Dell Precision 370 DHM, User'S & Service Manual, Page: 123 / 182

Fill out the Diagnostics Checklist as you complete these checks.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in
the Product Information Guide .
No sound from speakers
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. If you purchased an audio card, ensure that the speakers are connected to
the card.
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.
Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device,
such as a lamp.
Enable digital mode — Your speakers do not work if the CD drive is operating in analog mode.
Windows XP
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.
Windows 2000
1. Click the Start button, point to Settings → Control Panel , and then click Sounds and Multimedia .
2. Click the Hardware tab.
3. Click the name of your CD drive and click Properties .
4. Click the Properties tab.
5. 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 —
See Reinstalling Drivers and Utilities .
Check the device option setting — Enter system setup and ensure that Sound under the Integrated
Devices option is set to On . Exit system setup and restart your computer.
Run the Dell Diagnostics
Check for Software and Hardware Conflicts
No sound from headphones
Check the headphone cable connection — Ensure that the headphone cable is securely inserted into the
headphone connector. See " Your Desktop Computer " or " Your Mini-Tower Computer ."