Dell OptiPlex 3000 Series Service Manual page 53

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f
Heat sink
3
To release the PSU:
a
Disconnect the CPU power cable from the system board [1].
b Unroute the power cables from the retention clips on the chassis [2].
4
To remove the PSU:
a
Remove the 3 screws that secure the PSU to the system [1].
b Disconnect the system power cable from the connector on the system board [2].
c
Lift the cables away from the system [3].
d Press the blue release tab [4] at the rear end of the PSU unit, slide the PSU and lift it away from the system [5].
Removing and installing components
53

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