Hardware Model Specification

NVIDIA HGX H100 8-GPU Board Diagnostics

Classification: Data Center & HPC Infrastructure Equipment

Hardware operational fault codes, protection alarms, LED blink sequences, and step-by-step diagnostic fixes for the NVIDIA HGX H100 8-GPU Board.

1 Documented Faults • Full Multimeter & Safety Isolation Procedures

Indexed Fault Codes for HGX H100 8-GPU Board

Step-by-step resolution manuals and root cause matrices

1 Codes

CODE SXid 119 Severity: Critical Difficulty: Advanced

NVSwitch Fabric Link Down Uncorrectable

An uncorrectable physical layer or data link layer error occurred on the NVLink 4.0 interconnect between an H100 Tensor Core GPU and an on-board NVSwitch 3 ASIC, triggering a fatal link-down event and hardware isolation.

⏱ 45-90 Mins Troubleshoot Now →