Dell EMC PowerEdge R940xa Installation and Service Manual

Installing a processor and heat sink module

1. Align the Pin1 indicator on the heat sink with the indicator on the system board and 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 in place.
3. Using the Torx #T30 screwdriver to tighten the screws on the heat sink in the order mentioned 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.
   3. Secure the PHM to the system board, following the replacement instructions listed in this step mentioned above.
   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).