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E9000 Server V100R001 HMM Alarm Handling 19

This document describes E9000 server alarms in terms of the meaning, impact on the system, possible causes, and solutions.
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Slot: Soft-Start Circuit Fault (Major, Mos Major Error)

Slot: Soft-Start Circuit Fault (Major, Mos Major Error)


Alarm message:

Transition to Critical from less severe


Soft-start circuit critical fault.

This alarm is generated when the PG signal of the soft-start circuit encounters an error for the fifth time, or when two or more MOSFET temperature detection points simultaneously detect overtemperature for the fifth time.

This alarm is generated by the following sensor:

Mos Major Error


Alarm ID

Alarm Severity

Auto Clear




Impact on the System

The soft-start circuit fault on a board may cause the board to power off and interrupt services.

Possible Causes

The soft-start circuit of the board is faulty.


  1. Replace the mainboard and then check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 2.

  2. On the HMM WebUI, choose System Management > Information Collection, and collect logs.
  3. Contact Huawei technical support.
Updated: 2018-08-16

Document ID: EDOC1000015902

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