WARNING
Do not look into the fiber optic cable or optical module without eye protection after the fiber
optic cable is removed from the optical module.
Step 5
Lower the puller on the faulty optical module, and then pull the puller until the optical module
is removed from the RRU.
Step 6
Choose the optical module of the same type as the faulty optical module according to the label
on the module. Install a new optical module into the RRU.
NOTE
The optical modules to be installed must match CPRI rates.
Step 7
Insert the fiber optic cable connector into the new optical module.
Step 8
Check the transmission of CPRI signals by observing the status of CPRI_W and CPRI_E
indicators. For details about the status of the indicators, see RRU Indicators.
Step 9
Reconnect the cables in the cabling cavity.
Step 10
Close the cover plate of the RRU cabling cavity, and then tighten the protection screw on the
cover plate to 1.4 N·m (12.39 lbf·in.).
Step 11
Take off the ESD gloves, and pack up all the tools.
----End
Follow-up Procedure
l
Place the removed optical module into the ESD box or bag. Then, place the ESD box or
bag into a foam-padded carton or the packing box of the new module.
l
Fill in the fault form with detailed information about the removed component.
l
Contact the local Huawei office to handle the faulty optical module.
RRU3203
Hardware Maintenance Guide
5 Replacing an Optical Module
Issue 04 (2011-09-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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