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Troubleshooting
Sound from devices connected to the input jack is not heard in the headphones
●
Is the headphone volume set appropriately?
Turn the knob clockwise to adjust the volume.
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Is the rear panel insertion/input jack select switch set appropriately?
Refer to
“Insertion / Input jack select switches”
(p. 16), and set the switch appropriately.
●
If you are using digital input, turn the External clock switch on.
Volume from a device connected to the input jacks is too low
●
Are you using a cable that has a built-in resistor?
Use a cable without a built-in resistor (e.g., Roland PCS series).
●
Is the Input volume raised appropriately?
Turn the knob clockwise to adjust the volume.
The sound of a device connected to the input jack is distorted
If you are inputting sound through the input jacks, use the Input sensitivity knobs of the UA-1000 to lower the
input level.
Noise is heard during audio playback
●
Is a mic or guitar still connected?
If a mic or guitar is connected to the UA-1000, disconnect the mic or guitar, and turn the input sensitivity knob all
the way to the left. Disconnect any audio devices you are not using.
●
Noise is sometimes heard in the line input or mic input.
If a USB-compatible MIDI sound module and the UA-1000 are connected via USB to the same computer, and the
outputs of the MIDI sound module are connected to the line input jacks of the UA-1000, noise from your computer
may be heard via the MIDI sound module from the UA-1000, depending on the computer you are using. If this
occurs, you can either connect the MIDI sound module and the UA-1000 in parallel using a self-powered hub, or
connect the MIDI sound module via its serial or MIDI interface.
●
Are two or more audio devices such as the UA-1000 or a mixer connected to your computer?
Try connecting only a single UA-1000 unit, and check whether the noise disappears. If numerous audio devices
are connected to a computer, noise may occur depending on your system. In such cases, connect only the UA-
1000 to your computer.
●
In some cases, you may also be able to solve this problem by grounding the chassis of your
computer, or the grounding connector of the AC power supply plug of your computer. In
addition, you can check whether any devices that produce a strong magnetic field are located
nearby, such as a television or microwave oven.
●
Also check the troubleshooting item Sound is interrupted during audio playback (p. 48).
UA-1000_e.book 47 ページ ２００３年８月６日 水曜日 午前１１時５２分