Well I"m looking at the 2nd printing of the schematics. If you will notice
on the regulator section of the schematic the +- 15 section is not used, or
populated.
The +- 15 regulation is done on the tempest board itself. There are test
lugs to check those voltages in the analog section.
Kevin
On Sat, Nov 19, 2011 at 3:32 PM, Ian Eure <ieure@mac.com> wrote:
> Hi, I'm new here. I have a Tempest upright and an Asteroids Deluxe
> cabaret. The latter works, while I am debugging the former.
>
> My Tempest has no display (F100/101 are blown) or sound, and I'm trying to
> get it to play blind before attacking the monitor. All the voltages from
> the power supply look good, but I'm having some issues with the
> regulator/audio PCB.
>
> Basically, the schematic says I should have +15/-15 on pins 7 and 10 of
> J10. I don't have any voltage from either, and there are no wires in P10
> for those pins.
>
> Is this normal? That is, did things change from when they printed the
> schematic to when mine was produced? Or do I have both a hacked-up
> regulator _and_ a hacked up wiring harness?
>
> In short, if you have a Tempest, do you have leads on pins 7 and 10 of P10
> and/or voltages on pins 7 and 10 of J10?
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Received on Sat Nov 19 18:25:59 2011
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