Troubleshooting - Edirol UM-550 Owner's Manual

Troubleshooting

Be sure to read the Readme_e.txt file found on the UM-550/880 Driver CD-ROM. The Readme_e
file contains any additional information that was not included in this manual.
Windows users
* If you are using a Macintosh, please refer to p. 59.
USB connections cannot be made correctly
Is the UM-550/880 detected?
Unplug the USB cable, and then plug it in again.
It is possible that the computer did not correctly detect or initialize the UM-550/880. Try restarting
Windows with the USB cable left connected to the UM-550/880. If it is still not detected, exit
Windows and turn off the power of your computer. Then turn on the computer once again and
restart Windows.
Can't enter Suspend mode
Is an application that is using the UM-550/880 still running?
Exit the application that is using the UM-550/880.
If a sequencer or other application is using the UM-550/880, the computer will not enter suspend
mode.
What is "Suspend"?
This is a function found on many computers that temporarily shuts down some internal circuitry
and peripheral devices in order to save power while leaving the computer powered-on.
The UM-550/880 does not recover correctly from Suspend mode
While suspended, was the UM-550/880 left connected via USB cable?
Disconnect the USB cable and then re-connect it.
On some computers, the UM-550/880 may not recover when Windows recovers from suspend
mode. If this occurs, disconnect the USB cable connecting the UM-550/880 from the USB connector,
and then re-connect it.
Windows hangs up (freezes)
When recovering from suspend mode, Windows may hang up.
Disconnect the UM-550/880's USB cable before entering suspend mode. On some computers,
Windows may hang up (freeze) when recovering from suspend mode. If this occurs, disconnect the
USB cable connected to the UM-550/880 before you enter suspend mode.
When you want to use the UM-550/880 once again, make sure that the computer has recovered
correctly from suspend mode, and then connect the USB cable to the UM-550/880.
* If your computer has a switch for activating Suspend mode, disconnect the USB cable from the UM-550/880
before you press that switch.
* For some notebook computers, closing the cover (display) of the computer automatically activates Suspend
mode, so disconnect the USB cable from the UM-880 before closing the cover.
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