ALM-5752 PSU Shutdown Alarm

Description

This alarm is reported when the modules are powered off.

Attribute

Alarm ID Alarm Severity Alarm Type
5752 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.

133:APM/APMU
3 Board No.

Number of the fault board

Value range:0-8:APMU
4 PassNo

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

Alarm sub-category number

0: PSU 0 faulty alarm.

1: PSU 1faulty alarm.

2: PSU 2 faulty alarm.
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;

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

The power supply of the BTS is abnormal and the services are interrupted.

System Actions

None.

Possible Causes

  • AC input phase loss (probably).
  • The AC input power cable is connected incorrectly.
  • The PSU is faulty.

Procedure

  1. Check whether the AC power input cable is connected incorrectly. The L wire should be connected to the three terminals on the lower left part instead of the AC output terminals above,which is the correct cable connection of the AC input power cable.

    If the AC input power cable is properly connected, go to step [2].

  2. Measure the voltage between the L wire and the N wire of the AC power input cable by using the AC voltage measurement function of a multimeter. The normal voltage is 220 V. If the voltage of the phase is 0 , the corresponding AC input phase is missing. Check the AC power supply of the customer equipment room. If all phases are normal, go to step [3].

  3. Check whether the three power LEDs on the panel of the PSU are on. If any of the power LEDs on the panel is off, unplug the PSU and plug it back. If the LED is still off, replace the PSU.

  4. Check whether the alarm is cleared:

    Y => The alarm is cleared. End the alarm handling.

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

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