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Optical modules are hot-swappable.
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It takes about five minutes to replace an optical module on the AAU, which involves
disconnecting the fiber optic cable, removing the faulty optical module, inserting a new
optical module, reconnecting the fiber optic cable, and waiting for CPRI links to restore.
Procedure
Step 1
Put on an ESD wrist strap or a pair of ESD gloves.
NOTICE
Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD
gloves, to prevent electrostatic damage to the boards, modules, or other electronic components.
Step 2
Record the connections of the optical module and fiber optic cable.
Step 3
Press the latch on the optical connector, and then remove the connector from the faulty optical
module, as shown in the following figure.
Figure 5-2
Removing the cables
CAUTION
Do not look into the optical module without eye protection after removing the fiber optic cable
from the optical module.
Step 4
Lower the puller on the faulty optical module, and then pull the puller until the optical module
is removed from the AAU.
Step 5
Install a new optical module into the AAU according to the label on the module.
NOTE
The optical modules to be installed must match CPRI rates.
AAU3940
Hardware Maintenance Guide
5 Replacing the Optical Module
Issue 01 (2015-01-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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