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DN9913495
Issue 3-0 en
Nokia MetroSite EDGE Base Station
Maintenance
© Nokia Corporation
Nokia Proprietary and Confidential
Draft
1 (52)

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Table of Contents

   Related Manuals for Nokia MetroSite EDGE

   Summary of Contents for Nokia MetroSite EDGE

  • Page 1 Nokia MetroSite EDGE Base Station Maintenance Draft DN9913495 © Nokia Corporation 1 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 2 This documentation is intended for the use of Nokia's customers only for the purposes of the agreement under which the documentation is submitted, and no part of it may be reproduced or transmitted in any form or means without the prior written permission of Nokia.
  • Page 3 Hereby, Nokia Corporation, declares that this product is in compliance with the essential requirements and other relevant provisions of Directive: 1999/5/EC. 0523 The product is marked with the CE marking and Notified Body number according to the Directive 1999/5/EC. FCC §15.21 - Information to user - This product is used as an intentional radiated equipment and any changes or modifications on the equipment without any approval...
  • Page 4 Maintenance Draft 4 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 5: Table Of Contents

    About this document 11 Preparations for maintenance 13 Site folder 13 2.1.1 Fault reporting 13 Maintenance equipment 13 2.2.1 Nokia BTS Manager 14 Environmental precautions 14 Power supply precautions 14 Removing the BTS cover 15 Periodic maintenance 17 Maintaining the cabinet 17 3.1.1 Fan unit and air circulation 17 3.1.2...
  • Page 6 LED indicator conditions 47 Transceiver unit LED 47 Transmission unit LED 48 Interface unit LED 48 Power supply unit LED 49 Fan unit LED 49 Index 51 Draft 6 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 7: List Of Tables

    LED conditions for an RRI transmission unit’s Flexbus LED. Table 6. LED conditions for an interface unit Table 7. LED conditions of the power supply unit Table 8. LED conditions for the fan unit Draft DN9913495 © Nokia Corporation 7 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 8: List Of Figures

    Figure 8. TRX slot numbering 31 Figure 9. Example Object Properties window in Nokia BTS Manager (can be used for blocking a TRX) 32 Figure 10. Displacing the sealing strip and releasing the cables 41 Figure 11. HVMF cooling fan assembly and mounting screws 42 Figure 12.
  • Page 9 Note added to 13 MHz clock adjustment chapter that a high stability frequency counter is required. Version 3, October 2002: • BTS Manager 3.0 commands added for replacing transmission unit. Draft DN9913495 © Nokia Corporation 9 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 10 Maintenance Draft 10 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 11: About This Document

    About this document About this document This document gives instructions on the maintenance of the Nokia MetroSite EDGE Base Station (BTS). Read carefully Nokia MetroSite EDGE Base Station: Warnings and Cautions before starting the maintenance work. This document covers the following: •...
  • Page 12 Maintenance Draft 12 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 13: Preparations For Maintenance

    Where possible, correct all damage, failures, and faults and report them to Nokia using the Failure Report Form provided by Nokia Customer Services. Note You can save the alarm information to a log file on your PC with Nokia BTS Manager. Maintenance equipment Check which tools are needed for the type of maintenance being done.
  • Page 14: Nokia Bts Manager

    MetroSite EDGE Base Station: Commissioning. Environmental precautions When the cover of the Nokia MetroSite EDGE Base Station is removed to allow for maintenance work, the following conditions must be considered: Rain or snow must not be allowed to fall on the internal surfaces of the equipment.
  • Page 15: Removing The Bts Cover

    Removing the BTS cover Before removing the cover for internal maintenance of the BTS, refer to the power supply precautions and environmental restrictions presented in this document and to the safety precautions presented in Nokia MetroSite EDGE Base Station: Warnings and Cautions. Note Removing the cover issues an alarm to the BSC.
  • Page 16: Figure 1. Safety Strap On The Metrosite Edge Bts Cover

    (see Figure 1). Fixing point for safety strap under the cover top Figure 1. Safety strap on the MetroSite EDGE BTS cover Draft 16 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential...
  • Page 17: Periodic Maintenance

    Periodic maintenance Periodic maintenance This chapter describes the periodic maintenance of the MetroSite EDGE Base Station. Maintaining the cabinet This section describes the cabinet maintenance measures. 3.1.1 Fan unit and air circulation The fan unit must be cleaned of leaves and debris whenever necessary. To maintain proper circulation of air through the cabinet, air inlets and outlets must not be obstructed.
  • Page 18: Seals

