OldSynths

I have the CS60 docs- I got them from YAMAHA.
You might want to check MANUAL MANOR first though...
http://www.markglinsky.com/ManualManor.html

I would like to see a webpage dedicated to showing pics of the 
calibration procedure. Anyone game?

-Rory McDonald
OLDSYNTHS Moderator

On Apr 14, 2004, at 9:45 AM, Jim Combs wrote:

> Hi all,
>
>  I need to do some basic maintenance on my CS-50 and am looking for a 
> copy of a tech manual or some instructions on the following.
>
>  - Checking and adjusting the power supply DC output.
>  - Getting the overall tuning back into range so I have leeway to 
> adjust up and down
>  - Adjustment or scaling of individual notes or voices
>
>  I have seen the online documentation on the CS-80, but the modules 
> look different enough that I think the CS-50/60 probably have their 
> own specific steps and values.
>
>  Anyone have info that might help?
>
>  Thanks!
>
>  -Jim
>
>
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Thanks Rory.  I have a note into Mark to see if he has the tech 
manual for sale.

-Jim
 www.touchxtone.com

--- In oldsynths@yahoogroups.com, Rory Mc Donald 
<rorymcd@m...> wrote:
> I have the CS60 docs- I got them from YAMAHA.
> You might want to check MANUAL MANOR first though...
> http://www.markglinsky.com/ManualManor.html
> 
> I would like to see a webpage dedicated to showing pics of the 
> calibration procedure. Anyone game?
> 
> -Rory McDonald
> OLDSYNTHS Moderator
> 
> 
> On Apr 14, 2004, at 9:45 AM, Jim Combs wrote:
> 
> > Hi all,
> >
> >  I need to do some basic maintenance on my CS-50 and am 
looking for a 
> > copy of a tech manual or some instructions on the following.
> >
> >  - Checking and adjusting the power supply DC output.
> >  - Getting the overall tuning back into range so I have leeway 
to 
> > adjust up and down
> >  - Adjustment or scaling of individual notes or voices
> >
> >  I have seen the online documentation on the CS-80, but the 
modules 
> > look different enough that I think the CS-50/60 probably have 
their 
> > own specific steps and values.
> >
> >  Anyone have info that might help?
> >
> >  Thanks!
> >
> >  -Jim
> >
> >
> > Yahoo! Groups Sponsor
> >
> > ADVERTISEMENT
> > <122603_LREC_bkup_BR_Ashanti.jpg>
> > <l.gif>
> >
> > Yahoo! Groups Links
> >
> > 	• 	To visit your group on the web, go to:
> > http://groups.yahoo.com/group/oldsynths/
> >  
> > 	• 	 To unsubscribe from this group, send an email to:
> > oldsynths-unsubscribe@yahoogroups.com
> >  
> > 	• 	 Your use of Yahoo! Groups is subject to the Yahoo! Terms 
of 

> > Service.
> >
> >  
> >

Tuning a CS-50 is almost the same as tuning a CS-80.  In fact it is much 
easier (4 cards to adjust vs. 16).  Before adjusting any of the power 
supply trimmers, measure the output voltages to see if they are within 10% 
of the expected values.  If a supply trimmer needs adjusted, try to get 
the output as close to the ideal value (e.g., +8.500V).  I have an image 
of the original CS-50 power supply PC board here:

http://www.oldcrows.net/~oldcrow/synth/yamaha/cs50/CS50_power_supply_layout.gif

  VR1: adjusts the +15V
  VR2: adjusts the -15V
  VR3: adjusts the +8.5V
  VR4: adjusts the -6.5V

  Adjustment of KAS and M boards is the same as on a CS-80.

Crow
http://www.cs80.com/
/**/

On Wed, 14 Apr 2004, Jim Combs wrote:

> Hi all,
> 
> I need to do some basic maintenance on my CS-50 and am looking for a
> copy of a tech manual or some instructions on the following.
> 
> - Checking and adjusting the power supply DC output.
> - Getting the overall tuning back into range so I have leeway to adjust up
> and down
> - Adjustment or scaling of individual notes or voices
> 
> I have seen the online documentation on the CS-80, but the modules look
> different enough that I think the CS-50/60 probably have their own
> specific steps and values.
> 
> Anyone have info that might help?