How to replace the Power supply unit on a Precision 7875 Tower

This 3D experience gives you the step by step process of replacing the Power supply unit and a Precision 7875 Tower. The procedure will also include removing the Side Cover, Air Shroud and reinstalling them.

Removal

Side Cover

1. Identify the side cover highlighted in blue.
2. Unlock the side panel latch using a Phillips screwdriver.
3. Press to open the latch of the side cover. Pull the release latch to release the side cover from the chassis.
4. Open the side cover at an angle and lift the cover away from the chassis.

Air Shroud

1. Identify the air shroud highlighted in blue.
2. Hold the top air shroud at the grip points and pull it upwards out of the chassis.

Power supply unit

1. Identify the power supply unit highlighted in blue.
2. Disconnect the ATX CPU processor power cables from the connectors on the system board.
3. Open the clips on the power supply cover.
4. Unroute the CPU ATX power cables.
5. Remove the screws that secure the power supply cover from the chassis.
6. Remove the power supply cover from the chassis.
7. Disconnect the SATA power cable from the ATX SYS connector on the system board.
8. Disconnect the PCIe power cables from the PCIe holder.
9. Open the bottom air shroud cover.
10. Unroute the PCIe power cables and SATA power cables through the routing guides.
11. Remove the screws that secure the power supply unit from the chassis.
12. Slide and lift the power upply unit off the chassis.

Install

Power supply unit

1. Identify the power supply unit location highlighted in blue.
2. Place the power supply unit on the chassis and slide it towards the back of the chassis.
3. Install the screws to secure the power supply unit to the chassis.
4. Route the PCIe power cables and SATA power cables through the routing guides.
5. Close the bottom air shroud cover.
6. Connect the PCIe power cables to the slots on the PCIe holder.
7. Connect the SATA power cable to the ATX SYS connector on the system board.
8. Align and place the power supply cover over the power supply unit.
9. Install the screws to secure the power supply cover to the chassis.
10. Route the CPU ATX power cables.
11. Close the clips on the power supply cover.
12. Connect the ATX CPU processor power cables to the connectors on the system board.

Air Shroud

1. Identify the air shroud location highlighted in blue.
2. Install the air shroud and press the top air shroud down until the tabs click into place.

Side Cover

1. Identify the side cover location highlighted in blue.
2. Align the tabs with the slots and install the side cover on the chassis.
3. Using a Phillips screwdriver, turn the side panel latch to the locked position.