Puzzler

[Robert Moffatt]

Clark,

Contact Ron Giesbrecht, National service manger for Yamaha Canada.
He's the expert!

rgiesbrecht@yamaha.ca



----- Original Message -----
From: <Clarks11628@AOL.COM>
To: <pianotech@ptg.org>
Sent: Thursday, August 03, 2000 5:52 PM
Subject: Puzzler


> Dear List,
>     I have a puzzler for anyone out there who is familiar with the new
Mark
> III Yamaha Disklavier pianos.  We got a new DGH1BA MkIII in the other day,
> and the first thing we noticed, after I tuned it was that the keys were
> bouncing all over the place upon playback.  After tightening the screws,
and
> bedding the keyframe, doing some minor regulation, everything seemed
pretty
> OK (which most Yamaha pianos seem to come in at least pretty Ok), I
performed
> Soft and Loud pedal measurement.  The answer was, pass, adjust loud pedal.
>     After setting the loud pedal to the specs, it still said to adjust
loud
> pedal.  Then I did Keyboard measurement, and came up with a lot of keys
with
> pass numbers, almost all of which were pedal numbers (18,28,38) in both
pedal
> phases.
>     I went in and adjusted the pedals again today, and when you get the
> bottom measurements to spec, the top doesn't work properly (bad lift,
timing
> is wrong).  When you get the top working as it should, the measurements
are
> way off spec.
>     To top it all off, I noticed a "clicking" sound when keyboard
measurement
> was going on, and I found a solenoid laying across some other solenoids,
way
> out of place.
>     Any ideas out there, all you Yamaha experts?  I need help, and Yamaha
> didn't call me back in time today (although I'm sure they will).
>
> Clark Sprague
> Associate Member
> Detroit
>