Dell OptiPlex 980 (Early 2010) - Manual (Page 57)

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Internal Speaker
Dell™ OptiPlex™ 980 Service Manual—Desktop
WARNING: Before working inside your computer, read the safety information that shipped with your
computer. For additional safety best practices information, see the Regulatory Compliance Homepage at
www.dell.com/regulatory_compliance.
Removing the Internal Speaker
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the wireless module .
3. Disconnect the internal speaker cable.