Puzzler

[Kevin E. Ramsey RPT]

I'm not trained with the Diskclavier, but one of the techs where I work said
that they came out with the Mark 3 before they came out with the service
manual for it. I'm surprised, but get through to Yamaha, and I'm sure
they'll help you out. And if they don't. just don't work on the Mark 111s
until you have that book, and tell 'em so.
-----Original Message-----
From: Clarks11628@AOL.COM <Clarks11628@AOL.COM>
To: pianotech@ptg.org <pianotech@ptg.org>
Date: Thursday, August 03, 2000 5:16 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
>