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RRU3931E
Site Maintenance Guid
Prerequisites
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Context
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.
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...
The RUN indicator blinks (on for 1s and off
for 1s), the ALM indicator is off, and the
RRU3931E is running correctly
Any other indicator status is observed
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Issue Draft A (2016-03-30)
The RRU3931E and its cables have been installed.
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.
NOTICE
DANGER
NOTE
l Check the status of indicators on all cascaded RRU3931Es in cascading networking.
A RRU3931E takes about 3 minutes to complete the startup procedure, during which the
indicator status is negligible.
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.
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1 RRU3931E Site Maintenance Guide
Then...
End the power-on check task.
The RRU3931E is faulty. Rectify the faults,
and go to
Step 1
4
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