Remove the processor board

Follow instructions in this section to remove the processor board.

About this task

Important

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

• When removing the memory modules, label the slot number on each memory module, remove all the memory modules from the system-board assembly, and set them aside on a static-protective surface for reinstallation.

• When the server has an L2AM module (Closed loop cooling module) installed, you must apply for a handle (L2AM heat sink bracket) first if you need to install or remove the processor board, I/O board, processor and PIB board. However, while replacing the old L2AM module with a new one, you do not need to apply for a handle (L2AM heat sink bracket) as the new L2AM module contains it.

• When disconnecting cables, make a list of each cable and record the connectors the cable is connected to, and use the record as a cabling checklist after installing the new system board assembly.

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.

• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system.

CAUTION

Hazardous moving parts. Keep fingers and other body parts away.

CAUTION

The heat sinks and processors might be very hot. Turn off the server and wait several minutes to let the server cool before removing the server cover.

S002

CAUTION

The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.

Procedure

1. Make preparation for this task.
   1. Record all system configuration information, such as Lenovo XClarity Controller IP addresses, vital product data, and the machine type, model number, serial number, Universally Unique Identifier, and asset tag of the server.
   2. Save the system configuration to an external device with Lenovo XClarity Essentials.
   3. Save the system event log to external media.
   4. Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.
   5. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top cover, or remove the server from the rack.
   6. Remove the top cover. See Remove the top cover.
   7. If your server comes with a rear cage, remove it first. See Remove the rear 2.5-inch drive backplane.
   8. Record where the cables are connected to the system board assembly; then, disconnect all the cables.
      Note

      • If you need to disconnect cables from the system board assembly, disengage all latches or release tabs on cable connectors first. Failing to release the tab before removing the cables will damage the cable sockets on the system board assembly. Any damage to the cable sockets might require replacing the system board assembly.

      • The connectors on your system board assembly might look different from those in the illustration, but the removal procedure is the same.

        1. Press the release tab to release the connector.

        2. Disengage the connector from the cable socket.

      Figure 1. Disconnecting cables from the system board assembly
      

      

      
      
      

      

      
      
   9. Remove any of the following components that are installed on the system board assembly and put them in a safe, static-protective place.

      • Remove a system fan

      • Remove a memory module (for processor board replacement only)

      • Processor and heat sink replacement (Trained technicians only)

      • Remove the CMOS battery (for processor board replacement only)

      • Remove a rear riser card

      • Remove the rear OCP module

   10. Pull out the power supplies slightly. Ensure that they are disconnected from the system board assembly.
2. Remove the system board assembly.
   Figure 2. System board assembly removal
   

   

   
   
   1. Hold the lift handle 1 and lift the release pin 2 at the same time and slide the system board toward the front of the server.
   2. Lift the system board assembly out of the chassis.
3. Remove the fan board and the PIB board from the processor board. See Remove the fan board and Remove the PIB board.
4. (Optional) Remove the firmware and RoT security module from the system I/O board. See Remove the firmware and RoT security module.
5. (Optional) Remove the MicroSD card. See Remove the MicroSD card.
6. Remove the system I/O board. See Remove the system I/O board.