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Radio Shack MD-1700 - Troubleshooting; Common Issues and Solutions

Radio Shack MD-1700
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44
Troubleshooting
3D (decimal 61) is sent as the key number,
finally 21 (decimal 33) is sent as velocity.
Pitch Bender
— The keyboard sends and
receives pitch bending signals.
Control Change
— This feature sends data
on various controllers, each having its own
number. For the details of each parameter,
see “MIDI Data” on Page 39.
Program Change
— This feature changes
the preset sounds. Each sound number cor-
responds to a program number between 0
and 127.
System Exclusive
— This feature sends
special signals unique to the keyboard. For
details, see “MIDI Data” on Page 39.
System Real Time
— “Clock” is like a metro-
nome to send the synchronizing signal.
System real time commands send three
kinds of signals
start
tells the keyboard to
start playing from the beginning,
stop
tells all
the synchronized instruments to stop play-
ing, and
continue
is similar to start, but it sig-
nals the music to begin at whatever point it
was last stopped.
All Notes Off
— This feature is a kind of
panic button: it stops the sounds currently
playing. The keyboard only receives this
message.
Active Sensing
— This means the key-
board’s sound turns off in the event the con-
nection cable to
MIDI IN
terminal is
accidentally disconnected.
ˆ
Troubleshooting
Trouble Possible Cause Remedy
No sound, even if keys are
pressed.
The keyboard has turned off
automatically.
Turn on the keyboard.
Volume is turned down. Increase the volume.
Headphones connected. Disconnect headphones.
Power supply problem.
Check the power supply.
Are battery symbols
(+/–) facing correctly?
Are the batteries fresh?
Is the AC or DC adapter connected
properly?
You are pressing too few
accompaniment keys while
MODE
is set to
FINGERED
.
Set
MODE
to
FINGERED
or
CON-
CERT CHORD
.
Press 3 or 4 keys to form a chord
while
MODE
is set to
FINGERED
.
No sound when connected to
an external amplifier.
Volume
is turned down.
Repeatedly press
VOLUME
to
increase the volume.
Defective connection cord. Replace the connection cord.
No sound when receiving and
playing MIDI data.
MIDI cables are not con-
nected properly.
Check the connection.
The key or tuning does not
match when playing along
with another MIDI instrument.
The tuning or transpose
parameter is set to a value
other than
0
or
00
.
Set the
tuning or transpose to
0
or
00
.

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