Replacing The M.2 Nvme Riser Assembly - Nvidia DGX A100 Service Manual

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The DGX A100 cannot be booted.
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The boot drives cannot be seen from the SBIOS.
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The system indicates that the boot drives are not available when booting from the ISO
image.
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Loss of communication with the M.2 boot drives.
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The M.2 riser assembly was damaged.
10.3. Replacing the M.2 NVMe Riser
Assembly
Before attempting to replace the M.2 NVMe riser assembly, be sure you have obtained the
replacement assembly and have saved the packaging for use when returning the faulty riser
assembly.
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.
You will likely need to use the BMC console.
2. Label all cables connected to the motherboard tray for easy identification when
reconnecting.
3. Remove the motherboard tray.
Refer to the instructions in the section
4. Remove the M.2 riser card from the motherboard tray by lifting the riser assembly.
NVIDIA DGX A100 System
M.2 Boot Drive Riser Assembly Replacement
Accessing the Motherboard Tray.
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