DELL NT499 ユーザーズマニュアル

126

Troubleshooting

C

HECK

 

THE

 

SPEAKER

 

CABLE

 

CONNECTIONS

—

Ensure that the speakers are 

connected as shown on the setup diagram supplied with the speakers. If you purchased 
a sound card, ensure that the speakers are connected to the card.

E

NSURE

 

THAT

 

THE

 

SUBWOOFER

 

AND

 

THE

 

SPEAKERS

 

ARE

 

TURNED

 

ON

—

See the 

setup diagram supplied with the speakers. If your speakers have volume controls, 
adjust the volume, bass, or treble to eliminate distortion.

A

DJUST

 

THE

  W

INDOWS

 

VOLUME

 

CONTROL

—

Click or double-click the speaker icon 

in the lower-right corner of your screen. Ensure that the volume is turned up and that 
the sound is not muted.

D

ISCONNECT

 

HEADPHONES

 

FROM

 

THE

 

HEADPHONE

 

CONNECTOR

—

Sound from the 

speakers is automatically disabled when headphones are connected to the computer’s 
front-panel headphone connector.

T

EST

 

THE

 

ELECTRICAL

 

OUTLET

—

Ensure that the electrical outlet is working by 

testing it with another device, such as a lamp.

E

LIMINATE

 

POSSIBLE

 

INTERFERENCE

—

Turn off nearby fans, fluorescent lights, or 

halogen lamps to check for interference.

R

UN

 

THE

 

SPEAKER

 

DIAGNOSTICS

R

EINSTALL

 

THE

 

SOUND

 

DRIVER

—

R

UN

 

THE

  H

ARDWARE

  T

ROUBLESHOOTER

—

No sound from headphones

C

HECK

 

THE

 

HEADPHONE

 

CABLE

 

CONNECTION

—

Ensure that the headphone cable is 

securely inserted into the headphone connector (see "About Your Computer" on 
page 21).

A

DJUST

 

THE

  W

INDOWS

 

VOLUME

 

CONTROL

—

Click or double-click the speaker icon 

in the lower-right corner of your screen. Ensure that the volume is turned up and that 
the sound is not muted.

Video and Monitor Problems

 

CAUTION: 

Before you begin any of the procedures in this section, follow the 

safety instructions in the Product Information Guide.