Sony PCG-R505GL - Manual (Page 127)

Using Speakers
127
3 Click to cancel any Mute check boxes that are selected.
Enabling the audio feature
If you do not hear sound when playing a CD or DVD, you may need to enable the
audio feature.
To enable the audio feature
1 Click Start on the Windows® taskbar, and click Control Panel.
2 Click Performance and Maintenance, and click System. The System
Properties window appears.
Sound device Function
Volume Control Adjust the sound level from the speakers or
headphones.
Wave Adjust the wavfile sound or the system sound of
Windows.
SW Synth Adjusts the internal or external synthesizer volume.
CD Audio Adjust the volume of the CD in the optional optical
drive.
Microphone Adjust the internal or external microphone volume.
Telephony Adjust the modem or telephone volume.
PC Beep Adjust the beep sound when inserting or removing
the PC Card and other devices.
Line
*
* On selected models only.
Adjusts the sensitivity of volume input.
✍
As a short-cut, you can press the Fn+F4 key combination and the arrow keys or
to change the volume setting. You can also press the Fn+F3 key combination to
toggle the mute option on and off.