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Evolium UTRAN
Evolium A9112 Micro Node B
Maintenance Handbook
Node B Document
Procedural Guide
Release R5 from MR1
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Status RELEASED
Short title Maintenance Handbook
All rights reserved. Passing on and copying of this document, useand communication of its contents not permitted without writtenauthorization from Evolium.
BLANK PAGE BREAK
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Contents
Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1 Replace Micro Node B RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1 Replacement Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.2 Replace Micro Node B Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.3 Replace Fuses and E1 Lightning Protection in COBO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161.4 Replace ACCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191.5 Replace MCON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231.6 Replace Fan Cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271.7 Replace Top of Cover with Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291.8 Replace Site Support Cabinet RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2 Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.1 Recommended Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442.2 Adjust Local MSUMU Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442.3 Recommended Replacements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472.4 Battery Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
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Figures
Figures
Figure 1: Micro Node B Installed with Protective Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 2: Micro Node B Housing Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 3: COBO with MCON and ACCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 4: ACCO Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 5: MCON Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 6: Fan Casette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 7: Top of Cover with Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 8: SSC, Position of RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 9: SSC, Battery Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 10: SSC, Installation of Battery Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 11: SSCPS, LED Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 12: SSCFH, Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 13: SSCFH, Internal View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 14: SSCCF, Detailed View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 15: SSC, AC Connection Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
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Preface
Preface
Purpose This handbook describes the Evolium A9112 Micro Node B and Side SupportCabinet (SSC) maintenance procedures. It breaks down each maintenancetask into a series of step-by-step instructions, and lists the tools and materialsrequired.
Note: Your network may not include all of the hardware modules covered in thishandbook.
Whats New In Edition 04
Overall document quality was improved following an editorial review.
In Edition 03Key set notice was added. Refer to :
Replace Micro Node B Unit (Section 1.2.3)
Replace ACCO (Section 1.4)
Replace MCON (Section 1.5).
Step to set the code server path was added. Refer to Replace Micro Node BUnit (Section 1.2.3).
In Edition 02
The MBBC handling feature was added. Refer to Replace Micro Node BUnit (Section 1.2).
Overall document quality was improved following an editorial review.
In Edition 01
First official release of document.
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Preface
Audience This handbook is intended for:
Maintenance engineers
System support engineers
Network technicians
Network operators.
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Preface
Assumed Knowledge You must have a basic understanding of the following:
Evolium Radio Network Subsystem (RNS) operations and maintenance
Managed object hierarchies for the Micro Node B
RNS hardware configurations
Network Element Manager for the Node B (NEM-B)
The Operation and Maintenance Center-Radio (A1353-UR OMC-R)
Telecommunications engineering
Anti-static rules and procedures.
Frequency meters.
You must be familiar with general safety requirements, rules and procedures.Refer to the General Safety Instructions for Evolium Node B / BTS.
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Preface
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1 Replace Micro Node B RITs
1 Replace Micro Node B RITs
This section describes how to replace the A9112 Micro Node B and SideSupport Cabinet RITs.
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1.1 Replacement Principles
1.1.1 Prerequisites
The following prerequisites apply to replacement procedures:
You must read the General Safety Instructions for Evolium Node B / BTS
before performing any maintenance procedures.
Become familiar with electrostatic precautions.
Know how to use the Evolium Node B terminal.
Establish an efficient means of communication with an A1353-UR OMC-R
operator in order to perform Micro Node B commands when required.
1.1.2 Tools and Materials
The operator must have:
An anti-static wrist strap
Hand tools specified in the relevant procedures
A serviceable replacement RIT with an identical part number, unless
stated otherwise.
1.1.3 Impact on System
The impact on the system depends on the nature of the RIT and its position inthe system. Refer to the specific replacement procedures in this section.
1.1.4 Restrictions
None.
1.2 Replace Micro Node B Unit
For detailed information on the Micro Node B, refer to Micro Node B Mechanicsin the Evolium A9112 Micro Node B Hardware Description.
1.2.1 Micro Node B Versions
Micro Node B is equipped with one of the following BB versions:
MBBA is the first-generation BB board in Micro Node 3BK26791 AACx.
MBBC is the second-generation BB board in Micro Node 3BK26791 ABAx.
Only a Micro Node B equipped with MBBC is HSDPA-capable.Therefore, if HSDPA is in use or planned, never replace an MBBC-equippedMicro Node B with an MBBA-equipped Micro Node B.You can, however, replace an MBBA-equipped Micro Node B with anMBBC-equipped Micro Node B under any circumstances.
To identify the Micro Node B version you can:
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Refer to the equipment label on the right side of the Micro Node B housing.
Refer to [ Labels ] in the Evolium A9112 Micro Node B Hardware Description.
Use the Node B terminal and check the RIT name in Tree View, Hardware
Modules, Baseband Unit, RIT Name. Refer to the Evolium Node B NEM-B
User Guide.
1.2.2 Tools and Impacts
1.2.2.1 Tools and Materials
The operator must have:
A small flathead screwdriver
A medium flathead screwdriver
A medium crosshead screwdriver
Pliers for antenna disconnection
A TORX screwdriver
Equipment suitable for lifting the Micro Node B housing from its mounting
Node B terminal and an Ethernet (100Base TX category5/UTP Cross)
communication link cable to connect it to the MMI-ETH port. The MMI-ETH
port is located on the MCON of the COBO.Refer to the Evolium Node B NEM-B User Guide for information on how touse the terminal.
1.2.2.2 Impact on System
All telecommunications resources are lost when the Micro Node B is locked.
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1.2.3 Replace Micro Node B Unit
Heavy EquipmentThe Micro Node B weighs 25 kg. Injury to personnel and damage to equipmentcan result if it is dropped or otherwise mishandled.
Use suitable equipment to lift the Micro Node B. Do NOT lift it from the mountingframe until it is properly supported.
1.2.3.1 Dismount Micro Node B
If the protective cover is used, go to step (1). If no protective cover is used,go to step (2).
Heavy EquipmentUse suitable equipment to lift the Micro Node B. Do NOT lift it from the mountingframe until it is properly supported.
