MX100A pedal adjustment

[Carol Beigel]

The "keep out" screw is only to get UL approval.  Remove it and adjust the 
sustain pedal like you normally would.  However, before you touch the 
sustain pedal, check the soft pedal.

My concern is that you might have done a disservice in adjusting the 
captstans.  It could be that the volume was set on very low and therefore 
the hammers were already half way to the strings and thereby activating the 
dampers traveling back from the strings.  I suspect this was the problem all 
along.  Turn on the Disklavier, play a disk, and turn the volume up.  Watch 
the soft pedal mechanism as you turn the volume from the highest to the 
lowest setting

Sometimes these soft pedal rods have a string that gets caught when the 
volume is turned very low.  You would not have seen that condition without 
removing the bottom board.  If the string is wound tight, the piano is in 
soft mode.  The idea is that there should be plenty of slack in normal 
volume modes.

If you still have trouble, call the great guys at Yamaha tech support at 
1-800-854-1569.  However, they don't answer the phone until morning Pacific 
time!


>From: staytuned@idirect.com (John Lillico, RPT)
>Reply-To: pianotech@ptg.org
>To: pianotech@ptg.org
>Subject: MX100A pedal adjustment
>Date: Wed, 30 Aug 2000 22:46:56 -0400
>
>I have no training in these Disclaviers but noticed the sustain pedal 
>didn't start lifting dampers (manually) until the pedal was about 80% down. 
>I also noticed a screw through the bottom door spring which suggested to me 
>"keep out". Now they complain that the sustain doesn't work too well.
>
>Can I go inside and adjust this as on a regular upright without getting 
>involved with the modern elements?
>
>I'm leaving for the job at 8 a.m. (EDT) so any west coast help would be 
>much appreciated.
>
>John Lillico, RPT
>Oakville, Ontario
>
>

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