Dell OptiPlex 980 (Early 2010) - Manual (Page 80)

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System Board
Dell™ OptiPlex™ 980 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 Board
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the optical drive .
3. Remove the heat sink and processor .
4. Remove the memory .
5. Remove the expansion card .
6. Disconnect all the cables on the system board.