User Guide

Table Of Contents

Figure 3-1 Process of powering on an AAU

NOTE

l The normal input voltage of an AAU is 220 V AC and should range from 200 V AC to 240 V AC.

l When an AAU is working properly, the RUN indicator is blinking (on for 1s and off for 1s), and the ALM

indicator is steady off. For details about indicators, see AAU3940 Hardware Description.

3.2 Powering off an AAU

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

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

territorial blackout. You must also power off the AAU in an emergency such as a fire, smoke,

or water damage.

Procedure

l Normal power-off

1. Set the corresponding circuit breaker on the power equipment for the AAU to OFF.

l Emergency power-off

NOTICE

Emergency power-off may damage the AAU. Therefore, do not perform an emergency

power-off in normal cases.

AAU3940

Hardware Maintenance Guide

3 Powering On and Powering Off an AAU

Issue 01 (2015-01-15) Huawei Proprietary and Confidential