Remove the Lenovo Compute Complex Neptune Core Module

Follow the instructions in this section to remove the Compute Complex Neptune Core Module.

Important

• This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install it without proper training and qualification.

• Contact Lenovo Professional Services team for help when installing the part for the first time.

About this task

Safety information for leakage detection sensor module cable

S011

CAUTION

Sharp edges, corners, or joints nearby.

Attention

• Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

• Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.

• Keep static-sensitive parts in their static-protective packages until installation to prevent exposure to static electricity. Handle the parts with an electrostatic-discharge wrist strap or other grounding systems. Place the parts on a static-protective surface.

Prepare the following screwdrivers to ensure you can install and remove the corresponding screws properly.

Torque screwdriver type list	Screw Type
Torx T30 head screwdriver	Torx T30 screw
#2 Phillips screwdriver	#2 Phillips screw

Procedure

1. To remove the quick connect plugs from the manifolds, see Remove the manifold (in-rack system) or Remove the manifold (in-row system).
2. To remove the server from the rack, see Remove the server from the rack (friction rails) and Remove the server from the rack (slide rails).
3. Remove the top cover. See Remove the top cover.
4. Remove the memory module. See Remove a memory module.
5. Disconnect the leakage detection sensor module cable of the Compute Complex Neptune Core Module from the connector on the system board assembly.
   Attention

   To avoid damaging the system board assembly, make sure to follow the instructions in Internal cable routing when disconnecting cables from the system board assembly.
6. Open the hose holder cover.
   Figure 1. Opening the holder cover
   
   
   1. Loosen the thumbscrew on the cover.
   2. Open the cover.
7. Disengage the hoses and leakage detection sensor module.
   Figure 2. Disengaging the hoses and module
   
   
   1. Push the holder latches to both sides to unlock the module.
   2. Disengage the hoses and module from the hose holder.
8. Loosen the six screws and eight Torx T30 nuts on the Compute Complex Neptune Core Module.
   Figure 3. Loosening screws
   
   
9. Install the shipping tray on the module.
   Figure 4. Installing the shipping tray
   
   
   1. Install the shipping tray on the module.
   2. Tighten the screws to lock the shipping tray.
10. Disengage the module from the processor board.
    Figure 5. Removing the module
    
    
    1. Rotate the anti-tilt wire bails inward.
    2. Carefully lift the module from the processor sockets. If the module cannot be fully lifted out of the socket, further loosen the Torx T30 nuts and try lifting the module again.
11. Separate the processor from the module. Refer to Separate the processor from carrier and heat sink.
12. If there is any old thermal grease on the processors and the cold plates, gently clean the processors and the cold plates with an alcohol cleaning pad.
13. Remove the hose holder.
    Figure 6. Removing the holder
    
    
    1. Loosen the screws that locks the holder to the system I/O board and processor board.
    2. Lift the holder out of the chassis.
    3. Re-install the screw back to the system I/O board and processor board.