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BTS3900E GSM
User Guide
Context
After the BTS3900E is unpacked, it must be powered on in 24 hours. If the BTS3900E should
be powered off for maintenance, the duration of the power-off state cannot exceed 24 hours.
Procedure
Step 1 Set the corresponding MCB on the auxiliary power device of the BTS3900E to ON.
Do not look into the optical module after the BTS3900E is powered on.
Step 2 Wait three to five minutes, and then check the states of the LEDs on the BTS3900E. For the
indications of different LED states, see
Step 3 Take corresponding actions based on the LED state.
If...
The BTS3900E operates normally
The BTS3900E is faulty
----End
6.2.2 Powering Off the BTS3900E
This describes how to power off the BTS3900E in a normal situation or in an emergency.
Procedure
Step 1 Choose normal power-off or emergency power-off according to the field conditions.
If...
You need to power off the BTS3900E before
an equipment swap or a foreseeable regional
blackout
You need to power off the BTS3900E in an
emergency, such as fire, smoke, or water
immersion
Issue 01 (2010-01-15)
CAUTION
DANGER
NOTE
If BTS3900Es are cascaded, check the state of the LEDs on each BTS3900E.
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Copyright © Huawei Technologies Co., Ltd.
5.1.3 LEDs on the
BTS3900E.
Then...
End the power-on operation.
Rectify the fault, and then go to
Then...
Go to
Step 2
to perform a normal power-off.
Go to
Step 3
to perform an emergency power-
off.
6 BTS3900E Maintenance
Step
1.
6-3
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