Vintage Synth Repair

Thanks, that's what I figured -- was just looking for possible hidden 
functions.

~GMM

John Karns wrote:
>  
>
> On Sun, Aug 1, 2010 at 6:25 PM, klosmon <klosmon@... 
> <mailto:klosmon%40sbcglobal.net>> wrote:
> >
> >
> > Hola-
> > >I've come across a Prophet 5 rev 2 for servicing which has a Cooper 
> MIDI interface.
> > >This appears to be a simple board that goes between the keyboard 
> and the P5 front panel; has MIDI In and Through (no Out),
> > >and a channel select switch on the front panel. The ROM on the 
> board is labeled "JL Cooper MIDI Keyboard Matrix 1.0".
> > >
> > >Does anyone have any knowledge of / experience with these? It looks 
> like something they may have applied to other synths from that time as 
> well. Operating instructions, hidden functions, whatever?
>
> Sorry, have no experience with the JL Cooper MIDI Keyboard Matrix, but
> since the original / early P5 units pre-dated Midi, its function is no
> doubt to add a midi in & thru to the P5. Its function is probably
> limited to receiving midi data as an input to the P5, and provides a
> midi channel select, so that it will filter out midi data from other
> controllers sending data targeted to other instruments in the midi
> chain.
>
> --
> John
>
>