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FusionServer Pro Rack Server iBMC Alarm Handling 30

This document describes iBMC alarms in terms of the meaning, impact on the system, possible causes, and handling suggestions.
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ALM-0x100000B7 Soft-Start Circuit Undervoltage (Mainboard, Major Alarm)

ALM-0x100000B7 Soft-Start Circuit Undervoltage (Mainboard, Major Alarm)


Alarm message:

Soft-start circuit voltage at arg1 detection point is undervoltage (PN: arg2).

From iBMC V316, the CPU and disk alarms will also include the SN and part umber and the mainboard and memory alarms will also include the part number.

This alarm is generated when the voltage at the detection point arg1 of the soft-start circuit is lower than the minor threshold.

Alarm object: mainboard


Alarm ID Alarm Severity Auto Clear





Name Meaning

Voltage detection point. For example, 12V, or a value from 12V_1 to 12V_5.


Part number.

Impact on the System

The system may be powered off.

Possible Causes

The soft-start circuit on the mainboard is faulty.


  1. Replace the mainboard. Then, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 2.

  2. Contact Huawei technical support.
Updated: 2019-08-05

Document ID: EDOC1000054724

Views: 332712

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