Replacing An Optical Module - Huawei RRU3931E Maintenance Manual

RRU3931E
Site Maintenance Guid
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Step 14 Take off the ESD gloves and pack up all the tools.
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Follow-up Procedure
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1.5 Replacing an Optical Module

An optical module implements photoelectric conversion, enabling optical transmission
between a RRU3931E and other devices. Before replacing an optical module, disconnect the
fiber optic cable from the optical module. The disconnection interrupts transmission of optical
signals.
Prerequisites
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Context
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Procedure
Step 1 Put on ESD gloves.
Take proper ESD protection measures, for example, wear ESD gloves, to prevent electrostatic
damage to the boards, modules, or electronic components.
Issue Draft A (2016-03-30)
– Run the UBL CELL command if the RRU3931E works in LTE mode.
– Run the UBL ULOCELL command if the RRU3931E works in UMTS mode.
Manually synchronize inventory data.
Manually change the RRU3931E status from TESTING to NORMAL.
Place the replaced RRU3931E into an ESD bag. Then, place the ESD bag into a foam-
padded carton or the packing box of the new RRU3931E.
Fill in the fault form with the detail information of the replaced RRU3931E.
Contact the local Huawei office to handle the faulty RRU3931E.
The type and number of optical modules to be replaced are confirmed, and new optical
modules are ready.
Tools and materials, such as ESD gloves, M10 Phillips screwdrivers, ESD box or ESD
bag, are ready.
Optical modules are inserted in FE/GE2 and FE/GE3 ports of the RRU3931E.
Optical modules are hot-swappable.
Optical module replacement involves disconnecting the fiber optic cable, removing the
faulty optical module, inserting a new optical module, connecting the fiber optic cable to
the new module, and waiting for the link on the Ethernet optical port to resume. The
whole process takes about 5 minutes.
NOTICE
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