4118 4-way Diversity receiving alarm

Description

This alarm is reported when any of an antenna from antenna 1 to antenna 4 is faulty.

Alarm ID	Alarm Severity	Alarm Type
4118	Major	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. 65:DTRU/GTRU/DDRM 88:DRRU 92:DRFU 96:MRRU 100:MRFU 101:GRFU 102:GRRU 151:QTRU
3	Board No.	Number of the fault board
4	PassNo	Number of the passage where the faulty board is located.
5	SubLink No.	Alarm sub-category number 0:antenna_1 alarm 1:antenna_2 alarm 2:antenna_3 alarm 3:antenna_4 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

The receiving sensibility lowers, reducing the coverage area.

None

Check the corresponding antenna and feeder.
Use a sitemaster to check the VSWR based on the alarm tributary number. Check whether the antenna is normal. If no, go to step [2].
Replace the faulty antenna according to the engineering requirements.
Perform a Level-4 reset of the BTS through the LMT or Site Maintenance Terminal System and check whether the alarm is cleared.
Y=> The alarm is cleared. The alarm handling is complete.

N=> The alarm is not cleared. The fault may lie in faulty hardware of DTRU. Please contact Huawei Customer Service Center.