4 Using the Torx #T30 screwdriver, tighten the screws on the heat sink in the order below:a Partially tighten the first screw (approximately 3 turns).b Tighten the second screw completely.c Return to the first screw and tighten it completely.If the PHM slips off the blue retention clips when the screws are partially tightened, follow these steps to secure the PHM:a Loosen both the heat sink screws completely.b Lower the PHM on to the blue retention clips, follow the procedure described in step 2.c Secure the PHM to the system board, follow the procedure described in step 4.NOTE: The processor and heat sink module retention screws should not be tightened to more than 0.13 kgf-m (1.35 N.mor 12 in-lbf).Next step1 Follow the procedure listed in After working inside your system.Expansion cards and expansion card risersAn expansion card in the system is an add-on card that can be inserted into an expansion slot on the system board or riser card to addenhanced functionality to the system through the expansion bus.NOTE: A System Event Log (SEL) event is logged if an expansion card riser is not supported or missing. It does not prevent yoursystem from turning on. However, if F1/F2 pause occurs and an error message is displayed.Removing expansion card from the expansion card riserPrerequisites1 Follow the safety guidelines listed in Safety instructions.2 Follow the procedure listed in Before working inside your system.3 If applicable, remove the air shroud.4 If applicable, disconnect the cables from the expansion card.5 When removing a card from low profile or full height X1 riser, ensure that the PCIe card holder latch is closed.Steps1 Pull the expansion card latch out of the slot.2 Hold the expansion card by its edges, and pull the card until the card edge connector disengages from the expansion card connectoron the riser.70 Installing and removing system components
