Service Manual
Table Of Contents
- Dell™ Vostro™ 420/220/220s Service Manual
- Troubleshooting
- Working on Your Computer
- Computer Cover
- Bezel
- Chassis Support Bracket
- PCI and PCI Express Cards
- Drives
- I/O Panel
- Fan
- Processor Heat Sink/Fan Assembly
- Memory Module(s)
- Power Supply
- Coin-Cell Battery
- System Board
- Processor
- System Setup Program
- Contacting Dell
30 Troubleshooting
Sound and Speaker Problems
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions that shipped with your computer. For additional safety best
practices information, see the Regulatory Compliance Homepage at
www.dell.com/regulatory_compliance.
No sound from speakers
NOTE: The volume control in MP3 and other media players may override the
Windows volume setting. Always check to ensure that the volume on the media
player(s) has not been turned down or off.
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 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.
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
REINSTALL THE SOUND DRIVER
RUN THE HARDWARE TROUBLESHOOTER — See "Hardware Troubleshooter" on
page 12.
No sound from headphones
CHECK THE HEADPHONE CABLE CONNECTION — Ensure that the headphone cable is
securely inserted into the headphone connector (see "Inside View of Your Computer"
on page 37).
A
DJUST 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