Dell Precision 3660 Manuel De Maintenance page 55

About this task
The following images indicate the location of the power-supply unit and provide a visual representation of the removal procedure.
Steps
1. Lay the system on the right side.
2. Disconnect the power cables from the connectors on the system board and unroute them from the routing guides on the chassis.
3. Remove the four (M6x32) screws that secure the power-supply unit to the chassis.
4. Slide the power-supply unit away from the back of the chassis.
5. Lift the power-supply unit off the chassis.
Installing the 750W/1000W power-supply unit
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
WARNING: When upgrading to a 750W or 1000W power supply unit, an additional extension cable is required.
Retrait et installation de composants 55