Juno 106 service manual - MN 3009 circuits

[StephenGiles]

http://www.hinzen.de/midi/juno-106/manual/juno-serv.pdf

[Mark Hammer]

I have a busted Juno 106 sitting in my basement.  I had to put it there because those damn MN3009s just kept staring at me and taunting me.  Still unable to decide whether to fix the thing or cannibalize it.  Lotsa good stuff in there, and certainly the keyboard could be put to excellent use by any of Ray Wilson's delightful little imaginings.

[Ry]

Cool!  I have a fully functioning Juno-106 (as well as a slightly better sounding Juno 60).  I like them for basic synth sounds, it's great to have a service manual sitting around for reference.

Thanks!

[stm]

The driving circuit to the MN3101 is pretty complex.  5 transistors instead of the usual 2.  Is this intended to have some sort of log/exponential voltage control of the clock?

[birt]

I have a busted Juno 106 sitting in my basement.  I had to put it there because those damn MN3009s just kept staring at me and taunting me.  Still unable to decide whether to fix the thing or cannibalize it.  Lotsa good stuff in there, and certainly the keyboard could be put to excellent use by any of Ray Wilson's delightful little imaginings.

well have you seen how the keyboard works? the keys push small rubber pads on a pcb, just like the buttons on any modern electrical device. if you want to use a keyboard for something else its easier to get one from an old cheap organ. the juno's sound great and you can sell it for a lot more then what an old busted organ would cost you.