The preceding faults lead to temporary or long-term cut-off of optical signals; or even cause
permanent damages to the optical module, affecting communication services.
Measures to Prevent a Loosened Optical Module
1.
When installing an optical module, insert it in position. If you hear a click or feel a slight
shake, it indicates that the latch boss is secured.
If the latch boss is not secured, the gold finger of the optical module is not in good
contact with the connector on the board. In this case, the link may be connected but
optical signals will be cut off or the optical module will be loosened when the optical
module is shaken or hit.
2.
shows the release handle on an optical module when it is open and closed.
When inserting the optical module, make sure that the release handle is closed. At this
time, the latch boss locks the optical module. After the optical module is inserted, try
pulling it out to see if it is installed in position. If the optical module cannot be pulled
out, it is secured.
Figure 5-95
State of the release handle
Close the release handle
Open the release handle
Measures to Prevent Receptacle Contamination
1.
Cleaning tissues must be prepared on site. You need to clean the optical connector before
inserting it in the receptacle. This protects the receptacle against contamination on the
surface of the optical connector.
Figure 5-96
Cleaning optical fibers with special cleaning tissues
R250D-E
Hardware Installation and Maintenance Guide
5 Appendix
Issue 01 (2016-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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