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FusionServer Pro E9000 Server iBMC (Earlier than V250) Alarm Handling 02

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ALM-0149FFFF/0149FF02 Above Upper Major Threshold (MOS Volt Drop)

ALM-0149FFFF/0149FF02 Above Upper Major Threshold (MOS Volt Drop)


Alarm message:

Above upper major threshold

This alarm is generated when the voltage drop of the MOS-FET on the mainboard is higher than the major alarm upper threshold.

This alarm is generated by the following sensor:

  • MOS Volt Drop


Alarm ID

Alarm Severity

Auto Clear

iBMC: 0149FFFF

MM: 0149FF02







Time when an alarm is generated.


Name of the sensor that generates an alarm.


Details about an alarm.


Severity of an alarm.

Event Code

Event code that corresponds to an alarm.

Impact on the System

The power supply to the mainboard may be abnormal, which may cause the system to operate abnormally.

Possible Causes

  • The mainboard is faulty.


  1. Remove the board to forcibly power off the mainboard, and then install it to power it on. Check whether the alarm is cleared.

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

  2. Replace the mainboard. Then check whether the alarm is cleared.

    For details about how to replace the mainboard, see the server user guide.

    • If yes, no further action is required.
    • If no, go to Step 3.

  3. Contact Huawei technical support for help.
Updated: 2019-11-19

Document ID: EDOC1100035007

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