ALM-13066 Monitoring Unit Power Input Abnormal

Description

This alarm is reported when the DC input power is too high or too low.

Attribute

Alarm ID Alarm Severity Alarm Type
13066 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.

162:GMU
3 Board No.

Number of the fault board

0:GMU
4 PassNo

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

Alarm sub-category number

1: DC overvoltage

2: DC undervoltage

3: No DC input
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.

30:BTS3900E;
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
13 Problem

Problem

1: DC overvoltage

2: DC undervoltage

3: No DC power

Impact on the System

The hardware may be damaged.

System Actions

None.

Possible Causes

  • The alarm threshold is inappropriate.
  • An alarm is generated at the power supply to the BTS.
  • The environment monitoring unit is faulty.

Procedure

  1. Check the output from the power supply cabinet.
    1. Check whether the output from the power supply cabinet is normal.

      Y => The output is normal. Go to procedure 2.

      N => The output is abnormal. Go to step b.

    2. Clear the fault in the power supply cabinet to ensure that its output is normal. Check whether the alarm is cleared.

      Y => The alarm is cleared. No further action is required.

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

  2. Check the threshold of the voltage alarm.
    1. Check whether the threshold of the voltage alarm for the -48 V power is appropriate.

      Y => The threshold is appropriate. Contact Huawei Customer Service Center.

      N => The threshold is inappropriate. Go to step b.

    2. Set the threshold of the -48 V power alarm.
    3. Check whether the alarm is cleared.

      Y => The alarm is cleared. No further action is required.

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

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