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SmartAX MA5612 Multi-service Access Module
Maintenance Guide
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Exception Handling
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2.2 Cleaning the Connector of the Optical Fiber
This topic describes how to clean the connector of the optical fiber. Frequent insert and remove
or no dustproof treatment for a longtime causes the connector to be dirty and aged, which
deteriorates the quality of the line. Therefore, you need to periodically clean the connector of
the optical fiber, including the ends of the optical fiber connector, optical port of the optical
transceiver, and adapter, and take measures to prevent dust.
Prerequisites
Prepare the cleaning tools before cleaning, and follow "Precautions".
Tools, Meters, and Materials
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Issue 01 (2012-07-25)
– Each connection point is secure and reliable without corrosion and oxidation.
– The ground cable does not deteriorate, and its sheath is not damaged.
– The ground bar is not corroded or oxidized, and anti-corrosion measures are taken
properly.
Check whether the earth resistance meets the following requirements:
– The lap resistance between the ground cable of the device and the ground bar or ground
body is smaller than 0.1 ohm.
– The ground resistance between the ground bar or ground body and the earth is smaller
than 10 ohms.
If the ground cable deteriorates, or its sheath is damaged, replace it.
If the connection point of the ground cable is corroded or aged, replace the ground cable
or ground bar.
If the lap resistance between the ground cable of the device and the ground bar or ground
body is larger than 0.1 ohm, route the ground cable again.
If the ground resistance between the ground bar or ground body and the earth is larger than
10 ohms, take one of the following measures to decrease the ground resistance:
l Bury the ground body or ground network deeper.
l Use a larger ground body.
l Decrease the resistivity of the earth.
If the fault persists, contact Huawei technical support engineers. For details, see
Contacting Huawei for
Dust-free cotton: a long silk cotton specially used for cleaning the ends of the optical fiber
connector.
Dust-free bar: used for cleaning the optical port of the optical transceiver and adapter
(flange). It has two specifications: ф2.5 mm and ф1.25 mm. You can select one according
to the port type (use the dust-free bar with ф2.5 mm for the ports of SC and FC types, and
use that with ф1.25 mm for the ports of LC and MTRJ types).
Dust-proof cap: used for ends of the optical connector, optical port of the optical transceiver,
and adapter.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Assistance.
2 Field Maintenance Guide
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Troubleshooting
