Discussion about the Korg PolySix synthesizer

CN05-7 should change when you change the cutoff on the front panel.
CN05-11 should change when you change the resonance on the front panel.

One thing that got me was that the numbering on the two ends of that cable
are different. Pin 5 at the KLM367 end does not hook to pin 5 at the 366 end.
Very strange. The numbers in the cal apply to the 366 end I think.

Bob


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On Fri, 7/15/16, jw_dewdney@yahoo.com [PolySix] <PolySix@yahoogroups.com> wrote:

Subject: Re: [PolySix] VCF RESONANCE ADJUSTMENT QUESTION [1 Attachment]
To: PolySix@yahoogroups.com
Date: Friday, July 15, 2016, 10:55 PM


weird...! I'm getting NO CHANGE from adjusting
the cutoff knob at all. I DO get change when rotating the
RES knob (front panel) clockwise... the lowest value i get
off the test point indicated (presumably CN05-7) is 113-114
mv and it goes all the way up to 10v. But cutoff... no.

is it possible i have the
wrong test point? or the sign of something deeper maybe?

did you see the graphic i posted - showing where i'm monitoring from Bob...? just wondering if it's right..

OOPS! never mine... i was probing the wrong connector - things can look a bit different on the actual board vs the diagram... for some reason i was visually referring to the pair of test points BELOW the connector they are adjacent to - not above - as i should have been doing. So now i got a healthy range of  -5 or 7v at the counterclockwise end up to a few volts above (sorry I didnt' memorize exact numbers) so I have access to 'near' zero at any rate - i'm using -20mv which is about as close as i can get... thanks for your help and sorry to trouble you with an erroneous question