ALM-3842 EAC Communication Alarm

Description

This alarm is reported when the EAC communication is abnormal.

Alarm ID	Alarm Severity	Alarm Type
3842	Critical	Fault

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. 13:EAC
3	Board No.	Number of the fault board 0:EAC0
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 is located. 9: BTS3002C
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

The alarms related to environment monitoring cannot be reported.

None.

The corresponding EAC is not installed or powered on.
Communication between the corresponding EAC and the IOMU is abnormal.
This alarm may be generated when the BTS is reset and it will auto disappear after successful reset.

Check if the EAC (environment alarm box) is installed or powered on.
Y=>Go to Step 3.

N=>Go to Step 2.
Install the corresponding EAC and power it on. See if the alarm is cleared.
Y=>The alarm is cleared. Alarm handling is completed.

N=>Go to Step 3.
Check if the communication interface cable of the EAC is properly connected.
Y=>Go to Step 5.

N=>Go to Step 4.
Connect the communication interface cable of the EAC and see if the alarm is cleared.
Y=>The alarm is cleared. Alarm handling is completed.

N=>Go to Step 5.
Replace the EAC and see if the alarm is cleared.
Y=>The alarm is cleared. Alarm handling is completed.

N=>Go to Step 6.
Check other boards on CBUS3.Disconnect all the communication cables of the CDU, EDU, TES, and PMU on CBUS3 and see if the alarm is cleared.
Y=>Go to Step 7.

N=>Go to Step 8.
Replace the faulty board.
Alarm handling is completed.
Reset the IOMU and see if the alarm is cleared.
Y=>The alarm is cleared. Alarm handling is completed.

N=>Go to Step 9.
Replace the IOMU and see if 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.