjust the size first and the CTR (centering) second.. leave the others for now until you get the game back on the screen.

View attachment 854872
Thank you (also everyone else who has replied). I'll look for it when I get home later. I mistakenly thought it would be on the Amplifone board. I didn't pull the whole main board out because the wires were taut but I'll just disconnect, pull it out and reconnect before adjusting.
 
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