User’s Manual 4-35
Operating Basics

Sound system

This section describes some of the audio control functions.

Adjusting System Volume

You can control the overall level of sound using Windows Volume Mixer.
To launch Volume Mixer, follow the steps below.
1. Locate the Speaker icon on the task tray.
2. Right-click the Speaker icon on the task tray.
3. Select Open Volume Mixer from the menu.
Click the Device button to display available playback devices. Select Speakers to
use the internal speakers for listening. Adjust speaker volume by moving the slider
up or down to raise or lower the volume. Click the Mute button to mute the sound.
You may see another control under Applications in Volume Mixer. It is the
control for an application which is currently running. The Windows Sounds is
always displayed since it controls the system sounds’ volume.Changing System
Sounds
System sounds are assigned to inform you when certain events happen. This
section explains how select an existing scheme or save one you have modied.
To launch the conguration dialog window for system sounds, follow the steps
below:
1. Right-click the Speaker icon on the task tray.
2. Select Sounds from the memu.

Realtek HD Audio Manager

You can conrm and change the audio conguration using the Realtek Audio
Manager. To launch the Realtek Audio Manager, Click Start Control Panel
Hardware and Sound Realtek HD Audio Manager. When you rst
launch the Realtek Audio Manager, you will see following device tabs. Speakers
is the default output device. Microphone is the default input device. To change
the default device, click the Set Default Device button under the chosen device
tab.
n Speakers is the default output device. Select it when using the internal
speakers or headphones.
n Digital Output should be selected when connecting the optical cable to the
Headphone, S/PDIF and Line out jack for playing digital sound on digital audio
equipment. Digital Output can only be used by connecting an optical audio
cable.