ALM-5076 MPT-to-Board Clock Abnormal

Description

This alarm is reported upon an error in the clock signals received from an MPT.

Attribute

Alarm ID Alarm Severity Alarm Type
5076 Major Fault

Parameters

ID Name Meaning
1 Site No.

Number of the site where the faulty board or module is located

Value range: 0-2047
2 Board Type

Number of the type which the faulty board belongs to.

87:GTMU
3 Board No.

Number of the fault board

0:GTMU
4 PassNo

Number of the passage where the faulty board is located.
5 SubLink No.

Alarm sub-category number

0: 4x clock abnormal

1: 32x clock abnormal

2: BFN abnormal
6 Cell Index

Index of the cell where the board or module is located

0-2047: Cell index of the faulty cell in the data configuration

65535: None
7 Site Type

Type of the site where the faulty board is located.

17:DBS3900 GSM;

18:BTS3900 GSM;

19:BTS3900A GSM;
8 RackNo

Number of the rack where the faulty board is located.
9 BoxNo

Number of the subrack where the faulty board is located.
10 SlotNo

Number of the slot where the faulty board is located.
11 Site Name

Site Name
12 Alarm Attribute

Alarm Character

0:Normal

1:Transient Count

Impact on the System

Major If the board fails to work due to unavailable clock signals from both MPTs, all services carried on the board are interrupted.

System Actions

  • When this alarm occurs and neither the active nor the standby clock signals are available, the NodeB will set the board as unavailable.
  • When this alarm is cleared and the board is still unavailable, the NodeB will set the board as available.

Possible Causes

  • The board hardware is faulty.
  • The MPT hardware is faulty.

Procedure

  1. Check whether there is such an alarm on multiple boards.

    Check whether there is such an alarm on multiple boards.

    Y => The MPT is faulty. Go to Step 2.

    N => The board is faulty. Go to Step 4.

  2. Reset the MPT.

    Reset the MPT.Check whether the alarm is cleared.

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

    N => The alarm is not cleared. Go to Step 3.

  3. Replace the MPT.

    Replace the MPT.Check whether the new board is available.

    Y => The new board is available. The alarm handling ends.

    N => The new board is not available. Please contact Huawei Customer Service Center.

  4. Reset the board.

    Reset the board.Check whether the alarm is cleared.

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

    N => The alarm is not cleared. Go to Step 5.

  5. Replace the board

    Replace the board.Check whether the new board is available.

    Y => The new board is available. The alarm handling ends.

    N => The new board is not available.Please contact Huawei Customer Service Center.

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