4. Open the system.5. Disconnect the P1 and P2 power cables from the power supply unit to the system board connectors.6. Remove the screws securing the power supply unit to the chassis.7. Press the release tab beside the power supply unit, and slide the power supply unit towards the frontof the system.8. Lift the power supply unit out of the system.Figure 27. Removing and Installing the Power Supply Unit1. P1 power cable 2. P2 power cable3. release tab 4. power supply unit5. screws (4)Installing The Power Supply UnitCAUTION: Many repairs may only be done by a certified service technician. You should onlyperform troubleshooting and simple repairs as authorized in your product documentation, or asdirected by the online or telephone service and support team. Damage due to servicing that isnot authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat came with the product.1. Turn off the system, including any attached peripherals, and disconnect the system from theelectrical outlet and peripherals.2. Lay the system on its side, on a flat and stable surface.3. Unpack the new power supply unit.4. Open the system.5. Place the power supply unit in the chassis and slide it towards the back of the chassis.57
