Powering On And Off An Rru - Huawei RRU Hardware Maintenance Manual

RRU
Hardware Maintenance Guide
About This Chapter
After an RRU is powered on, check the status of RRU indicators and voltage. Before the RRU
is powered off, follow the normal power-off or emergent power-off procedure as required.
3.1 Powering On an RRU
This section describes how to power on an RRU. Observe the indicators on the RRU to check
the running status.
3.2 Powering Off an RRU
An RRU can be powered off in two ways: normal power-off and emergency power-off. You
need to perform a normal power-off in scenarios such as an equipment swap or foreseeable
regional blackout, and you need to perform an emergency power-off in emergencies such as a
fire, smoke, or water damage in the equipment room.
3.1 Powering On an RRU
This section describes how to power on an RRU. Observe the indicators on the RRU to check
the running status.
Prerequisites
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Context
After unpacking an RRU, you must power on it within 24 hours. If you power off the RRU
for maintenance, you must restore power to the RRU within 24 hours.
Issue 16 (2015-03-23)
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Powering On and Off an RRU

The RRU hardware is installed and RRU cable connections are secure.
The input voltage of a DC RRU ranges from -36 V DC to -57 V DC.
The input voltage of an AC RRU ranges from 100 V AC to 240 V AC.
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