Dell PowerEdge R760 Installation and Service Manual - Page 182

4. If the System Memory Size is incorrect, one or more of the memory modules may not be installed properly. . Shut down the system and ensure that the memory modules are firmly seated in the correct sockets. 5. Run the system memory test in system diagnostics. Processor and heat sink module This is a service technician replaceable part only. Removing the processor and heat sink module Prerequisites 1. Follow the safety guidelines listed in the Safety instructions. 2. Follow the procedure listed in the Before working inside your system. 3. Remove the air shroud or remove the GPU air shroud. NOTE: The heat sink and processor are hot to touch for some time after the system has been powered off. Allow the heat sink and processor to cool down before handling them. Steps 1. Ensure all four anti-tilt wires are in the locked position (outward position), and then using a Torx T30 screwdriver, loosen the captive nuts on the processor heat sink module (PHM) in the order that is mentioned below: a. Loosen the first nut three turns. b. Loosen the nut diagonally opposite to the nut you loosened first. c. Repeat the procedure for the remaining two nuts. d. Return to the first nut and loosen it completely. NOTE: Ensure that the anti-tilt wires on the PHM are in locked position when loosening the captive nuts. 2. Set all the anti-tilt wires to unlocked position (inward position). Figure 136. Removing the processor heat sink module 3. Lift the PHM from the system and set the PHM aside with the processor side facing up. 182 Installing and removing system components