Dell OptiPlex 7040 - Mini Tower, Owner'S Manual, Page: 27 / 53

Removing the system board
1. Follow the procedure in Before Working Inside Your Computer .
2. Remove the:
•
cover
• bezel
3. Open the front bezel door .
4. Remove the:
•
heat sink assembly
• processor
• PCIe expansion card
• optional Ethernet port card
• optional SSD card
• memory module
5. Disconnect all the cables from the connectors on the system board.
6. To remove the system board:
a. Remove the screws that secure the system board to the computer [1].
b. Slide the system board toward the front of the computer and lift it away from the computer [2].
Installing the system board
1. Hold the system board by its edges and angle it toward the back of the computer.
2. Lower the system board into the computer until the connectors at the back of the system board
align with the slots on the back wall of the computer, and the screw holes on the system board align
with the standoffs on the computer.
3. Tighten the screws to secure the system board to the computer.
4. Route all the cables through the routing channels and connect all the cables to the connectors on
the system board.
5. Install the:
•
memory module
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