To dismount the Micro Node B:
1. Open the front protective cover on the Micro Node completely until the frontcover is fastened with the magnetic clip to access the COBO.
2. Loosen the retaining bolts on the front cover of the COBO and removeit from the COBO base.
3. Connect the Node B terminal to the MMI-ETH port on the MCON in theCOBO. See the figure MCON Layout (5)for the position of the MMIconnector.
4. Use the Node B terminal to display the following information and noteit for use later in the procedure:
All module states
All outstanding alarms
All basic configuration
All IP settings.
If connection to the Micro Node B is not possible (for example, if the internalhardware crashes), go directly to step 8.
5. Use the Node B terminal to set the Micro Node B communication state tooffline (allocation of configuration rights). This prohibits A1353-UR OMC-Rmanagement.
6. Use the Node B terminal to back up the Micro Node B configuration data.Enter the backup FTP root directory. The MSUMU then automatically putsthe backup file on the FTP server.
7. Use the Node B terminal to set the Micro Node B administrative state tolocked. This removes telecommunications traffic.
8. Remove the AC power plug from the bottom of the Micro Node B.
If the optional fan module is installed in the cover top, disconnect the powerand alarm cables to the fan from the COBO. See the figure ACCO Layout (4)
for the position of the AC and fan connectors.
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9. If the protective cover is used, loosen its retaining bolts and remove the frontcover. Otherwise continue with the next step.
Protective CoverFully in Place
Figure 1: Micro Node B Installed with Protective Cover
10. Remove the antenna connectors at the bottom of the Micro Node B, carefullynoting their positions for reconnection.
11. Place the lifting equipment (manual lift with handwheel and handle, or crane)in position next to the mounting frame and secure it to the Micro Node B.
12. Loosen the bolts that secure the Micro Node B in position (two bolts on theCOBO and two bolts on the top of the Micro Node B housing).
13. Lift the Micro Node B clear of the mounting points at the top of the mountingframe and free of the Micro Node B connector at the top of the COBO.
Rear sectionof protectivecover
A9112 Mirco Node B
COBO
Protective CoverPartly Removed
Figure 2: Micro Node B Housing Installed
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1.2.3.2 Install Micro Node B
To install the new Micro Node B:
1. Lift the replacement Micro Node B onto the mounting points at the top of themounting frame. Then, lower the Micro Node B carefully onto the mountingframe to engage with the Micro Node B connector at the top of the COBO.
2. Tighten the four bolts (two bolts on the COBO and two bolts on the top of theMicro Node B housing.) to secure the Micro Node B in position.
3. Detach the lifting equipment from the Micro Node B and pull it clear fromthe mounting frame.
4. Replace the antenna connectors. Make sure you connect it to the correctconnector.
5. Tighten the screw-connector by hand, then shake the cable a little. Using thespecific tightening tool, tighten firmly with the torque listed below.
RF Connector Type Torque [Nm]
N 0.7 - 1.1
7/16 25
6. Reconnect the AC power plug to the bottom of the Micro Node B.
7. If applicable, reconnect the power and alarm cables to the fan from theCOBO.
8. Replace the front protective cover in position over the Micro Node B.
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1.2.3.3 Restore Telecommunications Resources
To restore telecommunications resources:
1. Power on the Micro Node B. Wait until the green LED PS_OK and yellowLED OP are lit up. If power is on and OK, the Micro Node B is operational.
2. Use the Node B terminal to check that the communication state indicatoris green (Micro Node B is offline). Otherwise, set the Micro Node Bcommunication state to offline (allocation of configuration rights). Thisprohibits A1353-UR OMC-R management.
3. Use the Node B terminal to lock the Micro Node B.
4. Use the Node B terminal to enter the Micro Node B IP address and namesas noted in step 4 of the dismount procedure.
If connection to the old Micro Node B is not possible, if for example the MicroNode B crashes, ask the A1353-UR OMC-R operator for the basic configurationand IP address settings for the new Micro Node B.
5. Use the Node B terminal to trigger a software replacement of the MicroNode B to ensure the correct software is loaded on the new Micro Node B.Use the Node B terminal to set the code server path in the SUMU to allowoperational software download. Refer to Set CodeServer in the EvoliumNode B NEM-B and RIUT User Guide.
6. Use the Node B terminal to restore the configuration data as noted in step6 of the previous procedure, using the same FTP server address. TheMicro Node B performs an auto-reset and reboots. Check that the MicroNode B is unlocked; if not, unlock it.
7. Use the Node B terminal to display the states of all the modules and all theoutstanding alarms and ensure they are the same as those in step 4.
8. Use the Node B terminal to set the Micro Node B communication state toonline (release the configuration rights). This re-enables A1353-UR OMC-Rmanagement.
After this local operation, the user and the password falls back to the initialstate (default keyset). Inform the OMC-R operator to assign the correct keyset to this Node B.Refer to the Evolium A1353-UR OMC-R Administration Handbook.
9. Contact the A1353-UR OMC-R for confirmation of site status and examinethe test calls for the final check.
10. Disconnect the Node B terminal.
11. Replace the COBO front cover in position over the base, and then tightenthe retaining bolts.
12. Close the protective cover, if applicable.
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1 Replace Micro Node B RITs
1.3 Replace Fuses and E1 Lightning Protection in COBO
The following RITs are located inside the COBO:
Fuses for Micro Node B power supply and fan
E1 lightning protection.
The COBO is located inside the bottom section of the protective cover onthe Micro Node B.
For detailed information on this unit, refer to COBO in the Evolium A9112Micro Node B Hardware Description.
1.3.1 Tools and Materials
You must have:
A medium flathead screwdriver
An Allen key for COBO hatch
The Node B terminal and an Ethernet (100Base TX category5/UTP Cross)
communication link cable to connect it to the MMI-ETH port. The MMI-ETH
port is located on the MCON of the COBO. Refer to the Evolium Node B
NEM-B User Guide for information on how to use the terminal.
1.3.2 Impact on System
All telecommunications resources are lost when the Micro Node B is locked.
