ALM-5082 BBU FAN Communication Abnormal

Description

This alarm is triggered when the I2C communication between the MPT and the BBU fans is abnormal.

Attribute

Alarm ID Alarm Severity Alarm Type
5082 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

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.

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: The system fails to detect the running status of the fans, and thus the system cannot adjusting the fan speed.

System Actions

None.

Possible Causes

  • The power supply between the fans and the MPT is abnormal or the cable connection between the fans and the MPT is abnormal.
  • The fans are faulty.

Procedure

  1. Check whether the cables between the fans and the MPT are connected properly.
    1. Check whether the power cable and I2C communication cable between the fans and the MPT are properly connected. If the cables are not properly, reconnect the cables.
    2. 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. Replace the fans.

    Replace fans.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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