RRU
Hardware Maintenance Guide
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 4-31 ICR housing three RRUs
Step 6 Reconnect all required cables for the new RRU, waterproof the connector on the RF jumper,
and ensure that vacant cable troughs in the cabling cavity are equipped by waterproof blocks.
For details about cable connections, see the blade RRU installation guide. Cables can be reused
according to onsite requirements.
Step 7 Close the cover plate of the RRU cabling cavity, and use an M5 torque screwdriver to tighten
the screws on the cover plate to 2 N·m (17.7 lbf·in.).
Step 8 Take off the ESD gloves, and pack up all the tools.
----End
Follow-up Procedure
If a blade RRU is used to replace a non-blade RRU, properly store the removed non-blade
RRU.
4.6 Operations After Replacement
This section describes operations to be performed after an RRU is replaced, including setting
the maximum output power locking, unblocking an RRU, powering on an RRU, and handling
a faulty RRU.