Yamaha disklavier MX-100A, Service Manual

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Trans/Beat
When you want to transpose (change) the key
of a piece of music for playback, press this button
in stop mode, during playback or playback pause,
making sure that the button's indicator lights up.
You can then transpose the music with the + / -
buttons . The transposition range is from two
octaves down to two octaves up. It is usually set
to "normal".
In addition, this button can be used to set the
metronome time when the metronome function is
on.
- / + buttons
These are used for various adjustments and
settings such as volume, tempo or transposition.
Pressing the " - " button decreases the respective
value, pressing " + " increases it. With both
buttons, keeping them depressed changes the
value continuously while pressing them shortly
changes the value in single steps.
Metronome button
The Disklavier has a metronome function which
allows you to record music while listening to a
metronome beat. It is also possible to use the
metronome function when not recording.
(However, the metronome cannot be used during
playback.)
When you wish to use the metronome function,
press this button.
Part Cancel buttons
It is possible to cancel either the left-hand or
right-hand part by pressing the corresponding Part
Cancel button when playing back music recorded
separately for the left and right hand. In other
words, pressing the button "L" causes only the
sound of the keys played by the right hand to be
heard, while pressing "R" means that you will hear
only the part for the left hand.
MIDI button
This button is only needed when MIDI signals are
being exchanged with other connected MIDI
equipment. Pressing this button enters MIDI
set-up mode in which the conditions for MIDI
communication are established.
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