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3 4
1 2 3 4
1 2 3 4
L
PE
N
L L
L
PE PE
PE
N N
N
L
L
N
N Fan AC Mains in
X402
X400
1 2 3
1 2 3
1 2 3
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3
1 2 3
1 2 3
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3 4
1 2 3
1 2 3
1 2 3
11 2
1 2
1 2
1 2
ACCO
X320
X202
OM_TR
Fault
OP
GND
X102
X302
X303 E1 P1/P2 X101
X200
X321
X322 E1 P3/P4
X106X107
X105
X104
X103
PS_OK
X203
X100
E1 P1
E1 P2
E1 P3
E1 P4
Ant. Tilt
RX
TX
GND
X313 X327
X310
X311
X312
X314
X315
X316
75Ohm120
75
Ohm120
UMTS
Frame
Trace
CLXCal.
PMS
COBO Ext.Alarm 7+8
Ext.Alarm 5+6
Ext.Alarm 3+4
Ext.Alarm 1+2
MMI
Link M_OKX204
MCON
Door
switch
Figure 3: COBO with MCON and ACCO
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1.3.3 Remove Fuses and E1 Lightning Protection
Equipment Shock HazardPossible death or serious physical harm to personnel and damage to equipmentcan result if the power to the equipment is not removed.
To remove a fuse or lightning protection unit:
1. If applicable, open the front protective cover on the Micro Node B completelyuntil the front cover is fastened by the magnetic clip to access the COBO.
2. Loosen the retaining bolts on the front cover of the COBO and removeit from the COBO base.
3. Connect the Node B terminal to the MMI-ETH port on the MCON inthe COBO. See the figure MCON Layout (5) for the position of the MMIconnector.
4. Use the Node B terminal to note module states and alarms.
5. Use the Node B terminal to set the Micro Node B communication state tooffline (allocation of configuration rights). This prohibits A1353-UR OMC-Rmanagement.
6. Use the Node B terminal to set the Micro Node B administrative state tolocked. This removes telecommunications traffic.
7. Switch the:
AC power supply to the COBO OFF
Side Support Cabinet supply to COBO, if appropriate.
8. Remove the appropriate faulty fuse or protection unit. The following items
are replaceable:
Micro Node B power supply fuses (2 x 2.5 A) and fan fuses (2 x 1.25 A)Refer to the figure ACCO Layout (4)for the position of the AC and fanfuses.
E1 lightning protection (eight modules).Refer to the figure MCON Layout (5)for the position of the E1 lightningprotection elements.
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1.3.4 Replace Fuses and E1 Lightning Protection
To replace a fuse or lightning protection unit:
1. Insert the new power supply fuse or E1 lightning protection unit.
2. Switch the AC power supply ON to the COBO.
Switch the SSCsupply ON to the COBO, if appropriate.
3. Wait until the green LED PS_OK and yellow LED OP are lit up. If power ison and OK, the Micro Node B is now operational.
4. Use the Node B terminal to check that the communication state indicatoris green (Micro Node B is offline). Otherwise, set the Micro Node Bcommunication state to offline (allocation of configuration rights). Thisprohibits A1353-UR OMC-R management.
5. Use the Node B terminal to display the states of all the MOs and allthe outstanding alarms.
6. Use the Node B terminal to set the Micro Node B communication state to
online (release the configuration rights). This re-enables A1353-UR OMC-Rmanagement.
7. Use the Node B terminal to set the Micro Node B state to unlocked.
After this local operation, the user and the password falls back to the initialstate (default keyset). Inform the OMC-R operator to assign the correct keyset to this Node B.Refer to the Evolium A1353-UR OMC-R Administration Handbook.
8. Contact the A1353-UR OMC-R for confirmation of site status and examinetest calls for the final check.
9. Disconnect the Node B terminal.
10. Replace the COBO front cover in position over the base, and then tightenthe retaining bolts.
11. Close the bottom section of the front protective cover on the Micro NodeB, and lock it.
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1.4 Replace ACCO
The ACCO is located inside the COBO and contains the AC lightning protection.To replace the lightning protection, you must replace the entire ACCO board.
For detailed information on this unit, refer to ACCO in the Evolium A9112
Micro Node B Hardware Description.
1.4.1 Tools and Materials
You must have:
A medium flathead screwdriver
Allen key for COBO hatch
TORX and Pozidriv screwdriver
Node B terminal and an Ethernet (100Base TX category5/UTP Cross)
communication link cable to connect it to the MMI-ETH port. The MMI-ETH
port is located on the MCON of the COBO. Refer to the Evolium Node B
NEM-B User Guide for information on how to use the terminal.
1.4.2 Impact on System
All telecommunications resources are lost when the Micro Node B is locked.
L
PE
N
L L
L
PE PE
PE
N N
N
L
L
N
N Fan
Fuses BTS(Node B)T2,5A
Fuses FanT1,25A
AC Mains in
AC Out toMicro Node B
X402
X401
X400
Figure 4: ACCO Layout
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1.4.3 Remove ACCO
Equipment Shock HazardPossible death or serious physical harm to personnel and damage to equipmentcan result if power to the equipment is not shut down.
To remove the ACCO RIT:
1. If applicable, open the front protective cover on the Micro Node B until thefront cover is fastened with the magnetic clip to access the COBO.
2. Loosen the retaining bolts on the front cover of the COBO and removeit from the COBO base.
3. Connect the Node B terminal to the MMI-ETH port on the MCON in theCOBO. See the figure MCON Layout (5)for the position of the MMIconnector.
4. Note MO states and alarms.
5. Use the Node B terminal to set the Micro Node B communication state tooffline (allocation of configuration rights). This prohibits A1353-UR OMC-Rmanagement.
6. Use the Node B terminal to set the Micro Node B administrative state tolocked. This removes telecommunications traffic.
7. Switch the:
AC power supply OFF to the COBO
SSCsupply OFF to the COBO, if appropriate.
8. Disconnect the AC power connections from the AC Mains In clamp strip,
carefully noting their positions for reconnection.
