how do I test each pot / slider for defect?

Forum for JP-8000/8080 synthesizers from 1990's
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busssy2333
Posts: 9
Joined: 22:03, 5 October 2016

how do I test each pot / slider for defect?

Post by busssy2333 »

I brought one of my JPs to a tech and he did an onboard test the JP has that shows if there's a problem with any of the knobs / sliders. I think it was something more than I know you can hold Shift and turn a knob and it should show on the screen something like 0 to 127 but I don't think he sat there and like slowly turned each knob and counted to make sure it read all 0 -127. I think there's something you can do that an * would pop up or something? I just want to test a used JP I bought.
busssy2333
Posts: 9
Joined: 22:03, 5 October 2016

Re: how do I test each pot / slider for defect?

Post by busssy2333 »

In case no one replies, I found you can just google the service manual and find a pdf and it might be in there. also found on youtube a video called JP-8000 Diagnostic Test / Calibration (Run after battery replacement.)
https://www.youtube.com/watch?v=1NeC_9sLqvY

I should be able to figure it out from here on
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scottrod
Posts: 106
Joined: 23:46, 4 May 2012
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Re: how do I test each pot / slider for defect?

Post by scottrod »

Where are you located on the planet?
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