Huawei Airbridge cBTS3612 User manual

Huawei Technologies Co., Ltd.
Administration Building, Huawei Technologies Co.,
Ltd., Bantian, Longgang District,
Shenzhen, P. R. China
Postal Code: 518129
Website: http://www.huawei.com
BOM: 31033171

Airbridge cBTS3612 CDMA Base Station
On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
On-site Maintenance Manual
8.4cm
Huawei Technologies Co., Ltd.
Huawei Technologies Co., Ltd.
Huawei Technologies Co., Ltd.
5.4cm

Airbridge cBTS3612
CDMA Base Station
On-site Maintenance Manual

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Table of Contents
i
Table of Contents
Chapter 1 Daily Maintenance...................................................1-1
1.1 Base Station Configuration ............................................1-1
1.2 Maintenance Instructions ...............................................1-8
Chapter 2 General Fault Processing ........................................2-1
2.1 MS Access Network Failure ...........................................2-1
2.1.1 Fault Description .................................................2-1
2.1.2 Troubleshooting ..................................................2-1
2.2 Software Download Failure ............................................2-9
2.2.1 Fault Description .................................................2-9
2.2.2 Troubleshooting ..................................................2-9
2.3 Base Station Initialization Failure..................................2-11
2.3.1 Fault Description ...............................................2-11
2.3.2 Troubleshooting ................................................2-11
2.4 OML Failure................................................................2-13
2.4.1 Fault Description ...............................................2-13
2.4.2 Troubleshooting ................................................2-13
2.5 Abis Signaling Link Failure...........................................2-17
2.5.1 Fault Description ...............................................2-17
2.5.2 Troubleshooting ................................................2-17
Chapter 3 Component Failure Handling...................................3-1
3.1 Component Failure Description ......................................3-1
3.1.1 Component Failure Detection...............................3-1
3.1.2 General Handling Procedure ................................3-1
3.2 Handling of Common Board Failure................................3-5

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Table of Contents
ii
3.2.1 Fault Description .................................................3-5
3.2.2 Troubleshooting ..................................................3-5
3.3 BTS Control Interface Module (BCIM).............................3-8
3.3.1 Fault Description .................................................3-8
3.3.2 Troubleshooting ..................................................3-8
3.4 BTS Control & Clock Module (BCKM)...........................3-10
3.4.1 Fault Description ...............................................3-10
3.4.2 Troubleshooting ................................................3-10
3.5 BTS Channel Process Module (BCPM).........................3-12
3.5.1 Fault Description ...............................................3-12
3.5.2 Troubleshooting ................................................3-12
3.6 BTS Resource Distribution Module (BRDM)..................3-14
3.6.1 Fault Description ...............................................3-14
3.6.2 Troubleshooting ................................................3-14
3.7 BTS Transceiver Module (BTRM).................................3-16
3.7.1 Fault Description ...............................................3-16
3.7.2 Troubleshooting ................................................3-17
3.8 BTS High Power Amplifier Unit (BHPA) ........................3-20
3.8.1 Fault Description ...............................................3-20
3.8.2 Troubleshooting ................................................3-20
3.9 Receive LNA Distribution Unit (RLDU)..........................3-23
3.9.1 Fault Description ...............................................3-23
3.9.2 Troubleshooting ................................................3-23
3.10 Power Supply Unit (PSU)...........................................3-25
3.10.1 Fault Description .............................................3-25
3.10.2 Troubleshooting...............................................3-25
3.11 The RF Antenna and Feeder......................................3-27
3.11.1 Fault Description .............................................3-27
3.11.2 Troubleshooting...............................................3-27

