• Using the procedure for "Deleting the driver" (p. 240), delete the USB audio device driver
installed in your computer, and then re-install the SD-20 driver as described in "Getting
connected and installing drivers (Windows)" (p. 17). Also check whether there is any
"Unknown device" in "Other devices" or "Universal Serial Bus Controllers." If you find any,
delete them.
•
Is OMS or FreeMIDI installed?
The SD-20 driver cannot be installed unless OMS or FreeMIDI are installed. Please install OMS or
FreeMIDI. (OMS -> p. 45, p. 51 FreeMIDI -> p. 49, p. 56)
SD-20 is not detected when making OMS or FreeMIDI settings
•
Is the SD-20 detected?
Turn the power of the SD-20 off, then on again.
Reconnect the USB cable.
If other USB devices are connected, connect only the SD-20.
It is possible that the Macintosh did not correctly detect and initialize the SD-20. Leave the SD-20's
USB cable connected, and restart your Macintosh. If it is still not detected, shut down your
Macintosh, and then restart it.
The SD-20 will not be detected if it is connected to the USB connector on the Macintosh keyboard.
Please connect the SD-20 to a USB connector on the Macintosh itself.
•
Are you using only OMS?
If you are using OMS, the system will not operate correctly if FreeMIDI is installed. Delete
FreeMIDI-related files from the Extensions folder.
Troubleshooting
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