Dell OptiPlex 780 Personal Computer User Manual


 
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System Fan
Dell™ OptiPlex™ 780 Service Manual—Mini-Tower
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 System Fan
1. Follow the procedures in Before Working Inside Your Computer.
2. Disconnect the hard-drive power cable.
3. Disconnect the data cable from the hard drive.