Sony PCG-XG18 Primary User Manual page 87

If the built-in speakers are turned off, press Fn+F3 to turn on the
speakers. You can also turn on the speakers using the Jog Dial control.
If the speaker volume is turned to the minimum, press Fn+F4, and
then press to increase the volume or you can use the Jog Dial
or
control to control the volume.
If your computer is powered by batteries, check that the battery packs
are inserted properly and that they are charged.
If you are using an application that has its own volume control, check
that the volume is turned up.
®
Check the volume controls in Windows.
If you connect external speakers, check that the speakers are properly
connected and the volume is turned up. If the speakers have a mute
button, make sure it is off. If the speakers are powered by batteries,
check that the batteries are inserted properly and that they are
charged.
If you have connected an audio cable to the Headphone connector,
disconnect the cable.
Check that the phone line is plugged into the line jack. See
"Connecting a Phone Line" on page 48 for details.
Check that the phone line is working. You can check the line by
plugging in an ordinary phone and listening for a dial tone.
Check that the phone number the program is dialing is correct.
Check that the software you are using is compatible with the
notebook's modem. (All preinstalled Sony programs are compatible.)