    Periodic testing of the BTS The condition of the hardware in the MetroSite EDGE BTS can be tested periodically by running the Abis loop test and the TRX test remotely from the BSC/NMS.
  • Page 19: Adjusting The 13 Mhz Clock

    Adjusting the 13 MHz clock Adjusting the 13 MHz clock The 13 MHz clock is adjusted using the Nokia BTS Manager PC and a frequency counter. The 13 MHz clock should only need adjusting after a new installation or when the interface unit (VIFA) is replaced.
  • Page 20: Figure 2. 13 Mhz Clock Adjustment

    Nokia BTS Manager Figure 2. 13 MHz clock adjustment Open Nokia BTS Manager on your laptop PC. Open the calibration menu by selecting OBJECTS on the BTS Manager main menu. Select CLOCK CONTROL from the drop-down menu. In the Clock Control window, enter a DAC (digital-to-analogue converter) value which will tune the clock to 13 MHz (±1 Hz).
  • Page 21: Figure 3. Clock Control Window - Coarse Adjustment

    Clock control window - coarse adjustment Fine adjustment of the DAC value slider is achieved by clicking the ‘Use Fine Scale’ check box in the Clock Control window (see Figure 4). Draft DN9913495 © Nokia Corporation 21 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 22: Figure 4. Fine Adjustment Of The Dac Value

    Saving the DAC value permanently will ensure that it remains in the clock memory after reset. When asked if you want to continue, select YES in the dialogue box. Draft 22 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 23: Troubleshooting

    Base Station: Alarm Descriptions. Descriptions of the LED unit status indicators are presented in Chapter 7 of this document. Whenever problems occur in the operation of the BTS, connect the Nokia BTS Manager PC to the interface unit. The LED conditions and the alarm window usually indicate where and what the problem is.
  • Page 24: Troubleshooting Checklist

    6. Cold start active. 6. Wait until the units have warmed up to the operational temperature range and the power supply unit LED turns green. Draft 24 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 25 BCCH unlock from the BSC/NMS TRX and a slave TRX are if necessary. in the ‘Supervisory’ state, but the yellow LED blinks on both TRXs. Draft DN9913495 © Nokia Corporation 25 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 26 Maintenance Draft 26 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 27: Replacing Units

    Replacing units Replacing units This chapter describes how to replace plug-in units in the Nokia MetroSite EDGE Base Station. Caution BSC and/or NMS personnel must be notified before starting to replace or add units to the Nokia MetroSite EDGE Base Station.
  • Page 28: Removing Units

    Handle the units with care. Do not knock the units or place them with their connectors facing the ground. Prevent dirt, water, or snow from entering the connectors. Draft 28 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 29: Figure 7. Removing The Units

    Spare counterparts for unit retaining screws can be found attached to the uppermost TRX guide beam on the top of the BTS (see Figure 7). Draft DN9913495 © Nokia Corporation 29 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 30: Recycling Of Units

    TRX in a single TRX BTS 6.4.1 TRX slot identification The TRX in slot 1 is the master TRX of the Nokia MetroSite EDGE Base Station. Figure 8 shows the numbering order of the TRX slots. Draft 30 (52) ©...
  • Page 31: Replacing A Slave Trx

    Connect your Nokia BTS Manager PC to the LMP connector on the interface unit. Block the TRX using Nokia BTS Manager (if the sector is not already locked from the BSC). In the Supervision - Equipment View window, right click on the TRX image and select the BLOCK button in the Object Properties dialogue window (see Figure 9).
  • Page 32: Figure 9. Example Object Properties Window In Nokia Bts Manager (can Be Used For Blocking A Trx)

    Reconnect the TRX cabling. Run the TRX test from Nokia BTS Manager (optional). With Nokia BTS Manager, right-click the BCF object in the Equipment View window and carry out a BCF Object Reset, or, if locked from the BSC/NMS, request an unlock from the BSC/NMS (the BCF reset is automatic in this case).
  • Page 33: Replacing The Master Trx In Bts Configurations With Two Or More Trxs

    Replacing the master TRX Connect your Nokia BTS Manager PC to the LMP connector on the interface unit. Block the site locally (BCF Block) using Nokia BTS Manager if the site is not already locked from the BSC/NMS. Open the cable entry block.
  • Page 34: Replacing The Master Trx In A Single Trx Bts

    Connect your Nokia BTS Manager PC to the LMP connector on the interface unit. Block the BCF locally with Nokia BTS Manager, or request a BCF lock from the BSC/NMS. If the manager connection can still be established, open Traffic Manager from the Transmission menu and export the TS allocation information to your PC’s hard disk.
  • Page 35: Replacing The Transmission Unit

