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BBU3900
V200
Hardware Maintenance Guide
Issue 08
Date 2011-08-30
HUAWEI TECHNOLOGIES CO., LTD.
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Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior written
consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and the
customer. All or part of the products, services and features described in this document may not be within the
purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representations
of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: [email protected]
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About This Document
Introduction
This document describes the routine hardware maintenance of the BBU3900. The maintenancetasks consist of power supply and grounding system maintenance, cabinet maintenance, and
power-on and power-off operations. This document also describes the procedures for replacing
the components.
Product Version
The following table lists the product versions related to this document.
Product Name Product Version
BBU3900 V200R010
V200R011
V200R012
Intended Audience
This document is intended for:
l Field engineers
l System engineers
Organization
1 Changes in the BBU3900 Hardware Maintenance Guide
This describes the changes in the BBU3900 Hardware Maintenance Guide
2 Maintenance Items for the BBU3900
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The maintenance items for the BBU3900 are fans, equipment surface, equipment cleanliness,
indicators, and ambient temperature.
3 Powering On/Off the BBU3900
This describes how to power on and power off the BBU3900. During power-on, you need tocheck the status of the LEDs on the BBU3900. The power-off procedure for an emergency is
different from power-off in a normal situation.
4 Replacing the Components in the OMB
This chapter describes how to replace the components in the Outdoor Mini Box (OMB), such
as the BBU, HEUA, AC/DC power equipment, DCDU-03B, and AC surge protection box.
5 Replacing Components of the BBU3900
This section describes how to replace components of the BBU, including BBU case, BBU boards
and modules, and optical modules.
6 Adding Components in the BBU3900
During the maintenance of the baseband unit (BBU), some boards may be added, such as a
universal power and environment interface unit (UPEU) or a WCDMA Baseband Process Unit
(WBBP).
7 Replacing SLPU Components
During the SLPU maintenance, the SLPU components, such as the SLPU case, UELP, and
UFLP, can be replaced as required
Conventions
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol Description
Indicates a hazard with a high level of risk, which if not
avoided, will result in death or serious injury.
Indicates a hazard with a medium or low level of risk, which
if not avoided, could result in minor or moderate injury.
Indicates a potentially hazardous situation, which if not
avoided, could result in equipment damage, data loss,
performance degradation, or unexpected results.
Indicates a tip that may help you solve a problem or save
time.
Provides additional information to emphasize or supplement
important points of the main text.
General Conventions
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The general conventions that may be found in this document are defined as follows.
Convention Description
Times New Roman Normal paragraphs are in Times New Roman.
Boldface Names of files, directories, folders, and users are in
boldface. For example, log in as user root.
Italic Book titles are in italics.
Courier New Examples of information displayed on the screen are in
Courier New.
Command Conventions
The command conventions that may be found in this document are defined as follows.
Convention Description
Boldface The keywords of a command line are in boldface.
Italic Command arguments are in italics.
[ ] Items (keywords or arguments) in brackets [ ] are optional.
{ x | y | ... } Optional items are grouped in braces and separated by
vertical bars. One item is selected.
[ x | y | ... ] Optional items are grouped in brackets and separated byvertical bars. One item is selected or no item is selected.
{ x | y | ... }* Optional items are grouped in braces and separated by
vertical bars. A minimum of one item or a maximum of all
items can be selected.
[ x | y | ... ]* Optional items are grouped in brackets and separated by
vertical bars. Several items or no item can be selected.
GUI Conventions
The GUI conventions that may be found in this document are defined as follows.
Convention Description
Boldface Buttons, menus, parameters, tabs, window, and dialog titles
are in boldface. For example, click OK .
> Multi-level menus are in boldface and separated by the ">"
signs. For example, choose File > Create > Folder.
Keyboard Operations
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The keyboard operations that may be found in this document are defined as follows.
Format Description
Key Press the key. For example, press Enter and press Tab.
Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt
+A means the three keys should be pressed concurrently.
Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means
the two keys should be pressed in turn.
Mouse Operations
The mouse operations that may be found in this document are defined as follows.
Action Description
Click Select and release the primary mouse button without moving
the pointer.
Double-click Press the primary mouse button twice continuously and
quickly without moving the pointer.
Drag Press and hold the primary mouse button and move the
pointer to a certain position.
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Contents
About This Document.....................................................................................................................ii
1 Changes in the BBU3900 Hardware Maintenance Guide......................................................1
2 Maintenance Items for the BBU3900..........................................................................................4
3 Powering On/Off the BBU3900...................................................................................................6
3.1 Powering On the BBU........................................................................................................................................7
3.2 Powering Off the BBU.......................................................................................................................................8
4 Replacing the Components in the OMB...................................................................................9
4.1 Replacing the HEUA........................................................................................................................................10
4.2 Replacing the AC/DC Power Equipment.........................................................................................................12
4.3 Replacing the DCDU-03B................................................................................................................................17
4.4 Replacing the AC Surge Protection Box..........................................................................................................20
5 Replacing Components of the BBU3900.................................................................................245.1 Query Electronic Label of the Board................................................................................................................26
5.2 Re placing the BBU in the 19-Inch Cabinet......................................................................................................26
5.3 Replacing the WMPT.......................................................................................................................................28
5.4 Replacing the UPEU.........................................................................................................................................30
5.5 Replacing the UEIU..........................................................................................................................................32
5.6 Replacing the FAN Unit...................................................................................................................................34
5.7 Re placing the UTRP.........................................................................................................................................36
5.8 Replacing the USCU........................................................................................................................................38
5.9 Replacing the WBBP........................................................................................................................................405.10 Replacing the Optical Module........................................................................................................................42
6 Adding Components in the BBU3900......................................................................................45
6.1 Adding a UPEU................................................................................................................................................46
6.1.1 Adding a UPEUc.....................................................................................................................................46
6.1.2 Adding a UPEUc to Replace the UEIU...................................................................................................47
6.1.3 Adding two UPEUc Boards to Replace the UEIU and UPEUa..............................................................49
6.1.4 Adding two UPEUc Boards to Replace Two UPEUa Boards.................................................................53
6.2 Adding a WBBP...............................................................................................................................................56
7 Replacing SLPU Components...................................................................................................58
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7.1 Replacing the SLPU.........................................................................................................................................59
7.2 Replacing the UELP.........................................................................................................................................60
7.3 Replacing the UFLP.........................................................................................................................................62
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1 Changes in the BBU3900 Hardware
Maintenance Guide
This describes the changes in the BBU3900 Hardware Maintenance Guide
08 (2011-08-30)
This is the seventh commercial issue.
Compared with issue 07 (2011-05-30), no information is added.
Compared with issue 07 (2011-05-30), this issue incorporates the following changes:
Topic Change Description
5 Replacing Components of the BBU3900 The operations performed on the M2000 are
changed.
Compared with issue 07 (2011-05-30), no information is deleted.
07 (2011-05-30)
This is the sixth commercial issue.
Compared with issue 06 (2011-03-30), no information is added.
Compared with issue 06 (2011-03-30), this issue incorporates the following changes:
Topic Change Description
5.3 Replacing the WMPT The operations for loading and activating the
WMPT software are modified.
Compared with issue 06 (2011-03-30), no information is deleted.
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06 (2011-03-30)
This is the fifth commercial issue.
Compared with issue 05 (2011-02-15), no information is added.
Compared with issue 05 (2011-02-15), this issue incorporates the following changes:
Topic Change Description
5.2 Replacing the BBU in the 19-Inch
Cabinet
l The operation for blocking cells during
the WMPT replacement is added.
l The operations for loading and activating
the WMPT software are modified.
l The operations performed on the M2000
and LMT are differentiated.
Compared with issue 05 (2011-02-15), no information is deleted.
05 (2011-02-15)
This is the fourth commercial issue.
Compared with issue 04 (2010-12-30), no information is added.
Compared with issue 04 (2010-12-30), this issue incorporates the following changes:
Topic Change Description5.1 Query Electronic Label of the Board The title is changed.
5 Replacing Components of the BBU3900 l The confirmation of the type of board in
Prerequisites is modified.
l The name of the document used as a
reference for manually synchronizing
inventory data is modified.
Compared with issue 04 (2010-12-30), no information is deleted.
04 (2010-12-30)
This is the third commercial issue.
Compared with issue 03 (2010-06-05), no information is added.
