20324 GGCU Failure-Abnormal Local Oscillation Signal

Description

The local oscillator signal (crystal oscillator chip) of GGCU board is faulty.

Attribute

Alarm ID Alarm Severity Alarm Type
20324 Major Fault

Parameters

ID Name Meaning
1 Subrack No.

Subrack No.
2 Slot No.

Slot No.
3 Cpu No.

CPU No.
4 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

None.

System Actions

Reset the board.

Possible Causes

The constant-temperature crystal oscillator in the GGCU is faulty, resulting the abnormal output of the clock signal.

Procedure

  1. Wait until the board is successfully loaded and restarted. Check whether the alarm is cleared.

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

    N => The alarm persists. Go to 2.

  2. Replace the board and wait until the board is successfully loaded and restarted. 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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