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Troubleshooting
Cannot select or use the device
Confirm that the is connected to the
computer correctly.
Quit all the software that is using the
,
and disconnect and reconnect the USB cable
connected to the
.
• Reinstall the driver.
Connect the
directly to a USB port on the
computer. Do not connect it to a USB hub.
Set OPERATION MODE to AUDIO INTERFACE.
(
P. 8)
Playback sound cannot be heard or is quiet
Check the speaker connections and volume
settings on the speakers.
Adjust the OUTPUT and PHONES volume
controls.
• Conrm that the Sound setting of the computer
that you are using is set to "ZOOM U-44".
• Adjust the DIRECT MONITOR knob.
If no sound can be heard or the volume is low
from the PHONES/LINE OUT 2 outputs, adjust
the BALANCE knob.
Recorded audio is too loud, too quiet or silent
• Adjust the input gain of the .
When using a condenser mic, turn phantom
power on.
Confirm that the Sound setting of the
computer that you are using is set to "ZOOM
U-44".
The sound of the device connected to the
input jack is distorted
Conrm that the level indicators are not lighting
red. If they are, lower the input levels.
Sound skips during playback or recording
If you can adjust the audio buffer size of the
software that you are using, increase the buffer
size.
Turn the automatic sleep function and other
computer power saving settings OFF.
Connect the directly to a USB port on the
computer. Do not connect it to a USB hub.
Cannot play or record
Conrm that the Sound setting of the computer
that you are using is set to "ZOOM U-44".
Confirm that
is set for input and output
in the software you are using.
Confirm that
is connected to the
computer correctly.
Quit all software that is using the
, then
disconnect and reconnect the
’s USB
cable.
Cannot use with an iOS device
Set OPERATION MODE to AUDIO INTERFACE.
(
P. 8)
Confirm that the batteries are loaded or the
external power supply is connected correctly.
(
P. 7)
Set the POWER switch to BATTERY/DC IN to
turn the power on.
Sound skips during digital input or output
Confirm that the device used for audio clock
synchronization is connected correctly.
If the
is the master, confirm that audio
clock is synchronized on the connected device.
If the
is a slave, conrm that the correct
clock source and sampling rate are selected
and that the SYNC indicator is lit.
Cannot use in standalone AD/DA mode
Set the OPERATION MODE to STAND ALONE
and select the correct clock source before
turning the power on.
Troubleshooting
25


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