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User’s Manual 4-28
PORTÉGÉ/TECRA R700 Series
4. Hold the CD or DVD by its outside edge or the edge on the center hole -
any fingerprints on the surface of the disc can prevent the drive from
properly reading data.
5. Do not expose the CD or DVD to direct sunlight, extreme heat or cold.
6. Do not place heavy objects on your CD's or DVD's.
7. If your CD's or DVD's become dusty or dirty, wipe them with a clean dry
cloth from the center hole outwards - do not wipe in a circular direction.
If necessary, you can use a cloth that has been lightly dampened in
water or a neutral cleaner but you must not use benzine, thinner or any
similar cleaning solution.
Sound System
This section describes some of the audio control functions.
Volume Mixer
The Volume Mixer utility lets you control the audio volume for playback of
devices and applications under Windows.
■ To launch the Volume Mixer utility, right click on the speaker icon on the
Taskbar, and select Open Volume Mixer from the sub menu.
■ Adjust speaker volume by moving the slider up or down under Device
to raise or lower the volume of your speakers. Click the Mute button to
mute the volume.
■ You may see another control under Applications in Volume Mixer. It is
the control for an application which is currently running. The System
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 to 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 taskbar.
2. Select Sounds from the menu.
Microphone Level
Follow the steps below to change the microphone recording level.
1. Right click on the speaker icon on the Taskbar, and select Recording
devices from the sub menu.
2. Select Microphone, and click Properties.
3. On the Levels tab move the Microphone slider to increase or decrease
the microphone volume level.