Yamaha D-85 - Technical Specifications; Keyboard and Tone Lever Specifications; Effect and Rhythm Section Details; Amplification and Electrical Data

“Trouble”
Cause
Remedy -
Auto Bass/Chord function does not work even when
SINGLE FINGER CHORD or FINGERED CORD
button is set to ON.
$
There is no Auto Bass/Chord sound unless the lower key-
board rhythmic chord and pedal keyboard tone levers
have been set. When the auto rhythm function is not
made operative, a sustaining sound without the rhythm
superimposed is produced.
Make absolutely sure that the lower keyboard rhythmic
chord and pedal keyboard tone levers are ON, and that
the auto rhythm function is set to ON.
There is no change in the musical intervals even if the high
note key on the lower keyboard or the low note key is
depressed and held in the single finger chord mode.
Special preset tone colors are not heard when the Auto
Bass/Chord function is used even when the special preset
function is moved to the lower keyboard.
A chord, different from that which should have been
produced when the FINGER CHORD and MEMORY
buttons were depressed in the Auto Bass/Chord mode,
is obtained.
The
Electone
Organ
is
designed
to
deliver
the
prescribed
sound
in
1
octave
in
the
single
finger
chord
mode,
If
the
pitch
na
name
is
the
same,
a
chord
will
be
struck
in
the
same
musical
interval
no
matter
which
key
on
the
lower
keyboard
is
depressed and held.
The Electone Organ is designed to deliver the tone colors of the tone levers on the lower keyboard rhythmic chords
and custom voice sound when the Auto Bass/Chord function is used.
When changing the chord, you may have momentarily
touched an unrelated key and the Electone Organ acted
on the command promptly.
(1) Follow the chord change procedure properly.
(2) Set the MEMORY button to OFF.
The sound from the lower keyboard is continuous and
will not stop.
(1) The MEMORY button is set to ON, with the
Auto Bass/Chord CONSTANT button at ON.
(2) The auto rhythm is superimposed and the
MEMORY button is set to ON.
Set the Auto Bass/Chord's MEMORY button to OFF.
“Trouble” in the actual instrument
The sound appears broken (it resonates or vibrates).
Since the Electone Organ produces a sustained sound,
there is often resonance in the surrounding cupboards,
window panes and other objects.
(1) Turn down the sound volume.
(2) Remove the resonating objects.
The pitch feels high with the pedal keyboard and low
with the upper keyboard's treble section,
This is often felt particularly on comparison with a piano. However, the overtone construction of a piano is complex
(especially in the treble and bass)-it is not possible to form melodies with the actual sounds but they are formed when
the overtones are heard. With the Electone Organ, the formation of melodies is the exact reverse and so that piano and
Electone Organ do differ intrinsically in this respect.