Compared with issue 03 (2010-06-05), this issue incorporates the following changes:
Topic Change Description
5.10 Replacing the Optical Module Some descriptions are optimized.
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Compared with issue 03 (2010-06-05), no information is deleted.
03 (2010-06-05)
This is the second commercial issue.
Compared with issue 02 (2010-03-05), no information is added.
Compared with issue 02 (2010-03-05), this issue incorporates the following changes:
Topic Change Description
5.4 Replacing the UPEU Some descriptions are optimized.
5.3 Replacing the WMPT
5.9 Replacing the WBBP
Compared with issue 02 (2010-03-05), no information is deleted.
02 (2010-03-05)
This is the first commercial issue.
Compared with issue 01 (2008-12-30), this issue includes the following new topics:
l 4.1 Replacing the HEUA
l 4.2 Replacing the AC/DC Power Equipment
l 4.3 Replacing the DCDU-03Bl 4.4 Replacing the AC Surge Protection Box
Compared with issue 01 (2008-12-30), no information is changed.
Compared with issue 01 (2008-12-30), no information is deleted.
01 (2008-12-30)
This is the initial field trial issue.
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2 Maintenance Items for the BBU3900
The maintenance items for the BBU3900 are fans, equipment surface, equipment cleanliness,
indicators, and ambient temperature.
Table 2-1 describes the maintenance items for the BBU3900.
Table 2-1 Maintenance items for the BBU3900
Item Checking Frequency
Description Reference Standard
Fans Weekly,
monthly, or
quarterly
Check the fans. No alarm related to the fans
is generated.
Check the
ventilation of
the BBU.
Quarterly Check the air intake
vents and air exhaust
vents of the BBU and the
rack and cabinet housing
the BBU.
The air intake vents and air
exhaust vents are clear. If
much dirt is on the air intake
vents and air exhaust vents,
maintenance personnel must
clean the vents.
Check the
equipment
surface.
Monthly or
quarterly
Check whether the
surface of the equipment
is intact and whether the
labels on the equipment
are legible.
None.
Check the
equipment
cleanliness.
Monthly or
quarterly
Check whether the
equipment is clean.
The surface and inside of the
equipment are clean.
Check the
indicators.
Monthly or
quarterly
Check whether the
indicators on the
equipment are
functional.
No indicator indicates
alarms.
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Item Checking Frequency
Description Reference Standard
Check the
ambient
temperature in
the cabinet.
Monthly or
quarterly
Check whether the
temperature in the
cabinet is normal.
The ambient temperature of
the BBU3900 must range
from –20°C to +55°C.
NOTE
The maintenance period is determined as required.
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3 Powering On/Off the BBU3900
About This Chapter
This describes how to power on and power off the BBU3900. During power-on, you need to
check the status of the LEDs on the BBU3900. The power-off procedure for an emergency is
different from power-off in a normal situation.
3.1 Powering On the BBU
Before powering on the BBU, set the power switch on the BBU to ON and determine the
operational status of the BBU based on the status of the LEDs.
3.2 Powering Off the BBU
The BBU power-off is classified into normal power-off and emergency power-off.
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3.1 Powering On the BBUBefore powering on the BBU, set the power switch on the BBU to ON and determine the
operational status of the BBU based on the status of the LEDs.
Prerequisite
l The hardware and cables of the BBU are installed.
l The voltage of the external input power ranges from -38.4 V DC to -57 V DC or +21.6 V
DC to +29 V DC.
Procedure
Step 1 Power on the BBU by setting its power switch to ON.
Step 2 Check the status of the three LEDs on the BBU panel, namely RUN, ALM, and ACT, and then proceed with the subsequent operations based on the status of the LEDs.
If... Then...
l The RUN LED is blinking (on for one
second and off for one second),
l The ALM LED is off for one second.
l The ACT LED is on.
The board is working normally. Go to Step
3.
l The RUN LED is on,
l The ALM LED is on,
l The ACT LED is off,
The board is not working properly. Rectify
the fault as follows:
l Verify that the power cable is securelyconnected.
l Reset the board.
l Remove the board and check whether
there are damaged pins. If there are
damaged pins, replace the board. If there
is no damaged pin, reinstall the board.
Check the LEDs. If the status of the LEDs are
normal, go to Step 3. If the status of the LEDs
are not normal, contact Huawei Technical
Support.
Step 3 View the status of the other LEDs on the BBU panel.
Step 4 Take corresponding actions based on the LED status.
If... Then...
The BBU is working normally, The power-on operation is complete.
The BBU is faulty, Rectify the fault, and then go to Step 1.
----End
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3.2 Powering Off the BBU
The BBU power-off is classified into normal power-off and emergency power-off.
Procedure
Step 1 Choose normal power-off or emergency power-off based on the actual situation.
If... Then...
The BBU is powered off for routine
maintenance such as an equipment swap or a
foreseeable regional blackout,
Go to Step 2 to perform the normal power-
off.
The BBU encounters emergency conditions
such as incurs electric spark, smog, water immersion, and so on,
Go to Step 3 to perform the emergency
power-off.
Step 2 To perform the normal power-off, do as follows:
1. Set the power switch of the BBU to OFF.
2. Set the MCB on the PDU that corresponds to the BBU to OFF.
3. Set the MCB on the external power device that corresponds to the BBU to OFF.
Step 3 Set the MCB on the external power device that corresponds to the BBU to OFF. If time allows,
set the power switch of the BBU to OFF , and then set the MCB on the PDU that corresponds
to the BBU to OFF.
----End
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4 Replacing the Components in the OMB
About This Chapter
This chapter describes how to replace the components in the Outdoor Mini Box (OMB), such
as the BBU, HEUA, AC/DC power equipment, DCDU-03B, and AC surge protection box.
4.1 Replacing the HEUA
The HEUA monitors the heat exchanger. The HEUA provides power to the FAN unit, monitors
the status of the FAN unit, and collects the alarm information about the cabinet and reports the
alarm to the main control unit.
4.2 Replacing the AC/DC Power Equipment
The AC/DC power equipment is used in an AC cabinet and converts external 220 V AC input power into -48 V DC power.
4.3 Replacing the DCDU-03B
The DCDU-03B distributes DC power to different components. Replacing the DCDU-03B
disrupts the power supply to the entire base station and all the services carried by the base station.
4.4 Replacing the AC Surge Protection Box
The AC surge protection box provides protection for the AC input power.
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4.1 Replacing the HEUA
The HEUA monitors the heat exchanger. The HEUA provides power to the FAN unit, monitors
the status of the FAN unit, and collects the alarm information about the cabinet and reports the
alarm to the main control unit.
Prerequisite
l The tools and materials, such as an ESD wrist strap or ESD gloves and M6 screwdriver,
are ready.
l The quantity and type of board to be replaced are confirmed, and the new board is ready.
l The authorized personnel are permitted to enter the site. The required keys are available.
Context
Figure 4-1 shows the location of the HEUA in the OMB.
Figure 4-1 Location of the HEUA
HEUA
Procedure
Step 1 Wear an ESD wrist strap or a pair of ESD gloves.
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CAUTION
Take proper ESD protection measures, for example, wear an ESD wrist strap or a pair of ESD
gloves, to prevent electrostatic damage to the boards, modules, or electronic components.
Step 2 Set the MCB labeled SW7 on the DCDU-03B to OFF to power off the HEUA.
Step 3 Record all the cable connections on the panel of the board to be replaced.
Step 4 Disconnect the power cable and monitoring cable from the HUEA, as shown in Figure 4-2.
Figure 4-2 Disconnecting cables
Step 5 Unscrew the cover plate, and then unscrew the HEUA, as shown in Figure 4-3.
Figure 4-3 Removing the HEUA
Step 6 Install the new board, tighten the screws on the board until the tightening torque reaches 0.55
N·m, then install the cover plate, tighten the screws on the cover plate until the tightening torque
reaches 0.55 N·m, and then reconnect the cables.
Step 7 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedure
l Place the replaced component into an ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the original shipping box.
l Fill in the detail information of the faulty board being replaced in the fault form.
l Contact the local Huawei office to handle the faulty component.
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4.2 Replacing the AC/DC Power Equipment
The AC/DC power equipment is used in an AC cabinet and converts external 220 V AC input
power into -48 V DC power.
Prerequisite
l The tools and materials, such as an ESD wrist strap or ESD gloves, M3 screwdriver, and
M6 screwdriver, are ready.
l The quantities and types of module to be replaced are confirmed, and the new modules are
ready.
l The authorized personnel are permitted to enter the site. The required keys are available.
