b) If installed, remove the wheel assembly.c) Remove the screw securing the base cover to the chassis.d) Slide the cover toward the back of the system and lift it away from the chassis.Figure 53. Removing and Installing the System Top and Base Covers1. tabs on the inside of top and base covers2. system top cover3. screws (2)4. chassis slots5. system base coverInstalling The System Top And Base CoversCAUTION: 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 by yourwarranty. Read and follow the safety instructions that came with the product.NOTE: To install the top cover, extend the top of the system slightly off the surface edge. To install the base cover,extend the base of the system slightly off the surface edge.1. Align the tabs on the inside of the covers, with the slots on the chassis.2. Lower the covers to the chassis and slide the covers toward the front of the system, until firmly seated.When firmly seated, the hooks on the covers align with the slots on the mounting ears.3. Install the screws to secure the covers to the chassis.4. Reinstall the PCIe cage door.5. Close the system.6. If applicable, reinstall the wheel assembly.7. Place the system upright on a flat, stable surface.If the wheel assembly is not installed, rotate the system feet outward.8. If applicable, reinstall the power cable retention bracket and route the power supply cables through it.90
