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 processor board, and set them aside on a static-protective surface for reinstallation.

• 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. See Remove the server from rack.
   6. Remove the top cover. See Remove the top cover.
   7. If your server comes with an air baffle, a middle cage, or a rear cage, remove it first.

      • Remove the air baffle

      • Remove the middle drive cage and drive backplanes

      • Rear drive backplane and drive cage replacement

   8. Record where the cables are connected to the system board assembly; then, disconnect all the cables.
   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 the system fan cage

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

      • Remove a heat sink

      • Remove a processor

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

      • Remove a rear riser assembly

      • Remove the rear OCP module

   10. Pull out the power supply units slightly. Ensure that they are disconnected from the system board assembly.
2. Remove the system board assembly.
   Figure 1. Removing the system board assembly
   

   

   
   
   1. Lift the two lift handles at the same time.
   2. Slide the system board assembly towards the front of the chassis until it stops.
   3. Tilt and 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.
4. (Optional) If you are going to replace the system I/O board, remove the firmware and RoT security module from the system I/O board. See Remove the firmware and RoT security module. If you are going to replace the processor board, go to the next step directly.
5. (Optional) Remove the MicroSD card. See Remove the MicroSD card.
6. Separate the system I/O board from the processor board.
   Note

   To prevent the contact of the system I/O board from damage, pinch and lift the plunger on the system I/O board upward a little and pull out the system I/O board outward. During the entire pulling action, ensure that the system I/O board remains as horizontal as possible.

   Figure 2. Separating the system I/O board from the processor board
   

   

   
   
   1. Remove the screws that secure the system I/O board.
   2. Lift and hold the rear lift handle and slide the system I/O board towards the rear to disengage it from the processor board.