Prerequisites
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The RRU3931E and its cables have been installed.
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The input voltage of the RRU3931E ranges from 110 V AC to 220 V AC, and the
frequency ranges from 50 Hz to 60 Hz.
Context
NOTICE
After a RRU3931E is unpacked, power it on within 24 hours. If the RRU3931E is powered
off for maintenance, restore power to it within 24 hours.
Procedure
Step 1
Power on the RRU3931E.
DANGER
Do not look into optical modules without eye protection after the RRU3931E is powered on.
Step 2
Wait for 3 to 5 minutes, and observe the indicator status. Then, take actions based on the
indicator status.
Table 1-1
RRU3931E indicator status
If...
Then...
The RUN indicator blinks (on for 1s and off
for 1s), the ALM indicator is off, and the
RRU3931E is running correctly
End the power-on check task.
Any other indicator status is observed
The RRU3931E is faulty. Rectify the faults,
and go to
Step 1
NOTE
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Check the status of indicators on all cascaded RRU3931Es in cascading networking.
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A RRU3931E takes about 3 minutes to complete the startup procedure, during which the
indicator status is negligible.
l
During a startup, a RRU3931E reads and writes the flash memory and therefore the
indicators blinking quickly may blink irregularly for 1s to 2s, which does not affect
services.
----End
RRU3931E
Site Maintenance Guid
1 RRU3931E Site Maintenance Guide
Issue Draft A (2016-03-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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