Installing the midplane assemblyPrerequisitesCAUTION: Many repairs may only be done by a certified service technician. You should only performtroubleshooting and simple repairs as authorized in your product documentation, or as directed by the online ortelephone service and support team. Damage due to servicing that is not authorized by Dell is not covered byyour warranty. Read and follow the safety instructions that came with the product.NOTE: This is a field replaceable unit (FRU). Removal and installation procedures should be performed only by Dell certifiedservice technicians.1. Ensure that you read the Safety instructions on page 33.2. Follow the procedure listed in Before working inside your system on page 33.3. Remove the midplane assembly.NOTE: You must remove the midplane assembly to replace a faulty assembly.Steps1. Route the KVM and control panel cables in the brackets on the midplane assembly.2. Reconnect the KVM and control panel cables to the respective connectors on the midplane assembly.3. Place the midplane assembly in the system.4. Install the five screws to secure the midplane assembly to the system.5. Install the two screws to secure the fan-cable clips to the system.6. Reconnect the two fan cables to the midplane assembly.7. Secure the fan cables by inserting the cables in fan cable clips.8. Reconnect the KVM cable connector to the connector in the KVM panel.9. Install the screws to secure the cable tube and KVM panel cover on the right side of the chassis.10. Install the screws to secure the cable tube on the left side of the chassis.Next steps1. Install the following:● interposer module(s)● fan interface board, if applicable● PCIe modules and PCIe switch board, if applicable● cooling-fan cage● cooling fans● system cover● I/O module(s)● CMC module● power supplies● sleds2. Follow the procedure listed in After working inside your system on page 33.Related tasksInstalling the top interposer module on page 68Installing the bottom interposer module on page 64Installing the fan interface board on page 59Installing the PCIe switch board on page 57Installing a PCIe module on page 46Installing the cooling-fan cage on page 55Installing a cooling fan on page 53Installing the system cover on page 35Installing an I/O module on page 44Installing the CMC module on page 42Installing and removing PowerEdge FX2/FX2s enclosure components 73