Figure 4-3
Supporting the RRU bottom
CAUTION
When removing the RRU, hold the RRU handle with one hand and support the RRU bottom
with the other hand.
Step 9
Tighten the captive screws on the two hoist clamps on the main mounting bracket to 1.4 N·m
(12.39 lbf·in.). Install a new RRU and then waterproof the RRU.
Step 10
Reconnect all required cables, and verify that vacant cable troughs in the cabling cavity are
equipped by waterproof blocks.
Step 11
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 12
Power on the RRU by referring to
3.1 Powering On an RRU
.
Step 13
Check the operating status of the new RRU by observing the status of RRU indicators. For details
about the status of the indicators, see RRU Indicators.
Step 14
Run the
UBL BRD
command to unblock the RRU.
Step 15
Take off the ESD gloves, and pack up all the tools.
----End
Follow-up Procedure
l
Place the removed RRU 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 RRU.
l
Fill in the fault form with detailed information about the removed component.
l
Contact the local Huawei office to handle the faulty component.
RRU3201
Hardware Maintenance Guide
4 Replacing an RRU
Issue 04 (2011-09-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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