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CS80 tuning procedure....

CS80 tuning procedure....

2006-05-04 by Quazimodo

Hi folks,

OK I'm gonna tune her again, it's about time....

I did it a few years ago and at the time I did the 'touching-the
screwdriver' thing to "hear" which board was active.

Since then though, I have heard on here that this can lead to blown
components. I also remember one of you had an LED panel to indicate
the status.

My questions is, without any special gear -(I am using a digital
multimeter with onboard frequency counter for tuning)- how should I
monitor which card/voice is active and not be in danger of blowing
anything please?

Cheers
TOM

Re: [yamahacs80] CS80 tuning procedure....

2006-05-04 by David Rogoff

Quazimodo wrote:
> Hi folks,
>
> OK I'm gonna tune her again, it's about time....
>
> I did it a few years ago and at the time I did the 'touching-the
> screwdriver' thing to "hear" which board was active.
>
> Since then though, I have heard on here that this can lead to blown
> components. I also remember one of you had an LED panel to indicate
> the status.
>
> My questions is, without any special gear -(I am using a digital
> multimeter with onboard frequency counter for tuning)- how should I
> monitor which card/voice is active and not be in danger of blowing
> anything please?
>
Piece of cake! First, use a non-conductive screwdriver/adjustment
tool. They're very cheap. Also, a wrist ground-strap is a good idea
and also very cheap. All you do is put the screwdriver in the trimmer
you want to adjust. Then just turn it back and forth while you hit the
correct key on the keyboard, as instructed in the manual. If the pitch
doesn't change, let go of the key and hit it again. Repeat until
turning the trimmer affects the pitch and then adjust it. One catch:
voice 8 will never sound unless another key is simultaneously pressed,
so to get it you have to hit some other key, then hit/hold the correct
key, then let go of the first key.

Also, a frequency counter doesn't work well for tuning musical
instruments. A strobe or digital guitar/instrument tuner works best. I
use a 20-year-old little Korg that's really fast and easy to use. I'm
able, with just the screwdriver/adjustment tool and the tuner, to fully
tune a CS-80 to digital-like tuning in about an hour. The hardest part
is getting to the trimmers at the top with all the wire bundles in the way.

David


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Re: [yamahacs80] CS80 tuning procedure....

2006-05-05 by laurie

touch the back side of the boards with your finger in behind the 2
foot (blue)trimpot....you will hear a fluctuation in pitch for the card
on the key you are holding down.....forcard m8 in each bank repeat a key
7 times and while holding the 8th note press the 9th to tune(release the
8th while holding 9th to tune 9th note

Quazimodo wrote:

> Hi folks,
>
> OK I'm gonna tune her again, it's about time....
>
> I did it a few years ago and at the time I did the 'touching-the
> screwdriver' thing to "hear" which board was active.
>
> Since then though, I have heard on here that this can lead to blown
> components. I also remember one of you had an LED panel to indicate
> the status.
>
> My questions is, without any special gear -(I am using a digital
> multimeter with onboard frequency counter for tuning)- how should I
> monitor which card/voice is active and not be in danger of blowing
> anything please?
>
> Cheers
> TOM
>
>
>
>
>
> SPONSORED LINKS
>
Music sampler Unit Sampler

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> Service.
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Re: [yamahacs80] CS80 tuning procedure....

2006-05-05 by David Rogoff

Laurie,

What you wrote is what the service manual says. However, as the
original question said, there's an opinion, specifically on Crow's
www.cs80.com website, that says not to do this because of possible ESD
damage.

David

laurie wrote:
Show quoted textHide quoted text
> touch the back side of the boards with your finger in behind the 2
> foot (blue)trimpot....you will hear a fluctuation in pitch for the card
> on the key you are holding down.....forcard m8 in each bank repeat a key
> 7 times and while holding the 8th note press the 9th to tune(release the
> 8th while holding 9th to tune 9th note
>
> Quazimodo wrote:
>
> > Hi folks,
> >
> > OK I'm gonna tune her again, it's about time....
> >
> > I did it a few years ago and at the time I did the 'touching-the
> > screwdriver' thing to "hear" which board was active.
> >
> > Since then though, I have heard on here that this can lead to blown
> > components. I also remember one of you had an LED panel to indicate
> > the status.
> >
> > My questions is, without any special gear -(I am using a digital
> > multimeter with onboard frequency counter for tuning)- how should I
> > monitor which card/voice is active and not be in danger of blowing
> > anything please?
> >
> > Cheers



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No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.392 / Virus Database: 268.5.3/331 - Release Date: 5/3/2006

Re: [yamahacs80] CS80 tuning procedure....

2006-05-05 by Wavecomputer360

I´ve been told that touching the pcbs would probably the most lethal thing
to do; any CMOS components might get fried by static electricity, even if
you´re wearing a grounding bracelet around your wrist.

Stephen

____________________________________________________________________

"Ambition makes you look pretty ugly." (Thom Yorke/Radiohead -- "Paranoid
Android")


Now available: "Tektonik" and "Gronland", two new ambient music albums by
Stephen Parsick.
Each album is limited to 25 copies and will come in a special packing and is
hand-numbered.

It´s out: "doombient.two -- a declaration of war", the new [´ramp] album,
recorded live in 2003.
Limited to 100 copies only so get it while you still can.

