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Troubleshooting
The driver cannot be installed.
•
Is the USB cable connected correctly?
→
Check the USB cable connection.
→
Disconnect the USB cable, then connect it again.
•
[Windows] Is the USB function enabled on your computer?
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When you connect the S90 to the computer for the first time, if
the “Add New Hardware Wizard” does not appear, the USB
function on the computer may be disabled. Perform the
following steps.
1
Double-click “System” in the Control Panel to open the
System Properties window.
2
Double-click the “Device Manager” tab and make sure that
no “!” or “x” marks appear at “Universal serial bus
controller” or “USB Root Hub.” If you see an “!” or “x”
mark, the USB controller is disabled. For more
information, refer to the owner’s manual of your computer.
•
[Windows] Is any unknown device registered?
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If driver installation fails, the S90 will be marked as an
“Unknown device,” and you will not be able to install the driver.
Delete the “Unknown device” by following the steps below.
1
Double-click “System” in the Control Panel to open the
System Properties window.
2
Double-click the “Device Manager” tab. With the “View
devices by type” check box checked, look for “Other
devices.”
3
If you find “Other devices,” double-click it to extend the
tree to look for “Unknown device.” If one appears, select it
and click the [Remove] button.
4
Remove the USB cable from the S90, and make the
connection again.
5
Install the driver again.
When controlling the S90 from your computer via USB, the
S90 does not operate correctly or no sound is heard.
•
Did you install the driver?
•
Is the USB cable connected correctly?
•
Are the volume settings of the tone generator, playback device, and
application program set to the appropriate levels?
•
Have you selected an appropriate port in the sequence software?
•
Check whether the MIDI IN/OUT setting in the Utility mode
corresponds to the actually used cable (USB or MIDI).
Playback response is delayed.
•
Does your computer satisfy the system requirements?
•
Is any other application or device driver running?
[Macintosh]
→
Turn off virtual memory.
→
Disable AppleTalk.
Cannot suspend or resume the computer correctly.
•
Do not suspend the computer while the MIDI application is
running.
•
If you are using Windows 2000, you may not be able to suspend/
resume normally, depending on the particular environment (USB Host
Controller, etc.). Even so, simply disconnecting and connecting the
USB cable will allow you to use the S90 functions again.
How can I delete or re-install the driver?
[Windows Me/98]
1
When the S90 is recognized correctly, double-click “System” in
the Control Panel to open the System window.
2
Double-click the “Device Manager” tab, select “YAMAHA USB
MIDI Driver” and delete it.
3
Use the MS-DOS prompt or Explorer to delete the following
three files.
n
To delete these files using Explorer, select “Folder Options” from
the Tool (View) menu, and select “Show all files (and folders).”
• \WINDOWS\INF\OTHER\YAMAHAS90.INF
• \WINDOWS\SYSTEM\Xgusb.drv
• \WINDOWS\SYSTEM\Ymidusb.sys
4
Disconnect the USB cable.
5
Restart the computer.
6
Re-install the driver.
[Macintosh]
1
Delete the files in the following locations:
• System Folder | Control Panels | YAMAHA USB MIDI Patch
• System Folder | Extensions | USB YAMAHA MIDI Driver
• System Folder | OMS Folder | YAMAHA USB MIDI OMS Driver
2
Restart the computer.
3
Install the driver and set up OMS.