9. If applicable, repeat step 8for the AC power connections to the top fan.
10. Unplug the AC connector that is hard-wired to the ACCO and plugged intothe bottom of the Micro Node B through the top side of the COBO.
11. Remove the four screws from the corners of the ACCO and remove theboard from the COBO.
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1.4.4 Replace ACCO
To replace the ACCO RIT:
1. Insert the replacement ACCO and replace the four screws securing itto the COBO.
2. Plug the AC connector that is hard-wired to the ACCO into the bottom of theMicro Node B through the top side of the COBO.
3. If applicable, reconnect the AC power to the top fan.
4. Reconnect the AC power connections to the AC Mains In clamp strip.
5. .Switch the:
AC power supply ON to the COBO
SSCsupply ON to the COBO, if appropriate.
6. Wait until the green LED PS_OK and yellow LED OP are lit up. If poweris on and OK, the Micro Node B is operational.
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1.4.5 Final Checks
1. Use the Node B terminal to check that the communication state indicatoris green (Micro Node B is offline). Otherwise, set the Micro Node Bcommunication state to offline (allocation of configuration rights). Thisprohibits A1353-UR OMC-R management.
2. Use the Node B terminal to display the states of all the modules and allthe outstanding alarms.
3. Use the Node B terminal to set the Micro Node B communication state toonline (release the configuration rights). This re-enables A1353-UR OMC-Rmanagement.
4. Use the Node B terminal to set the Micro Node B state to unlocked.
After this local operation, the user and the password falls back to the initialstate (default keyset). Inform the OMC-R operator to assign the correct keyset to this Node B.Refer to the Evolium A1353-UR OMC-R Administration Handbook.
5. Contact the A1353-UR OMC-R for confirmation of site status and examinetest calls for the final check.
6. Disconnect the Node B terminal.
7. Replace the COBO front cover in position over the base, and then tightenthe retaining bolts.
8. Close the bottom section of the front protective cover on the Micro NodeB, and lock it.
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1.5 Replace MCON
The MCON is located inside the COBO.
For detailed information on this unit, refer to MCON in the Evolium A9112Micro Node B Hardware Description.
Heavy EquipmentThe Micro Node B weighs 25 kg. Injury to personnel and damage to equipmentcan result if it is dropped or otherwise mishandled.Use suitable equipment to lift the Micro Node B. Do NOT lift it until it isproperly supported.
1.5.1 Tools and Materials
You must have:
A small flathead screwdriver
A medium flathead screwdriver
A medium crosshead screwdriver
A TORX screwdriver
Equipment suitable for lifting the Micro Node B housing
Node B terminal and an Ethernet (100Base TX category5/UTP Cross)
communication link cable to connect it to the MMI-ETH port. The MMI-ETH
port is located on the MCON of the COBO. Refer to the Evolium Node B
NEM-B User Guide for information on how to use the terminal.
1.5.2 Impact on System
All telecommunications resources are lost when the Micro Node is locked.
X320
X202
OM_TR
Fault
OP
GND
X102
X302
X303 E1 P1/P2 X101
X200
X321
X322 E1 P3/P4
X106X107
X105
X104
X103
PS_OK
X203
X100
E1 P1
E1 P2
E1 P3
E1 P4
Ant. Tilt
RX
T
X
GN
D
X313 X327
X310
X311
X312
X314
X315
X316
75
Ohm120
75Ohm120
UMTS
Frame
Trace
CLX
Cal.
PMS
COBO Ext.Alarm 7+8
Ext.Alarm 5+6
Ext.Alarm 3+4
Ext.Alarm 1+2
MMI
Link M_OKX204
Door
switch
Figure 5: MCON Layout
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1.5.3 Prepare MCON Removal
Equipment Shock HazardPossible death or serious physical harm to personnel and damage to equipmentcan result if power to the equipment is not shut down.
Before removing the MCON RIT:
1. If applicable, open the front protective cover on the Micro Node B completelyuntil the front cover is fastened by the magnetic clip to access the COBO.
2. Loosen the retaining bolts on the front cover of the COBO and removethe cover from the COBO base.
3. Connect the Node B terminal to the MMI-ETH port on the MCON in theCOBO. See the figure MCON Layout (5)for the position of the MMIconnector.
4. Use the Node B terminal to set the Micro Node B communication state to
offline (allocation of configuration rights). This prohibits A1353-UR OMC-Rmanagement.
5. Use the Node B terminal to set the Micro Node B administrative state tolocked. This removes telecommunications traffic.
6. Using the Node B terminal, display and note the following information for usein Final Checks (Section 1.5.6) :
Antenna mapping
External alarm mapping
Additional modules (for example: cover, fan, SSC, VSWR)
Micro Node B site name.
7. Switch the:
AC power supply OFF to the Micro Node B
SSCsupply OFF to the Micro Node B, if appropriate.
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1.5.4 Remove MCON
To remove the MCON RIT:
1. Disconnect the E1 cables from ports 1 to 4, carefully noting the position ofeach wire for reconnection.
2. Disconnect the alarm cables from the alarm clamp strips, carefully noting theposition of each wire for reconnection.
3. Detach the GND cable from the MCON board.
4. Remove the AC power plug from the bottom of the Micro Node B.
If the optional fan module is installed in the top of the cover, disconnect thepower and alarm cables to the fan from the COBO.
5. If the protective cover is used, loosen its retaining bolts and remove the frontcover. Otherwise continue with the next step.
6. Remove the antenna connectors at the bottom of the Micro Node B, carefullynoting their positions for reconnection.
7. Place the lifting equipment (manual lift with handwheel and handle, or crane)in position next to the mounting frame and secure it to the Micro Node B.
8. Loosen the bolts that secure the Micro Node B in position. (Two bolts on theCOBO, two bolts on the top of the Micro Node B.)
9. Lift the Micro Node B carefully several centimeters until connectors X100and X320 at the top of the MCON board are free. Then dismount the MicroNode B completely and remove it until the MCON is replaced.
