OptiPlex 7040 - Small Form Factor Owner's Manual

Removing the power supply unit (PSU)

1. Follow the procedure in Before Working Inside Your Computer.
2. Remove the:
   1. cover
   2. front bezel
   3. hard drive assembly
   4. optical drive
   5. fan duct
3. To release the PSU:
   1. Disconnect the power cable from the system board [1] [2].
   2. Unroute the power cables from the retention clips on the chassis [3] [4].
   
4. To remove the PSU:
   1. Disconnect the power cable from the system board [1] [2].
   2. Lift the cables away from the computer [3].
   3. Remove the screws that secure the PSU to the computer [4].
   
5. Press the blue release tab [1], slide the PSU and lift it away from the computer [2].