Vintage Synth Repair

Reset on the Jupiter-6

I believe it goes like this: The Reset voltage coming directly from the
Power Supply is indeed a fixed voltage. It just takes a little bit of time
to ramp up and then triggers the actual reset circuitry. The reason for
this is to allow the power supply (notably the +5V digital) to stabilize
before the computer is activated.

So what you need to do is to measure the reset directly at the processor.
This would be pin 9 at the processor; and here it should indeed be a short
+5V "spike" (more like 80ms length).


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