10. Disengage the MCON from the Micro Node B connector at the top edge ofthe board, and remove it from the COBO.
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1.5.5 Replace MCON
To replace the MCON RIT:
1. Insert the replacement MCON in the COBO.
2. Replace the Micro Node on the MOFRA. Then lower the Micro Node
B carefully onto the mounting frame to engage with the Micro Node Bconnector at the top of the MCON.
3. Tighten the four bolts (two at the top of the housing, two attached to COBO)to secure the Micro Node B in position.
4. Detach the lifting equipment from the Micro Node B and pull it clear fromthe mounting frame.
5. Replace the front protective cover in position over the Micro Node B.
6. Connect the GND cable to the MCON board.
7. Reconnect the E1 and alarm cables to the clamp strips.
8. Replace the antenna connectors. Make sure you connect it to the correctconnector.
9. Tighten the screw antenna connector by hand, then shake the cable a little.Using the specific tightening tool, tighten firmly with the torque listed below.
RF Connector Type Torque [Nm]
N 0.7 - 1.1
7/16 25
10. Switch the
AC power supply ON to the COBO.
SSCsupply ON to the COBO, if appropriate.
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1.5.6 Final Checks
1. Using the Node B terminal, update the following as noted in step 6in PrepareMCON Removal.
Antenna mapping
External alarm mapping
Additional modules (for example: Cover, fan, SSC, VSWR)
Micro Node B site name.
2. Using the Node B terminal, update the Remote Inventory EEPROM with thecommissioning (current installation) date.
3. Using the Node B terminal, unlock the Micro Node B.
After this local operation, the user and the password falls back to the initialstate (default keyset). Inform the OMC-R operator to assign the correct key
set to this Node B.Refer to the Evolium A1353-UR OMC-R Administration Handbook.
4. Using the Node B terminal, check that there are no outstanding alarms onthe Micro Node B.
5. Disconnect the Node B terminal.
6. Replace the COBO front cover in position over the base, and then tightenthe retaining bolts.
7. Close the bottom section of the front protective cover on the Micro NodeB, and lock it.
1.6 Replace Fan Cassette
The optional fan cassette is located inside the top of the protective cover (withfan) on the Micro Node B.
For detailed information on this unit. Refer to Top Cover with Fan Cassette inthe Evolium A9112 Micro Node B Hardware Description.
1.6.1 Tools and Materials
You must have:
A big flathead screwdriver
Node B terminal and an Ethernet (100Base TX category5/UTP Cross)
communication link cable to connect it to the MMI-ETH port. The MMI-ETH
port is located on the MCON of the COBO. Refer to the Evolium Node B
NEM-B User Guide for information on how to use the terminal.
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1.6.2 Impact on System
There is no loss of telecommunications resources when the fan module isreplaced.
Figure 6: Fan Casette
1.6.3 Replace Fan Cassette
To replace a fan cassette RIT:
1. Unlock the top section of the front protective cover on the Micro Node B,and open it to expose the fan cassette inside.
2. Disconnect the cable coupling of the fan cassette and remove the fan
cassette from the housing; that is, place the flathead screwdriver into oneof the grooves in the middle of the frame of the fan cassette to disengagethe cassette. Simultaneously place the strap at the end of the fan cassetteand pull it out.
3. Replace it with a new cassette, engage it, and connect the cable coupling.
4. Close the top section of the front protective cover on the Micro NodeB and lock it.
5. Unlock the bottom section of the front protective cover on the Micro Node B,open it upwards, and fasten it to the front cover with an installed magneticsnap-on fastening to expose the COBO.
6. Loosen the retaining bolts on the front cover of the COBO and remove the
front cover from the COBO base.
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1.6.4 Final Checks
1. Connect the Node B terminal to the MMI port inside the COBO.
2. Check Micro Node B status.
3. Using the Node B terminal, set the part number in the Micro Node B remote
inventory Additional Module field.
4. Using the Node B terminal, check that there are no outstanding alarms onthe Micro Node B.
5. Disconnect the Node B terminal.
6. Replace the COBO front cover in position over the base, and then tightenthe retaining bolts.
7. Close the bottom section of the front protective cover on the Micro NodeB, and lock it.
1.7 Replace Top of Cover with Fan
The optional top of cover with fan is located at the top of the protective cover ofthe Micro Node B instead of the normal top cover.
Note: The Micro Node Bs installed in the field can have covers of different colors. It isimportant to select a replacement top of cover with the correct color beforestarting the replacement procedure.
For detailed information on this unit, refer to the section Top Cover with FanCassette in the Evolium A9112 Micro Node B Hardware Description.
1.7.1 Tools and Materials
You must have:
A medium crosshead screwdriver
An Allen key (M4)
Side cutting pliers
Two cable ties, approximately 10 cm in length
Node B terminal and an Ethernet (100Base TX category5/UTP Cross)
communication link cable to connect it to the MMI-ETH port. Refer to
the Evolium Node B NEM-B User Guide for information on how to use
the terminal.
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1.7.2 Impact on System
There is no loss of telecommunications resources when the top of cover withthe fan module is replaced.
Figure 7: Top of Cover with Fan
1.7.3 Remove Top of Cover
To remove the top of cover with fan RIT:
1. Unlock the bottom section of the front protective cover on the Micro Node B,open it upwards, and fasten it to the front cover with the installed magneticsnap-on fastening.
2. Loosen the retaining bolts on the front cover of the COBO and remove
it from the COBO base.
3. Connect the Node B terminal to the MMI-ETH port on the MCON in theCOBO.
4. Using the Node B terminal, note the alarms and the additional modulesettings for the fan hat.
5. Disconnect the couplings of the two cables which connect the COBO andthe top of cover with fan. If secured, cut the cable ties.
6. Loosen the two retaining screws of the front cover of the Micro Node B onboth sides of the cover. Lift up the complete front/bottom/top cover andremove it from the Micro Node B.
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1.7.4 Replace Top of Cover
To replace the top of cover with fan RIT:
1. Cut the cable ties at the inside of the front cover.
2. Loosen the three retaining screws of the top of cover, replace the top of
cover with a new one, and tighten the retaining screws.
