Dell EMC PowerEdge R640 Installation and Service Manual

Installing a processor and heat sink module

1. Align the pin 1 indicator of the heat sink to the system board and then place the processor and heat sink module (PHM) on the processor socket.
   CAUTION:To avoid damaging the fins on the heat sink, do not press down on the heat sink fins.

   NOTE:Ensure that the PHM is held parallel to the system board to prevent damaging the components.
2. Push the blue retention clips inward to allow the heat sink to drop into place.
3. Using the Torx #T30 screwdriver, tighten the screws on the heat sink in the order below:
   1. Partially tighten the first screw (approximately 3 turns).
   2. Tighten the second screw completely.
   3. 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:

   1. Loosen both the heat sink screws completely.
   2. Lower the PHM on to the blue retention clips, following the procedure described in step 2.
   3. Secure the PHM to the system board, following the replacement instructions listed in this step above. 4.
   NOTE:The processor and heat sink module retention screws should not be tightened to more than 0.13 kgf-m (1.35 N.m or 12 in-lbf).