Contextl The AC/DC power equipment consists of the Power Distribution Unit (PDU), Power
Supply Unit (PSU), Power Monitoring Unit (PMU), and subrack. When a component of
the AC/DC power equipment is faulty, you need to replace only the faulty component.
When the entire AC/DC power equipment is faulty, you must replace the AC/DC power
equipment.
l Figure 4-4 shows the location of the AC/DC power equipment in the cabinet.
Figure 4-4 Location of the AC/DC power equipment in the cabinet
1
(1) AC/DC power equipment
l Figure 4-5 shows the locations of the components in the AC/DC power equipment.
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Figure 4-5 Locations of the components in the AC/DC power equipment
4
3
2
1
(1) PDU (2) PSU (3) PMU (4) Subrack
l Replacing the AC/DC power equipment, PSU, PDU, or subrack disrupts all the services
carried by the base station. Therefore, the components should be replaced in 20 minutes.
Procedure
Step 1 Power off the AC/DC power equipment.
Step 2 Wear an ESD wrist strap or a pair of ESD gloves.
CAUTION
Take proper ESD protection measures, for example, wear an ESD wrist strap or a pair of ESD
gloves, to prevent electrostatic damage to the boards, modules, or electronic components.
Step 3 Record all the cable connections on the panel of the component to be replaced.
Step 4 Disconnect the cables.
1. Disconnect the DC output power cable from the PDU, as shown in Figure 4-6.
Figure 4-6 Disconnecting the cable from the PDU
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2. Disconnect the monitoring signal cable from the PMU, as shown in Figure 4-7.
Figure 4-7 Disconnecting the cable from the PMU
3. Disconnect the AC input power cable and DC output power cable from the subrack, as
shown in Figure 4-8.
Figure 4-8 Disconnecting the cables from the subrack
Step 5 Remove the component to be replaced.
1. Loosen the M3 screw on the panel of the PDU, and then remove the PDU, as shown in
Figure 4-9.
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Figure 4-9 Removing the PDU
1
2
2. Loosen the M3 screw on the panel of the PSU, and then remove the PSU, as shown in
Figure 4-10.
Figure 4-10 Removing the PSU
1
2
3. Loosen the M3 screw on the panel of the PMU, and then remove the PMU, as shown in
Figure 4-11.
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Figure 4-11 Removing the PMU
1
2
4. Loosen the four M6 screws on the mounting ears of the subrack, and then remove the
subrack, as shown in Figure 4-12.
Figure 4-12 Removing the subrack
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NOTE
l If you have confirmed that the subrack is faulty and needs to be replaced, you must remove the
PDU, PSU, and PMU before removing the subrack from the cabinet.
l If you have confirmed that the entire AC/DC power equipment is faulty, you need to remove
only the AC/DC power equipment from the cabinet.
Step 6 If the PMU needs to be replaced, set the DIP switch on the new PMU according to the settings
of the DIP switch on the faulty PMU. If required, query the information about the DIP switch
by referring to AC/DC Power Equipment.
Step 7 Install the new component.
1. Install the AC/DC power equipment or subrack, tighten the screws on the mounting ears
until the tightening torque reaches 2 N·m, and then install related cables.
2. Install the PDU, PSU, or PMU, tighten the screws on the panel until the tightening torque
reaches 0.55 N·m, and then install related cables.
Step 8 Check whether the AC/DC power equipment works properly according to the status of the LEDson the AC/DC power equipment, BBU, and RRU.
NOTE
For details about the status of the LEDs on the AC/DC power equipment, BBU, and RRU, see the
corresponding hardware description document.
Step 9 Power on the AC/DC power equipment.
Step 10 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedurel Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the original shipping box.
l Fill in the detail information of the faulty board being replaced in the fault form.
l Contact the local Huawei office to handle the faulty component.
4.3 Replacing the DCDU-03B
The DCDU-03B distributes DC power to different components. Replacing the DCDU-03B
disrupts the power supply to the entire base station and all the services carried by the base station.
Prerequisite
l The tools and materials, such as an ESD wrist strap or ESD gloves and M6 screwdriver,
are ready.
l The quantity and type of module to be replaced are confirmed, and the new modules are
ready.
l The authorized personnel are permitted to enter the site. The required keys are available.
Context
l Figure 4-13 shows the location of the DCDU-03 in the OMB.
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Figure 4-13 Location of the DCDU-03B
DCDU
l Replacing the DCDU-03B disrupts all the services carried by the base station. Therefore,
the DCDU-03B should be replaced within 20 minutes.
Procedure
Step 1 Power off the DCDU-03B.
Step 2 Wear an ESD wrist strap or a pair of ESD gloves.
CAUTION
Take proper ESD protection measures, for example, wear an ESD wrist strap or a pair of ESD
gloves, to prevent electrostatic damage to the boards, modules, or electronic components.
Step 3 Record all the cable connections on the panel of the board to be replaced.
Step 4 Disconnect the power cables from the DCDU-03B, as shown in Figure 4-14.
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Figure 4-14 Disconnecting cables
Step 5 Loosen the four M6 screws on the panel, and then remove the DCDU-03B, as shown in Figure
4-15.
Figure 4-15 Removing the DCDU-03B
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Step 6 Install the new DCDU-03B, tighten the screws on the DCDU-03B until the tightening torque
reaches 2 N·m, and then reconnect the cables.
Step 7 Power on the DCDU-03B.
Step 8 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedure
l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the original shipping box.
l Fill in the detail information of the faulty board being replaced in the fault form.
l Contact the local Huawei office to handle the faulty component.
4.4 Replacing the AC Surge Protection BoxThe AC surge protection box provides protection for the AC input power.
Prerequisite
l The tools and materials, such as an ESD wrist strap or ESD gloves and M4 screwdriver,
are ready.
l The quantity and type of AC surge protection box to be replaced are confirmed, and the
new AC surge protection box is ready.
l The authorized personnel are permitted to enter the site. The required keys are available.
Context
l Figure 4-16 shows the location of the AC surge protection box in the OMB.
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Figure 4-16 Location of the AC surge protection box
1
(1) AC surge protection box
l Replacing the AC surge protection box disrupts the surge protection function of the base
station. Therefore, the AC surge protection box should be replaced in 10 minutes.
Procedure
Step 1 Power off the base station in the normal situation.
Step 2 Wear an ESD wrist strap or a pair of ESD gloves.
CAUTION
Take proper ESD protection measures, for example, wear an ESD wrist strap or a pair of ESD
gloves, to prevent electrostatic damage to the boards, modules, or electronic components.
Step 3 Record all the cable connections on the panel of the AC surge protection box to be replaced.
Step 4 Disconnect the power cable and monitoring cable from the AC surge protection box, as shown
in Figure 4-17.
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Figure 4-17 Disconnecting cables
Step 5 Loosen the M4 screw on the panel, and then remove the AC surge protection box, as shown in
Figure 4-18.
Figure 4-18 Removing the AC Surge Protection Box
Step 6 Install the new AC surge protection box, tighten the screw on the panel until the tightening torque
reaches 1.2 N·m, and then reconnect the cables.
Step 7 Power on the base station.
Step 8 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
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Follow-up Procedure
l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the original shipping box.
l Fill in the detail information of the faulty board being replaced in the fault form.
l Contact the local Huawei office to handle the faulty component.
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5 Replacing Components of the BBU3900
About This Chapter
This section describes how to replace components of the BBU, including BBU case, BBU boards
and modules, and optical modules.
5.1 Query Electronic Label of the Board
Before replacing a board, you need to query the electronic label of the board at the remote end
to confirm the type of board to be replaced.
5.2 Replacing the BBU in the 19-Inch Cabinet
This section describes how to replace the BBU in a 19-inch cabinet, such as in an APM30 or
TMC.
5.3 Replacing the WMPT
The WCDMA main processing & transmission unit (WMPT) processes signals and manages
resources on other boards.
5.4 Replacing the UPEU
The Universal Power and Environment Interface Unit (UPEU) is configured in the BBU and it
converts –48 V DC or +24 V DC power into +12 V DC.
5.5 Replacing the UEIU
The Universal Environment Interface Unit (UEIU) provides channels for transmitting the
monitoring signals from the service board to the BBU.
5.6 Replacing the FAN Unit
The FAN unit is located in the BBU. The FAN unit and the air inlet box form a ventilation loop,
which ensures ventilation and heat dissipation. Replacing the FAN unit may lead to
overtemperature alarms due to interruption of heat dissipation in the BBU. The services,
however, are not affected.
