Motherboard Tray Battery Replacement

Motherboard Tray Battery Replacement Overview

This is a high-level overview of the procedure to replace the DGX-2 System motherboard tray battery.
  1. Get a replacement battery - type CR2032.
  2. Shut down the system.
  3. Label all motherboad cables and unplug them.
  4. Remove the motherboard tray, place on a solid, flat surface.
  5. Remove the left PCI riser card.
  6. Use the reference diagram on the lid of the motherboard tray to identify the battery placement.
  7. Replace the dead battery with the new one.
  8. Replace the left PCI riser card.
  9. Insert the motherboard tray into the system.
  10. Plug in all cables using the labels as a reference.
  11. Apply power to the system and then boot the system.
  12. Verify the date and time on the system BIOS.

Replacing the Motherboard Tray Battery

CAUTION: Static Sensitive Devices: - Be sure to observe best practices for electrostatic discharge (ESD) protection. This includes making sure personnel and equipment are connected to a common ground, such as by wearing a wrist strap connected to the chassis ground, and placing components on static-free work surfaces.

  1. Power down the system.
  2. Label all cables connected to the motherboard tray for easy identification when reconnecting.
  3. Unplug the cables.
  4. Remove the motherboard tray.

    Refer to the instructions in the section Removing the Motherboard Tray.

  5. Remove the left PCI card riser by turning the left black screw.

  6. Remove left PCI riser card from the motherboard tray.

  7. Replace the battery.
    1. Identify the battery receptacle.

    2. Remove the battery.
    3. Make sure the replacement is a CR2032 3V lithium battery, then install the new battery with the + side up.
  8. Replace left PCI riser card on the motherboard tray.

  9. Tighten the black screw on the left PCI card riser.

  10. Replace the motherboard tray.

    Refer to the instructions in the section Installing the Motherboard Tray.

  11. Connect all the cables to the motherboard tray.
  12. Apply power to the system and then log in.
  13. Restore the date on the system.
    1. Set the date.
      $ sudo date [MMDDhhmm[[CC]YY][.ss]]
    2. Sync the date and time to the hardware real time clock.
      $ sudo hwclock -w
    3. Reset the BMC
      $ sudo ipmitool mc reset cold