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Table of Contents
iii
3.12 Satellite Antenna and Feeder .....................................3-28
3.12.1 Fault Description .............................................3-28
3.12.2 Troubleshooting...............................................3-28
Chapter 4 Component Replacement........................................4-1
4.1 Common Procedure of Replacement ..............................4-1
4.1.1 Board Replacement.............................................4-1
4.1.2 Backplane Replacement ......................................4-4
4.2 Exceptional Procedure of Replacement ..........................4-8
4.2.1 BTS E1 Surge Protector (BESP) ..........................4-8
4.2.2 BTS Control & Clock Module (BCKM) ...................4-9
4.2.3 BTS Control Interface Module (BCIM).................4-10
4.2.4 BTS Channel Process Module (BCPM)...............4-10
4.2.5 BTS Resource Distribution Module (BRDM)........4-11
4.2.6 BTS FAN Module (BFAN) ..................................4-11
4.2.7 Power Supply Unit (PSU)...................................4-12
4.2.8 BTS RF Fan Module (BRFM) .............................4-12
4.2.9 BTS High Power Amplifier Unit (BHPA)...............4-13
4.2.10 BTS Transceiver Module (BTRM) .....................4-14
4.2.11 Receive LNA Distribution Unit (RLDU) ..............4-15
4.2.12 Duplexer Unit (CDU, DFU, DDU) ......................4-16
4.2.13 Optical Fiber Replacement ...............................4-18
Chapter 5 Component Indicators.............................................5-1
5.1 BTS Control & Clock Module (BCKM).............................5-1
5.2 BTS Control Interface Module (BCIM).............................5-2
5.3 BTS Channel Process Module (BCPM)...........................5-3
5.4 BTS Resource Distribution Module (BRDM)....................5-4
5.5 BTS Transceiver Module (BTRM)...................................5-5
5.6 BTS RF Fan Module (BRFM) .........................................5-6
5.7 Receive LNA Distribution Unit (RLDU)............................5-7

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Table of Contents
iv
5.8 Power Supply Unit (PSU)...............................................5-7
5.9 Base station Power & Lightening protection Lamp Indicator
board (BPLI).......................................................................5-8
5.10 BTS Fan Monitor Module (BFMM)................................5-9
Chapter 6 Switches & Interfaces..............................................6-1
6.1 BTS Control Interface Module (BCIM).............................6-1
6.2 Receive LNA Distribution Unit (RLDU)............................6-3
6.3 Cabinet-Top E1 Interface...............................................6-3

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-1
Chapter 1 Daily Maintenance
1.1 BaseStation Configuration
Base station configuration includes site configuration, antenna
and feeder configuration and cabinet configuration. Please refer to
Table 1-1for details about site configuration, Ta ble 1-2about
antenna and feeder configuration, and Figure 1-1, Figure 1-2, Figure
1-3, Figure 1-4and Table 1-3about cabinet configuration
Table 1-1Site configuration
Items contents Remarks
Site name
Site Configuration
TransmissionMode
Cascading relation
& Note:
1. For the Site configuration, thesite type and configuration mode are required to be
specified, for example: cBTS3612 S(2/2/2).
2. If there is a cascading relation among the base stations, specify the name of the
stations on the upper level and lower level.

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-2
Table 1-2Antenna and feeder configuration and radio frequency indexes
Contents Remarks
Item
Sector
1
Sector
2
Sector
3
Sector
4
Sector
5
Sector
6
Carrier
transmit
power
Standing
waveratio
Antenna
position
angle/down-
pitch angle
& Note:
1. If the station is to be configured as an omni-directional cell, specify the antenna
and feeder information in Sector 1.
2. The carrier transmit power is that measured on top of the cabinet after the station
is officially set up and running.
3. The standing wave ratio is that measured at the RF jumper connector (the end
connecting to the CDU or DFU or DDU panel) in the cabinet with a standing wave
ratio measurer.
For the cabinet configuration information, please specify in the
relevant spaces in Figure 1-1, Figure 1-2, Figure 1-3and Figure 1-4
the names of the boards and modules (use acronyms wherever
possible).
For the baseband subrack of the basic cabinet, specify in the
relevant space in Figure 1-2, (baseband subrack in Figure 1-1can

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-3
be left blank). Since the extension cabinet has no baseband subrack,
it can be ignored.
Additionally, Table 1-3also needs to be completed, which is to
make supplemental description of some of the boards or modules,
switch box can be ignored.

