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User’s Manual 6-13
NB500/NB505/NB520/NB525/NB550D/NB555D Series
Sound system
In addition to the information in this section, please also refer to the
documentation supplied with your audio device.
External monitor
Please also refer to Chapter 3, Operating Basics, and to the documentation
supplied with your monitor for further information.
The "USB Wakeup
function" does not
work.
When Sleep and Charge function is enabled, the
"USB WakeUp" function does not work for ports that
support the Sleep and Charge function.
In that case, use an USB port that does not have
the USB Sleep and Charge function-compatible
icon ( ) or change to disable Sleep and Charge
function.
Problem Procedure
Problem Procedure
No sound is heard Adjust the volume.
To increase the volume click the volume up button,
and to decrease it click the volume down button.
Check the software volume settings.
Please check to see if Mute is turned to Off
Check to make sure the headphone connection is
secure.
Check within the Windows Device Manager
application to ensure the sound device is enabled
and that the device is properly working.
Annoying sound is
heard
In this instance you may be experiencing feedback
from either the internal microphone or an external
microphone connected to the computer - please
refer to Sound System in Chapter 3, Operating
Basics for further information.
Volume cannot be adjusted during Windows start
up or shut down.
If you are still unable to resolve the problem,
contact your reseller, dealer or service provider.
Problem Procedure
Monitor does not turn
on
After confirming that the monitor's power switch is
on, you should check the connections to make sure
that the power cord/adaptor is firmly connected to
the monitor and to a working power outlet.