Figure 42. 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.CAUTION: Do not lift the system board assembly by grasping a memory module, processor, or othercomponents.CAUTION: Take care not to damage the system identification button while placing the system board into thechassis.2. Hold the system board by its edges and angle it toward the back of the chassis.3. Lower the system board into the chassis till the connectors at the back of the system board align with the slots onthe rear wall of the chassis, and the screw holes on the system board align with the standoffs on the chassis.4. Install the nine screws that secure the system board to the chassis.5. Replace the following:a) internal dual SD moduleb) heat sink/heat-sink blank and processor/processor blankc) expansion-card risersd) all expansion cards and the integrated storage controller carde) cooling fan cablesf) memory modulesg) PDB shroudh) cooling shroud82