Discussion about the Korg PolySix synthesizer

Is that a typo (34 vs 24)?

IC26 pin 5 should go to IC24 pin 5.

jed

On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 <swamp.gigs@googlemail.com>wrote:

> **
>
>
> Hi Peter,
>
> I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin 11
> , however doing so knocked out the Bank A thru to Write switches and when
> the I change patch switches, the sound played doesn't.
>
> Any pointers to where to look ?
>
> Thanks
>
> Tone
>
>
> --- In PolySix@yahoogroups.com, Peter M�rck <peterm@...> wrote:
> >
> > Hi,
> >
> > Regarding IC26 pin 5 --> IC34 pin 5:
> >
> > Yes, they should be connected to eachother.
> > But more importantly, do any of them have contact with pin 11 of the
> 8048 (IC22) ?
> > IC26 and IC34 are latches, controlled by pin 11 of the 8048.
> > The fact that IC26 and IC34 have pins 5 connected to eachother doesn't
> necessarily mean any of them will work, unless they in turn are connected
> to the 8048 pin 11.
> > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is
> what you need.
> >
> > BR,
> > Peter
> >
> >
> >
> > ----- Original Message -----
> > From: tonezone020
> > To: PolySix@yahoogroups.com
> > Sent: Tuesday, July 24, 2012 11:59 AM
> > Subject: [PolySix] Re: Polysix contact strip
> >
> >
> >
> > Erm,
> >
> > Correction - that should be IC24 p2, 1, 11, 10 that is connected to IC32
> p2, 1, 17, 16
> >
> > Cheers,
> >
> > Tony
> >
> > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote:
> > >
> > > Hi Don and Peter,
> > >
> > > Your messages have been very helpful consequently I've discovered
> anomalies elsewhere...
> > >
> > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ?
> > >
> > > IC26 to IC32 connections are all fine.
> > >
> > > Also I think there's a mistake in the schematics. Rather than IC34
> connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to
> IC32 p2, 1, 17, 16
> > >
> > > Regards,
> > >
> > > Tony
> > >
> > >
> > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote:
> > > >
> > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4.
> Pin 4
> > > > really does go to pin 12 on the 8048. I just checked a clone board
> and an
> > > > old original KLM-367. They are the same.
> > > >
> > > > Don B.
> > > >
> > > >
> > > >
> > > > _____
> > > >
> > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On
> Behalf Of
> > > > Peter M�rck
> > > > Sent: Monday, July 23, 2012 8:25 PM
> > > > To: PolySix@yahoogroups.com
> > > > Subject: Re: [PolySix] Re: Polysix contact strip
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > You must be looking at the board layout drawing.
> > > > The schematics are different and have no "layers". They just show
> how it's
> > > > connected without actual physical constraints.
> > > >
> > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V
> :)
> > > >
> > > > By the way,
> > > > I assume there's an error in the schematics indicating pin 4 tied to
> pin12
> > > > of the 8048, as it's also tied to +5V.
> > > > Either that's pin 5 instead, or vice versa.
> > > >
> > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND
> gates has
> > > > one of its inputs tied to +5V so whatever appeard on the other input
> will
> > > > also appear on the output of that gate.
> > > >
> > > > The traces under IC31 are usually attacked by the battery acid
> though and it
> > > > is good if you do continuity testing around that area.
> > > >
> > > > BR,
> > > > Peter
> > > >
> > > > ----- Original Message -----
> > > > From: tonezone020
> > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> > > > Sent: Tuesday, July 24, 2012 1:45 AM
> > > > Subject: [PolySix] Re: Polysix contact strip
> > > >
> > > > Hi,
> > > >
> > > > Looking at the schematics it's hard to tell - it doesn't seem like
> there is
> > > > one for the underside of the board ...
> > > >
> > > > Regards,
> > > >
> > > > Tony
> > > >
> > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> ,
> Peter
> > > > M�rck <peterm@> wrote:
> > > > >
> > > > > Just compare with the schematics?
> > > > >
> > > > > BR,
> > > > > Peter
> > > > >
> > > > > ----- Original Message -----
> > > > > From: tonezone020
> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> > > > > Sent: Tuesday, July 24, 2012 12:52 AM
> > > > > Subject: [PolySix] Re: Polysix contact strip
> > > > >
> > > > >
> > > > >
> > > > > Hi,
> > > > >
> > > > > Thanks for your message.
> > > > >
> > > > > I managed to sort the strips out - they had stretched, but with a
> bit of
> > > > coaxing the keys are now working.
> > > > >
> > > > > Been slowly trying to fix the battery leak problem with a tiny bit
> of
> > > > success and Old Crow's advice from his site.
> > > > >
> > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you
> know if
> > > > this should be so? There seems to be a copper trace on the underneath
> > > > circuitry. It also appears to be the same for IC30...
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Tony
> > > > >
> > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> ,
> > > > bastebraak <bastebraak@> wrote:
> > > > > >
> > > > > >
> > > > > >
> > > > > > Is the old one damaged or just not working well. I fixed the
> contacts on
> > > > my polysix with a paste i ordered online.
> > > > > >
> > > > > >
> > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef:
> > > > > > Hi All,
> > > > > >
> > > > > > Does anyone know where I can get a couple of 6 bubble contact
> strips or
> > > > alternatives for my synth, preferably in the Uk ?
> > > > > >
> > > > > > Many thanks in advance,
> > > > > >
> > > > > > Tony
> > > > > >
> > > > > >
> > > > > >
> > > > > > ------------------------------------
> > > > > >
> > > > > > Yahoo! Groups Links
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > [Non-text portions of this message have been removed]
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > [Non-text portions of this message have been removed]
> > > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > >
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>


[Non-text portions of this message have been removed]