5.7 Replacing the UTRP
The Universal Transmission Processing unit (UTRP) in the BBU3900 provides ports for
transmission.
5.8 Replacing the USCU
The Universal Satellite card and Clock Unit (USCU) in the BBU receives clock signals, such as
GPS, RGPS, BITS, and M-1PPS signals. In addition, it transmits or receives 1PPS+TOD clock signals.
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5.9 Replacing the WBBP
The WCDMA Baseband Process Unit (WBBP) is configured in the BBU and it processes
baseband signals.
5.10 Replacing the Optical Module
The optical module implements optical-electrical conversion, thus enabling optical transmission between the BBU and other devices.
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5.1 Query Electronic Label of the Board
Before replacing a board, you need to query the electronic label of the board at the remote end
to confirm the type of board to be replaced.
1. Run the LST BRDINFO command on the LMT.
2. Confirm the type of board to be replaced according to the Boardtype and Description
fields in the queried result. Ensure that the new board is of the same type by checking the
information indicated by the bar code on the label of the panel or handle of the new board.
Figure 5-1 shows a label containing the bar code.
Figure 5-1 A label containing the bar code
5.2 Replacing the BBU in the 19-Inch CabinetThis section describes how to replace the BBU in a 19-inch cabinet, such as in an APM30 or
TMC.
Prerequisite
l The tools and materials, such as an ESD wrist strap or ESD gloves and M6 screwdriver,
are ready.
l The type of BBU to be replaced and its quantity are confirmed, and the new BBU is ready.
l The authorized personnel are permitted to enter the site. The required keys are available.
Context
Replacing the BBU in a 19-inch cabinet disrupts all the services carried by the NodeB. Therefore,
the BBU should be replaced within 20 minutes.
Procedure
Step 1 Instruct the M2000 administrator to perform the following operations for the replacement of the
BBU:
1. Upload the configuration files of the base station on the FTP server of the M2000. For
details, see the Base Station Commissioning Guide.
Step 2 Power off the BBU. For details, see 3.2 Powering Off the BBU.
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Follow-up Procedure
l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the packing box of the new component.
l Fill in the fault form with the details of the replaced component.
l Contact the local Huawei office to handle the faulty component.
5.3 Replacing the WMPT
The WCDMA main processing & transmission unit (WMPT) processes signals and manages
resources on other boards.
Prerequisite
l After confirming the type of a faulty board, do as follows:
–If the board can be queried online, run the associated command on the LMT to 5.1
Query Electronic Label of the Board.
– If the board is faulty and cannot be queried online, query the board information offline
on the M2000. For details, see Querying Inventory Data.
l Tools and materials, such as an ESD wrist strap or ESD gloves and M3 screwdrivers, are
ready.
l Associated personnel have been permitted to access the site and obtained required keys.
Context
l Figure 5-3 shows the position of the WMPT in the BBU.
Figure 5-3 Position of the WMPT in the BBU
WMPT
WMPT
ETH FE0 FE1 USBTST E1/T1 RSTGPS
RUNALMACT
TX RX
l The WMPT is hot-swappable.
l If no standby WMPT is configured, replacing the WMPT interrupts all services carried by
the NodeB. Therefore, the WMPT must be replaced within 10 minutes.
Procedure
Step 1 Instruct the M2000 administrator to perform the following operations before replacing the
WMPT:
1. Upload the NodeB configuration file on the M2000 by using the file transfer protocol (FTP).
For details, see Creating NodeB Commissioning Tasks.
2. On the NodeB, run the BLK LOCELL command to block all the cells of the NodeB.
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Step 2 Wear an ESD wrist strap or ESD gloves.
WARNINGTake proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 3 Record all the cable connections on the panel of the board to be replaced.
Step 4 Disconnect the transmission cable from the WMPT. If a surge protection board is configured,
the surge protection transfer cable also needs to be disconnected, as shown in Figure 5-4.
Figure 5-4 Disconnecting the cable
Step 5 Remove the two M3 screws on the panel, and then pull out the WMPT, as shown in Figure
5-5.
Figure 5-5 Removing the WMPT
2
1
Step 6 Set the DIP switches on the new board according to the settings of the DIP switches on the faulty
board. For details, see WMPT.
Step 7 Install the new board, tighten the screws on the board to 0.6 N·m, and then reconnect the cables.
Step 8 Check the status of the new board by observing the status of indicators. For details about the
status of the indicators, see WMPT.
Step 9 Perform the following operations on the LMT:
1. Upgrade the NodeB software and configuration file. For details, see Upgrading the NodeB
Software.
2. Check whether any alarm is reported. For details, see Browsing Alarms. If an alarm is
reported, clear the alarm by referring to Querying Alarm Handling Suggestions.
Step 10 Perform the following operations on the M2000:
1. On the NodeB, run the UBL LOCELL command to unblock all the cells of the NodeB.
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2. Synchronize the inventory information manually. For details, see Synchronizing Inventory
Data.
3. Set the status from TESTING to NORMAL. For details, see Setting the Maintenance
Mode.
Step 11 Take off the ESD wrist strap or ESD gloves, and pack up all the tools.
----End
Follow-up Procedure
l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the packing box of the new component.
l Fill in the fault form with the detailed information of the replaced component.
l Contact the local Huawei office to handle the faulty component.
5.4 Replacing the UPEU
The Universal Power and Environment Interface Unit (UPEU) is configured in the BBU and it
converts –48 V DC or +24 V DC power into +12 V DC.
Prerequisite
l After confirming the type of a faulty board, do as follows:
– If the board can be queried online, run the associated command on the LMT to 5.1
Query Electronic Label of the Board.
– If the board is faulty and cannot be queried online, query the board information offline
on the M2000. For details, see Querying Inventory Data.
l The tools and materials are ready, such as the ESD wrist strap or ESD gloves and M3
screwdriver.
l The associated personnel have been permitted to access the site and obtained the required
keys.
Context
l Figure 5-6 shows the position of the UPEU in the BBU.
Figure 5-6 Position of the UPEU
UPEU
l
Replacing the UPEU disrupts the power supply to the BBU, and accordingly disruptsservices carried by the BBU. Therefore, the UPEU should be replaced within 10 minutes.
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Procedure
Step 1 Instruct the M2000 administrator to perform the following operations before replacing the
UPEU:
1. On the NodeB, run the BLK LOCELL command to block all the cells working in UMTSmode.
CAUTION
Replacing the UPEU disrupts all the services carried by the base station if no standby UPEU is
configured.
Step 2 Power off the BBU. For details, see Powering Off the BBU3900.
Step 3 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 4 Record all the cable connections on the panel of the module to the replaced.
Step 5 Disconnect the power cable, monitoring cable, and alarm cable from the UPEU, as shown in
Figure 5-7.
Figure 5-7 Disconnecting the cable
Step 6 Remove the two M3 screws on the panel, and then pull out the UPEU, as shown in Figure
5-8.
Figure 5-8 Removing the UPEU
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Step 7 Install the new board, tighten the screws on the board until the tightening torque reaches 0.6
N·m, and then reconnect the cables.
Step 8 Power on the BBU. For details, see Powering on the BBU3900.
Step 9 Check the status of the LEDs to determine whether the new board works properly. For detailsabout the status of the LEDs, see UPEU.
Step 10 Perform the following operations on the local maintenance terminal (LMT):
1. On the UMTS side, check whether any alarm is reported on the NodeB LMT. For details,
see Browsing Alarms. If an alarm is reported, clear the alarm by referring to Querying
Alarm Handling Suggestions.
Step 11 Inform the M2000 administrator that the replacement is complete, and then instruct the
administrator to perform the following operations:
1. On the NodeB, run the UBL LOCELL command to unblock all cells working in UMTS
mode.
2. Synchronize the inventory information manually. For details, see Synchronizing Inventory
Data.
Step 12 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedure
l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the packing box of the new component.
lFill in the fault form with the detail information of the replaced component.
l Contact the local Huawei office to handle the faulty component.
5.5 Replacing the UEIU
The Universal Environment Interface Unit (UEIU) provides channels for transmitting the
monitoring signals from the service board to the BBU.
Prerequisite
l After confirming the type of a faulty board, do as follows:
– If the board can be queried online, run the associated command on the LMT to 5.1
Query Electronic Label of the Board.
