rbs 6201 02_03813

WCDMA RBS 6201 Field Maintenance

WCDMA RBS 6201 Maintenance

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© Ericsson AB 2011 | WCDMA RBS 6201 Maintenance | LZU1087647 R4A | Figure 02-2

Chapter Objectives

Upon completion of this module the student will be able to:1. Explain RBS 6201 Main features2. Explain the RBS 6201 Hardware architecture3. Identify the RBS 6201 Connection interfaces4. Explain DUW Hardware architecture5. Identify the DUW connection Interfaces6. Explain the Battery Backup Systems BBS 62017. Understand the RBS 6201 Maintenance procedures8. Explain RBS 6201 Handling faulty equipment


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RBS 6201 Site


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RBS 6000 Family

RBS 6101

RBS 6102RBS 6601

RRURBS 6301

RBS 6201

RBS 6202

AIR(AntennaIntegrated

Radio)

RBS 6302


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RBS 6201


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Hardware Architecture-48 V DC

Pos Name of Unit No. of Units

Description

A Fan 3 - 4 Cools the RBS

B Power Connection Filter (PCF)

1 Connects external input -48 V DC power for supply to the RBS cabinet.

C Support Hub Unit (SHU) 0 - 1 Connects peripheral units such as PDUs and the SCU to the DU.

D Support Control Unit (SCU) 1 Controls the fans and supports the external EC-bus including power to the SAU.

Can act as a limited HUB in a -48 V DC two-wire RBS, that is, no SHU is necessary.

E Power Distribution Unit (PDU)

1 - 2 Distributes fused +48 V DC power to the units in the RBS.

F Radio Unit (RU) 1 - 12 Receives digital data and converts it to analog signals. Also receives radio signals and converts these to digital signals.

G Digital Unit (DU) 1 - 4 Provides switching, traffic management, timing, baseband processing and radio interface

H Power Filter Unit (PFU) 0 - 2 Stabilizes the -48 V DC system voltage in the RBS.

I Cabinet busbar 1 Distributes power from the PCF to the PDUs and the PFUs

J Space for optional transmission equipment

-


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Hardware Architecture+24 V DC and AC


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Radio Unit WCDMA, RUWBlock Diagram


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Digital Unit WCDMA Interfaces

Marking Connector Description Optical

RI A - RI F 6 x SFP Radio Interface x 6 Internal interface between DU and RU External interface between DU and RRU

Yes

TN A RJ45 Transmission, Ethernet External interface, electrical Yes

IDL HSIO Inter DU Link Internal interface, DU to DU No

TN B SFP Transmission, Ethernet External interface, optical Yes

LMT B RJ45 Site LAN External interface Yes

LMT A RJ45 Console Internal interface No

EC A RJ45 EC Bus Internal interface No

GPS Modular 10P GPS External interface No

PWR Power -48 V DC Power No


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How to list duws


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Block Diagram Digital Unit WCDMA, DUW

DUW


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Power Connection Filter (PCF)PCF 02 04


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Power Connection Unit (PCU)PCU AC 03


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Power Connection Unit (PCU)PCU DC 03

PCU DC 03


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Power Distribution Unit (PDU)PDU 02 01


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Power Filter Unit (PFU)PFU 02 01


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Power Supply Unit (PSU) PSU AC 01 & PSU 24 01

PSU AC 01

PSU 24 01


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Battery Fuse Unit (BFU)BFU 01 01


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Support Alarm Unit (SAU)


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Support Control Unit (SCU)SCU 02 01


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Support Hub Unit (SHU)SHU 02 01


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Transport Connectivity Unit, TCU-02

SFP

Optical

E1,T1, J1RJ-45

Ethernet Console

GPS/Sync

PWR

Fault

OperationMaintenanceStatus


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Connection Interfaces

Position Decsription

A Electrostatic Discharge (ESD) wrist strap interface

B Earthing grounding interface

C Support Alarm Unit (SAU) interface

D Power connection interface

E Antenna interface

F Global Positioning System (GPS) interface

G Site Local Area Network (LAN) interface

H Transmission interface

I ESB interface


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Electrostatic Discharge, ESD Wrist Strap


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Earth Grounding Interface


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SAU Interface


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Power Interface -48 V Two-Wire DC Interface


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Power Interface + 24 V Three-Wire DC Interface


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Power Interface AC Interface


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Battery Backup InterfaceExternal BFU Interface


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Battery Backup InterfaceInternal BFU Interface


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Antenna Interface

NOTE:

Upper Subrack – 3, 5, 7, 9, 11, 13

Lower subrack – 2, 4, 6, 8, 10, 12


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GPS Interface (Optional)


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Site LAN Interface


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Transmission InterfaceEthernet Electrical Connection for WCDMA


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Transmission InterfaceEthernet, Optical (Optional)


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Transmission InterfaceE1, T1 and J1


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Transmission InterfaceSTM-1


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BBU 6201


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BBS 6201


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PBC 6200

RBS 6201 PBC 6200


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RBS 6201 Operation & Maintenance


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Maintenance Procedures

› Diagnostics and Fault Handling– Fault List

› RBS Field Repair

› Test after Repair

› Concluding Routines


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Diagnostics and Fault Handling


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RBS 6000 Fault List


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Optical IndicatorsSymbol Marked Optical Indicators (1/2)Marking Indicator

NameColor Mode Description

Fault Red Off(1) No faults detected in unit

On Hardware fault detected in unit

Status Yellow Off(1) No external or internal faults detected in Node

On One or more faults detected in remote unit

Blink 0.5 Hz One or more faults detected in remote unit

Power Distribution Fault

Yellow Off(1) No E-Fuse tripped

Blink 0.5 Hz One or more E-fuses tripped

Check the green optical indicators next to each E-Fuse to determine which E-Fuse has tripped

Fan Group Fault Yellow Off(1) No faults detected in Fan Group <n> / Fan <n>

On One or more faults detected in Fan Group <n> / Fan <n>

Blink 0.5 Hz(2) Fan Group <n> has detected fan

Maintenance Blue Off(1) No maintenance

Traffic in ongoing

On Maintenance mode

All traffic and alarms are suppressed

Blink 0.5 Hz(3) Maintenance Button not pressed – (1)Maintenance mode is initiated (2)When traffic and alarms have been removed the indicator will switch to On

Maintenance button pressed – (1)If the maintenance button is released during blink, maintenance mode is initiated. Traffic and alarms removed (2) If the maintenance button is kept pressed the unit will be reset.

