ALM-4780 BTS3012 cabinet 1 arrester alarm

Description

This alarm is reported when the lightning arrester on the main rack where the DTMU is located is faulty.

Attribute

Alarm ID Alarm Severity Alarm Type
4780 Critical 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.

64:DTMU
3 Board No.

Number of the fault board

0-5:DTMU
4 PassNo

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

Alarm sub-category number

255:None
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.

12:BTS3012;

13:BTS3006C;

14:BTS3002E;

15:BTS3012AE;

16:BTS3012 II;
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

The lightning protection capability of the BTS is weakened.

System Actions

The abnormal slot alarm is reported.

Possible Causes

The lightning arrester is damaged.

Procedure

  1. Check the indicator on the lightning protection arrester on the top of the cabinet.
    1. If the indicator is red, replace the lightning arrester as follows:

      Power off the cabinet, remove the faulty lightning protection arrester, insert a new lightning protection arrester, and then check whether the alarm is cleared.

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

      N=> The alarm is not cleared. Go to step 2.

    2. If the indicator is green, go to next step.
  2. Check the alarm cable

    Ensure the alarm cable between the lightning protection arrester and the DSAC is well

    Check whether the alarm is cleared.

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

    N=> The alarm is not cleared. Please contact Huawei Customer Service Center.

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