– If the board is faulty and cannot be queried online, query the board information offline
on the M2000. For details, see Querying Inventory Data.
l The tools and materials are ready, such as the ESD wrist strap or ESD gloves and M3
screwdriver.
l The associated personnel have been permitted to access the site and obtained the required
keys.
Context
l Figure 5-9 shows the position of the UEIU in the BBU.
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Figure 5-9 Position of the UEIU
UEIU
l The board is hot-swappable.
l Replacing the UEIU may cause the failure to monitor the external equipment. Therefore,
the UEIU must be replaced within five minutes.
Procedure
Step 1 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 2 Record all the cable connections on the panel of the module to the replaced.
Step 3 Disconnect the monitoring cable and alarm cable from the UEIU, as shown in Figure 5-10.
Figure 5-10 Disconnecting the cable
Step 4 Remove the two M3 screws on the panel, and then pull out the UEIU, as shown in Figure
5-11.
Figure 5-11 Removing the UEIU
2
1
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Step 5 Install the new board, tighten the screws on the board until the tightening torque reaches 0.6
N·m, and then reconnect the cables.
Step 6 Perform the following operations on the local maintenance terminal (LMT):
1. On the UMTS side, check whether any alarm is reported on the NodeB LMT. For details,
see Browsing Alarms. If an alarm is reported, clear the alarm by referring to Querying
Alarm Handling Suggestions.
Step 7 Perform following operations on the M2000:
1. Synchronize the inventory information manually. For details, see Synchronizing Inventory
Data.
Step 8 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedure
lPlace the replaced component into the ESD box or bag. Then, place the ESD box or baginto a carton padded with foam or into the packing box of the new component.
l Fill in the fault form to record detailed information of the replaced components.
l Contact the local Huawei office to handle the faulty component.
5.6 Replacing the FAN UnitThe FAN unit is located in the BBU. The FAN unit and the air inlet box form a ventilation loop,
which ensures ventilation and heat dissipation. Replacing the FAN unit may lead to
overtemperature alarms due to interruption of heat dissipation in the BBU. The services,
however, are not affected.
Prerequisite
l After confirming the type of a faulty board, do as follows:
– If the board can be queried online, run the associated command on the LMT to 5.1
Query Electronic Label of the Board.
– If the board is faulty and cannot be queried online, query the board information offline
on the M2000. For details, see Querying Inventory Data.
l The tools and materials are ready, such as the ESD wrist strap or ESD gloves and M3
screwdriver.
l The associated personnel have been permitted to access the site and obtained the required
keys.
Context
l Figure 5-12 shows the position of the FAN unit in the BBU.
Figure 5-12 Position of the FAN unit
FAN
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l The unit is hot-swappable.
l Replacing the FAN unit may lead to overtemperature alarms due to interruption of heat
dissipation in the BBU. Therefore, the FAN unit should be replaced within three minutes.
Procedure
Step 1 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 2 Remove the two M3 screws on the panel, and then pull out the FAN unit, as shown in Figure
5-13.
Figure 5-13 Removing the FAN unit
1 2
CAUTION
When removing the FAN unit, do not touch the rotating fans to avoid injury of your hands.
Step 3 Install the new unit, tighten the screws on the unit until the tightening torque reaches 0.6 N·m.
Step 4 Check the status of the LEDs to determine whether the new module works properly. For details
about the status of the LEDs, see FAN.
Step 5 Perform the following operations on the local maintenance terminal (LMT):
1. On the UMTS side, check whether any alarm is reported on the NodeB LMT. For details,
see Browsing Alarms. If an alarm is reported, clear the alarm by referring to Querying
Alarm Handling Suggestions.
Step 6 Perform following operations on the M2000:
1. Synchronize the inventory information manually. For details, see Synchronizing InventoryData.
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Step 7 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedurel Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the packing box of the new component.
l Fill in the fault form to record detailed information of the replaced components.
l Contact the local Huawei office to handle the faulty component.
5.7 Replacing the UTRP
The Universal Transmission Processing unit (UTRP) in the BBU3900 provides ports for
transmission.
Prerequisite
l After confirming the type of a faulty board, do as follows:
– If the board can be queried online, run the associated command on the LMT to 5.1
Query Electronic Label of the Board.
– If the board is faulty and cannot be queried online, query the board information offline
on the M2000. For details, see Querying Inventory Data.
l The tools and materials are ready, such as the ESD wrist strap or ESD gloves and M3
screwdriver.
l The associated personnel have been permitted to access the site and obtained the required
keys.
Context
l Figure 5-14 shows the recommended position of the UTRP in the BBU.
Figure 5-14 Position of the UTRP
RUN
ALM
ACT
E1/T1(0-3)
UTRP
E1/T1(4-7)
UTRP
l The board is hot-swappable.
Procedure
Step 1 Instruct the M2000 administrator to perform the following preparations for the replacement of
the UTRP:
1. On the NodeB, run the BLK LOCELL command to block all the cells working in UMTSmode.
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Step 2 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 3 Record all the cable connections on the panel of the module to the replaced.
Step 4 Disconnect the transmission cable from the UTRP. If a surge protection board is configured, the
surge protection transfer cable also needs to be disconnected, as shown in Figure 5-15.
Figure 5-15 Disconnecting the cable
Step 5 Loosen the two M3 screws on the panel, and then remove the UTRP, as shown in Figure
5-16.
Figure 5-16 Removing the UTRP
Step 6 Set the DIP switches on the new board according to the settings of the DIP switches on the faulty
board. If required, query the information about the DIP switch by referring to UTRP.
Step 7 Install the new board, tighten the screws on the board until the tightening torque reaches 0.6
N·m, and then reconnect the cables.
Step 8 Check the status of the LEDs to determine whether the new board works properly. For details
about the status of the LEDs, see UTRP.
Step 9 Perform the following operations on the local maintenance terminal (LMT):
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1. On the UMTS side, check whether any alarm is reported on the NodeB LMT. For details,
see Browsing Alarms. If an alarm is reported, clear the alarm by referring to Querying
Alarm Handling Suggestions.
Step 10 Perform following operations on the M2000:
1. On the NodeB, run the UBL LOCELL command to unblock all cells working in UMTS
mode.
2. Synchronize the inventory information manually. For details, see Synchronizing Inventory
Data.
Step 11 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedure
l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the packing box of the new component.l Fill in the fault form to record detailed information of the replaced components.
l Contact the local Huawei office to handle the faulty component.
5.8 Replacing the USCU
The Universal Satellite card and Clock Unit (USCU) in the BBU receives clock signals, such as
GPS, RGPS, BITS, and M-1PPS signals. In addition, it transmits or receives 1PPS+TOD clock
signals.
Prerequisitel After confirming the type of a faulty board, do as follows:
– If the board can be queried online, run the associated command on the LMT to 5.1
Query Electronic Label of the Board.
– If the board is faulty and cannot be queried online, query the board information offline
on the M2000. For details, see Querying Inventory Data.
l The tools and materials are ready. They are the ESD wrist strap or ESD gloves and
screwdriver.
l The associated personnel have been permitted to access the site and obtained the required
keys.
Context
l Figure 5-17 shows the position of the USCU in the BBU.
Figure 5-17 Position of the USCU
USCU
USCUALMALM
RUNRUN
ACT
ACT
TOD1
TOD1
GPS
RX RXTX TX
BITS
Y
RGPS
M1PPS
TOD0
GPSRX+ RX-TX+ TX-
BITS GRE E NI N
YE L L O W O UT
RGPS
M-1PPS
TOD0
1S 1SGNDPWR
1S+ 1S-GNDPWR
USCU
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l The board is hot-swappable.
Procedure
Step 1 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 2 Record all the cable connections on the panel of the module to the replaced.
Step 3 Remove the GPS clock signal cable on the USCU, as shown in Figure 5-18.
Figure 5-18 Disconnecting the cable
Step 4 Remove the two M3 screws on the panel, and then pull out the USCU, as shown in Figure5-19.
Figure 5-19 Removing the USCU.
2
1
Step 5 Install the new board, tighten the screws on the board until the tightening torque reaches 0.6
N·m, and then reconnect the cables.
Step 6 Check the status of the LEDs to determine whether the new board works properly. For details
about the status of the LEDs, see USCU.
Step 7 Perform the following operations on the local maintenance terminal (LMT):
1. On the UMTS side, check whether any alarm is reported on the NodeB LMT. For details,
see Browsing Alarms. If an alarm is reported, clear the alarm by referring to QueryingAlarm Handling Suggestions.
