Ericsson RBS 6302 Operating Instructions Manual

Replacing Main Unit

RBS 6302

OPERATING INSTRUCTIONS

81/1543-LZA 701 6001 Uen B

Copyright

© Ericsson AB 2012. All rights reserved. No part of this document may be
reproduced in any form without the written permission of the copyright owner.

Disclaimer

The contents of this document are subject to revision without notice due to
continued progress in methodology, design and manufacturing. Ericsson shall
have no liability for any error or damage of any kind resulting from the use
of this document.

Trademark List

All trademarks mentioned herein are the property of their respective owners.
These are shown in the document Trademark Information.

81/1543-LZA 701 6001 Uen B | 2012-11-09

Contents

Contents

1 Introduction 1

1.1 Prerequisites 3

1.2 Warranty Seal 5

2 Replacing the Main Unit 7

2.1 Removing the Main Unit 7

2.2 Installing the Main Unit 34

3 Replacing the GPS Receiver Unit 35

3.1 Removing the GPS Receiver Unit 35

3.2 Installing the GPS Receiver Unit 39

4 Performing Concluding Routines 41

Reference List 43

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1 Introduction

This instruction describes how to remove the RBS 6302 main unit and optional
Global Positioning System (GPS) receiver unit, in preparation for installing
replacement units. The main unit removal and subsequent replacement
procedures are ordinarily performed during off-peak hours to minimize traffic
disturbance.

The main unit installation alternatives are presented in Figure 1, and are the
following:

• Single unit on a pole

• Single unit on a wall

Introduction

• Dual unit back-to-back on a pole

• Dual unit back-to-back on a wall

• Triple unit on a pole

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Replacing Main Unit

Ge2569A

Figure 1 RBS 6302 Main Unit Installation Alternatives

2

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1.1 Prerequisites

This section contains information on the documents, tools, and conditions that
apply to the procedures.

Note: Information on compatibility issues can be found in Compatibilities for

Hardware and Software.

1.1.1 Documents

Ensure that the following documents are read and understood:

• Personal Health and Safety Information

• System Safety Information

See Reference List on page 43 for required documents.

Introduction

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Replacing Main Unit

1.1.2 Tools

The tools required for replacing the main unit are listed in Table 1.

Table 1 Required Tools

Product Name Product Number Included in

Box socket set with

LTT 601 138/1

• Allen key bit, 6 mm

• Torx bit, T20

• FD bit, 5.5 mm

• Socket, 13 mm

Socket, 16 mm LSB 107 13/1

Torx screwdriver, T10 LSA 901 43/1

Torx screwdriver, T20 LSA 901 43/3

Torx screwdriver, T25 LSA 901 43/4

Tool for cable ties LSD 901 46/1

Extension bar 3/8 inch,

LSS 103 29/1

250 mm

Electrostatic Discharge

LTT 601 136/1

(ESD) wrist strap

Ferrule end-face

LTT 601 154/1

cleaner

Personal tools light
(LTT 601 156/1)

1.1.3 Conditions

Before starting this procedure, ensure that the following conditions are met:

• A work order is available.

• Applicable new units are available.

• If applicable, a client configured to run the RBS Element Manager
(RBS EM) with the relevant Java plug-in version installed, is available.

• If applicable, a new Configuration Version (CV) is loaded.

• All relevant documentation is available.

• All keys are available (including padlock keys for the optional solar shield
padlock), and site access is granted.

4

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Note: The following precautions must be taken when working at height:

• Wear a safety belt and helmet.

• Wear adequate protective clothing in cold weather.

• Use only tested and approved lifting devices.

1.2 Warranty Seal

The unit is equipped with a warranty seal sticker.

Note: Seals that have been implemented by Ericsson shall not be broken or

removed, as it will otherwise void warranty.

Introduction

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Replacing Main Unit

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2 Replacing the Main Unit

This section contains instructions for how to replace a main unit.

Information about compatibilities of hardware and software can be found in
Compatibilities for Hardware and Software.

For WCDMA, it is possible to expand the main unit with a second unit in a dual
unit configuration, where two connected units constitute one RBS. For more
information, see Expanding Configurations.

Note: In a dual unit configuration, only the faulty unit is replaced.

2.1 Removing the Main Unit

Replacing the Main Unit

The procedures for removing a main unit apply to wall or pole installation.
Removing a faulty main unit implies reinstalling a replacement unit. All
replacement parts are in place in preparation for either wall or pole reinstallation.

Warning!

