ALM-3184 UPS Communication alarm

Description

This alarm is triggered when the communication link between the UPS and BTS3001C fails.

Attribute

Alarm ID	Alarm Severity	Alarm Type
3184	Minor	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. 129:MMU
3	Board No.	Number of the fault board 0:MMU
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 or module is located 7: BTS3001C-108/BTS3001C-116 8: BTS3001C-204
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

When this alarm occurs, the alarms related to the UPS cannot be monitored and reported.

System Actions

None.

Possible Causes

The UPS is not installed, and the configuration of the corresponding BTS alarm parameters is incorrect.
The communication cable between the UPS and the BTS is faulty.
The communication cable between the UPS and the BTS is not in proper connection.

Procedure

Reset the MMU
Reset the MMU and view whether the alarm is cleared.

Y=> The alarm handling ends.

N=> Go to Step 2.
Check whether the UPS has been installed.
Check whether the UPS has been installed to the BTS3001C.

Y=> Go to Step 4.

N=> Go to Step 3.
Modify the data configuration of the BSC
Log in to the LMT, check the configuration data of the UPS, the "Clock Parameter 2" data is displayed. Modify the BSC data configuration as "UPS uninstalled". Check whether the alarm is cleared.

Y=> The alarm handling ends.

N=> Go to Step 4.
Check the communication cable between the UPS and the BTS3001C.
1. Check the communication cable between the UPS and the BTS3001C is in proper connection. If the cable is not in proper connection, re-connect the cable after the BTS is powered off. Power on the BTS again upon completion of the re-connection and check whether the alarm is cleared.
  Y=> The alarm handling ends.
  
  N=> Go to Step b.
2. Power off the BTS Disconnect the connector of the UPS alarm cable at the BTS side. Measure the resistance between the core and the outer layer of the BTS3001C output alarm cable with a multimeter. Exchange the position of the two probes and measure the resistance again. Check whether the measurement result deviates a lot from the normal value.
  Note:
  
  Normally, the two measurement results should be different. One is within the range of 1.0-1.1O Ω, and the other is within 0.6-0.7O Ω.
  
  Y=>The inner container hardware may be faulty.Please contact Huawei Customer Service Center.
  
  N=> Go to Step 5.
Check whether the UPS works normally
Invite the UPS manufacturer to check whether the UPS works normally.

Y=>The inner container hardware may be faulty.Please contact Huawei Customer Service Center for solutions.

N=> Invite the UPS manufacturer to repair or replace the UPS. The alarm handling ends.