Product Info

DN00187365 © Nokia Corporation Draft 5 (50)
Issue 2-0 en Nokia Proprietary and Confidential
Contents
Contents 5
List of tables 7
List of figures 8
1 Overview of field upgrade 9
1.1 GSM to GSM/EDGE upgrade 9
1.1.1 Working order for GSM/EDGE upgrade 9
1.1.2 Working order for 1W TRX power upgrade 10
1.2 Capacity upgrade by BTS chaining 11
1.2.1 Working order for a MetroSite EDGE BTS chaining upgrade 11
2 Preparing for upgrade 13
2.1 Power supply precautions 13
2.2 Checking warnings and cautions 14
2.3 Checking the upgrade deliveries 15
2.3.1 Parts required for a GSM/EDGE upgrade 15
2.3.2 Parts required for a BTS chaining upgrade 15
2.4 Checking the site for an upgrade 16
2.4.1 Checking environmental conditions on the site 16
2.5 Checking the installation equipment 17
2.6 Removing the BTS cover 17
2.7 ESD protection 18
3 Replacing the power supply unit 21
3.1 PSU removal 21
3.2 PSU installation 23
4 Replacing the cooling fan 25
4.1 Removing the VMFA cooling fan 25
4.2 Installing the HVMF high capacity cooling fan 28
5 Replacing or installing new TRX units 31
5.1 Upgrading by replacing TRXs 32
5.1.1 Removing TRX units 32
5.1.2 Installing TRX units 34
5.2 Upgrading capacity by adding TRXs 35
6 Chaining Nokia MetroSite EDGE BTSs 37
6.1 Setting up a chaining connection 39
7 Commissioning for upgrade 41
7.1 Commissioning the BTS for GSM/EDGE 42
7.2 Commissioning the BTS chain 42
8 Completing the upgrade 45