Edirol UA-20 Owner's Manual page 58

Appendices
Have you selected "Game compatible device" or "Voice modem" as the output
for the audio track?
If game compatible device or voice modem (the actual name will depend on the
computer you are using) is selected for the audio track of your software, the audio track
may not play back. Do not select these devices as the port.
Could the UA-20 have been connected when you started up the computer?
Start up the computer with the UA-20 disconnected, and then connect the UA-20.
Depending on the type of computer you are using, starting up the computer when the
UA-20 is already connected may cause operation to be unstable. In this case, start up
your computer and then connect the UA-20.
Are the faders of the Windows volume control raised
Adjust the faders of the Windows volume control.
For details, refer to your Windows manual or the on-line Windows Help.
If the main volume level of your Macintosh raised?
In System Preferences – Sound, make sure that Output Volume is raised (toward the
right).
Have you specified the audio data output destination in your playback
software?
You need to make settings in your software to select the UA-20 as the destination for the
output of audio data. For details on how to make this setting, refer to the owner's
manual for the software you are using.
Could your computer have entered Standby (Suspend) mode or Sleep mode?
In this case, after your computer wakes up, close all software that had been using the
UA-20, and then connect the UA-20.
If this does not solve the problem, close your software and then restart your computer.
We also recommend that you set your computer so that it does not enter Sleep mode.
A device connected to the input jacks can't be heard
through headphones
Is the headphone volume set appropriately?
Turn the headphone volume clockwise to adjust the volume.
Is the Input monitor switch turned on?
Is the Input select switch set correctly?
58