Removing the Mainboard

Procedure

1. Record the firmware (iBMC, BIOS, and CPLD) versions of the mainboard to be replaced.
   • For iBMC V549 and earlier versions, choose Information > System Info > Product Info on the iBMC WebUI. For iBMC V600 and later versions, choose System > System Info > Product Info.
   • On the iBMC CLI, run the ipmcget -d version command to obtain the information.

2. Check the iBMC and BIOS configurations.

   After the mainboard is replaced, the original iBMC or BIOS configuration will be lost. If the current iBMC or BIOS parameters have been adjusted based on service scenarios, ensure that the parameter configuration is the same as that before the mainboard is replaced to ensure that services are not affected after the mainboard is replaced.

3. Export the iBMC or BIOS configuration files.
   • The iBMC supports import and export of configuration files from version 2.32.
   • After replacing the mainboard, import the iBMC and BIOS configuration files that are exported from the iBMC. However, the exported configuration files do not contain password information. You need to manually configure the password for the iBMC user. For iBMC V549 and earlier versions, see "Import/Export" in the Atlas 800 Inference Server iBMC User Guide (Model 3010). For iBMC V600 and later versions, see "Configuration Update" in the Atlas 800 Inference Server iBMC User Guide (Model 3010).
   • The iBMC and BIOS configuration files exported from the iBMC contain the configuration list. For details, see "Configuration File Description" in Atlas 800 Inference Server iBMC User Guide (Model 3010).
   • If the iBMC and BIOS configuration files are not exported before the mainboard is replaced, manually configure the iBMC and BIOS data after replacing the mainboard.

4. Power off the server.

   For details, see Power-Off Procedure.

5. Remove the power cables from the PSUs.

   For details, see Removing PSU Cables.

6. Remove the server.

   For details, see Removing the Server.

7. Place the server on the ESD workstation.
8. Remove the chassis cover.

   For details, see Removing the Chassis Cover.

9. Determine the position of the mainboard.
10. Remove PSUs.

    For details, see Removing a PSU.

11. Remove the PCIe riser modules.

    For details, see Removing a PCIe Riser Module.

12. Removing the baffle plate from the ports.
    1. Loosen the screws that secure the baffle plate. See (1) in Figure 8-184.
    2. Tilting the left side of the baffle plate, remove the baffle plate. See (2) in Figure 8-184.
    Figure 8-184 Removing the baffle plate from the optical or electrical ports
    

13. Remove the FlexIO card if there is any.

    For details, see Removing a FlexIO Card.

14. Remove the rear drive module.

    For details, see Removing the Rear Drive Module.

15. Remove the TPM or TCM.

    For details, see Removing the TPM/TCM.

16. Remove the built-in USB flash drive.

    For details, see Removing a Built-in USB Flash Drive.

17. Remove the screw-in RAID controller card.

    For details, see Removing the Screw-in RAID Controller Card.

18. Remove the supercapacitor if there is any.

    For details, see Removing the Supercapacitor.

19. Remove the air duct or built-in drive module.

    For details, see Removing the Air Duct or Removing the Built-in Drive Module.

20. Remove the battery.

    For details, see Removing the Battery.

21. Remove all fan modules.

    For details, see Removing a Fan Module.

22. Remove the fan module bracket.
    1. Press the latches on both sides of the fan module bracket and lift the fan module bracket vertically. See (1) and (2) in Figure 8-185.
    2. Remove the other fan module bracket in the same way.
    Figure 8-185 Removing a fan module bracket
    

23. Remove all cables from the mainboard.

    For details, see Internal Cabling.

24. Remove memory modules.

    For details, see Removing a DIMM.

25. Remove processors.

    For details, see Removing a Processor.

26. Remove cable organizers.

    Remove the cable organizers from the left and right sides of the chassis. When removing a cable organizer, hold the latch in arrow direction (1) and push the cable organizer in arrow direction (2).

    Figure 8-186 Removing a cable organizer
    

27. Remove the mainboard.
    1. Loosen the screw that secures the mainboard. See (1) in Figure 8-187.
    2. Holding the handles (shown in red circles), push the mainboard in the arrow direction as far as it will go. See (2) in Figure 8-187.

       Do not lift the mainboard by holding any protruding part on the mainboard. Otherwise, the components on the mainboard may be damaged.

       Figure 8-187 Removing the mainboard (1)
       
    3. Tilt the mainboard 10° to 15° in the arrow direction. See (1) in Figure 8-188.
    4. Lift the mainboard. See (2) in Figure 8-188.
    Figure 8-188 Removing the mainboard (2)
    

28. Place the removed mainboard and components in different ESD bags.
    • If the removed component is no longer used, pack it again using the original packaging materials and store it properly.
    • Before placing the mainboard into an ESD bag, ensure that the processor sockets are installed with covers.
    • Place only one component in an ESD bag.