Discussion about the Korg PolySix synthesizer

The signals at pins 4 and 10 should both be nice low or high level digital 
signals.   They are both logical combinations of P16 and P23, but are different
signals, so only one would be low at a time, to enable either IC18 or 19.

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On Tue, 8/23/16, 7zlwncpbis4x22jwvkd4oc5hzu2njcsjeup42is6@yahoo.com [PolySix] <PolySix@yahoogroups.com> wrote:

 Subject: [PolySix] Re: Trying to Restore a P6.
 To: PolySix@yahoogroups.com
 Date: Tuesday, August 23, 2016, 10:39 PM
 
 
  
 
 
 
   
 
 
     
       
       
       After looking at Bob's files, and checking
 P20-22, I find that almost everything seems to be in
 order.However, P23 is fine until it enters IC23,
 but when it exits via pins 4 and 10, I get two differing
 waveforms. One looks much like Bob's example of the P23
 trace, basically a square wave, but the other is not the
 same. I understand that the original P23 wave is
 being modulated by the wave coming from P16, but
 shouldn't the outputs on 4 and 10 look the
 same?    I can see the clock clearly at TP4,
 and as mentioned above, can see the pattern change on TP2 as
 I move front panel controls.   Any tips, clues,
 or suggestions are
 appreciated. Thanks.