Dell OptiPlex SX280 - Manual (Page 77)

Sound and Speaker Problems
Fill out the Diagnostics Checklist as you complete these checks.
No sound from speakers
No sound from headphones
Video and Monitor Problems
Fill out the Diagnostics Checklist as you complete these checks.
If the screen is blank
NOTE: If you are having a problem with a printer, see " Printer Problems .
Check the option setting — See the device's documentation for the recommended settings. Then enter system setup and go to the Legacy
Select option setting. Ensure that the Serial Port setting or the Parallel Port setting matches the recommended settings.
Run the Dell Diagnostics
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
NOTE: The volume control in some MP3 players overrides the Windows volume setting. If you have been listening to MP3 songs, ensure that you did
not turn the player volume down or off.
Check the speaker cable connections — Ensure that the speakers are connected as shown on the setup diagram supplied with the
speakers.
Ensure 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.
Adjust the Windows 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.
Disconnect headphones from the headphone connector — Sound from the speakers is automatically disabled when headphones are
connected to the computer's front-panel headphone connector.
Enable digital mode — Your speakers do not work if the CD drive is operating in analog mode.
1. Click the Start button, click Control Panel, and then click Sounds, Speech, and Audio Devices.
2. Click Sounds and Audio Devices.
3. Click the Hardware tab.
4. Double-click the name of your CD drive.
5. Click the Properties tab
6. Check the Enable digital CD audio for this CD-ROM device box.
Eliminate possible interference — Turn off nearby fans, fluorescent lights, or halogen lamps to check for interference.
Run the speaker diagnostics
Reinstall the audio driver
Check the device option setting — Enter system setup and ensure that the audio controller option is set to On. Exit system setup and
restart your computer.
Run the Dell Diagnostics
Check for Software and Hardware Conflicts
Check the headphone cable connection — Ensure that the headphone cable is securely inserted into the headphone connector.
Plug the headphones into the back audio-out connector
Adjust the Windows 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.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.