Install the Lenovo Processor Neptune Core Module

Follow the instructions in this section to install the Processor Neptune^® Core Module (NeptCore).

Procedure

1. Install the processor in the new carrier.
   Note

   • If you are replacing the processor and reusing the cold plate, use the new carrier that comes with the new processor.
   • If you are replacing the cold plate and reusing the processor, and if the new cold plate comes with two processor carriers, make sure to use the same type of carrier as the one you discarded.

   1. Make sure the handle on the carrier is in the closed position.
   2. Align the processor on the new carrier so that the triangular marks align; then, insert the marked end of the processor into the carrier.
   3. Hold the inserted end of the processor in place; then, pivot the unmarked end of the carrier down and away from the processor.
   4. Press the processor and secure the unmarked end under the clip on the carrier.
   5. Carefully pivot the sides of the carrier down and away from the processor.
   6. Press the processor and secure the sides under the clips on the carrier.
      Note

      To prevent the processor from falling out of the carrier, keep the processor-contact side up and hold the processor-carrier assembly by the sides of the carrier.
      Figure 1. Processor carrier installation
      
      
2. Apply thermal grease.
   • If you are replacing the cold plate and reusing the processor, a new cold plate comes with thermal grease and you do not need to apply new thermal grease.
     Note

     To ensure the best performance, check the manufacturing date on the new cold plate and make sure it does not exceed two years. Otherwise, wipe off the existing thermal grease and apply new thermal grease.
   • If you are replacing the processor and reusing the cold plate, do the following steps to apply thermal grease:
     1. If there is any old thermal grease on the cold plate, wipe off the thermal grease with an alcohol cleaning pad.
     2. Carefully place the processor and carrier in the shipping tray with the processor-contact side down. Make sure the triangular mark on the carrier is oriented in the shipping tray as shown below.
     3. Apply the thermal grease on the top of the processor with syringe by forming four uniformly spaced dots, while each dot consists of about 0.1 ml of thermal grease.
        Figure 2. Thermal grease application with processor in shipping tray
        
        
3. Assemble the processor and cold plate.
   Figure 3. Installing processor to cold plate
   
   
   1. Align the triangular mark on the processor carrier and processor with the triangular mark on the cold plate.
   2. Install the processor-carrier onto the cold plate.
   3. Press the carrier into place until the clips at all four corners engage. Visually inspect to make sure that there is no gap between the processor carrier and the cold plate.
4. Install the cold plate assembly.
   Figure 4. Installing cold plate assembly
   

   

   
   

   Note

   • Do not touch the contacts on the bottom of the processor.
   • Keep the processor socket clean from any object to prevent possible damages.
   1. Hold the handle on the cold plate assembly and gently insert the hoses into the opening on the rear of the chassis.
   2. Pivot the front of the cold plate assembly at an angle and align the four Torx T30 nuts on each cold plate with the corresponding threaded posts of the processor socket.
   3. Insert the cold plate assembly into the processor socket.
5. Tighten the thumbscrews to secure the cold plate assembly. Use a screwdriver if necessary.
   Figure 5. Installing cold plate assembly
   

   

   
   
6. Tighten all the Torx T30 nuts on the cold plate assembly.
   Figure 6. Tightening Torx T30 nuts
   

   

   
   
   1. Rotate the anti-tilt wire bails outward until they engage with the hooks in the socket.
   2. Fully tighten the Torx T30 nuts in the installation sequence shown on the cold plate assembly label. Tighten the screws until they stop; then, visually inspect to make sure that there is no gap between the screw shoulder beneath the cold plate assembly and the processor socket. (For reference, the torque required to fully tighten the nuts is 10 +/– 2.0 lbf-in, 1.1 +/– 0.2 N-m.)
7. Rotate all plungers counterclockwise to the unlocked position in the removal sequence shown on the carrier label.
   Figure 7. Loosening cold plate carrier
   

   

   
   
8. Remove the cold plate carrier from the cold plate assembly.
   Figure 8. Removing cold plate carrier
   

   

   
   
9. Install the cold plate covers. Press the covers down as illustrated below.
   Figure 9. Installing cold plate covers
   

   

   
   
10. Install the riser filler.
    Figure 10. Installing riser filler
    

    

    
    
11. Connect the leakage detection sensor module cable to the connector on the system board assembly.
    Figure 11. Connecting leakage detection sensor module
    

    

    
    

    1 Leakage sensor connector