“error condition follows the defective NIC rather than the known-good path” addresses fault isolation should distinguish adapter card from external cable and switch, but the current hardware or infrastructure issue is fault identification must use physical fan-zone mapping instead of a generic fan alert. The option “targeted zone inspection finds the defective fan assembly” is more directly tied to the required outcome.

“slot-level diagnostics identify the defective component before replacement” addresses the failure is localized to the missing GPU or its PCIe and power path, but the current hardware or infrastructure issue is fault identification must use physical fan-zone mapping instead of a generic fan alert. The option “targeted zone inspection finds the defective fan assembly” is more directly tied to the required outcome.

“live PCIe device ID maps unambiguously to the chassis service bay” addresses service identification lacks a validated PCIe-to-chassis location record, but the current hardware or infrastructure issue is fault identification must use physical fan-zone mapping instead of a generic fan alert. The option “targeted zone inspection finds the defective fan assembly” is more directly tied to the required outcome.

“inspect both AC input and DC output under controlled load” addresses power symptoms could arise from internal module output or upstream management controls, but the current hardware or infrastructure issue is device-specific memory faults can be isolated by per-GPU diagnostics. The option “run controlled per-GPU diagnostic and inspect its ECC counters” is more directly tied to the required outcome.

Useful for the suspected failure may be the feed or cable rather than the PSU itself, but it does not remove the specific condition: device-specific memory faults can be isolated by per-GPU diagnostics.

“check swap-qualified optics and receive power against a known-good link” addresses external optics and cable faults have not been ruled out before card failure diagnosis, but the current hardware or infrastructure issue is device-specific memory faults can be isolated by per-GPU diagnostics. The option “run controlled per-GPU diagnostic and inspect its ECC counters” is more directly tied to the required outcome.

“defective transceiver or path is isolated while NIC hardware passes tests” addresses external optics and cable faults have not been ruled out before card failure diagnosis, but the current hardware or infrastructure issue is device-specific memory faults can be isolated by per-GPU diagnostics. The option “repeated diagnostic failures isolate one GPU UUID and bus ID” is more directly tied to the required outcome.

“slot-level diagnostics identify the defective component before replacement” addresses the failure is localized to the missing GPU or its PCIe and power path, but the current hardware or infrastructure issue is device-specific memory faults can be isolated by per-GPU diagnostics. The option “repeated diagnostic failures isolate one GPU UUID and bus ID” is more directly tied to the required outcome.

“input fault follows the cable or is isolated to the correct PSU” addresses the suspected failure may be the feed or cable rather than the PSU itself, but the current hardware or infrastructure issue is device-specific memory faults can be isolated by per-GPU diagnostics. The option “repeated diagnostic failures isolate one GPU UUID and bus ID” is more directly tied to the required outcome.

Useful for the suspected failure may be the feed or cable rather than the PSU itself, but it does not remove the specific condition: power symptoms could arise from internal module output or upstream management controls.

“run controlled per-GPU diagnostic and inspect its ECC counters” addresses device-specific memory faults can be isolated by per-GPU diagnostics, but the current hardware or infrastructure issue is power symptoms could arise from internal module output or upstream management controls. The option “inspect both AC input and DC output under controlled load” is more directly tied to the required outcome.

“compare PCIe enumeration slot power and GPU UUIDs to isolate the physical board” addresses the failure is localized to the missing GPU or its PCIe and power path, but the current hardware or infrastructure issue is power symptoms could arise from internal module output or upstream management controls. The option “inspect both AC input and DC output under controlled load” is more directly tied to the required outcome.

“slot-level diagnostics identify the defective component before replacement” addresses the failure is localized to the missing GPU or its PCIe and power path, but the current hardware or infrastructure issue is power symptoms could arise from internal module output or upstream management controls. The option “tests identify the failing electrical stage instead of replacing unrelated hardware” is more directly tied to the required outcome.

“error condition follows the defective NIC rather than the known-good path” addresses fault isolation should distinguish adapter card from external cable and switch, but the current hardware or infrastructure issue is power symptoms could arise from internal module output or upstream management controls. The option “tests identify the failing electrical stage instead of replacing unrelated hardware” is more directly tied to the required outcome.

“input fault follows the cable or is isolated to the correct PSU” addresses the suspected failure may be the feed or cable rather than the PSU itself, but the current hardware or infrastructure issue is power symptoms could arise from internal module output or upstream management controls. The option “tests identify the failing electrical stage instead of replacing unrelated hardware” is more directly tied to the required outcome.

“perform controlled port and card substitution with preserved cable conditions” addresses fault isolation should distinguish adapter card from external cable and switch, but the current hardware or infrastructure issue is service identification lacks a validated PCIe-to-chassis location record. The option “use platform service topology and serial mapping to locate the reported card” is more directly tied to the required outcome.

