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CH225 V3 Compute Node V100R001 User Guide 07

This document describes the appearance, functions, and structure of the CH225 V3 storage expansion compute node (CH225 V3 for short), and methods of installing, removing, and configuring the CH225 V3.
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Removing the Mainboard and Compute Node Case

Removing the Mainboard and Compute Node Case

This topic describes how to remove a mainboard and compute node case.


Remove all components of the faulty mainboard.

Figure 8-86 Positions of the mainboard and the compute node case

Replace the mainboard and compute node case together.



  • You have read Safety Instructions.
  • If the mainboard needs to be replaced, record the following information:
    • Record the version numbers of the iBMC, BIOS, and CPLD. For details, see Checking the CH225 V3.
    • Record the BIOS configuration if it is customized.
    • Record the compute node IP address and iBMC configurations.

    iBMC configurations may involve alarms, power control, power, energy saving, local users, LDAP, security hardening, networks, services, boot options, SSL certificates, and remote control. The configuration query method varies depending on the iBMC version. For details, see E9000 Server Compute Node iBMC User Guide.

  • If a compute node is installed in the E9000 chassis, remove it by referring to Removing a CH225 V3.
  • Place the compute node carefully on an electrostatic discharge (ESD) surface.


Data preparation is not required for this operation.


  • Electrostatic discharge (ESD) wrist strap.
  • M3 Phillips screwdriver.
  • Packing materials, for example, ESD bag.


  1. Removing a Hard Disk. For details, see Removing a Hard Disk.
  2. Removing the Cover. For details, see Removing the Cover.
  3. Removing a DIMM and an Air Duct. For details, see Removing a DIMM and Air Duct.
  4. Removing a CPU and heat sink. For details, see Removing a CPU.
  5. Removing a Supercapacitor. For details, see Removing the Supercapacitor.
  6. Removing a RAID Controller Card. For details, see Removing the RAID Controller Card.
  7. Removing the mezzanine cards. For details, see Removing a Mezz Card.
  8. Removing a TPM. For details, see Removing the TPM.
  9. Removing a USB Flash Drive. For details, see Removing the USB Flash Drive.
  10. Removing a microSD Card. For details, see Removing a microSD Card.
  11. Removing a SATA DOM. For details, see Removing a SATADOM.
  12. Place the removed mainboard and compute node case in an ESD bag.

    Before placing the mainboard into an ESD bag, check that a protective cover is installed on a vacant CPU socket. For details about how to install a protective cover, see Removing a CPU.

Updated: 2019-07-10

Document ID: EDOC1000095351

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