20004 Board Fault-Abnormal Voltage

Description

This alarm is reported when the voltage of the board is abnormal.

Attribute

Alarm ID Alarm Severity Alarm Type
20004 Major Fault

Parameters

ID Name Meaning
1 Subrack No.

Subrack No.
2 Slot No.

Slot No.
3 Cpu No.

CPU No.
4 Voltage Type

Type of the voltage that triggers an alarm
5 Voltage

Value of the voltage when the alarm occurs
6 The low threshold

Lower threshold of the Abnormal Voltage alarm (unit: mV)
7 The high threshold

Upper threshold of the Abnormal Voltage alarm (unit: mV)
8 Alarm Attribute

0=Normal, Alarms period are longer than the Transient Threshold.

1=Transient Count, The times and the period of the alarms whose periods are shorter than the Transient Threshold are summed up. If the sum result is longer than the Alarm Occurrence Period Threshold or Alarm Occurrence Times Threshold, an alarm so called Transient Count Alarm is triggered. Because Transient Count Alarm is based on accumulative result, the recovery of the alarm may occur at least one Summing Cycle later. The Summing Cycle can be query by MML "LST STATSLDWIN".

Impact on the System

The service provided by this board might be affected or interrupted.

System Actions

  • Handling of the active board in the active/standby operation mode: Perform the switchover if the standby is ready for the operation.
  • Handling of the standby board in the active/standby operation mode: None.
  • Handling of the board in the Independent operation mode: None.

Possible Causes

The board is faulty.

Procedure

  1. Replace the faulty board and wait until the new board is successfully loaded and reset. Check whether the alarm is cleared.

    Y => The alarm is cleared. The alarm handling is complete.

    N => The alarm persists. Please contact Huawei Customer Service Center.

Parent topic: BSC Alarm Reference
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