If the CPRI LED Is...
It Indicates That...
Then...
OFF
The port of the optical
module is not configured,
the optical module is
powered off, or the LED is
faulty.
If the MRFU or RRU3908
is connected to this port,
check the installation of
BBU and RRU according to
configuration
requirements.
l
If the installation is
inconsistent with
configuration
requirements, reinstall
the RRU according to
configuration
requirements.
l
If the installation is
consistent with
configuration
requirements, replace
the boards.
ON (red)
The port of optical module
is configured, but the
optical module is not in
position, or the CPRI
optical cable is improperly
connected.
Handle the alarm according
to the suggestions. For
details, see
Alarm
Reference
.
Blinking red, ON for 1s,
OFF for 1s)
The RRU or LRFU on the
CPRI link reports the
VSWR alarm.
Handle the alarm according
to the suggestions. For
details, see
Alarm
Reference
.
Blinking (red, ON for
0.25s, OFF for 0.25s)
The RRU or LRFU on the
CPRI link is faulty.
Handle the alarm according
to the suggestions. For
details, see
Alarm
Reference
.
Step 2
Check the ALM LEDs on the PMU/AFMU/EMUA.
If the ALM LED Is... It Indicates That...
Then...
OFF
The module or the
device is functioning
properly.
The check is complete.
ON
The module or the
device is faulty.
Reinstall the module or power on the
device again to check whether the fault is
rectified.
Step 3
Check the VSWR LED status of the MRFU/RRU3908, and perform the next step based on the
status of the VSWR LED.
6 Commissioning the MBTS by Using USB and M2000
3900 Series Multi-Mode Base Station
Commissioning Guide
6-24
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 02 (2010-07-30)