Yamaha CS80

Please, would you give me any hint about my questions?
Thx
M
----- Original Message -----
From: "Max Fazio" <faxiomas@...>
To: <yamahacs80@yahoogroups.com>
Sent: Sunday, March 12, 2006 8:58 PM
Subject: [yamahacs80] CS80 restoration problems


> Hi
> A friend of mine in Bologna is restoring a CS80 and, although it is one of
the last produced , it has as obvious some problems so he asked me some
advices. now, since I'm not a tech, I submit these problems to you....
>
> 1. On channel 1 the "Initial Level" slider seems to work with a reversed
polarity...the result is like the IL slider behaves like the Attack Level...
>
> 2. the M-26 voice card has problems only with presets "CLAVICHORD2" and
"GUITAR2": with low velocity the card doesn't  produce sound whilst , with
higher velocity action, the voice is played ; with user presets and panel
sounds the voice card M26 behaves normally.
>
> 3. On the M-28 voice card there is a background noise when the footage (
CH-II )is set at 2' : the Square waveform suffers from this noise when the
PW is set at 50% but the noise is reduced if the PW percentage is increased;
the Sine has the noise but the Sawtooth hasn't it
>
> 4. the A# key on the 3rd octave doesn't respond to velocity
>
> 5. the D1 key behaves strangely : if it's played monophonically it does
respond to velocity and AT, while , if played into a chord, doesn't respond
any more to none of the above.
>
> Can you help me?
> Thx
> Max
>
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> Yahoo! Groups Links
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