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GSM 800 Transciever
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Table Of Contents
Maintenance
1 About this document
2 Preparations for maintenance
2.1 Site folder
2.1.1 Fault reporting
2.2 Maintenance equipment
2.2.1 Nokia BTS Manager
2.3 Environmental precautions
2.4 Power supply precautions
2.5 Removing the BTS cover
3 Periodic maintenance
3.1 Maintaining the cabinet
3.1.1 Fan unit and air circulation
3.1.2 Cover
3.1.3 Seals
3.1.4 Lock
3.2 Periodic testing of the BTS
4 Adjusting the 13 MHz clock
5 Troubleshooting
5.1 Testing the BTS
5.2 Troubleshooting checklist
6 Replacing units
6.1 ESD protection
6.2 Removing units
6.3 Recycling of units
6.4 Replacing TRXs
6.4.1 TRX slot identification
6.4.2 Replacing a slave TRX
6.4.3 Replacing the master TRX in BTS configurations with two or more TRXs
6.4.4 Replacing the master TRX in a single TRX BTS
6.5 Replacing the transmission unit
6.6 Replacing the interface unit
6.7 Replacing the power supply unit
6.8 Replacing the cooling fan
6.8.1 Replacing the HVMF cooling fan, version 1
6.8.2 Replacing the HVMF cooling fan, version 2
7 LED indicator conditions
7.1 Transceiver unit LED
7.2 Transmission unit LED
7.3 Interface unit LED
7.4 Power supply unit LED
7.5 Fan unit LED
Replacing units
DN9913495
© Nokia Cor
poration
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Nokia Proprietary and Confidential
Figure 12.
HVMF fan assembly, version 1
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