Risk for falling objects, work at height in progress. Falling objects can cause
serious injury or even be fatal. Always wear a helmet and avoid standing in
the danger area.

Warning!

High energy levels are present in this unit. Improper handling of the unit can
lead to short circuiting that can result in serious injury. Exercise care when
working with this unit.

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Replacing Main Unit

Always use an approved ESD wrist strap when working with sensitive
equipment. Damage to components mounted on printed board assemblies can
occur if an ESD wrist strap is not used.

2.1.1 Preparing Removal

To prepare the main unit for removal, perform the following procedure:

1. Inform the Operation and Maintenance Center (OMC) that work is to start
at the node site. The OMC can then take the affected sectors out of service
to minimize traffic disturbance.

Do!

2. If you are ready to install new equipment, check to see that the items
delivered correspond to the packing list. Unpack the replacement unit,
and check to see that it is not damaged. If it is damaged, immediately
report to the transport company. Take a photo of the damage to expedite
the claims process.

Note: Always rest the main unit standing upright on a flat surface or

laying down on its back.

3. Ensure that the old unit has the administrative state locked, if possible.

4. Switch off the main unit's external power (there is no internal power switch
on the main unit).

5. Disconnect the power cable from the main unit or the PSU AC.

Ge2125A

Ge2160A

6. Release the front solar shield by pressing outwards on both rails and slide
the solar shield upwards until it snaps in the upper position.

Note: If the front solar shield is equipped with the padlock option, you

must first unlock it. Put the locks and keys in a pocket or otherwise
secure them if working at height.

8

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Replacing the Main Unit

Ge2274A

7. Loosen the four captive screws holding the installation cover using a T20
Torx screwdriver.

T20 Torx

8. Open the installation cover until it snaps into position, holding the
installation cover open.

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Ge2666A

9

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Ge2150A

9. Connect the ESD wrist strap to the grounding point on the main unit, as
shown.

Always use the ESD wrist strap when handling cables inside the installation
cover on the main unit.

Ge2363A

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Replacing the Main Unit

Note: Be careful not to drop any equipment, tools, or screws if you are

working at height. Tools should be secured to belts or harnesses
if working at height.

10. Open the cable gland holding the optical cables.

Note: Ensure that all cables are labeled before disconnecting them.

Ge2667A

11. Remove the optical cables by unplugging them from the Small form Factor
Pluggable (SFP) modules.

Note: Never touch the end face of the optical connectors. Protect from

dirt or grease that can damage fiber optic cables. Too much or
careless bending may damage the cable. The minimum allowed
bending radius can be found in

Installing Optical Cables for

Main-Remote Solutions.

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Replacing Main Unit

IDL TN B A C

B

DE

F

Ge2668A

12. Cover the optical cables with a plastic bag and clamp or strap the cables
to the pole, or wall.

Note: Do not clamp the cable too tight. Proper handling of optical cables

in main remote systems, can be found in Installing Optical Cables

for Main-Remote Solutions

12

Ge2732A

13. Open the cable gland holding the electrical cables.

Note: Ensure that all cables are labeled before disconnecting them.

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Ge2669A

14. Loosen the three captive screws holding the shield terminal in place using
a T10 Torx screwdriver.

T10 Torx

15. Disconnect the electrical transmission cables from the main unit, port TN A,
ET A, and ET B, if applicable.

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Ge2672A

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GPS EC AUX LMT A LMT B TN A ET A ET B

!

1234

5

678

EC E

SAU

Ge2670A

16. Disconnect the external alarm by removing two socket connectors from
the main unit, if applicable.

17. Unscrew and disconnect the GPS RF cable, if applicable

Ge2671A

14

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Replacing the Main Unit

Ge2673A

18. Disconnect the ESD wrist strap from the grounding point on the main unit.

19. Disconnect the ground cable from the main unit using a wrench fitted with a
13 mm socket.

Socket 13 mm

Ge2174A

20. Secure all the cables and the shield terminal. Clamp or strap the cables to
the pole or wall.

Cover the cables connections and the shield terminal with a plastic bag, if
necessary.

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Replacing Main Unit

Ge2675A

21. Close the installation cover, and tighten the four captive screws to a torque
of 1.7 Nm using a T20 Torx screwdriver.

T20 Torx

1.7 Nm

16

Ge2155A

22. Close the front solar shield by sliding it down until it snaps into closed
position.

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Ge2276A

23. Attach a lifting device to the top of the pole or wall, where the main unit
is to be attached to.

Ge2097A

24. Pull a rope through the block on the lifting device, and attach the end of the
rope to the handle of the main unit. This rope is for lowering the main unit.