For info and audio, please visit the official [´ramp] website at
www.doombient.com


----- Original Message -----
Show quoted textHide quoted text
From: laurie <laurie@...>
To: <yamahacs80@yahoogroups.com>
Sent: Friday, May 05, 2006 2:48 AM
Subject: Re: [yamahacs80] CS80 tuning procedure....


> touch the back side of the boards with your finger in behind the 2
> foot (blue)trimpot....you will hear a fluctuation in pitch for the card
> on the key you are holding down.....forcard m8 in each bank repeat a key
> 7 times and while holding the 8th note press the 9th to tune(release the
> 8th while holding 9th to tune 9th note
>
> Quazimodo wrote:
>
> > Hi folks,
> >
> > OK I'm gonna tune her again, it's about time....
> >
> > I did it a few years ago and at the time I did the 'touching-the
> > screwdriver' thing to "hear" which board was active.
> >
> > Since then though, I have heard on here that this can lead to blown
> > components. I also remember one of you had an LED panel to indicate
> > the status.
> >
> > My questions is, without any special gear -(I am using a digital
> > multimeter with onboard frequency counter for tuning)- how should I
> > monitor which card/voice is active and not be in danger of blowing
> > anything please?
> >
> > Cheers
> > TOM
> >
> >
> >
> >
> >
> > SPONSORED LINKS
> >
> Music sampler Unit Sampler
>
> > -----------------------------------------------------------------------
> > YAHOO! GROUPS LINKS
> >
> > + Visit your group "yamahacs80" on the web.
> >
> > + To unsubscribe from this group, send an email to:
> > yamahacs80-unsubscribe@yahoogroups.com
> >
> > + Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> > Service.
> >
> > -----------------------------------------------------------------------
> >
>
>
> [Non-text portions of this message have been removed]
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

Re: [yamahacs80] CS80 tuning procedure....

2006-05-05 by laurie

maybe harmfull with a screwdriver...but .I have never had a problem
touching the back of the 2 foot pot with my finger.....my body acts as a
resistor in parallel to the actual resister circuit...This is how its
done in the Yamaha service depots....John Brennan of Yamaha (Ottawa)and
Lindsay (edmonton Audio Works) both showed me the procedure...their
reccomendation was to cover the key bed(metal) with a towel so I wouldnt
conduct between the boards and the keybed.......

Wavecomputer360 wrote:

Show quoted textHide quoted text
> I´ve been told that touching the pcbs would probably the most lethal
> thing
> to do; any CMOS components might get fried by static electricity, even
> if
> you´re wearing a grounding bracelet around your wrist.
>
> Stephen
>
> ____________________________________________________________________
>
> "Ambition makes you look pretty ugly." (Thom Yorke/Radiohead --
> "Paranoid
> Android")
>
>
> Now available: "Tektonik" and "Gronland", two new ambient music albums
> by
> Stephen Parsick.
> Each album is limited to 25 copies and will come in a special packing
> and is
> hand-numbered.
>
> It´s out: "doombient.two -- a declaration of war", the new [´ramp]
> album,
> recorded live in 2003.
> Limited to 100 copies only so get it while you still can.
>
> For info and audio, please visit the official [´ramp] website at
> www.doombient.com
>
>
> ----- Original Message -----
> From: laurie <laurie@...>
> To: <yamahacs80@yahoogroups.com>
> Sent: Friday, May 05, 2006 2:48 AM
> Subject: Re: [yamahacs80] CS80 tuning procedure....
>
>
> > touch the back side of the boards with your finger in behind the
> 2
> > foot (blue)trimpot....you will hear a fluctuation in pitch for the
> card
> > on the key you are holding down.....forcard m8 in each bank repeat a
> key
> > 7 times and while holding the 8th note press the 9th to tune(release
> the
> > 8th while holding 9th to tune 9th note
> >
> > Quazimodo wrote:
> >
> > > Hi folks,
> > >
> > > OK I'm gonna tune her again, it's about time....
> > >
> > > I did it a few years ago and at the time I did the 'touching-the
> > > screwdriver' thing to "hear" which board was active.
> > >
> > > Since then though, I have heard on here that this can lead to
> blown
> > > components. I also remember one of you had an LED panel to
> indicate
> > > the status.
> > >
> > > My questions is, without any special gear -(I am using a digital
> > > multimeter with onboard frequency counter for tuning)- how should
> I
> > > monitor which card/voice is active and not be in danger of blowing
>
> > > anything please?
> > >
> > > Cheers
> > > TOM
> > >
> > >
> > >
> > >
> > >
> > > SPONSORED LINKS
> > >
> > Music sampler Unit Sampler
> >
> > >
> -----------------------------------------------------------------------
>
> > > YAHOO! GROUPS LINKS
> > >
> > > + Visit your group "yamahacs80" on the web.
> > >
> > > + To unsubscribe from this group, send an email to:
> > > yamahacs80-unsubscribe@yahoogroups.com
> > >
> > > + Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> > > Service.
> > >
> > >
> -----------------------------------------------------------------------
>
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
> -----------------------------------------------------------------------
> YAHOO! GROUPS LINKS
>
> + Visit your group "yamahacs80" on the web.
>
> + To unsubscribe from this group, send an email to:
> yamahacs80-unsubscribe@yahoogroups.com
>
> + Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service.
>
> -----------------------------------------------------------------------
>


[Non-text portions of this message have been removed]