| Sensor Name | Description | Resolution |
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System voltage has exceeded its normal operating range. Typically, this issue is caused by a failure in one of the power supplies but may also be caused by a short circuit on baseboard, SATA drives, fans, or PCIe cards.
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Try these steps to isolate the source of the voltage excursion event:
- Ensure all cables are connected correctly.
- Check connections on the fans and SATA drives.
- Remove and inspect all potentially impacted components. Place components back in one at a time to attempt to isolate failure.
- Inspect for contamination in connectors (DIMMs, PCIe*).
- If the issue remains, attempt to re-seat power supplies. Replace power supplies if re-seating does not solve problem.
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- P1V8 PCH
- P105 PCH AUX
- PVNN PCH AUX
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Typically a baseboard failure, one or more of the voltages on the baseboard is outside of its normal operating range.
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In order, try these steps to isolate the source of the Voltage Excursion Event:
- Remove all but minimum components for operation and check sensor.
- If error remains, replace baseboard.
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System has experienced a Baseboard CMOS Battery (BB +3.3V Vbat) voltage excursion, typically caused by contamination on the surface of the CMOS battery.
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In order, try these steps:
- Remove battery, wipe with alcohol to remove potential contamination, reinstall battery, and re-check batter voltage is 2.95 V or higher.
- Replace the CMOS battery. Any battery of type CR2032 can be used.
- If error remains, replace the baseboard.
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- PSU Input Power
- PSU Out Current
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Indicated power supply is drawing too much power from source. Possible reasons:
- Redundant power supplies may not be powered.
- Power supplies may be underpowered for actual system load.
- Power supplies are operating on low line (90-120 V) versus high line (200-240 V),
- Short circuit present in server.
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Perform the following steps:
- If power supply LEDs are solid green that indicates a functioning but potentially underrated power supply for system load.
- Verify the power budget is within the specified range using the Power Calculator.
- If power supply LEDs are flashing green reseat power supply and verify AC power cord connection.
- If power supply LEDs are solid amber that indicates a power supply fault - replace power supply.
- If power supply LEDs are flashing amber then verify AC power cord connection.
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- PVCCD HV CPU
- PVCCFA EHV CPU
- PVCCINFAON CPU
- PVCCIN CPU
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Processor voltage has exceeded its normal operating range. Typically, this issue is caused by a failure in one of the power supplies but may also be caused by a short circuit on baseboard, SATA drives, fans, or PCIe cards.
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If the fault is asserted then de-asserted immediately after take no action but continue to monitor.
Otherwise:
- Ensure the processor is seated properly and secured with the correct torque value.
- Cross test the processors. If the issue remains with the processor socket, replace the motherboard, else replace the processor.
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- TCC CPU
- CPU VR Temp
- DTS CPU
- Margin CPU
- DIMM Mgn
- Riser Temp
- Exit Air Temp
- Front Panel Temp
- BB M2 Temp
- BB OCP Temp
- BB P0/P1 VR Temp
- BB Riser2 Temp
- HSBP Temp
- PSU Temperature
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The temperature sensor has exceeded its normal operating range.
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- Check for clean and unobstructed airflow into and out of the chassis.
- Ensure there are no fan failures.
- Ensure the air/liquid used to cool the system is within the thermal specification for the system.
- Ensure that cables are not obstructing the air flow and that they are routed correctly inside the chassis. For details on cable routing check the Configuration Guide.
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The NVMe temperature sensor has exceeded its normal operating range.
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- Check for clean and unobstructed airflow into and out of the chassis.
- Ensure there are no fan failures.
- Assess if neighboring NVMe drives have also gone high to help distinguish between workload or mechanical event sources.
- If the system supports it, ensure that the Air-Ducts, Drive Blanks are installed in the empty slots.
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