    When the metal bridge connecting the TX and RX connector is removed, the grounding becomes capacitive. Replacing the transmission unit Connect your Nokia BTS Manager PC to the LMP connector on the interface unit. Verify the type of transmission unit.
  • Page 36 Maintenance Block the BCF locally from Nokia BTS Manager or request a BCF lock from the BSC. Switch the BTS power supply unit to the stand-by position. Disconnect the transmission unit cabling. Note If the cables have not been labelled, make a note of which cable is TX and which cable is RX before disconnecting them.
  • Page 37 Exporting cross-connection information to a file before replacing an FXC E1 or FXC E1/T1 unit Select TRANSMISSION | OPEN from the main menu in Nokia BTS Manager. BTS Manager closes and the E1/T1 Manager (Transmission Unit Manager) application starts and connects to the transmission unit.
  • Page 38: Replacing The Interface Unit

    Connect your Nokia BTS Manager PC to the LMP connector on the interface unit. Block the BCF locally with the Nokia BTS Manager or request a BCF lock from the BSC. Switch the BTS power supply unit to the stand-by position.
  • Page 39: Replacing The Power Supply Unit

    Fit the sealing piece into the power supply connector shield, close the shield, and tighten the retaining screws. Turn the site mains power ON from the main circuit breaker. Turn the BTS power supply unit ON. Draft DN9913495 © Nokia Corporation 39 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 40: Replacing The Cooling Fan

    The procedures for doing this are given here. Alternatively, the complete fan assembly can be removed and replaced. The procedures for doing this are given in the document Nokia MetroSite EDGE Base Station: Field Upgrade. Note For Nokia MetroSite BTSs with 1W TRXs, refer to Nokia MetroSite EDGE Base Station: Field Upgrade.
  • Page 41: Figure 10. Displacing The Sealing Strip And Releasing The Cables

    Disengage the cables from the cable entry block. Sealing strip Allen screws Allen key 4 mm Figure 10. Displacing the sealing strip and releasing the cables Draft DN9913495 © Nokia Corporation 41 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 42: Figure 11. Hvmf Cooling Fan Assembly And Mounting Screws

    Remove the fan unit, the fan controller module, and the lower fan guard. To replace the fan, reverse the procedure. Figure 11. HVMF cooling fan assembly and mounting screws Draft 42 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 43: Figure 12. Hvmf Fan Assembly, Version 1

    Replacing units Figure 12. HVMF fan assembly, version 1 Draft DN9913495 © Nokia Corporation 43 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 44: Replacing The Hvmf Cooling Fan, Version 2

    See Figure 13. Remove the fan controller module from the backplane and then remove the fan and lower fan guard. To replace the fan, reverse the procedure. Draft 44 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 45: Figure 13. Hvmf Fan Assembly, Version 2

    Fan unit (HVMF) Fan assembly mounting Fan controller module Tapper screws, 3x10, 2 pieces Torx screws, M4x60, 3 pieces Figure 13. HVMF fan assembly, version 2 Draft DN9913495 © Nokia Corporation 45 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 46 Maintenance Draft 46 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 47: Led Indicator Conditions

    Lit continuously Flashing Green In service In service Traffic going through No traffic going through Yellow/Orange No LapD Configuring, not in service Unit broken Unit operation degraded Draft DN9913495 © Nokia Corporation 47 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 48: Transmission Unit Led

    No light No power feed or TX signal Interface unit LED The conditions for the interface unit’s LED indicators are specified in Table 6. Draft 48 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 49: Power Supply Unit Led

    Input voltage OK, switch the power supply unit to the stand-by position Fan unit LED The conditions for the fan unit’s LED indicators are specified in Table 8. Draft DN9913495 © Nokia Corporation 49 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 50: Table 8. Led Conditions For The Fan Unit

    Maintenance Table 8. LED conditions for the fan unit LED colour Conditions Green Unit operating Yellow Operation degraded Unit broken Draft 50 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...
  • Page 51: Index

    (TRX) replacing LED indicator conditions replacing master TRX LEDs replacing slave TRX fan unit transmission unit interface unit power supply unit replacing transceiver unit troubleshooting Draft DN9913495 ©Nokia Corporation 51 (52) Issue 3-0 en Nokia Proprietary and Confidential...
  • Page 52 Maintenance TRX slots TRX test units, replacing Draft 52 (52) © Nokia Corporation DN9913495 Nokia Proprietary and Confidential Issue 3-0 en...

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