Dell OptiPlex 780 - Manual (Page 31)

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Power Supply
Dell™ OptiPlex™ 780 Service Manual—Small Form Factor
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 Power Supply
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the optical drive .
3. Remove the floppy drive .
4. Disconnect the processor power cable from the system board.
5. Remove the processor power cable from the routing guides on the chassis.