Attach another rope to one of the stands on the main unit. This rope is for
guiding the main unit to prevent it from hitting the pole, wall, or other units.

Select one of the following scenarios and perform the continuing procedure in
the section indicated:

• For removing the main unit from a single unit pole installation kit, see
Section 2.1.2 on page 18.

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• For removing the main unit from a single unit wall installation kit, see
Section 2.1.3 on page 20.

• For removing the main unit from a dual unit back-to-back pole installation
kit, see Section 2.1.4 on page 23.

• For removing the main unit from a dual unit back-to-back wall installation
kit, see Section 2.1.5 on page 27.

• For removing the main unit from a triple unit pole installation kit, see
Section 2.1.6 on page 31.

2.1.2 Removal from a Single Unit Pole Installation kit

To remove the main unit, preform the following procedure:

1. Loosen the two M10 bolts on the top side of the upper pole clamp, and
the two M10 bolts on the bottom of the lower pole clamp using a wrench
fitted with a 16 mm socket.

16 mm

Ge2676A

18

2. Unhook the main unit from the upper pole clamp. Move the upper part of
the main unit 10 mm to the left so that the bolts on the upper pole clamp
are released through the wide part of the holes on the upper bracket of
the main unit.

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Replacing the Main Unit

3. Lower the main unit as shown.

Ge2683A

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Replacing Main Unit

4. Continue the procedure in Section 2.1.7 on page 34.

2.1.3 Removal from a Single Unit Wall Installation kit

To remove the main unit, preform the following procedure:

1. Loosen the two M10 bolts on the top side of the upper bracket, and the two
M10 bolts on the bottom of the lower bracket using a wrench fitted with a
16 mm socket.

Ge2677A

20

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16 mm

Replacing the Main Unit

Ge2684A

2. Unhook the main unit from the wall brackets. Move the lower part of the
main unit away from the wall. Move the upper part of the main unit 10 mm
to the left so that the bolts on the upper wall bracket are released through
the wide part of the holes on the upper bracket of the main unit.

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3. Lower the main unit as shown.

Ge2678A

Ge2679A

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Replacing the Main Unit

4. Continue the procedure in Section 2.1.7 on page 34.

2.1.4 Removal from a Dual Unit Back-to-Back Pole Installation kit

To remove the main unit, preform the following procedure:

1. Loosen the five captive screws holding the back-to-back plates using a
T25 Torx screwdriver.

T25

Ge2687A

2. Loosen the inner eight M10 bolts using a wrench fitted with a 16 mm socket.

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Replacing Main Unit

16 mm

3. Carefully loosen the outer eight M10 bolts until the back-to-back plates
can be opened.

16 mm

Ge2691A

24

Ge2692A

4. Loosen the four M10 bolts on the inner side of the plate using a wrench
fitted with a 16 mm socket.

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16 mm

Replacing the Main Unit

5. Unhook the main unit from the back-to-back plate.

Ge2693A

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6. Lower the main unit as shown.

Ge2694A

26

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Replacing the Main Unit

7. Continue the procedure in Section 2.1.7 on page 34.

2.1.5 Removal from a Dual Unit Back-to-Back Wall Installation kit

To remove the main unit, preform the following procedure:

1. Loosen the five captive screws holding the back-to-back plates using a
T25 Torx screwdriver.

Ge2680A

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Replacing Main Unit

T25

Ge2685A

2. Loosen the inner eight M10 bolts using a wrench fitted with a 16 mm socket.

16 mm

Ge2688A

28

3. Carefully loosen the outer eight M10 bolts until the back-to-back plates
can be opened.

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16 mm

Replacing the Main Unit

4. Loosen the four M10 bolts on the inner side of the plate using a wrench
fitted with a 16 mm socket.

16 mm

Ge2689A

5. Unhook the main unit from the back-to-back plate.

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Ge2695A

29

Replacing Main Unit

6. Lower the main unit as shown.

Ge2690A

30

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Replacing the Main Unit

7. Continue the procedure in Section 2.1.7 on page 34.

2.1.6 Removal from a Triple Unit Pole Installation kit

To remove the main unit, preform the following procedure:

1. Loosen the two M10 bolts on the top side of the upper pole clamp, and
the two M10 bolts on the bottom of the lower pole clamp using a wrench
fitted with a 16 mm socket.

Ge2680A

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Replacing Main Unit

2. Unhook the main unit from the pole clamps. Move the lower part of the
main unit away from the pole, while moving the upper part of the main unit
10 mm to the left so that the bolts on the upper pole clamp are released
through the wide part of the holes on the upper bracket of the main unit.

