Replacing the 8248-L4T, 8408-E8D, or 9109-RMD system processor modules

Learn how to replace the system processor modules that are part of a service action.

1. Prepare the system processor module for installation:
   1. Using the removal tool, align the beveled corner (A) of the tool over the beveled corner of the module, as shown in Figure 1.
   2. Lower the tool over the system processor module by ensuring that the two guide pins (B) are inserted into the alignment holes on each side of the tool, as shown in Figure 1. Then push down on the tool to lock the system processor module into the tool, as shown in Figure 2.
   Figure 1. Preparing for system processor module installation

   
   Figure 2. Locking the system processor module into the tool

   
2. Prepare for system processor module installation:
   1. Grasping the sides of the tool and system processor module, carefully lift it slightly out of the system processor module tray. Then turn it over so that the system processor module side is up.
   2. Ensure that all four jaws (A) are firmly grabbing the system processor module, as shown in Figure 3.
      Note: If one of the jaws is not firmly grabbing the system processor module, press down on the corner of the system processor module closest to the jaw until it locks into place. Do not touch any part of the system processor module other than the corners.
   Figure 3. Preparing for system processor module installation

   
3. Install the system processor module:
   1. Lower the tool and system processor module onto the socket, ensuring that the two guide pins are inserted into the alignment holes on each side of the tool.
      Note: Do not attempt to slide the tool and the system processor module in any direction while the system processor module is touching the socket. If the tool and the system processor module are not aligned with the guide pins, lift the tool and the system processor module and reposition them.
   2. After the tool and system processor module holes and guide pins are properly aligned, squeeze and hold the two tool tabs (A) together until a firm stop is reached. Then lift the tool off the system processor module, as shown in Figure 4.
   Figure 4. Installing the system processor module

   
4. Inspect the thermal interface material (TIM) for visible signs of damage, as shown in Figure 5.
   Note: When the heat sink is removed from the failed system processor module, the TIM should be adhered to the heat sink. Unless damaged, the TIM that is adhered to the heat sink can be reused. Replacing the TIM is optional and is only performed if the TIM is damaged. Do not reuse the removed heat sink if the TIM is damaged. Either discard the heat sink and the damaged TIM locally or return them to IBM based on part-order-form part status.
   Figure 5. Inspecting the thermal interface material

   
5. Are you replacing the TIM or heat sink?

   Yes:

   Continue with the next step.

   No:

   Go to step 7.

6. Install a new TIM pad:
   1. If the TIM or heat sink must be replaced, order part number 00E8868, Heat sink and TIM.
   2. Open the TIM packaging and carefully remove the TIM, holding it by the edges of the carrier strip and holding it away from the shipping container.
   3. Remove the protective film from the clear carrier strip by using the supplied tweezers.
      Note: The TIM must remain flat. Small wrinkles are acceptable, but folds are not acceptable.
   4. Using the tweezers, remove the TIM from the carrier strip and center it onto the system processor module with the black side facing up. Align the beveled edges of the TIM and the system processor module (A), as shown in Figure 6.
      Figure 6. Installing the TIM onto the processor lid

      
7. Install the heat sink:
   1. Lower the heat sink over the system processor module, ensuring that the two guide pins (B) are inserted into the alignment holes on each side of the tool, as shown in Figure 7.
   2. Ensure that the heat-sink load arm is engaged.
      Note: If the load arm is not engaged, you must manually engage the load arm onto the heat sink while the load screw is being tightened. See Figure 8.
      Figure 7. Installing the heat sink

      
8. Secure the heat sink:
   1. Upon placing the heat sink on the system processor module, ensure that the heat-sink load arm on the side of the heat sink becomes engaged, as shown in Figure 8.
   2. While holding the heat sink in place, use the supplied nut driver to tighten the heat-sink actuation screw. Turn the screw clockwise a few turns.
   3. Is the load arm still engaged?

      Yes:

      Continue turning the actuation screw clockwise until a firm stop is reached.

      No:

      Unscrew the actuation screw. Hold the load arm onto the heat sink while tightening the screw until a firm stop is reached.

      Note: If during this step, the heat sink moves noticeably, it is likely that the load arm is not engaged. If the heat sink moves noticeably, unscrew the actuation screw and hold the load arm onto the heat sink while tightening the screw until a firm stop is reached.
   Figure 8. Securing the heat sink

   
9. Lightly grip the system processor module that you replaced by the edges and lift it off of the packaging cover. Align the beveled corner of the module (A) to the corner of the packaging with triangle (B) and place it in the packaging, as shown in Figure 9. Close the packaging cover.
   Figure 9. Placing the system processor module into the packaging

   
10. Replace the system processor assembly. For instructions, see Replacing the 8248-L4T, 8408-E8D, or 9109-RMD system processor assembly.
11. Replace the front covers. For instructions, see Replace the front covers for the 8248-L4T, 8408-E8D, or 9109-RMD.
12. Connect both power cords.
13. Go to Verifying a repair.