Powering On An Rru; Powering Off An Rru - Huawei RRU3201 Hardware Maintenance Manual

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RRU3201

Hardware Maintenance Guide

3.1 Powering On an RRU

Set the corresponding circuit breaker on the auxiliary power device for the RRU to ON, and

check the operating status of the RRU by observing the status of RRU indicators.

Prerequisite

Context

After you unpack 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.

Procedure

Step 1 Set the corresponding circuit breaker on the auxiliary power device for the RRU to ON to power

on the RRU.

Do not look into the optical module without eye protection after the RRU is powered on.

Step 2 Keep the RRU running for three to five minutes to check the status of RRU indicators. For

details, see RRU Indicators.

Step 3 Take corresponding actions based on the status of the indicators.

If...

The RRU is working properly

The RRU is faulty

----End

An RRU can be powered off in two ways: normal power-off and emergency power-off. You

must power off an RRU in a normal situation such as moving the equipment or anticipating a

Issue 04 (2011-09-15)

The RRU hardware is installed and RRU cable connections are secure.

The input voltage of the RRU ranges from -36 V DC to -57 V DC.

CAUTION

DANGER

Huawei Proprietary and Confidential

3 Powering On and Off an RRU

Then...

End the power-on check task.

Set the circuit breaker to OFF. Rectify the

fault, and then go to

Step

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