Blink 16 Hz(3) Maintenance button pressed – (1)If the maintenance button is released during blink the system will remain in initial mode no maintenance (2)If the maintenance button is kept pressed the system will continue to next step towards the maintenance mode.


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Optical IndicatorsSymbol Marked Optical Indicators (2/2)Marking Indicator

NameColor Mode Description

Operational Green Off No power

On(1) Operational

Blink 0.5 Hz Dependent resource missing, unit in autonomous mode(4)

Blink 2 Hz Load or testing in progress

Double Flash Off(5) Load in progress

The system is performing a function change (and saving software in internal flash memory)

The unit is not carrying traffic

Double Flash On(5) Load in progress

The system is performing a function change (and saving software in internal flash memory)

Traffic is ongoing

Blink 16 Hz Indicates one of the following – (1)Initial boot test (2)Transitory activity(6) (7)

1800 Operational Green Off PSU(8) not operational in 1,800 W

On(9) PSU operational in 1,800 W

Blink 0.5 Hz Dependent resource missing, PSU in autonomous mode

1200 Operational Green Off PSU not operational in 1,200 W

On(10) PSU operational in 1,200 W

Blink 0.5 Hz Dependent resource missing, PSU in autonomous mode

E-Fuse Green Off No power distributed

On(11) Power distributed

Blink 0.5 Hz E-Fuse tripped due to an overload or short circuit

<n> or <x>

Interface Green Off Disconnected (Link is Down)

On(11) Connected (Link is Up)


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Optical IndicatorsText Marked Optical Indicators (1/2)

Marking Indicator name Color Mode Description

C Combined Green Off(1) RU(2) not in Combined mode

On(3) RU in Combined mode

Blink 0.5 Hz Incorrect hardware setting

The RU cannot be set to same state for both Combined and Uncombined

CB <n> E-Fuse Green Same as

Data <n> Information Yellow Off SFP(4) not installed or not detected

On Error (SFP present but malfunctioning)

Blink 0.5 Hz SFP mounted correctly but optical cable receive signal not detected

Blink 2 Hz Optical cable receive signal status okay

Blink 16 Hz(5) Optical cable link negotiation complete

EC Interface Green Off Electrically Disconnected from Hub

On(6) Electrically Connected from Hub

ET <x> Interface Green Off Disconnected (Link is Down)

OnInterfaceCableConnectedNormalOperation

Connected (Link is Up)

F

Fault

Fault Redd Same as


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Optical IndicatorsText Marked Optical Indicators (2/2)

Marking Indicator name Color Mode Description

Fan Group <n>

Fan <n>

Fault

Fan Group Fault Yellow Same as

I(7) Information Yellow Off(5) Unlocked

On Locked

Blink 0.5 Hz Shutdown in progress

Blink 16 Hz Busy

LMT <x> Interface Green Off Disconnected (Link is Down)

OnInterfaceCableConnectedNormalOperation Connected (Link is Up)

M Maintenance Blue Same as

O

Oper

Operational

Operational Green Same as

RI <x> Interface Green Off Disconnected (Link is Down)


TN <x> Interface Green Off Disconnected (Link is Down)


Uc Uncombined Green Off(8) RU not in Uncombined mode

On(9) RU in Uncombined mode

Blink 0.5 Hz Incorrect hardware setting

The RU cannot be set to same state for both Combined and Uncombined


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Blinking PatternsBlink 0.5 Hz & Blink 16 Hz

Blink 0.5 Hz – Slow blinking behavior

Blink 16 Hz – Fast blinking behavior


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Blinking PatternsDouble Flash

Optical Indicator Blink Pattern at Double Flash On

Optical Indicator Blink Pattern at Double Flash Off


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Hardware Maintenance


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Concluding Routines - Blue TagRepair Delivery Note for Registration


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Concluding Routines - Blue TagRepair Delivery Note to be Attached to Faulty Unit


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Packing of Faulty Unit

ESD Bag

Shock Absorbent Padding

Box


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Preventive Maintenance


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Preventive MaintenanceDetermining Preventive Maintenance Intervals

Activity Frequency

Tightening the bolts securing the cabinet to the base frame

Half a year after installation in earthquake zones and after an earthquake

Tightening the RF jumper connections Half a year after:• RBS Installation• RU expansion• RU replacement

Tightening the earth grounding connections

Half a year after installation

Replacing the fans Every 10 years

Maintaining the door filter Inspect at every site visit or at least once a year.

Replace every 2 years

Note: These are just recommendations


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Summary

Upon completion of this module the student should be able to:1. Explain RBS 6201 Main features2. Explain the RBS 6201 Hardware architecture3. Identify the RBS 6201 Connection interfaces4. Explain DUW Hardware architecture5. Identify the DUW connection Interfaces6. Explain the Battery Backup Systems BBS 62017. Understand the RBS 6201 Maintenance procedures8. Explain RBS 6201 Handling faulty equipment

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rbs 6201 02_03813

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