Huawei RRU3908 V2 - Powering on the RRU

3.1 Powering On the RRU
You need to power on the RRU and check the running status of the RRU according to the status
of the LEDs.
Prerequisite
l The hardware and cables of the RRU are installed.
l If DC power is used, the input voltage ranges from -36 V DC to -57 V DC.
l If AC power is used, the input voltage ranges from 100 V AC to 240 V AC.
Context
CAUTION
The RRU must be powered on within 24 hours after being unpacked. If the RRU needs to be
powered off for maintenance, the duration of the power-off state cannot exceed 24 hours
Procedure
Step 1 Power on the RRU.
DANGER
Do not look into the optical module after the RRU is powered on.
Step 2 Wait for three to five minutes, and then check the status of the LEDs on the RRU. For details,
see RRU Indicators.
NOTE
If RRUs are connected in cascading mode, check the status of the LEDs on each RRU.
Step 3 Take corresponding actions according to the status of the LEDs.
If ...
Then ...
The RRU works properly End the power-on operation.
The RRU is faulty Rectify the fault, and then go to Step 1.
----End
3 Powering On and Powering Off the RRU
RRU3908 V2
Hardware Maintenance Guide
3-2 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 01 (2010-04-10)