Ge2569A

32

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Replacing the Main Unit

3. Lower the main unit as shown.

Ge2719A

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4. Continue the procedure in Section 2.1.7 on page 34.

2.1.7 Concluding procedure

1. Remove all SFP modules from the optical connectors.

2. Unscrew and remove the mounting brackets, and bolts from the main unit
using a wrench fitted with a 16 mm socket.

3. If applicable, remove the GPS receiver unit, as described in Section 3 on
page 35.

4. If applicable, remove the Power Supply Unit (PSU) AC, as described in
Replacing Power Units.

2.2 Installing the Main Unit

The main unit installation procedures can be found in Installing RBS.

Ge2679A

34

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Replacing the GPS Receiver Unit

3 Replacing the GPS Receiver Unit

This section contains procedures on how to replace the GPS receiver unit
in the main unit.

For more information on the GPS receiver system, refer to GPS Receiver
System for RBS 6000 User Guide.

3.1 Removing the GPS Receiver Unit

To remove the GPS receiver unit, perform the following procedure:

1. Perform Step 6 to Step 12 as described in Section 2.1 on page 7, if
applicable.

2. If there are cables connected to the shield terminal, loosen the three captive
screws holding the shield terminal in place using a T10 Torx screwdriver.

T10 Torx

3. Loosen the five captive screws holding the GPS cover in place using a T10
Torx screwdriver. Remove the GPS cover.

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Ge2715A

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T10 Torx

Ge2722A

4. Remove the GPS receiver unit. There are two different ways to remove the
GPS receiver unit depending on the R-state of the RBS. For R-state R1,
see second illustration below. For R-state R2 and higher: Pull the GPS
receiver unit straight up as shown in the following illustration.

Note: Be careful not to break the coax cable connector.

36

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Replacing the GPS Receiver Unit

Ge3337A

For RBS in R-state R1: Pull the right-hand side of the GPS receiver unit
straight up, and then unhook the left-hand side as shown in the following
illustration.

Note: Be careful not to break the coax cable connector.

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1

2

5. Disconnect the internal RJ-45 cable from the GPS receiver unit.

Port 1

Ge2723A

38

Ge2717B

6. Unscrew the internal coax cable from the ANT port on the GPS receiver
unit, and disconnect the cable.

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Replacing the GPS Receiver Unit

3.2 Installing the GPS Receiver Unit

The installation procedures for the GPS receiver unit is described in Installing
RBS.

Ge2718B

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Performing Concluding Routines

4 Performing Concluding Routines

Proceed with the instructions in the work order or in the OPerational Instructions
(OPI) that refers to this OPI.

The RBS main unit replacement procedures have been performed as described
in the Installing RBS and other relevant documentation for cabling, spare parts,
and so on, have been followed and required work performed.

Before leaving the site, perform the following procedure:

1. Ensure that the RBS is operational and that no alarms are active.
(Information about optical indicators, can be found in Indicators, Buttons,
and Switches and RBS Description.)

Note: Reaching final optical indicator status can take up to 30 minutes.

2. Save the configuration backup, if applicable.

3. Exit the software application and disconnect the terminal, if applicable.

4. Disconnect the ESD wrist strap, if applicable.

5. Collect all tools.

6. Inform the OMC that work is finished at the node site.

7. Close and lock the main unit, if applicable.

8. Complete the work order.

9. Follow the procedures for the return and disposal of replacement parts and
the disposal of packing. Information about how to handle faulty equipment
can be found in Handling Faulty Equipment.

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Reference List

Reference List

Safety

[1] Personal Health and Safety Information, 124 46-2885

[2] System Safety Information, 124 46-2886

Generic

[3] Handling Faulty Equipment, 2/1541-LZA 701 6001

[4] Indicators, Buttons, and Switches, 19/1551-LZA 701 6001

[5] Replacing Power Units, 83/1543-LZA 701 6001

[6] Installing RBS, 17/1531-LZA 701 6001

[7] RBS Description, 113/1551-LZA 701 6001

WCDMA

[8] Compatibilities for Hardware and Software, 11/1551-LZA 701 6003

[9] Element Manager, 2/1553-LZA 701 6003

[10] Expanding Configurations, 52/1543-LZA 701 6008

Site

[11] Installing Optical Cables for Main-Remote Solutions, 15/1531-LZA 701

0003

[12] GPS Receiver System for RBS 6000 User Guide, 6/1553-LZA 701 6009

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43