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Step 8 Perform following operations on the M2000:
1. Synchronize the inventory information manually. For details, see Synchronizing Inventory
Data.
Step 9 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedure
l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the packing box of the new component.
l Fill in the fault form to record detailed information of the replaced components.
l Contact the local Huawei office to handle the faulty component.
5.9 Replacing the WBBP
The WCDMA Baseband Process Unit (WBBP) is configured in the BBU and it processes
baseband signals.
Prerequisite
l After confirming the type of a faulty board, do as follows:
– If the board can be queried online, run the associated command on the LMT to 5.1
Query Electronic Label of the Board.
–If the board is faulty and cannot be queried online, query the board information offlineon the M2000. For details, see Querying Inventory Data.
l The tools and materials are ready, such as the ESD wrist strap or ESD gloves and M3
screwdriver.
l The associated personnel have been permitted to access the site and obtained the required
keys.
Context
l Figure 5-20 shows the position of the WBBP in the BBU.
Figure 5-20 Position of the WBBP
WBBP
WBBP TX RX
CPRI0/EIH0 CPRI1/EIH1 CPRI2/EIH2
T X R X T X R XRUNALMACT
l The WBBP is hot-swappable.
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Procedure
Step 1 Instruct the M2000 administrator to perform the following operations before replacing the
WBBP:
1. On the NodeB, run the BLK BRD command to block the WBBP.
Step 2 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 3 Record all the cable connections on the panel of the module to be replaced.
Step 4 Disconnect the CPRI cable from the WBBP, as shown in Figure 5-21.
Figure 5-21 Disconnecting the cable
Step 5 Remove the two M3 screws on the panel, and then pull out the WBBP, as shown in Figure
5-22.
Figure 5-22 Removing the WBBP
2
1
Step 6 Install the new board, tighten the screws on the board until the tightening torque reaches 0.6
N·m, and then reconnect the cables.
Step 7 Check the status of the LEDs to determine whether the new board works properly. For details
about the status of the LEDs, see WBBP.
Step 8 Perform following operations on the LMT:
1. Check whether any alarm is reported. For details, see Browsing Alarms. If an alarm isreported, clear the alarm by referring to Querying Alarm Handling Suggestions.
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Step 9 Inform the M2000 administrator that the replacement is complete, and then instruct the
administrator to perform the following operations:
1. On the NodeB, run the UBL BRD command to unblock the WBBP.
2. Synchronize the inventory information manually. For details, see Synchronizing Inventory
Data.
Step 10 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedure
l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the packing box of the new component.
l Fill in the fault form to record detailed information of the replaced components.
l Contact the local Huawei office to handle the faulty component.
5.10 Replacing the Optical Module
The optical module implements optical-electrical conversion, thus enabling optical transmission
between the BBU and other devices.
Prerequisite
l The tools and materials are ready. They are the ESD wrist strap or ESD gloves.
l All the types of optical module are ready.
l The associated personnel have been permitted to access the site and obtained the requiredkeys.
Context
l Figure 5-23 shows the position of the optical module on a board.
Figure 5-23 Position of the optical module
1
(1) Optical module
l Optical modules are hot-swappable.
l Replacing the optical module disrupts the services on this port.
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Procedure
Step 1 Wear an ESD wrist strap or a pair of ESD gloves.
CAUTION
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or other electronic components.
Step 2 Prepare the optical module of the same type as the faulty optical module according to the label
on the module.
NOTE
The optical module to be replaced or to be installed must have a matching rate with the corresponding
CPRI port.
Step 3 Record the position of the faulty optical module on the board.
Step 4 Press the latch on the optical cable connector, and then remove the connector from the faulty
optical module, as shown in Figure 5-24.
Figure 5-24 Disconnecting the cable
WARNING
Do not look into the optical module without eye protection after the optical cable is removed
from the optical module.
Step 5 Turn the puller on the faulty optical module outwards, hold the puller and take the faulty optical
module out of the slot, and then remove the optical module from the BBU, as shown in Figure5-25.
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Figure 5-25 Removing the optical module
Step 6 Install the new optical module onto the BBU.
Step 7 Remove the dustproof caps from the new optical module and optical connector, and then insert
the optical cable connector into the new optical module.
Step 8 Check whether the transmission is proper according to the status of the LEDs on the board. For
details about the status of the LEDs on the board, see the related hardware description.
Step 9 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedure
l Put the replaced components into an ESD box or bag. Then, put the ESD box or bag into
a carton padded with foam or into the packing boxes of the new components.
l Fill in the fault form to record detailed information of the replaced components.
l Contact the local Huawei office to handle the faulty components.
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6 Adding Components in the BBU3900
About This Chapter
During the maintenance of the baseband unit (BBU), some boards may be added, such as a
universal power and environment interface unit (UPEU) or a WCDMA Baseband Process Unit
(WBBP).
6.1 Adding a UPEU
The power of the baseband unit (BBU) may exceed the power supported by the universal power
and environment interface unit (UPEU). Therefore, a UPEUc is required.
6.2 Adding a WBBP
This section describes how to install a WCDMA baseband processing unit (WBBP) when aWBBP is required.
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6.1 Adding a UPEU
The power of the baseband unit (BBU) may exceed the power supported by the universal power
and environment interface unit (UPEU). Therefore, a UPEUc is required.
NOTE
If the BBU is installed in an outdoor mini box (OMB) or indoor mini box (IMB03) with an AC power
supply, the BBU cannot be equipped with two UPEUs.
6.1.1 Adding a UPEUc
If a universal power and environment interface unit (UPEU) is already installed in the baseband
unit (BBU), a UPEUc can be added.
Prerequisitel The tools and materials are ready, such as the electrostatic discharge (ESD) wrist strap or
ESD gloves and M3 screwdriver.
l Associated personnel have obtained keys and site access permission.
Context
If the power of the BBU exceeds the power supported by the UPEU, a UPEUc must be added.
A UPEUa is already installed in slot 19 and the new UPEUc can be installed in slot 18, as shown
in Figure 6-1.
Figure 6-1 Slot for holding the new UPEUc
Procedure
Step 1 Wear the ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear the ESD wrist strap or ESD gloves,
to prevent electrostatic damage to the boards, modules, or electronic components.
Step 2 Install a UPEUc in slot 18 and tighten the screws on the panel to 0.6 N·m, as shown in Figure6-2.
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Figure 6-2 Installing a UPEUc
Step 3 Install a power cable for the UPEUc. For details about the operation, see related installation
guide.
1. Link the 3V3 power connector at one end of the cable to the –48V port on the UPEUc, and
then tighten the screws on the connector to 0.25 N·m.
2. Link the other end of the cable to the power supply equipment onsite.
Step 4 Power on the BBU. For details, see Powering on the BBU3900.
Step 5 Check the status of the indicators to determine whether the new board works properly by referring
to UPEU.
Step 6 Perform the following operations on the Local Maintenance Terminal (LMT):
1. On the NodeB, run the ADD BRD command to configure the installed UPEUc.
2. On the eNodeB, run the ADD BRD command to configure the installed UPEUc.
3. On the BSC, run the ADD BTSBRD command to configure the installed UPEUc.
Step 7 Take off the ESD wrist strap or ESD gloves, and pack up all the tools.
----End
6.1.2 Adding a UPEUc to Replace the UEIU
If a universal power and environment interface unit (UPEU) and a universal environment
interface unit (UEIU) are installed in the BBU, you can replace the UEIU with a UPEUc.
Prerequisite
l The tools and materials are ready, such as the electrostatic discharge (ESD) wrist strap or
ESD gloves and M3 screwdriver.
l Associated personnel have obtained keys and site access permission.
Context
A UPEUa is installed in slot 19 and the UEIU to be removed is installed in slot 18, as shown in
Figure 6-3.
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Figure 6-3 Slot of the UEIU to be removed
Procedure
Step 1 Instruct the M2000 administrator to perform the following operations:
1. Run the LST ALMPORT command to record the configuration data for alarms on the
board.
2. Run the RMV BRD command to remove the UEIU.
Step 2 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 3 Record all the cable connections on the panel of the module to the replaced.
Step 4 Disconnect the monitoring cable and alarm cable from the UEIU, as shown in Figure 6-4.
Figure 6-4 Disconnecting the cable
Step 5 Remove the two M3 screws on the panel, and then pull out the UEIU, as shown in Figure 6-5.
