Troubleshooting Without Diagnostics

Solving Audio Problems (Continued)

Problem

Cause

Solution

 

 

 

Sound does not come

External speakers

See the sound card documentation

out of the speaker or

plugged into the wrong

for proper speaker connection.

headphones.

audio jack.

 

 

(continued)

 

 

 

 

 

 

 

Digital CD audio is not

Enable digital CD audio:

 

enabled.

1.

From the Control Panel, select

 

 

 

 

 

System.

 

 

2.

On the Hardware tab, click

 

 

 

the Device Manager button.

 

 

3.

Right-click on the CD/DVD

 

 

 

device and select Properties.

 

 

4.

On the Properties tab, make

 

 

 

sure “Enable digital CD

 

 

 

audio for this CD-ROM

 

 

 

device” is checked.

 

 

 

 

Headphones or devices

Turn on and use headphones or

 

connected to the

external speakers, if connected, or

 

line-out connector mute

disconnect headphones or external

 

the internal speaker.

speakers.

 

 

 

 

 

Volume is muted.

1.

From the Control Panel

 

 

 

program, click Sound,

 

 

 

Speech and Audio

 

 

 

Devices, then click Sounds

 

 

 

and Audio Devices.

 

 

2.

Click the Mute check box to

 

 

 

remove the check mark from

 

 

 

the box.

 

 

 

 

Computer is in

Press the power button to resume

 

standby mode.

from standby mode.

Ä When attempting to resume from standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and any unsaved data will be lost.

Sound from headphones is

Headphones are

not clear or muffled.

plugged into the rear

 

audio output connector.

 

The rear audio

 

connector is for

 

powered audio devices

 

and is not designed for

 

headphone use.

Plug the headphones into the headphone connector on the front of the computer.

 

D–18

433612-001

Service Reference Guide, dc7700