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DR-770
TROUBLESHOOTING
q No sound is produced.
possible causes
The volume is set to minimum.
The level of the key-pads is set to zero.
The selected Rhythm Pattern or Song contains on data.
w Sound breaks.
possible causes
More than 14 voices are being played simultaneously.
Assign Type for the key-pads is not properly set.
e Sound is strange.
possible causes
The settings for the key-pads are inappropriate.
r The Roll/Flam effect is not produced.
possible causes
The Flam Interval is set to zero.
The settings for the Flam Ratio are inappropriate.
t Playback does not begin when [START] button is pressed.
possible causes
The Sync Mode is set to MIDI.
The selected Rhythm Pattern or Song contains no data.
y Songs automatically play one after another.
possible causes
The song chain function is ON.
u The tempo changes when a song starts playing.
possible causes
An internal tempo is being set.
i The DR-770 cannot be controlled by an external MIDI
device.
An external MIDI device cannot be controlled by the DR-
770.
possible causes
The MIDI channels of the DR-770 and the external MIDI
device do not match.
Note numbers of the DR-770 and the external MIDI device do
not correspond.
o When the DR-770 is played by performance data from a
sequencer, the song on the DR-770 starts together.
possible causes
The Sync Mode is set to MIDI sync.
!0 The metronome does not sound.
possible causes
The level of the metronome is set to zero.
!1 Program Change messages cannot be transmitted or
received.
possible causes
"4PRG' in the MIDI Mode is set to OFF.
!2 The volume does not change when MIDI Volume messages
are received.
possible causes
"5RxVOL" in the MIDI mode is set to OFF.
!3 The volume does not change when MIDI Expression
messages are received.
possible causes
"6RxEXPR" in the MIDI mode is set to OFF.
!4 The DR-770 cannot receive Exclusive messages.
possible causes
"7RxEXC" in the MIDI mode is set to OFF.
MIDI channels are not set to the same number.
Feb. 1999
11
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