Sony PCG-NV290 - Manual (Page 137)

Using Speakers
137
Why do I hear noise distortion while listening to music with speakers or
headphones?
You may experience noise distortion while listening to music with speakers or
headphones if the CPU control is set to Automatic Profile Selection. Use the
preinstalled PowerPanel™ program to set the CPU control to Performance or
Battery Life. If you are using a memory-intensive program, set the CPU to
Performance.
*
Follow these steps:
1 Right-click the CPU icon on the Windows® taskbar, and click
Edit/Create Profiles. The Profile Editor window appears.
2 In the left panel, click the power management profile that you want to set.
Maximum Battery Life is the default selection when your computer is
running on battery power.
3 In the right panel, double-click either CPU Control (Plugged in) or CPU
Control (Running on batteries), depending on the power source you are
using. A menu of CPU Control options appears.
4 Select an option. If you are using a memory-intensive program, set the CPU
control to Performance.
5 Click the File menu, and click Save.
6 Close the Profile Editor window.
Why doesn’t my volume control dial work?
❑ Your volume control dial will work only when the Volume icon is set to
an audible level. Use the Volume icon to increase the volume.
1 Double-click the Volume icon on the taskbar. The Volume Control
window appears.
2 In the Volume Control column, move the slider up to increase the
volume. If Mute all is selected, click the check box to cancel it.
* Applicable to models with a Crusoe™ processor.
✍
Unlike the Volume icon , the volume control dial adjusts only the sound level from
the speakers or headphones.