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9-18 User’s Manual
L550/L550D/L555/L555D
Sound system
In addition to the information in this section, please also refer to the
documentation supplied with your audio device.
Volume control
Problem Procedure
No sound is heard Adjust the volume control.
Turn the dial clockwise to increase the volume
and turn the dial counterclockwise to decrease
the volume.
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 function is
enabled.
If you are still unable to resolve the problem,
contact your reseller, dealer or service provider.
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 4, Operating Basics, for further
information.
Volume cannot be adjusted when Windows is
turned on or turned off.
If you are still unable to resolve the problem,
contact your reseller, dealer or service provider.
Problem Procedure
No sound is heard Adjust the volume control.
Turn the dial clockwise to decrease the volume
and turn the dial counterclockwise to increase
the volume.
Turn the volume control while verifying the
volume in order to adjust.
Annoying sound is
heard
Volume cannot be adjusted when Windows is
turned on or turned off.
If you are still unable to resolve the problem,
contact your reseller, dealer or service provider.