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CH222 Compute Node V100R001 User Guide 18

This document describes the appearance, functions, structure, and installation, removal, and configuration methods of the CH222 compute node.
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Removing a BIOS Battery

Removing a BIOS Battery

If a BIOS battery is faulty or is low in power, remove it before replacing it with a new one.


Remove a BIOS battery in either of the following scenarios:

  • A BIOS battery is faulty.
  • A BIOS battery is low in power.

Figure 5-48 shows the position of the BIOS battery in the CH222.

Figure 5-48 Position of the BIOS battery




Data preparation is not required for this operation.


  • Electrostatic discharge (ESD) gloves
  • Packing materials, for example, ESD bag
  • M3 phillips screwdriver.


  1. Press and hold down the spring on a RAID controller card connector and remove the MiniSAS cable from the RAID controller card. See steps (1) and (2) in Figure 5-49.

    Figure 5-49 Removing a Mini-SAS cable

  2. Remove the bridge board between the hard disk drawer and the expansion board, as shown in Figure 5-50.

    Figure 5-50 Removing the bridge board

  3. Only personnel authorized by Huawei and Huawei technical support personnel can remove the mainboard.

    Use the Phillips screw to remove the three captive screw on the CH222 mainboard. See step (1) in Figure 5-51.

    Figure 5-51 Removing the mainboard

  4. Pull one fourth of the CH222 mainboard out of the backend until the BIOS battery is exposed. See step (2) in Figure 5-51.
  5. Take out the BIOS battery in the arrow direction.

    Figure 5-52 Removing a BIOS battery

  6. Place the removed BIOS battery in an ESD bag.
Updated: 2019-08-16

Document ID: EDOC1000018075

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