dynabook PORTEGE X40-K, User Manual

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Problem Procedure
"USB Wake-up
function" does not
work When "System ON CDP Charge Mode" or "Power
Off and Charge function" is enabled, the "USB
Wake-up" function does not work for ports that
support the Power Off and Charge function.
In that case, use a USB port that does not have the
Power Off and Charge function or change to
disable both "System ON CDP Charge Mode" and
"Power Off and Charge function".
Sound system
In addition to the information in this section, also refer to the documentation
supplied with your audio device.
Problem Procedure
No sound is heard Press the function keys to increase or decrease
volume.
Check the software volume settings.
Check to see if Mute is turned to Off.
Check to make sure that the headphone
connection is secure.
Check within the Windows Device Manager
application to ensure that the sound device is
enabled and that the device is properly working.
Annoying sound is
heard In this instance, you might be experiencing
feedback from either the internal microphone or an
external microphone connected to the computer.
Refer to
Sound System and Video mode for further
information.
Volume cannot be adjusted during Windows start
up or shut down.
If you are still unable to resolve the problem,
contact Technical Support.
External monitor
Also refer to Operating Basics , and to the documentation supplied with
your monitor for further information.
User's Manual 6-13