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-4
CDU/DFUsubrack
RFsubrack
RLDU subrack
Baseband subrack
RFsubrack
basebandpart is specified in Figure 2
Power subrack
Fan subrack
Switch Box
The baseband part is specified in Figure1-2
Figure 1-1Basic cabinet configuration

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-5
0 1 2 3 4 5 6 7 8 10 11 1213141516 1718 1920 219
Figure 1-2Configuration of baseband subrack of basic cabinet

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-6
CDU/DFUsubrack
RFsubrack
RLDU subrack
Baseband subrack
RFsubrack
basebandpart is specified in Figure 2
Power subrack
Fan subrack
Switch Box
Thebaseband subrack of the extensioncabinet
has no board configuration, leave it blank.
Figure 1-3No.1 extension cabinet configuration

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-7
CDU/DFUsubrack
RFsubrack
RLDU subrack
Basebandsubrack
RFsubrack
basebandpart is specified in Figure 2
Power subrack
Fan subrack
Switch Box
Thebasebandsubrack of the extension cabinet
hasnoboardconfiguration,leaveitblank.
Figure 1-4No.2 extension cabinet configuration

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-8
Table 1-3Supplemental description of cabinet configuration
Item Contents Remarks
BCIM
SpecifywhethertheDIP
switch and jumper are for
120Ùtwisted pair line or for
75Ùcoaxial cable.
Specify the DIP switch and
jumper'sposition.
BRDM
BTRM
Detail the optical interface
application,forexample:
which opticalinterfacesare
used,and their relations
(includingthe connection of
the BTRM of extension
cabinet with the BRDMof
the basic cabinet).
RLDU
Specify the location of S/W
switch on the panel.
1.2 Maintenance Instructions
The following steps are for your reference. Generally step 1, 2
and 3 (equipment room environment check, cabinet interior check
and dial-up test) are the basic steps required. For a thorough
maintenance, you may go through the step 4, 5 and 6 (power supply
check, lightening-proof & grounding measures and antenna and
feeder check).

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-9
I. Equipment room environment check
Table 1-4Equipment room environment check
Items Instructions Caution-demanding issues
Anti-theft
measures Check if there is any sign of burglary or equipment damage
Temperature
1.Check if the air-conditioning is
runningproperly.
2.Check the thermometer readings in
the equipment room (if there is no
thermometer, have one installed)
Temperaturerange:-5âC
~+50âC
Humidity
1.Check if there is any sign of water
seepage.
2.Check thehumidiometerreadings in
the equipment room (if there is no
humidiometer, have one installed)
Humidityrange:5%~90%.
Dust-proof
performance
1.Check if there is any visible floating
dust in the equipment room.
2. Open the cabinet door and check the
dust filter
Take measures to eliminate
the dust source, if the dust
filter has collected too many
dusts, follow the instructions
below to clean or change it.
Alarm
collection
device check
According to the actual condition of the
alarm collection device, check the alarm
performance for access control,
temperature,humidityandsmoke, etc.
If the above-mentioned items
are monitored by an alarm
collectiondevice, when there
is a problem with these items
but the alarm collection
device fails to generate an
alarm on it, that device may
have run out of order. In
suchcase,pleaserefer to
the relevant manuals for
proper measures to cope
with it.

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-10
II. Cabinet interior check
Table 1-5Cabinet Interior check
Items Instructions
Caution-demanding
issues
Fans
1.Check if the baseband subrack fan is
runningproperly.
2.Check if the RF module fan is running
properly.
Boardor
module
1.Check if the indicators of all boards and
modulesareworkingproperly.
2.Check all the RF modules and units
(includingBTRM, BHPA,RLDU,
CDU/DFU/DDU):whetherallthemodulesor
units are secured in position, screws in the
panels are properly tightened. Make sure the
panel is in a seamless contact with the front of
cabinet subrack.
1.To judge if the parts
areworkingproperly,
refer to"Chapter 5
Component
Indicators".
2. If there is anything
wrong, please refer to
"Chapter 3
ComponentFailure
Handling"for advice
III. Dial-up test
Table 1-6Dial-up test
Items Instructions
Caution-demanding
issues
Dial-uptest
around the
base station
1.Conduct dial-up tests on the base station in
each sector or cell.
2.During the dial-up test, move from sector to
sector and check if the handoff is successful.
3.Check thepower indicationofthe test
mobile station, find out if the base station
power is up to the requirements.
Driving test Conduct dial-up testswithinthecoveragearea to test the base station covering range as well
as the handoff function.
If you come across a
problem during the
test, please refer to
"Chapter 2 General
Fault Processing"and
"Chapter 3
ComponentFailure
Handling".

