Roland SD-50 用户手册
90
Troubleshooting
• Could there be system exclusive data at the locations where
the playback lags?
Try changing the location of the system exclusive data. Since
system exclusive messages involve a large amount of data,
they can place a significant processing load on the sequencer
or sound module.
Try changing the location of the data, or if possible, replace
the system exclusive data with a control change.
Try changing the location of the system exclusive data. Since
system exclusive messages involve a large amount of data,
they can place a significant processing load on the sequencer
or sound module.
Try changing the location of the data, or if possible, replace
the system exclusive data with a control change.
• Could there be a large amount of control change data (such
as aftertouch) at the locations where the playback lags?
Try changing the location of the data. If you don’t need the
data, delete it.
If the keyboard you use for recording is transmitting
aftertouch messages, a large amount of aftertouch data may
be recorded without your noticing.
This large amount of data can place an excessive processing
load on the sequencer or sound module.
Try changing the location of the data. If you don’t need the
data, delete it.
If the keyboard you use for recording is transmitting
aftertouch messages, a large amount of aftertouch data may
be recorded without your noticing.
This large amount of data can place an excessive processing
load on the sequencer or sound module.
You’ve connected an external sequencer or MIDI
keyboard to the MIDI IN connector and are
attempting to play the SD-50’s sounds, but you
don’t hear anything
keyboard to the MIDI IN connector and are
attempting to play the SD-50’s sounds, but you
don’t hear anything
Check the following points.
• Make sure that the external MIDI device’s MIDI transmit
channel matches the SD-50’s MIDI receive channel.
• Could the SD-50 be connected via USB to your computer?
If you’ve connected the SD-50 to a computer and are trying
to use an external device to play the SD-50’s sound
generator, you should switch on your software’s “MIDI Thru”
setting.
to use an external device to play the SD-50’s sound
generator, you should switch on your software’s “MIDI Thru”
setting.
The bend range is set to the maximum, but the
pitch does not rise all the way when pitch bend
messages are received via MIDI
pitch does not rise all the way when pitch bend
messages are received via MIDI
The bend range can be set in the range of 0–24, but
depending on the wave that’s used, there are cases in which
the pitch will not rise all the way; i.e., the pitch might stop
rising at a certain pitch.
depending on the wave that’s used, there are cases in which
the pitch will not rise all the way; i.e., the pitch might stop
rising at a certain pitch.
Sounds are guaranteed to rise through a bend range setting
of 12, but please be aware that bend range settings greater
than this are not guaranteed to work.
of 12, but please be aware that bend range settings greater
than this are not guaranteed to work.
No sound (or insufficient volume) from a device
connected to MIC/GUITAR IN or LINE IN
connected to MIC/GUITAR IN or LINE IN
Check the following points.
• Are the audio cables connected correctly?
Check the connections.
• Could an audio cable be broken?
• Could you be using a connection cable that contains a
resistor?
Use a connection cable that does not contain a resistor.
Use a connection cable that does not contain a resistor.
• Could the [SENS] knob be set to “MIN”?
Adjust the level appropriately.
• Is the [SETTING] switch at the appropriate position?
Set the [SETTING] switch as appropriate for the device that’s
connected.
connected.
No sound from the microphone
• Could you have connected a condenser microphone?
If you’re using a condenser microphone, you’ll need to supply
phantom power to it.
phantom power to it.
Set the [SETTING] switch to “DC 48 V 10 mA” (p. 56).
• Could the microphone cable be broken?
Problems with External Input
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