Roland Edirol UA-25 Owner's Manual page 62

Troubleshooting
Depending on the virtual memory setting or network-related settings, noise
may occur.
Please make the following settings before use.
• [Mac OS 9] In Chooser of the Apple menu, set AppleTalk to "Inactive."
(This setting is not changed as a result of turning off AppleTalk, as requested
by OMS when sequencer software is started up. You must change the setting
yourself using the "Chooser.")
• [Mac OS 9] In the "Memory" Control Panel, set Virtual Memory to "Off."
• Depending on the way in which you connect to the Internet, use the UA-25
with the following settings.
If you connect to the Internet via a LAN cable
Use while the LAN cable is connected.
If you connect to the Internet via the internal modem port, or are not
connected to the Internet
In the "TCP/IP" Control Panel, set "Connect via" to "PPP."
After you have made the settings, restart your Macintosh.
* Do not use software that accesses the network (such as a Web browser) at the same time
that you are using sequencer software or audio editing software.
Playback/recording stops midway, and subsequent playback/recording is
not possible
While you were using the UA-25, could your computer have performed a task
with a heavy processing load, such as accessing a CD-ROM drive or network?
If a heavy processing load occurs while the UA-25 is being used, it may not work
correctly. In this case, stop playback/recording, and then start playback/recording
once again. If you are still unable to play/record correctly, close all software that had
been using the UA-25, and re-connect the UA-25.
Digitally recorded sound has distortion, the wrong pitch, or contains noise
Is the sample rate setting in your software the same as the sample rate of the
digital device connected to the digital input connector?
Set your software and the UA-25 to the same sample rate.
If you change the UA-25's sample rate, you must disconnect the USB cable that connects
the UA-25 to your computer, and then re-connect the USB cable in order for the new
setting to take effect.
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