Huawei RRU3203 Hardware Maintenance Manual page 19

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RRU3203

Hardware Maintenance Guide

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.

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

Issue 04 (2011-09-15)

WARNING

NOTE

The optical modules to be installed must match CPRI rates.

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.

Fill in the fault form with detailed information about the removed component.

Contact the local Huawei office to handle the faulty optical module.

Huawei Proprietary and Confidential

5 Replacing an Optical Module

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