h) internal dual SD modulei) expansion card holderNOTE: It is recommended that you remove the power distribution board before removing the system board from thechassis.5. Disconnect all other cables from the system board.CAUTION: Do not lift the system board assembly by grasping a memory module, processor, or other components.6. Remove the nine screws on the system board and slide the system board toward the front of the system.7. Slide the system board toward the front of the system.Figure 58. Removing and Installing the System Board1. screws (9)2. system boardInstalling The System BoardCAUTION: 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.1. Unpack the new system board assembly.2. Transfer the following components to the new system board:a) heat sink(s)/heat-sink blank(s) and processors(s)/processor blank(s)b) memory modules and memory module blanksCAUTION: Do not lift the system board assembly by grasping a memory module, processor, or other components.CAUTION: Take care not to damage the system identification button while placing the system board into thechassis.3. Hold and align the system board by its edges and align it to the back of the chassis.99