Useful for the failure is localized to the missing GPU or its PCIe and power path, but it does not remove the specific condition: service identification lacks a validated PCIe-to-chassis location record.

“inspect both AC input and DC output under controlled load” addresses power symptoms could arise from internal module output or upstream management controls, but the current hardware or infrastructure issue is service identification lacks a validated PCIe-to-chassis location record. The option “use platform service topology and serial mapping to locate the reported card” is more directly tied to the required outcome.

“targeted zone inspection finds the defective fan assembly” addresses fault identification must use physical fan-zone mapping instead of a generic fan alert, but the current hardware or infrastructure issue is service identification lacks a validated PCIe-to-chassis location record. The option “live PCIe device ID maps unambiguously to the chassis service bay” is more directly tied to the required outcome.

“slot-level diagnostics identify the defective component before replacement” addresses the failure is localized to the missing GPU or its PCIe and power path, but the current hardware or infrastructure issue is service identification lacks a validated PCIe-to-chassis location record. The option “live PCIe device ID maps unambiguously to the chassis service bay” is more directly tied to the required outcome.

“input fault follows the cable or is isolated to the correct PSU” addresses the suspected failure may be the feed or cable rather than the PSU itself, but the current hardware or infrastructure issue is service identification lacks a validated PCIe-to-chassis location record. The option “live PCIe device ID maps unambiguously to the chassis service bay” is more directly tied to the required outcome.

Useful for the failure is localized to the missing GPU or its PCIe and power path, but it does not remove the specific condition: external optics and cable faults have not been ruled out before card failure diagnosis.

“perform controlled port and card substitution with preserved cable conditions” addresses fault isolation should distinguish adapter card from external cable and switch, but the current hardware or infrastructure issue is external optics and cable faults have not been ruled out before card failure diagnosis. The option “check swap-qualified optics and receive power against a known-good link” is more directly tied to the required outcome.

“swap only controlled feed paths and inspect PSU input telemetry before condemning module” addresses the suspected failure may be the feed or cable rather than the PSU itself, but the current hardware or infrastructure issue is external optics and cable faults have not been ruled out before card failure diagnosis. The option “check swap-qualified optics and receive power against a known-good link” is more directly tied to the required outcome.

“error condition follows the defective NIC rather than the known-good path” addresses fault isolation should distinguish adapter card from external cable and switch, but the current hardware or infrastructure issue is external optics and cable faults have not been ruled out before card failure diagnosis. The option “defective transceiver or path is isolated while NIC hardware passes tests” is more directly tied to the required outcome.

“input fault follows the cable or is isolated to the correct PSU” addresses the suspected failure may be the feed or cable rather than the PSU itself, but the current hardware or infrastructure issue is external optics and cable faults have not been ruled out before card failure diagnosis. The option “defective transceiver or path is isolated while NIC hardware passes tests” is more directly tied to the required outcome.

“targeted zone inspection finds the defective fan assembly” addresses fault identification must use physical fan-zone mapping instead of a generic fan alert, but the current hardware or infrastructure issue is external optics and cable faults have not been ruled out before card failure diagnosis. The option “defective transceiver or path is isolated while NIC hardware passes tests” is more directly tied to the required outcome.

“confirm supported PSU part and firmware revision after installation” addresses replacement component qualification includes its firmware and inventory state, but the current hardware or infrastructure issue is hot-swap maintenance did not confirm remaining power capacity. The option “check surviving feed health and follow qualified PSU replacement procedure” is more directly tied to the required outcome.

Useful for electrostatic handling controls were omitted during replacement, but it does not remove the specific condition: hot-swap maintenance did not confirm remaining power capacity.

“apply qualified DPU firmware mode and port configuration during reinstallation” addresses physical component replacement omitted its configured software and networking role, but the current hardware or infrastructure issue is hot-swap maintenance did not confirm remaining power capacity. The option “check surviving feed health and follow qualified PSU replacement procedure” is more directly tied to the required outcome.

“power redundancy and firmware inventory meet approved platform baseline” addresses replacement component qualification includes its firmware and inventory state, but the current hardware or infrastructure issue is hot-swap maintenance did not confirm remaining power capacity. The option “node remains within power envelope during removal and both PSU statuses recover” is more directly tied to the required outcome.

“BOM verification and full-load diagnostics pass on the replacement” addresses mechanical electrical and thermal qualification are not interchangeable across models, but the current hardware or infrastructure issue is hot-swap maintenance did not confirm remaining power capacity. The option “node remains within power envelope during removal and both PSU statuses recover” is more directly tied to the required outcome.

“BlueField host and network-offload tests pass and inventory matches the new card” addresses physical component replacement omitted its configured software and networking role, but the current hardware or infrastructure issue is hot-swap maintenance did not confirm remaining power capacity. The option “node remains within power envelope during removal and both PSU statuses recover” is more directly tied to the required outcome.