Figure 6-5 Removing the UEIU
2
1
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Step 6 Install a UPEUc in slot 18 and tighten the screws on the panel to 0.6 N·m, as shown in Figure
6-6.
Figure 6-6 Installing a UPEUc
Step 7 Install a power cable for the UPEUc. For details about the operation, see related installation
guide.
1. Link the 3V3 power connector at one end of the cable to the –48V port on the UPEUc, and
then tighten the screws on the connector to 0.25 N·m.
2. Link the other end of the cable to the power supply equipment onsite.
Step 8 Install the cables originally connected to the UEIU to the correct ports on the UPEUc based on
the recorded cable connections of the UEIU.
Step 9 Power on the BBU. For details, see Powering on the BBU3900.
Step 10 Check the status of the indicators to determine whether the new board works properly by referring
to UPEU.
Step 11 Perform the following operations on the Local Maintenance Terminal (LMT):
1. On the NodeB, run the ADD BRD command to configure the installed UPEUc.
2. On the eNodeB, run the ADD BRD command to configure the installed UPEUc.
3. On the BSC, run the ADD BTSBRD command to configure the installed UPEUc.
4. On the NodeB, eNodeB, and BSC, Run the SET ALMPORT command to restore the alarm
configuration data.
Step 12Take off the ESD wrist strap or ESD gloves, and pack up all the tools.
----End
Follow-up Procedure
Place the removed component into the ESD box or bag. Then, place the ESD box or bag into a
carton padded with foam or into the packing box of the new component.
6.1.3 Adding two UPEUc Boards to Replace the UEIU and UPEUa
If a universal power and environment interface unit (UPEUa) and a universal environment
interface unit (UEIU) are installed in the baseband unit (BBU), you can replace the UPEUa andUEIU with two UPEUc boards.
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Prerequisite
l The tools and materials are ready, such as the electrostatic discharge (ESD) wrist strap or
ESD gloves and M3 screwdriver.
l Associated personnel have obtained keys and site access permission.
Context
The UEIU to be removed is installed in slot 18 and the UPEUa to be removed is installed in slot
19, as shown in Figure 6-7.
Figure 6-7 Slots of the UEIU and UPEUa
Procedure
Step 1 Check whether the alarm cables are connected to the EXT_ALM ports on the UEIU and the
UPEUa. If alarm cables are not connected to the ports, go to step 3. If alarm cables are connected
to the ports, go to step 2.
Step 2 Instruct the M2000 administrator to perform the following operations:
1. Run the LST ALMPORT command to record the alarm configuration data on the UEIUand the UPEUa.
2. Run the RMV BRD command to remove the UEIU and the UPEUa.
Step 3 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 4 Record all the cable connections on the panels of the UEIU and UPEUa.
Step 5 Disconnect the monitoring cable and alarm cable from the UEIU, as shown in Figure 6-8.
Figure 6-8 Disconnecting the cable
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Step 6 Remove the two M3 screws on the panel, and then pull out the UEIU, as shown in Figure 6-9.
Figure 6-9 Removing the UEIU
2
1
Step 7 Install a UPEUc in slot 18 and tighten the screws on the panel to 0.6 N·m, as shown in Figure
6-10.
Figure 6-10 Installing a UPEUc
Step 8 Install a power cable for the UPEUc. For details about the operation, see related installation
guide.
1. Link the 3V3 power connector at one end of the cable to the –48V port on the UPEUc, and
then tighten the screws on the connector to 0.25 N·m.
2. Link the other end of the cable to the power supply equipment onsite.
Step 9 Install the cables originally connected to the UEIU to the correct ports on the UPEUc based on
the recorded cable connections of the UEIU.
Step 10 Power on the UPEUc in slot 18 by referring to Powering on the BBU3900.
Step 11 Power off the UPEUa in slot 19 by referring to Powering Off the BBU3900.
Step 12 Disconnect the power cable, monitoring cable, and alarm cable from the UPEUa, as shown in
Figure 6-11.
Figure 6-11 Disconnecting a cable
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Step 13 Remove the two M3 screws on the panel, and then pull out the UPEU, as shown in Figure
6-12.
Figure 6-12 Removing the UPEU
12
Step 14 Install a UPEUc in slot 19 and tighten the screws on the panel to 0.6 N·m, as shown in Figure
6-13.
Figure 6-13 Installing a UPEUc
Step 15 Install a power cable for the UPEUc. For details about the operation, see related installation
guide.
1. Link the 3V3 power connector at one end of the cable to the –48V port on the UPEUc, and
then tighten the screws on the connector to 0.25 N·m.
2. Link the other end of the cable to the power supply equipment onsite.
Step 16 Install the ca bles originally connected to the UPEUa to the correct ports on the UPEUc based
on the recorded cable connections of the UPEUa.
Step 17 Power on the UPEUc in slot 19 by referring to Powering on the BBU3900.
Step 18 Check the status of the indicators to determine whether the new board works properly by referring
to UPEU.
Step 19 Perform the following operations on the Local Maintenance Terminal (LMT):
1. On the NodeB, run the ADD BRD command to configure the installed UPEUc.
2. On the eNodeB, run the ADD BRD command to configure the installed UPEUc.
3. On the BSC, run the ADD BTSBRD command to configure the installed UPEUc.
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4. On the NodeB, eNodeB, and BSC, Run the SET ALMPORT command to restore the alarm
configuration data.
Step 20 Take off the ESD wrist strap or ESD gloves, and pack up all the tools.
----End
Follow-up Procedure
Place the removed components into the ESD box or bag. Then, place the ESD box or bag into
a carton padded with foam or into the packing box of the new components.
6.1.4 Adding two UPEUc Boards to Replace Two UPEUa Boards
If two universal power and environment interface units (UPEUa boards) are installed in the
baseband unit (BBU), you can replace the UPEUa boards with two UPEUc boards.
Prerequisitel The tools and materials are ready, such as the electrostatic discharge (ESD) wrist strap or
ESD gloves and M3 screwdriver.
l Associated personnel have obtained keys and site access permission.
Context
The UPEUa boards to be removed are installed in slot 18 and slot 19, as shown in Figure
6-14.
Figure 6-14 Slot of the UPEUa boards
Procedure
Step 1 Check whether alarm cables are connected to the EXT_ALM ports on the UPEUa boards. If
alarm cables are not connected to the ports, go to step 2. If alarm cables are connected to the
ports, instruct the M2000 administrator to perform the following operation:
1. Run the LST ALMPORT command to record the alarm configuration data.
Step 2 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
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Step 3 Record all the cable connections on the panels of the two UPEUa boards.
Step 4 Power off the UPEUa in slot 18 by referring to Powering Off the BBU3900.
Step 5 Disconnect the cables connected to the UPEUa in slot 18, as shown in Figure 6-15.
Figure 6-15 Disconnecting a cable
Step 6 Remove the UPEUa in slot 18, as shown in Figure 6-16.
Figure 6-16 Removing the UPEUa in slot 18
Step 7 Install a UPEUc in slot 18 and tighten the screws on the panel to 0.6 N·m, as shown in Figure
6-17.
Figure 6-17 Installing a UPEUc
Step 8 Connect the cables to the correct ports on the UPEUc installed in slot 18 based on the recorded
cable connections.
Step 9 Power on the UPEUc in slot 18 by referring to Powering on the BBU3900.
Step 10 Power off the UPEUa in slot 19 by referring to Powering Off the BBU3900.
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Step 11 Disconnect the cables connected to the UPEUa in slot 19, as shown in Figure 6-15.
Step 12 Remove the UPEUa in slot 19, as shown in Figure 6-18.
Figure 6-18 Removing the UPEUa in slot 19
12
Step 13 Install a UPEUc in slot 19 and tighten the screws on the panel to 0.6 N·m, as shown in Figure6-19.
Figure 6-19 Installing a UPEUc in slot 19
Step 14 Connect the cables to the correct ports on the UPEUc installed in slot 19 based on the recorded
cable connections.
Step 15 Power on the UPEUc in slot 19 by referring to Powering on the BBU3900.
Step 16 Check the status of the indicators to determine whether the new board works properly by referring
to UPEU.
Step 17 Perform the f ollowing operations on the Local Maintenance Terminal (LMT):
1. On the NodeB, run the ADD BRD command to configure the installed UPEUc.
2. On the eNodeB, run the ADD BRD command to configure the installed UPEUc.
3. On the BSC, run the ADD BTSBRD command to configure the installed UPEUc.
4. On the NodeB, eNodeB, and BSC, Run the SET ALMPORT command to restore the alarm
configuration data.
