Huawei DBS3900 Installation Manual page 64

DBS3900 LampSite
Installation Guide
Power-on check involves high-voltage operation. Be cautious when conducting the power-on
check. Any direct contact with the input voltage or indirect contact through damp objects
might endanger your life.
Procedure
Step 1 Measure the RHUB earth resistance.
If...
The RHUB earth resistance is less than
10 ohms
The RHUB earth resistance is equal to
or larger than 10 ohms
Step 2 Measure the voltage of the RHUB.
If...
The external power supply ranges from
100 V AC to 240 V AC
The external power supply does not
range from 100 V AC to 240 V AC
Step 3 Power on the RHUB. Wait 3 to 5 minutes, check the status of the RUN indicator of the
RHUB after the RHUB runs properly.
If the Status of
the RUN
Indicator...
Steady on
Steady off
On for 1s and off
for 1s
On for 0.125s
and off for
0.125s
Issue 08 (2016-05-30)
It Indicates that...
The power supply is
normal while the board
is faulty.
There is no power input
or the board is faulty.
The devices work
properly.
The board software is
being uploaded.
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Copyright © Huawei Technologies Co., Ltd.
Then...
Go to Step 2.
Find out the cause and ensure that the resistance
meets requirement. Then, go to
Then...
Go to Step 3.
Find out the cause and ensure that the resistance
meets requirement. Then, go to
Then...
Power off the RHUB, and power on it
again after rectifying the board fault.
Power off the RHUB, and check the power
input again. Rectify the board faulty and
power on the RHUB again if the power
input is normal.
End the operation.
Power off the RHUB if the uploading is not
finished in 5 minutes, and check whether
the configuration file is correct. Power on
the RHUB again after the fault is rectified.
6 Installing an RHUB
Step 2.
Step 3.
57