Roland Edirol UM-1X Mode D'emploi page 33

Case 2: Cannot install the UM-1X driver
◆ Could the UM-1X's ADVANCED DRIVER switch be OFF?
Turn the UM-1X's ADVANCED DRIVER switch ON, restart
Windows, and reinstall the driver.
Case 3: Cannot shift to Standby (Suspend)
◆ Is an application which uses the UM-1X running?
Exit the application which is using the UM-1X.
The computer cannot shift to Standby (Suspend) mode if an
application such as a sequencer is using the UM-1X.
What is Standby (Suspend)?
This is a function which minimizes power
consumption by shutting down the internal
circuitry of the computer and the peripheral
devices while the power remains supplied to the
computer.
Case 4: The UM-1X does not resume correctly from
standby (suspend) state
◆ Could the UM-1X have remained connected via USB
while the computer was in standby (suspend) state?
Disconnect the USB cable, and then re-connect it.
On some computers when Windows resumes from the
suspended state, the UM-1X may fail to resume. In this case,
disconnect the USB cable that connects the UM-1X to the
computer, then reconnect it.
Case 5: When resuming from standby (suspend)
state, Windows hangs up (freezes)
Disconnect the USB cable that connects the UM-1X to the
computer before you put your computer in standby
(suspend) mode.
On some computers when Windows resumes from the
suspended state, it may hang up (freeze). In this case,
disconnect the UM-1X's USB cable before you put your
computer in standby mode.
When you want to use the UM-1X again, verify that your
computer has recovered successfully from standby (suspend)
mode, and then connect the UM-1X's USB cable.
Troubleshooting
When a USB device is connected
to a computer, the USB device
tells the computer how much
electrical current it uses. If this
value exceeds the current that
the computer is able to provide
(maximum 500 mA), the device
cannot be connected. The UM-
1X will request 70 mA of current
when it is connected to a
computer. Most computers or
self-powered USB hubs will
have no problem with this
current capacity. If you are
using a dual-mode USB hub
(self-powered / bus-powered),
be sure to connect its power
supply (AC adapter etc.) and
use it as a self-powered USB
hub.
If your computer has a switch
that puts it into standby
(suspend) mode, disconnect
the UM-1X's USB cable from
the computer before you press
that switch.
If you are using a notebook
computer, it may, depending
on its settings, go into standby
(suspend) mode when you
close the lid (the LCD screen),
so disconnect the UM-1X's
USB cable from the computer
before you close the lid.
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