Sony PCG-R505GCK - Manual (Page 182)

VAIO Computer Quick Start
188
6 Close the Profile Editor window.
Why doesn’t my volume control dial work?
❑ You can also press Fn+F4 to increase the volume. If you double-click the
Volume icon
on the Windows® taskbar, you can view your changes on
the Volume Control window.
Why doesn’t my microphone work?
If you are using an external microphone, make sure the microphone is properly
plugged into the Microphone jack
on the computer. See “Connecting a
microphone” for more information.
✍
The Volume icon and Fn+F4 shortcuts will work only when the volume dial
control is set to an audible level.