ALM-3584 DRU Interior I/O alarm

Description

This alarm is triggered when the data received by the sending FIFO (First in First Out) overflows or is null, or data check error occurs. FIFO is a buffer working under the principle of "first in first out". It is responsible for serial-to-parallel conversion, rate matching and so on.

Attribute

Alarm ID	Alarm Severity	Alarm Type
3584	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. 135:DRU
3	Board No.	Number of the fault board 0:DRU0 1:DRU1
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 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

Impact on the System

The DRU fails and run abnormally upon occurence of this alarm. As a result, all services supported by this DRU are interrupted.

System Actions

The system shuts off the power amplifier upon occurence of this alarm.

Possible Causes

Internal receiving/transmitting channels are faulty.
The DRU hardware is faulty.

Procedure

Reset the BTS
Perform fourth-level reset on the BTS3002C or reset it by power-down (recommended) through the LMT or local maintenance system. Check whether the alarm is cleared.

Y=> The alarm handling ends.

N=> Go to Step 2.
Remove and reinsert the MCU and DRU
Power down the BTS3002C. Remove and reinsert the modules on the backplane to ensure they are in well connection. Power on the BTS3002C and check whether the alarm is cleared.

Y=> The alarm handling ends.

N=> Go to Step 3.
Replace the MCU and DRU 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.