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8/9/2019 Nokia MetroSite Base Station User Manual - Field Upgrade
The information in this document is subject to change without notice and describes only theproduct defined in the introduction of this documentation. This document is intended for theuse of Nokia Networks' customers only for the purposes of the agreement under which thedocument is submitted, and no part of it may be reproduced or transmitted in any form ormeans without the prior written permission of Nokia Networks. The document has beenprepared to be used by professional and properly trained personnel, and the customerassumes full responsibility when using it. Nokia Networks welcomes customer comments aspart of the process of continuous development and improvement of the documentation.
The information or statements given in this document concerning the suitability, capacity, orperformance of the mentioned hardware or software products cannot be considered bindingbut shall be defined in the agreement made between Nokia Networks and the customer.However, Nokia Networks has made all reasonable efforts to ensure that the instructionscontained in the document are adequate and free of material errors and omissions. NokiaNetworks will, if necessary, explain issues which may not be covered by the document.
Nokia Networks' liability for any errors in the document is limited to the documentary correctionof errors. Nokia Networks WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS INTHIS DOCUMENT OR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL(INCLUDING MONETARY LOSSES), that might arise from the use of this document or theinformation in it.
This document and the product it describes are considered protected by copyright according tothe applicable laws.
NOKIA logo is a registered trademark of Nokia Corporation.
Other product names mentioned in this document may be trademarks of their respectivecompanies, and they are mentioned for identification purposes only.
This document provides instructions for upgrading an existing MetroSite GSMBTS installation from a 1W TRX to a 5W TRX configuration.
Refer also to Nokia MetroSite GSM Base Station: Warnings and Cautions, Nokia MetroSite GSM Base Station: Commissioning, and Nokia MetroSite GSM BaseStation: Installation.
1.1 Warnings and cautions
The warnings and cautions applicable to the MetroSite GSM BTS are detailed inWarnings and Cautions [1]. Please read them carefully and implement wherenecessary.
1.2 Recycling of unitsIn case you need to dispose of the units or the whole BTS, contact NokiaProfessional Services for information on recycling. An environmental datapackage, including disassembly instructions and a material balance document isalso available via Nokia Professional Services.
8/9/2019 Nokia MetroSite Base Station User Manual - Field Upgrade
In case of precipitation (rain, snow, or sleet), the site must be weather-guardedduring the upgrading procedure.
Some units in the MetroSite GSM BTS contain electrostatic sensitive devices.The BTS is labelled with an electrostatic sensitive device (ESD) symbol as shownin Figure 1.
Always use an anti-static wrist strap connected to the cabinet ESD stud, wheneverhandling electrostatic sensitive units. The wrist strap and connection stud isshown in Figure 2.
Figure 1. Electrostatic Sensitive Device symbol
8/9/2019 Nokia MetroSite Base Station User Manual - Field Upgrade
When the BTS is fitted with more than one TRX, then the transmission data canbe downloaded from the master TRX to one of the new 5W TRX. If this is thecase, proceed to the downloading procedure in Chapter 4.
When removing the units, it is recommended that you remove theunits and assemblies in the following order:
1. BTS cabinet cover.
2. Cable cover and cable cover support.
3. PSU.
ESD stud
to ESD studWrist strap
8/9/2019 Nokia MetroSite Base Station User Manual - Field Upgrade
3. Slide the TRX unit so as to disengage it from the backplane connector andremove the unit by pulling on the handle at the front panel (see Figure 6).
3.1.4 Cooling fan assembly
Cooling fan assembly removal procedure:
1. Remove and retain the fan assembly holding screws (refer to :
a. Three T10 Torx screws on the R/H side of the assembly.
b. One T25 Torx screw on the front of the assembly.
2. Remove the cooling fan assembly:
a. Disengage the assembly from the backplane connector and twoguides by sliding it to the right.
b. Lower the assembly,thread all the connectingcables through the fanouter sealing gasket, and remove the assembly.
3. Remove and retain the fan outer sealing gasket.
4. Remove and retainthethree T10 Torxcablesentry blockinternalmountingscrews.
You may have to remove the fan in order to reach the cables entry block mountingscrews. If this is the case, then:
a. Remove the T10 Torx fan holding screw.
b. Slide the fan sideways until the guides of the fan reach the guideslots (see (A) in Figure 8).
c. Remove the fan.
5. Remove and retain the cables entry block.
8/9/2019 Nokia MetroSite Base Station User Manual - Field Upgrade
Before fitting the fan assembly, the cable entry block, the fan assembly mountingscrews, and the outer fan sealing gasket must be refitted from the old unit.
8/9/2019 Nokia MetroSite Base Station User Manual - Field Upgrade
1. Refit the previously removed cables entry block by means of the three T10Torx mounting screws previously removed (see 3.1.2).
It may be necessary to remove the high capacity fan from the assembly in orderto reach the cables entry block mounting screws, if that is the case, refer to Figure11.
2. Refit the previously removed outer fan sealing gasket (see 3.1.2).
3. Refit the previously removed four Torx fan assembly mounting screws inthe respective slots (see 9:
a. 3 x T10 on the R/H side of the assembly.
b. One T25 at the front of the assembly.
4. Align the guides and backplane connector at the side of the fan assemblywith the guide slots on the backplane.
5. Slide the unit home into the backplane connector.
6. Refit all connecting cables:
a. Drop the outer fan sealing gasket.
b. Open the cablesentry block and rethreadall cables throughthe outerfan sealing gasket
c. Reconnect all cables.
d. Place the cables into their respective slot of the cables entry block (see. Figure 10).
7. Refit and tighten the two 4mm (0.157in) Allen screws on the cables entryblock (see Figure 4).
8. Refit the outer fan sealing gasket.
8/9/2019 Nokia MetroSite Base Station User Manual - Field Upgrade