Huawei 3900 Series Commissioning Manual page 141

3900 Series Multi-Mode Base Station
Commissioning Guide
3.
4.
Issue 02 (2010-07-30)
If the ALM LED It Indicates That...
Is...
Blinking An alarm is generated
but the board may not
need to be changed.
Check whether this
alarm is due to faults
caused by the
associated boards or
ports.
Check the STATE LED on the FAN.
If the STATE LED
Is...
Blinking (green)
Blinking (red)
Check the CPRI LEDs on the GTMU/WBBP/LBBP/MRFU/RRU3908.
If the CPRI LED Is...
ON (green)
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6 Commissioning the MBTS by Using USB and M2000
It Indicates That...
The board works
properly.
The board is faulty.
It Indicates That...
The CPRI link is normal,
and the MRFU/RRU3908
is functioning properly.
Then...
Check whether the RUN LEDs on the
l
other boards blink quickly.
If the RUN LED on the EMUA
–
blinks quickly, check the RS485
signal cable connection.
Check the RUN LED on each
–
board in the BBU.
Check whether the dry contact alarm
l
signal cable is properly connected to
the corresponding port on the UPEU.
Plug in the GTMU/WMPT/LMPT/
l
WBBP/LBBP/UERI/UTRP again or
restart the MRFU/RRU3908 to check
whether the fault is rectified.
If the GPS antenna system is
l
configured, check whether it is
properly connected.
Then...
Go to Step 1.4.
Reinstall the board to check whether
the fault is rectified. If the fault
persists, replace the board.
Then...
Go to Step 2.
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