[sdiy] Jupiter-6 Osc Sync?

cheater cheater cheater00 at gmail.com
Wed Feb 10 12:55:37 CET 2010


You mean, more like a rev 4 than a rev 5.

I have both the rev 3 and rev 4 and they are almost exactly the same.
A different JFET for the summing stage, stuff like that.

D.

On Wed, Feb 10, 2010 at 11:49, David Bulog <d2ba at xtra.co.nz> wrote:
> JP6 is more like a Rev 3 MKS-80 then a Rev 4 MKS-80 BTW
> On 10/02/2010, at 11:26 PM, cheater cheater wrote:
>
>> I seem to remember there was something weird with the MKS80 sync...
>> maybe it was actually RM, or something like that.
>>
>> Wish I could help you further
>>
>> D.
>>
>> On Wed, Feb 10, 2010 at 08:29, Doug Terrebonne <dougt55 at yahoo.com> wrote:
>>>
>>> Hi, I've got a JP-6 here where on 1 voice VCO1<-VCO2 sync does not work.
>>> Sync in the other direction on that voice does work. Can anyone explain how
>>> the JP-6 does osc sync? It does not use the sync onboard the CEM3340 (the
>>> pins are tied to ground) and all the service manual says is "sync is
>>> accomplished by external connections"... The service manual is here -
>>>
>>> http://manuals.fdiskc.com/flat/Roland%20Jupiter-6%20Service%20Manual.pdf
>>>
>>> The voice board schem is on page 16.
>>>
>>> Thanks for any help,
>>> Doug
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>>>
>>
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