Step 18 Take off the ESD wrist strap or ESD gloves, and pack up all the tools.
----End
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Follow-up Procedure
Place the removed components into the ESD box or bag. Then, place the ESD box or bag into
a carton padded with foam or into the packing box of the new components.
6.2 Adding a WBBP
This section describes how to install a WCDMA baseband processing unit (WBBP) when a
WBBP is required.
Prerequisite
l The tools and materials are ready, such as the electrostatic discharge (ESD) wrist strap or
ESD gloves and M3 screwdriver.
l Associated personnel have obtained keys and site access permission.
Context
If a WBBP is added, the power of the BBU may exceed the power supported by the universal
power and environment interface unit (UPEU). Therefore, a UPEUc is requir ed. For details about
how to install a UPEUc before installing the WBBP, see 6.1 Adding a UPEU. In some hot areas,
if another UPEU is installed in the BBU in an outdoor AC cabinet, the FAN unit in the BBU
must be replaced with a FANc unit that operates at a high speed. For details about how to replace
a FAN unit, see 5.6 Replacing the FAN Unit.
NOTE
A hot area refers to an area where the daily maximum temperature is higher than 45°C for more than 10
days in a year.
Procedure
Step 1 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 2Install the WBBP in the correct slot, as shown in Figure 6-20.
NOTE
For details about the configuration principle of the WBBP, see .
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Figure 6-20 Installing the WBBP
Step 3 If a common public radio interface (CPRI) cable must be connected to the WBBP, install the
CPRI cable by referring to the related installation guide.
Step 4 Perform the following operation on the Local Maintenance Terminal (LMT):
1. Run the ADD BRD command to configure the installed WBBP.
Step 5 Take off the ESD wrist strap or ESD gloves, and pack up all the tools.
----End
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7 Replacing SLPU Components
About This Chapter
During the SLPU maintenance, the SLPU components, such as the SLPU case, UELP, and
UFLP, can be replaced as required
7.1 Replacing the SLPU
The Signal Lightning Protection Unit (SLPU) provides surge protection for a base station.
7.2 Replacing the UELP
Each Universal E1/T1 Lightning Protection unit (UELP) provides protection for four E1s/T1s.
7.3 Replacing the UFLPThe universal FE lightning protection unit (UFLP) provides surge protection for base stations.
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7.1 Replacing the SLPUThe Signal Lightning Protection Unit (SLPU) provides surge protection for a base station.
Prerequisite
l Tools and materials, such as an ESD wrist strap or ESD gloves and screwdrivers, are ready.
l The type of board to be replaced and its quantity are confirmed, and the new case is ready.
l Associated personnel have been permitted to access the site and obtained required keys.
Context
l Figure 7-1 shows the position of the SLPU in a cabinet.
Figure 7-1 Position of the SLPU
Procedure
Step 1 Wear an ESD wrist strap or ESD gloves.
WARNING
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 2 Record all the cable connections on the panel of the module to the replaced.
Step 3 Remove the transmission cables of the boards in the SLPU case.
Step 4 Remove the four M6 screws on the panel, and then pull out the SLPU case, as shown in Figure
7-2.
Figure 7-2 Removing the SLPU
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Step 5 Remove all the boards in the faulty SLPU case, install them in the corresponding slots of the
new BBU case, and then install filler panels in the idle slots.
Step 6 Install the new case, tighten the screws on the case until the tightening torque reaches 2 N·m,and then reconnect the cables.
Step 7 Perform the following operations on the local maintenance terminal (LMT):
1. On the UMTS side, check whether any alarm is reported on the NodeB LMT. For details,
see Browsing Alarms. If an alarm is reported, clear the alarm by referring to Querying
Alarm Handling Suggestions.
Step 8 Perform following operations on the M2000:
1. Synchronize the inventory information manually. For details, see Synchronizing Inventory
Data.
Step 9 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedure
l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the packing box of the new component.
l Fill in the fault f orm to record detailed information of the replaced components.
l Contact the local Huawei office to handle the faulty component.
7.2 Replacing the UELPEach Universal E1/T1 Lightning Protection unit (UELP) provides protection for four E1s/T1s.
Prerequisite
l After confirming the type of a faulty board, do as follows:
– If the board can be queried online, run the associated command on the LMT to 5.1
Query Electronic Label of the Board.
– If the board is faulty and cannot be queried online, query the board information offline
on the M2000. For details, see Querying Inventory Data.
l The tools and materials are ready, such as the ESD wrist strap or ESD gloves and M3
screwdriver.
l Associated personnel have been permitted to access the site and obtained required keys.
Context
l Figure 7-3 shows the position of the UELP in the SLPU.
Figure 7-3 Position of the UELP
SLPU
UELP
S0INSIDE OUTSIDE
S1
S2
S3
UELP
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l The board is hot-swappable.
Procedure
Step 1 Wear an ESD wrist strap or ESD gloves.
CAUTION
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 2 Record all the cable connections on the panel of the module to the replaced.
Step 3 Disconnect the transmission cables from the UELP, as shown in Figure 7-4.
Figure 7-4 Disconnecting the cable
Step 4 Remove the two M3 screws on the panel, and then pull out the UELP, as shown in Figure 7-5.
Figure 7-5 Removing the UELP
1
21
Step 5 Set the DIP switches on the new board according to the settings of the DIP switches on the faulty
board. If required, query the information about the DIP switch by referring to UELP.
Step 6 Install the new board, tighten the screws on the board until the tightening torque reaches 0.6
N·m, and then reconnect the cables.
Step 7 Perform the following operations on the local maintenance terminal (LMT):
1. On the UMTS side, check whether any alarm is reported on the NodeB LMT. For details,
see Browsing Alarms. If an alarm is reported, clear the alarm by referring to QueryingAlarm Handling Suggestions.
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Step 8 Perform following operations on the M2000:
1. Synchronize the inventory information manually. For details, see Synchronizing Inventory
Data.
Step 9 Take off the ESD wrist strap or gloves, and then pack up all the tools.
----End
Follow-up Procedure
l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag
into a carton padded with foam or into the packing box of the new component.
l Fill in the fault form to record detailed information of the replaced components.
l Contact the local Huawei office to handle the faulty component.
7.3 Replacing the UFLP
The universal FE lightning protection unit (UFLP) provides surge protection for base stations.
Prerequisite
l After confirming the type of a faulty board, do as follows:
– If the board can be queried online, run the associated command on the LMT to 5.1
Query Electronic Label of the Board.
– If the board is faulty and cannot be queried online, query the board information offline
on the M2000. For details, see Querying Inventory Data.l Tools and materials, such as an ESD wrist or ESD gloves and M3 screwdrivers, are ready.
l Associated personnel have been permitted to access the site and obtained required keys.
Context
l Figure 7-6 shows the position of the UFLP in the SLPU.
Figure 7-6 Position of the UFLP
SLPUS0
S1
S2
S3
FE0
INSIDE OUTSIDE
FE1 FE0 FE1UFLP
UFLP
l The board is hot-swappable.
Procedure
Step 1 Wear an ESD wrist strap or ESD gloves.
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CAUTION
Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 2 Record all the cable connections on the panel of the module to the replaced.
Step 3 Disconnect transmission cables from the UFLP, as shown in Figure 7-7.
Figure 7-7 Disconnecting cables
Step 4 Remove the two M3 screws on the panel, and pull out the UFLP, as shown in Figure 7-8.
Figure 7-8 Removing the UFLP
1
21
Step 5 Install the new board, tighten the screws on the board to 0.6 N·m, and reconnect the cables.
Step 6 Perform the following operations on the local maintenance terminal (LMT):
1. On the UMTS side, check whether any alarm is reported on the NodeB LMT. For details,
see Browsing Alarms. If an alarm is reported, clear the alarm by referring to Querying
Alarm Handling Suggestions.
Step 7 Perform following operations on the M2000:
1. Synchronize the inventory information manually. For details, see Synchronizing Inventory
Data.
Step 8 Take off the ESD wrist strap or ESD gloves, and pack up all the tools.
----End
Follow-up Procedure
l
Place the replaced component into the ESD box or bag. Then, place the ESD box or baginto a foam-padded carton or the packing box of the new component.
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l Fill in the fault form with detailed information about the replaced component.
l Contact the local Huawei office to handle the faulty component.
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