Sony PCG-505TR Handbuch

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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.

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If you have connected a headphone or an audio cable to the 
Headphone connector, disconnect the cable.

Use the following procedure to enable sound:

1

Click Start, select Settings, and click Control Panel.

2

Double-click the System icon.

3

Click the Device Manager tab.

4

Double-click Sound, video & game controllers.

5

Double-click ES1879 Control Interface (WDM).

6

Uncheck the "Disable this hardware profile" box.

7

Click Okay.  Sound is now enabled.

My modem does not work
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Check that the phone line is plugged into the line jack. See 
“Connecting a Phone Line” on page 34 for details.

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Check that the phone line is working. You can check the line by 
plugging in an ordinary phone and listening for a dial tone.

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Check that the phone number the program is dialing is correct.

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Check that the software you are using is compatible with the 
notebook computer modem. (All preinstalled programs are 
compatible.) Call the software publisher or Sony Customer Support.

The computer’s modem uses K56flex

TM

 technology/V.90. Many factors 

influence modem connection speed, including telephone line noise or 
compatibility with telephone equipment (such as fax machines or other 
modems). If you think your modem is not connecting properly to other 
PC-based modems, fax machines, or your Internet Service Provider, check 
the following: 

❑

Have your phone company check that your phone line is free from 
any line noise.