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 Mixe r. 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
modified.
To launch the configuration dialog window for system sounds, follow the
steps below.
1. Right-click the Speaker icon on the task tray.
2. Select Sounds from the menu.

Realtek HD Audio Manager

You can confirm and change the audio configuration using the Realtek
Audio Manager. To launch the Realtek Audio Manager, click Start →
Control Panel → Hardware and Sound → Realtek HD Audio Manager.
When you first 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.
■Speakers is the default output device. Select it when using the internal
speakers or headphones.
■Digital Output should be selected when connecting the optical cable to
the Headphone (S/PDIF) jack for playing digital sound on digital audio
equipment. Digital Output can only be used by connecting an optical
audio cable.
■HDMI Output should be selected when connecting the HDMI cable to
the HDMI jack for playing digital sound on digital audio equipment.