4932 Hierarchical Power Supply Alarm

Description

If the AC power is not available, or the battery voltage is lower than the hierarchy power supply voltage threshold, the hierarchy power supply function is used, and this alarm is reported.

Attribute

Alarm ID	Alarm Severity	Alarm Type
4932	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. 64:DOMU
3	Board No.	Number of the fault board 0-7:DOMU
4	PassNo	Number of the passage where the faulty board is located.
5	SubLink No.	Alarm sub-category number 0: The BSC locks all the non-main B TRXs when the AC power is not available. 1: The BTS shuts off the power amplifiers of all the TRXs when the battery voltage is lower than the set threshold.
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. 13:BTS3006C; 14:BTS3002E; 15:BTS3012AE;
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 BSC locks all the non-main B TRXs when the AC power is not available.
The BTS shuts off the power amplifiers of all the TRXs when the battery voltage is lower than the set threshold.

System Actions

None.

Possible Causes

The AC power is not available, and the hierarchy power supply function is used.
The battery voltage is lower than the hierarchy power-off voltage threshold.

Procedure

For Sub No.0: check the AC power. If the AC power is available, check whether the alarm is cleared.
Y=> The alarm is cleared. Alarm handling is completed.

N=> The alarm is not cleared. Go to Step 3.
For Sub No.1: check the AC power, the hierarchy power-off voltage threshold, and the battery voltage. If the AC power is not available, and the battery voltage is lower than the hierarchy power-off voltage threshold, restore the AC power. Then check whether the alarm is cleared.
Y=>The alarm is cleared. Alarm handling is completed.

N=>The alarm is not cleared. Go to Step 3.
Replace the SidePower/APM and check whether the alarm is cleared
Y=>The alarm is cleared. Alarm handling is completed.

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