ALM-5650 PSU Faulty Alarm

Description

This alarm is reported in the following cases: The power supply unit (PSU) is shut down because its output voltage exceeds the higher threshold. The fan of the PSU is faulty. The PSU is shut down because its temperature exceeds the higher threshold. Internal faults of other modules.

Attribute

Alarm ID	Alarm Severity	Alarm Type
5650	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. 72:DPMU 133:APM/APMU
3	Board No.	Number of the fault board Value range:0-8:DPMU/APMU/APM
4	PassNo	Number of the passage where the faulty board is located.
5	SubLink No.	Alarm sub-category number. Sub No.0: Power Supply Unit (PSU) 0 communication alarm. Sub No.1: PSU 1 communication alarm. Sub No.2: PSU 2 communication alarm. Sub No.3: PSU 3 communication alarm. Sub No.4: PSU 4 communication alarm. Sub No.5: PSU 5 communication alarm. Sub No.6: PSU 6 communication alarm. Sub No.7: PSU 7 communication alarm. Sub No.8: PSU 8 communication alarm. Sub No.9: PSU 9 communication 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. 12:BTS3012; 13:BTS3006C; 14:BTS3002E; 15:BTS3012AE; 16:BTS3012 II; 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

The PSU is shut down because its output voltage exceeds the upper threshold.
The fan of the PSU is faulty.
The PSU is shut down because its temperature exceeds the upper threshold.
Internal faults of other modules.

Procedure

Check for the over voltage or under voltage alarms of the –48 V DC power.
1. Check whether the –48V abnormal voltage alarms exist:
  Y => The precedent alarms exist. Go to step b.
  
  N => The precedent alarms do not exist. Go to procedure 2.
2. Handle the –48 V abnormal voltage alarms.
3. Check whether the alarm is cleared:
  Y => The alarm is cleared. The alarm handling ends.
  
  N => The alarm is not cleared. Go to procedure 2.
Replace the faulty PSU.
1. Replace the faulty PSU.
2. Check whether the alarm is cleared:
  Y => The alarm is cleared. The alarm handling ends.
  
  N => The alarm is not cleared. Contact Huawei Customer Service Center.