4 Replacing the RRU
The RRU, a remote radio unit, forms a distributed BTS with the BBU.
Prerequisite
l The tools and materials, such as an ESD wrist strap, M4 screwdriver, M6 screwdriver,
wrench, waterproof tape, and insulating tape are ready.
l The quantity of faulty RRUs are confirmed, and new RRUs are ready.
Procedure
Step 1 Power off the RRU. For details, see 3.2 Powering Off the RRU.
Step 2 Wear an ESD wrist strap or a pair of ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or a pair of ESD
gloves, to prevent electrostatic damage to the boards, modules, or electronic components.
Step 3 Loosen the screw for protecting the cabling cavity on the cover plate by using the M4
screwdriver, and then open the cabling cavity of the RRU by lifting the handle on the cover plate.
Step 4 Record all the cable connections on the panel of the board to be replaced.
Step 5 Disconnect the cables from the ports in the cabling cavity and on the bottom panel.
Step 6 Loosen the captive screws on the two contact pieces of the main bracket by using the M4
screwdriver, as shown in Figure 4-1.
RRU3908 V2
Hardware Maintenance Guide 4 Replacing the RRU
Issue 01 (2010-04-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4-1
To Next Page
Loading...
