Edirol UA-1X Mode D'emploi page 112

Troubleshooting
• Does your computer or USB hub have sufficient power supply capacity?
The UA-1X cannot be connected if insufficient power is supplied to it. Check
whether one of the following cases apply.
If you are using the UA-1X with a notebook computer that is running on its
battery, operation may be unreliable with some models of computer. If this is
the case, connect the AC adaptor to your notebook computer.
The power conservation mode of your computer may limit the power that is
supplied to USB. Check the settings of your computer.
In some cases, the UA-1X cannot be used with a bus-powered hub (a hub that
does not contain a power supply). Please use a self-powered hub (a hub that
contains a power supply).
• Does your computer meet the USB specifications?
If you are using a computer that does not meet the USB specifications (such as a
homemade computer), operation may be unstable. In such cases, you may be able
to solve the problem by connecting a USB hub that contains a power supply.
• Is "Unknown Device" displayed for "Other devices" or "Universal Serial
Bus controllers"?
Use the following procedure to delete "Unknown Device" from "Other
devices" (Universal serial bus controller), and re-start your computer.
1.
In the Windows Control Panel, double-click System to open the System
Properties dialog box. The System Properties dialog box will appear.
2.
Click the Device Manager tab.
3.
Double-click Other devices (Universal Serial Bus controllers) to see the list
of devices.
4.
From the list, select the unknown device and click Delete.
* In order to check whether or not the "Unknown Device" is the UA-1X,
5.
In the Confirm Device Removal dialog box, click [OK].
6.
Verify that "Other device" or "Unknown device" is not displayed in the
list, and click [Close] to close the dialog box.
The "Add New Hardware Wizard" dialog box appears even
though you installed the drivers
If your computer or USB hub has two or more USB connectors, connecting the
UA-1X to a USB connector to which the UA-1X has never before been connected
may cause the Add New Hardware Wizard dialog box will appear even though
the drivers have already been installed.
Install the drivers once again as described in Connections and Driver
Installation (Windows) (p. 13). This is not a malfunction.
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disconnect the USB cable of the UA-1X, and verify that "Unknown Device"
has disappeared. Then connect the UA-1X once again, and delete "Unknown
Device."