LEDs
describes the LEDs on the panel of the UBRI.
Table 4-43
LEDs on the panel of the UBRI
LED
Color
State
Description
RUN
Green
ON steady
There is power
supply, but the board
is faulty.
OFF steady
There is no power
supply, or the board
is in the alarm status.
1s ON, 1s OFF
The board works
properly.
0.125s ON, 0.125s
OFF
The board is loading
software.
ALM
Red
ON or blinking at a
high frequency
The board is in the
alarm status.
OFF steady
No alarm is
generated.
ACT
Green
ON steady
The board works
properly.
OFF steady
The board is not
working.
The UBRI provides six LEDs indicating the status of the CRRI links, which are above the SFP
ports.
describes the CPRI link status LED.
Table 4-44
CPRI link status LED
Label
Color
State
Description
CPRIx
Red/Green
ON (green)
The CPRI link is
available.
ON (red)
The optical module
fails to receive
signals.
0.125s ON, 0.125s
OFF (Red)
The RRU on the CPRI
link is faulty.
1s ON, 1s OFF (red) The CPRI link is out
of lock.
4 BTS3900 Components
BTS3900
Hardware Description
4-38
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 04 (2011-02-15)