Ericsson RBS 6302 Operating Instructions Manual

Replacing Main Unit

RBS 6302

OPERATING INSTRUCTIONS

81/1543-LZA 701 6001 Uen B

Copyright

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

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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Introduction

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

• 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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Ge2569A

Figure 1 RBS 6302 Main Unit Installation Alternatives

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Introduction

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.

3

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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

• Allen key bit, 6 mm

• Torx bit, T20

• FD bit, 5.5 mm

• Socket, 13 mm

LTT 601 138/1

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,

250 mm

LSS 103 29/1

Personal tools light

(LTT 601 156/1)

Electrostatic Discharge

(ESD) wrist strap

LTT 601 136/1

Ferrule end-face

cleaner

LTT 601 154/1

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.

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Introduction

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.

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Replacing the Main Unit

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

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

Do!

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.

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.

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Ge2274A

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

Torx screwdriver.

Ge2666A

T20 Torx

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

installation cover open.

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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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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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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

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.

Ge2672A

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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Ge2670A

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

EC E

SAU

12 34

5

678

!

16. Disconnect the external alarm by removing two socket connectors from

the main unit, if applicable.

Ge2671A

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

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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.

Ge2174A

Socket 13 mm

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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Ge2675A

21. Close the installation cover, and tighten the four captive screws to a torque

of 1.7 Nm using a T20 Torx screwdriver.

Ge2155A

1.7 Nm

T20 Torx

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

position.

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Ericsson RBS 6302 Operating Instructions Manual

Ericsson RBS 6302 Operating Instructions Manual

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