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Chassis Speaker

Dell™ OptiPlex™ SX280 User's Guide

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.

Your computer may ship with an optional chassis speaker. If you need to replace this speaker or install a new speaker, perform the following steps:

1. Follow the procedures in "Before You Begin."
   
   
2. If you are installing a new speaker, skip to step 4.
   
   
3. If you are replacing the speaker:
   
   
   1. Disconnect the speaker cable from the system board.
      
      
   2. Press on the tab and slide the speaker out of the slot and remove the speaker and its attached cable from the computer.

4. Insert the chassis speaker into the slot and then slide the speaker until the speaker is secured.

5. Connect the speaker cable to the connector on the system board.
   
   
6. Replace the computer cover.
   
   
7. Replace the cable cover, if used.
   
   

NOTICE: To connect a network cable, first plug the cable into the network wall jack, and then plug it into the computer.

8. Connect your computer to the adapter cable, and connect devices to electrical outlets, and turn them on.
   
   

After you replace the cover, the chassis intrusion detector, if enabled, causes the following message to appear on the screen at the next computer start-up:

ALERT! Cover was previously removed.

9. Reset the chassis intrusion detector by changing the Chassis Intrusion option to On or On-Silent.
   
   

NOTE: If an admin password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.

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