Pole Postion question

Mr Do

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Upright I am fixing has 4.92 volts on test point on pcb.

Where do I adjust the +5V?
There are two ar/pcb that has adjustment pots, is that the +5v adjustment?
But if that is the +5V on both, how would they BOTH be adjustedat the same time??

The game works, but sometimes upon turn on, there is garbage on screen. Turn it on and off again and it works.
I think +5V is to low.

Why two AR/pcb's on a upright when it has only one speaker verse a pp cockpit which has like 4 speakers?
 
4.92 should be fine, I test the boards at 5V and then after repair I check them again at .4.75, I have only found one board that wouldn't work down at least to 4.8.
Dick
 
Why two AR/pcb's on a upright when it has only one speaker verse a pp cockpit which has like 4 speakers?
There are actually two speakers, one firing at your head, and one firing at your junk. One ARII for each.
 
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