Parts Replacement - Huawei ECC500 User Manual

ECC500
User Manual
Module

6.4 Parts Replacement

Context
This section describes how to replace parts of the ECC500.



The main control module, RS485 and AI/DI expansion cards can be replaced in the same way.
This section describes how to replace the main control module.
Issue 04 (2019-12-20)
For details about how to view alarm information, see
Before replacing parts, ensure that the power supply to the ECC500 has been disconnected
and power cable terminals have been removed.
Only trained and qualified personnel are allowed to perform the operations.
Operation personnel must wear electrostatic discharge (ESD) gloves.
Copyright © Huawei Technologies Co., Ltd.
Symptom
AI/DI expansion card, or
Independent Deployment
AI/DI Unit is faulty.
The RUN indicator is
blinking fast (0.125s on and
0.125s off), indicating that
the RS485 expansion card,
AI/DI expansion card, or
Independent Deployment
AI/DI Unit fails to
communicate with the host.
The ALM indicator is on,
indicating that there is a
critical or major alarm.
After the RS485 expansion
card or AI/DI expansion
card is powered on the first
time, the ALM indicator is
on. One minute later, the
RUN indicator blinks fast,
indicating that the board is
in poor contact.
7.11 How Can I Handle
6 Maintenance and Troubleshooting
Solution
Check that the board is in
good contact with the
ECC500 and runs properly.
Check and clear the alarm.
Reinstall the board.
Alarms?.
64