3. Secure the two cables of the top of cover with fan module inside the frontcover by using cable ties.
4. Lift up the complete front/bottom/top cover, place it over the Micro Node Band the protective back panel, tighten the retaining screws, and connectthe cable couplings.
5. Loosen the retaining bolts on the front cover of the COBO and removeit from the COBO base.
1.7.5 Update Remote Inventory
To update the Micro Node B remote inventory:
1. Connect the Node B terminal to the MMI port inside the COBO.
2. Using the Node B terminal, set the part number in the Micro Node B remoteinventory Additional Module field.
3. Using the Node B terminal, check that there are no outstanding alarms onthe Micro Node B.
4. Disconnect the Node B terminal.
5. Replace the COBO front cover in position over the base, and then tightenthe retaining bolts.
6. Close the bottom section of the front protective cover on the Micro NodeB, and lock it.
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1.8 Replace Site Support Cabinet RITs
The following figure shows the position of the different RITs inside the SSC.
For detailed information on this unit, refer to Site Support Cabinet (SSC) in theEvolium A9112 Micro Node B Hardware Description.
PS3
External Fan Cover
For optional equipment
AC/DC Converter (SSCPS)
SSC Battery (SSCB)
Main Power Switch
AC Connection Field
External Fan (SSCF)
Fan & Heater Internal(SSCFH)
Connector Field(SSCFH)
PS2PS1
Figure 8: SSC, Position of RITs
Heavy EquipmentThe battery unit weighs 32 kg. Injury to personnel and damage to equipmentcan result if it is dropped or otherwise mishandled.Be careful when moving or lifting the battery unit.The battery unit must be handled by two people, one on the right with onehand on the lower side and one on the left with one hand on the front doorpanel handle.
1.8.1 Replace SSC Battery
The RIT part number of the SSC battery is 3BK 25016 AA.
The module can be replaced without switching off the power.
1.8.1.1 Tools and Materials
You must have:
A small crosshead screwdriver
A medium crosshead screwdriver
Two people to handle the SSCB.
1.8.1.2 Impact on System
None.
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1.8.1.3 Remove SSCB
To remove the SSCB RIT:
1. Insert the key in the door lock and turn it clockwise to unlock the door. Turnthe doorknob to the release position, and then pull the door open.
2. Press [ Back up ] in the Connector Field. The red LED on the right turns ON.
3. Disconnect the following cables:
Ventilation valve cable
X8 and X9 cables
Temperature sensor cable from its coupling
Ground cable.
Ventilation valve cable
6pole MateNLocksTemperature sensor
cable coupling
Front panel handle
Ground cable(yellow/green)
Distribution clamp
Fuse box coverRetaining screws
X8
X9
Figure 9: SSC, Battery Connections
4. Disconnect both cables connected to X8 and X9.
5. Disconnect (pull apart) the temperature sensor cable coupling.
6. Disconnect the ground cable (yellow/green) on the distribution clamp fromthe bottom right side.
7. Remove the four retaining screws on the front cover of the battery unit.
8. Slide out the battery unit on the rails and then lift it off.
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1.8.1.4 Replace SSCB
To replace the SSCB RIT:
1. Make sure that the back holding clamps are in position. If they are not, thebattery cannot be correctly inserted.
2. Slide in a new charged battery unit on the rails at a 20 angle.
Figure 10: SSC, Installation of Battery Unit
3. Push the battery unit to the back.4. Push the front part down until the battery unit is in a horizontal position.
5. Secure the battery unit to the front panel with four screws and specialwashers.
6. Open the cover of the fuse box on the battery unit and feed the ground cablethrough the rubber nozzle and then close the cover.
7. Reconnect the following cables:
The ground cable to the yellow/green distribution clamp on the right side
on the bottom of the SSC (as disconnected in step 6of "Remove SSCB")
The temperature sensor cable coupling (as disconnected in step 5of"Remove SSCB")
The two 6-pole Mate-N-Locks (these can be used in any order as false
polarity is protected by a mechanical code)
Feed the ventilation valve in the cable entry area through a PG gland
on the bottom and into the free cable screw joint on the battery unit.
Then fasten the screw joint.
8. Press the [ Back up ] button in the Connector Field. The red LED on theright goes OUT.
9. Close and lock the door.
1.8.2 Replace SSC Power Supply
The RIT part number of the SSCPS is 3BK 25011 AA.
The module can be replaced without switching off the power.
1.8.2.1 Tools and Materials
You must have a small, pointed, flathead screwdriver.
1.8.2.2 Impact on System
None.
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1.8.2.3 Replace SSCPS
To replace a SSCPS RIT:
1. Insert the key in the door lock and turn it clockwise to unlock the door. Turnthe doorknob to the release position, and then pull the door open.
2. Loosen the four retaining screws of the SSCPS to be replaced.
3. Pull out the SSCPS and replace it with a new one.
4. Fasten the retaining screws.
5. Check that the corresponding green LED in the Connector Field is ON. PS1corresponds to POWER SUPPLY 1, PS2 corresponds to POWER SUPPLY2, and PS3 corresponds to CHARGER.
PS2 PS3
Fan test
Connector Field
POWER
SUPPLY 2
CHARGER
MAIN
Back up
LEDs
POWER
SUPPLY 1
Figure 11: SSCPS, LED Location
6. Close and lock the door.
1.8.3 Replace SSC Fan and Heater
The RIT part number of the internal SSCFH is 3BK 25015 AA.
The module can be replaced without switching off the power.
Very Hot EquipmentThe heating spiral of the SSCFH can become very hot and can cause burns topersonnel if not handled carefully.Exercise caution when handling the SSCFH.
1.8.3.1 Tools and Materials
You must have:
A small, pointed, flathead screwdriver
A medium crosshead screwdriver.
1.8.3.2 Impact on System
None.
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1.8.3.3 Replace SSCFH
To replace the SSCFH RIT:
1. Insert the key in the door lock and turn it clockwise to unlock the door. Turnthe doorknob to the release position, and then pull the door open.
