Huawei ECC500 - RS485 Communication Card Alarms

ECC500
User Manual
6 Maintenance and Troubleshooting
Issue 05 (2020-03-16)
Copyright © Huawei Technologies Co., Ltd.
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6.2.1 Alarm Reference for the RS485 Communication Card
For details about the low voltage alarm for the COM5 port on the RS485 communication card and how
to clear the alarm, see the alarm description and troubleshooting instructions provided for the 6.2.1.2
MUS02A_COM4 Voltage Low Alarm.
6.2.1.1 MUS02A_Board Not Exist
Description
This alarm is generated when the board is not securely inserted or is faulty.
Attribute
Alarm ID
Alarm Severity
Alarm Type
22630
Set to Major by default.
Equipment alarm
Impact on the System
After this alarm is generated, the WebUI stops updating parameter values of undetected
equipment and fails to send configuration signals. Maintain the equipment immediately.
Possible Causes

The board is not securely inserted.

The board is removed.

The board is faulty.
Procedure
Step 1 Securely insert the board and tighten the screws.
Step 2 Replace the faulty board.
----End
Clearing
This alarm is cleared when the board is securely inserted into the subrack and the
communication between the board and the ECC500 resumes.
6.2.1.2 MUS02A_COM4 Voltage Low Alarm
Description
This alarm is generated when the output voltage of the COM4 port is below the alarm
threshold.