2. Install the system board. For more information, see Installing the system board.3. Connect the power cables to the system board and the hard-drive backplane.4. If applicable, install the cooling fan assembly.5. Install the cooling shroud.6. Install the PCIe card holders.7. Install the power supply module(s) in their original locations.8. Follow the procedure listed in After working inside your system.Installing the power interposer boardPrerequisitesCAUTION: 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.Ensure that you read the Safety instructions.Steps1. Install the power distribution board (PDB).2. Align the power interposer board (PIB) connector with the connector on the PDB.3. Keeping the grooves on the PIB aligned with the pins on the chassis, connect the PIB to theconnector on the PDB.Next steps1. Install the system board. For more information, see Installing the system board.2. Connect the power cables to the system board and the hard-drive backplane.3. If applicable, install the cooling fan assembly.4. Install the cooling shroud.5. Install the PCIe card holders.6. Install the power supply module(s) in their original locations.7. Follow the procedure listed in After working inside your system.System top coverDo not remove the system top cover unless you are converting the system from tower to rack mode.Removing the system top coverPrerequisitesCAUTION: 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. Ensure that you read the Safety instructions.2. Keep the #2 Phillips screwdriver ready.141
