Yamaha CS80

VR1 has something to do with the global tuning i guess, i just wonder 
why it does not affect the Volatge on pin13 IC2- as it is described 
in the tuning manual. 

Since i am an absolute beginner in tuning a cs-80 i just follow the 
instructions, i have no clue what is important and what can be 
skipped.

Actually my particular CS-80 is from switzerland, it belonged to a 
collector who had an enormous collection of vintage synths (bought 
also 3 racks of system 100m there)in a dusty warehouse. Shame on me, 
this was in 2001 already and I did not find the time to take much 
care of this CS-80 yet...I have just too much other synths which 
needed service and the cs-80 seems to be a true masterpiece in terms 
of maintenance...



--- In yamahacs80@yahoogroups.com, rj krohn <r_j_d_2.phila@...> wrote:
>
> ive never tuned one via DVM. why dont you tune it via the audio 
output? does VR1 affect output pitch? sure you've got the right 
voice? sorry if im oversimplifying something about your situation....
> 
> oh, and as cs-80 nerds, im sure we all would be intrigued by the 
instruments back-(and fore-) story.
> 
> 
> --- On Sat, 8/9/08, willgregori <will.gregory@...> wrote:
> From: willgregori <will.gregory@...>
> Subject: [yamahacs80] Expert question- Tuning procedure - stuck at 
step 2
> To: yamahacs80@yahoogroups.com
> Date: Saturday, August 9, 2008, 12:49 PM
> 
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>             Dear CS-80 friends,
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> 
> 
> i am currently restoring a CS-80 which collected dust for some 10+ 
> 
> years in a warehouse. Fortunately everything seems to work so far, 
but 
> 
> of course the tuning is a bit off.
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> 
> 
> When starting the tuning procedure i cannot go beyond step 2. 
According 
> 
> to the manual Value at pin 13 of IC2 KAS board should be set to 
125mV. 
> 
> Mine stays always at 135mV- no matter how i turn the corresponding 
VR1 
> 
> pot. VR1 pot itself is ok though.
> 
> 
> 
> Anybody has a hint?
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> 
> 
> Thanks, Gregor
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