2. Disconnect the power supply cable and the inner and outer fan cables.
etaining screw ower supp y ca e nner/outer an ca e
Figure 12: SSCFH, Front View
3. Support the SSCFH before removing the two retaining screws (and washers)and then pull it out.
Heating spiral Internal Fan
Outer Fan cable
Figure 13: SSCFH, Internal View
4. Disconnect the outer fan cable wires from the clamps, carefully noting theposition of each for reconnection.
5. Replace the SSCFH with a new one and reconnect the outer fan cablewires to the clamps as noted earlier.
6. Put the new SSCFH in the correct position and fasten it with the tworetaining screws.
7. Reconnect the power supply cable and the inner and outer fan cables as
noted earlier.8. On the Connector Field, press [ FAN-Test ] and check acoustically that the
new fan is running.
9. Press the [ FAN-Test ] again to stop the check.
10. Close and lock the door.
1.8.4 Replace SSC External Fan
The RIT part number of the SSCF is 3BK 25014 AA.
The module can be replaced without switching off the power. To disconnect theconnection cable, you must first remove the SSCFH.
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1.8.4.1 Tools and Materials
You must have:
An M4 single-ended spanner
A small, pointed, flathead screwdriver
A medium crosshead screwdriver.
1.8.4.2 Impact on System
None.
1.8.4.3 Replace SSCF
Very Hot EquipmentThe heating spiral of the SSCFH can become very hot and can cause burns topersonnel if not handled carefully.Exercise caution when handling the SSCFH.
To replace the SSCF RIT:
1. Remove the two retaining screws of the external fan cover at the top ofthe SSC. Lift the front side of this cover and remove it from the lockingdevice at the back.
2. Insert the key in the door lock and turn it clockwise to unlock the door. Turnthe door knob to the release position, and then pull the door open.
3. Disconnect the power supply cable and the inner and outer fan cablesfrom the SSCFH.
4. Support the SSCFH before removing the two retaining screws (and washers)
and then pull it out.
5. Disconnect the outer fan cable wires from the clamps, carefully noting theposition of each for reconnecting the new cable.
6. Feed the outer fan cable through the rubber nozzle at the top of the SSC sothat it can be removed when removing the outer fan.
7. Unscrew the four M4 retaining nuts fastening the outer fan.
8. Remove the outer fan (and cable), replace it with a new one and fasten thenew one with nuts and washers from the old one.
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1.8.4.4 Connect New SSCF
To connect the new SSCF:
1. Feed the new outer fan cable through the rubber nozzle at the top of the SSC.
2. Take the SSCFH and connect the new outer fan cable wires to the clamps asnoted earlier.
3. Put the SSCFH in the correct position and fasten it with the two retainingscrews.
4. Reconnect the power supply cable and the inner and outer fan cables asnoted earlier.
5. On the Connector Field, press [ FAN-Test ] and check that the new fan isrunning.
6. Press the [ FAN-Test ] button again to stop the check.
7. Close and lock the door.
8. Put the cover of the external fan into the locking device at the top of the SSC
and fasten the front side of the cover with two retaining screws.
1.8.5 Replace SSC Connection Field
The RIT part number of the SSCCF is 3BK 25012 AA.
Hot swapping is not allowed.This module cannot be replaced unless the power is switched off.
1.8.5.1 Tools and Materials
You must have:
A small, pointed, flathead screwdriver
Node B terminal and an Ethernet (100Base TX category5/UTP Cross)
communication link cable to connect it to the MMI-ETH port. The MMI-ETH
port is located on the MCON of the COBO. Refer to the Evolium Node B
NEM-B User Guide for information on how to use the terminal.
1.8.5.2 Impact on System
All telecommunications resources are lost when the Micro Node B is locked.
1.8.5.3 Prepare SSCCF Replacement
To prepare the a SSC Connection Field RIT replacement:
1. Unlock the bottom section of the front protective cover on the Micro Node B,open it upwards, and fasten it to the front cover with the installed magneticsnap-on fastening to expose the COBO.
2. Loosen the retaining bolts on the front cover of the COBO and removeit from the COBO base.
3. Connect the Node B terminal to the MMI-ETH port on the MCON in theCOBO.
4. Use the Node B terminal to set the Micro Node B communication state tooffline (allocation of configuration rights). This prohibits A1353-UR OMC-R
management.
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5. Use the Node B terminal to set the Micro Node B administrative state tolocked. This removes telecommunications traffic.
1.8.5.4 Replace SSCCF
To replace a SSC Connection Field RIT:
1. Insert the key in the SSC door lock and turn it clockwise to unlock the door.Turn the door knob to the release position, and then pull the door open.
2. Press [ Back up ] in the Connector Field to activate the red OFF LEDon the right.
3. Turn off the main power switch (position 0).
4. Disconnect all cables connected with the connectors X2, X3, X4, X9, X10,X11, carefully noting the position of each for reconnection.
5. Disconnect all cables connected with the clamps X5, X6, X7, X8, X12 bydisconnecting each discrete wire, carefully noting the position of each wireand each cable for reconnection.
Clamp Group
onnector roup
KRONE
CONNECTOR
X12 X5
X4X3X2
Fantest
CHARGER
MAIN
Back up
OFF
Retaining screw
POWER
SUPPLY 1
POWER
SUPPLY 2
X11X10 X9
X1
X6 X7 X8
Figure 14: SSCCF, Detailed View
6. Remove the six retaining screws at the front plate. Support the front plateand tip it forward.
7. Disconnect the two cables connected at the back of the front plate andremove the front plate.
8. Pull out the electronic part of the SSCCF and replace it with a new one. Makesure that all boards are in their guide rails, then push it fully into the slot.
1.8.5.5 Connect New SSCCFTo connect the new SSCCF RIT:
1. Reconnect the cables of the electronic part of the SSCCF to the back of thefront plate and fasten the front plate with the six retaining screws.
2. Reconnect all cables and wires to the clamps and connectors asdisconnected and noted in steps 4step 5 of "Replace SSCCF".
3. Turn on the main power switch (position 1).
4. If the red backup LED OFF is activated, press [ Back up ] to activate thebackup function (LED OFF is deactivated).
5. On the Micro Node B wait until the green LED PS_OK and yellow LED OPare lit up. If power is on and OK, the Micro Node B is now operational.