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-11
IV. Power supply check
Table 1-7Power supply check
Items Instructions Caution-demanding issues
Primary
PowerSupply
(AC/DC)
1.Use a multimeter to measure the
voltageat the power inlet.
2. Check the-48Vpowerindicator
3.Check theindicator of lightening
arrester
1. Range of input voltage:-40V ~
60V.
2.Normally the powerindicators
should be on all the time.
3.Normally the indicator of
lightening arrestershouldbeoff
all the time.
Secondary
power supply
(PSU)
1.Check on the maintenance
console if there is an alarm for
PSU.
2.Check the PSU panel indicator
1.Normally there should be no
PSUalarm
2.To judge whether the PSU is
workingproperly, refer to
"Chapter 5 Component
Indicators".
V. Lightening-proof and grounding check
Table 1-8Lightening-proof and grounding check
Items Instructions Caution-demanding issues
Outdoor
1.Check if the grounding clip is connected
properlywith the grounding devices (such as
an iron tower, outdoor cabling rack and
outdoor grounding bar, etc.)
2.Check if the outdoor grounding bar is
connected properly with the grounding
objects.
A multimeter can be used to
help judge if the grounding is
OK.
Indoor
1.Check if the indoor equipment (such as the
cabinet-top PE grounding bar, indoor cabling
rack)are connected properlywith the indoor
groundingbar.
2.Check if the indoor grounding bar is
connected properly with the grounding
objects.
A multimeter can be used to
help judge if the grounding is
OK

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 1 Daily Maintenance
1-12
VI. Antenna and feeder check
Table 1-9Antenna and feeder check
Items Instructions Caution-demanding issues
Antenna
and feeder
1. Check on the maintenance
console whether there is an alarm
related to the antennaand feeder
(suchasastandingwaveratio
alarm).
2. Check if theAntenna and feeder is
installedandsecuredproperly.
3. Check if the position angle of the
directional antenna of the RF
antenna and feeder is set correctly
(If there is a directional antenna).
4. Check if the feeder connector is
damaged.
5. Check if the lighteningarrester are
damaged (one is in the device box
on the antenna rack, the other isat
the GPS interface on the top of the
cabinet).
1. Antenna and feeder consists
of the RFantenna andfeeder
and satellite antennaand feeder.
2. For information about the
positionangle of the directional
antenna,pleasereferto “1.1
Base StationConfiguration”.
3. Whether the feeder and
connectorof the RFantenna and
feeder aredamagedcan be
detected by the SiteMaster
4. Whether there is visible
damage to the surface of the
lighteningarrester.

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station Chapter 2
General Fault
Processing
2-1
Chapter 2 General Fault Processing
2.1 MS Access Network Failure
When the MS is powered on, it will go through the following
processes: system determination substate, pilot channel acquisition
substate, sync channel acquisition substate, timing change substate
and finally enter the mobile station idle state and receive the correct
system message within the specific time. Only after going through all
these processes, can the MS access the network and work properly.
2.1.1 Fault Description
The MS is unable to access the CDMA network after powered
on.
2.1.2 Troubleshooting
First make sure the MS parameters (such as basic frequency,
assistant frequency, and SID,NID etc.) have been correctly set, and
then go through the following processes one by one to locate and
eliminate problems.
I. Check if the BTS is running properly
As BTS is not running, the MS will not be able to connect to the
network. The reasons that BTS is not running could be: