Troubleshooting - Roland Edirol UM-1X Mode D'emploi

Troubleshooting

* Please read the "README_E.TXT" file in the UM-1X Driver CD-
ROM. You can get any additional information not written in the
owner's manual from the "README_E.TXT" file.
Windows users → P.32
Macintosh users → P.35
Windows Users
Case 1: USB connections cannot be made correctly
◆ Has the UM-1X been recognized?
Disconnect the USB cables, and then re-connect them.
It is possible that the computer has failed to recognize or
initialize the UM-1X. Either disconnect and then reconnect
the USB cable, or restart Windows with the UM-1X left
connected. If connection still does not occur, exit Windows,
and turn off the power of your computer. Then turn on the
power of your computer and start Windows.
◆ Are your computer or USB hub (*) supplying sufficient
current?
If insufficient current is being supplied to the UM-1X,
connection is not possible.
• Use a USB hub which contains its own power supply.
• The power conservation mode settings of your computer
may be limiting the current supplied to the USB, so check
these settings.
What is USB hub?
A "USB hub" is a device that expands the number of USB
connectors. Broadly speaking, there are two types of
USB hubs.
Self-powered hubs (USB hubs containing a power
supply): The USB hub itself has an AC adapter, which
supplies power (normally 500 mA) to the added USB
connectors.
Bus-powered hubs (USB hubs not containing a
power supply): The hub does not contain a power
supply. The power supply of the connected computer is
re-distributed to the added USB connectors.
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For details on the electrical
current that can be supplied by
your computer or USB hub
refer to the owner's manual for
your equipment. If you have
questions, please contact the
manufacturer or dealer for
your computer or USB hub.
The UM-1X cannot be used
with a hub that contains no
power supply.