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1.8.5.6 Final Checks
1. Use the Node B terminal to check that thecommunication state indicatoris green (Micro Node B is offline). Otherwise, set the Micro Node Bcommunication state to offline (allocation of configuration rights). Thisprohibits A1353-UR OMC-R management.
2. Use the Node B terminal to display the states of all the MOs and allthe outstanding alarms.
3. Use the Node B terminal to set the Micro Node B communication state toonline (release the configuration rights). This re-enables A1353-UR OMC-Rmanagement.
4. Use the Node B terminal to set the Micro Node B state to unlocked.
After this local operation, the user and the password falls back to the initialstate (default keyset). Inform the OMC-R operator to assign the correct keyset to this Node B.Refer to the Evolium A1353-UR OMC-R Administration Handbook.
5. Disconnect the Node B terminal.
6. Replace the COBO front cover in position over the base, and then tightenthe retaining bolts.
7. Close the bottom section of the front protective cover on the Micro NodeB, and lock it.
8. Close and lock the SSC door.
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1.8.6 Replace SSC Lightning Protector
The RIT part number of the lightning protector is 3BK 25013 AA.
This module is located in the AC connection field at the bottom of the SSC. Themodule can be replaced without switching off the power.
1.8.6.1 Tools and MaterialsYou must have a small crosshead screwdriver.
1.8.6.2 Impact on System
None.
1.8.6.3 Replace Lightning Protector
To replace a lightning protector module:
1. Insert the key in the door lock and turn it clockwise to unlock the door. Turnthe doorknob to the release position, and then pull the door open.
2. Remove the four retaining screws on the external cover of the AC connectorfield at the bottom of the SSC, and then lift it off.
The following figure shows the position of the lightning protectors.
N
Lightning Protectors
Top Internal View
L1
PE
Figure 15: SSC, AC Connection Field
3. A red indicator shows which lightning protector must be removed. Pull outthis lightning protector and replace it with a new one.
4. Replace the external cover of the AC connector Field and tighten theretaining screws.
5. Close and lock the door.
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2 Preventive Maintenance
2 Preventive Maintenance
This section describes the Micro Node B preventive maintenance procedures.
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2.1 Recommended Checks
The following table lists the recommended checks that are required for correctMicro Node B operation.
Time Interval Task Impact on System Traffic
* Check lightning protection for SSC (SSCLP). None.
1 year Inspect antenna and Micro Node B external casing. None.
1 year Inspect the batteries for corrosion and damage, andmeasure the battery voltage and temperature.
None.
1 year** Adjust local MSUMU clock None.
* Each time an intervention is performed on the SSC.
**
- Adjust local oscillator frequency if local oscillator is used.
- Adjustment not required if PCM sources are used.
Table 1: Preventive Maintenance, Recommended Checks
2.2 Adjust Local MSUMU Clock
2.2.1 Checks
Check the following:
The MSUMU has had continuous power supply for the previous two hours.
The frequency counter has had the warm-up period specified by the
manufacturer.
The ambient temperature remains constant during the adjustment
procedure.
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2.2.2 Tools and Impacts
2.2.2.1 Tools and Materials
The operator must have:
A frequency counter with a resolution of 0.001 Hz at 2.16 MHz (Fluke
PM6685R, 3BK25198AAAA)
A BNC cable for connecting the frequency counter to the Micro Node B
A Node B terminal and an Ethernet communication link cable (100Base TX
category5/UTP Cross) to connect it to the MMI-ETH port. The MMI-ETH
port is located on the front panel of the MSUMU.Refer to the Evolium Node B NEM-B User Guide for information on how touse the terminal.
2.2.2.2 Impact on System
None.
2.2.3 Adjust Clock
The clock adjustment is applicable when the Node B clock is in free runningmode only.
2.2.3.1 Connect Frequency Counter
To connect the frequency counter:
1. Unlock the bottom section of the front protective cover on the Micro Node B,
open it upwards, and fasten it to the front cover with the installed magneticsnap-on fastening to expose the COBO.
2. Loosen the retaining bolts on the front cover of the COBO and removeit from the COBO base.
3. Connect the Node B terminal to the MMI-ETH port on the MCON in theCOBO.
4. Install and start the frequency counter.
5. Connect the frequency counter to the clock output connector X102 onMCON.
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2.2.3.2 Adjust Local MSUMU Clock
To adjust the local MSUMU clock:
1. Open the NEM-B Clock Configuration window and note the CurrentClock Synchronization value. Set the Clock Synchronization mode tofree-running.
2. On the frequency counter:
Select a high input impedance (1 MOhm).
Select a long measurement time (at least 10 seconds).
Choose a high sensitivity level (about 2 V).
Check that the frequency counter warm-up is sufficient (minimum of 10minutes).
3. Wait until triggering occurs on the input signal port of the frequency counter.Then proceed as follows:
If the indicated frequency is between 2 166 666.658 Hz and 2 166
666.676 Hz, go to step 5.
If not, an adjustment is necessary. Go to step 4.
4. Use the Node B terminal (see theEvolium Node B NEM-B User Guide) toadjust the MBS clock for a frequency of between 2 166 666.658 Hz and2 166 666.676 Hz.
5. When the adjustment is finished, open the Clock Configurationwindow andreset the Clock Synchronization to its initial value as noted in step 1.
6. Disconnect the frequency counter from MCON.
7. Disconnect the MMI cable from the MCON and remove the terminal.
8. Replace the COBO front cover in position over the base, and tighten theretaining bolts.
9. Close the bottom section of the front protective cover on the Micro NodeB, and lock it.
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2 Preventive Maintenance
2.3 Recommended Replacements
The following item replacements are recommended, but not mandatory,according to the life expectancy provided by the component suppliers. Failureof these modules does not directly impact Micro Node B operations.
Time Interval Task Impact on System Traffic
4-6 years Replace Micro Node B optional fan cassette:
Every 4 years, if ambient temperature > 25 C
Every 6 years, if ambient temperature
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