212260000 e 03

8/13/2019 212260000 e 03

http://slidepdf.com/reader/full/212260000-e-03 1/140

Alcatel-Lucent GSM

BTS Corrective MaintenanceHandbook

BTS Document

Procedural Handbook

Release B10

3BK 21226 AAAA PCZZA Ed.03

8/13/2019 212260000 e 03


8/13/2019 212260000 e 03


8/13/2019 212260000 e 03


Contents

3.10 Replace HEAT, HEXU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 793.10.1 Replace HEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 803.10.2 Replace HEXU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

3.11 Replace DCDB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 823.12 Replace Dummy Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 843.13 Replace FCPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 853.14 Replace G2 BTS Frame Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 873.15 Replace HEX1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

3.15.1 Replace HEF1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 893.15.2 Replace HEC1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

3.16 Replace LPSG Surge Arrestor Capsule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 913.17 Replace MBPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 923.18 Replace Over Voltage Protection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 943.19 Replace/Test PM06 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

3.19.1 Replace PM06 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 983.19.2 Test PM06 Switching Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 993.19.3 Test PM06 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1013.19.4 Test PM06 Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

3.19.5 Test PM06 Failure Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1033.20 Replace G2 BTS Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1063.21 Replace/Test G2 BTS Residual Current Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

3.21.1 Replace G2 BTS Residual Current Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1083.21.2 Test G2 BTS Residual Current Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

3.22 Replace G2 BTS RFE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1113.23 Replace RTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

3.23.1 Replace CREG and CRBG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1143.23.2 Replace other RTC RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

3.24 Replace RTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1203.25 Replace SACE, SCFE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1223.26 Replace/Test G2 BTS Smoke Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

3.26.1 Replace G2 BTS Smoke Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1243.26.2 Test G2 BTS Smoke Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

3.27 Replace STSE, STSP, STSR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1253.28 Replace/Test TMA/RMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

3.28.1 Replace TMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1283.28.2 Replace RMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1293.28.3 Adjust RMC Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

3.29 Replace G2 BTS Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1323.30 Replace/Test G2 BTS Water Detection Float Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

3.30.1 Replace G2 BTS Water Detection Float Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 1343.30.2 Test G2 BTS Water Detection Float Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

3.31 Replace WBC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1354 BTS OMU Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

4.1 Before You Start to Reload the OMU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1384.2 Use the OMU Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1394.3 Use a BTS, BSC or OMC-R Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

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Figures

FiguresFigure 1: CBE1 External View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 2: MCI2 Front External View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Figure 3: MCO2 Front and Top External Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 4: MCO4 Front and Top External Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 5: OBC3 Front and Top External Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Figure 6: MCO2 and MCO4 Front Internal Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Figure 7: OBC3 Front and Left Side Internal Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Figure 8: BU60 Connections and Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Figure 9: HEXU Front and Side Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Figure 10: COB1 Front and Top Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Figure 11: AC/DC Power Supply and Battery Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Figure 12: Jumper Settings at Clamp X6 in PSI1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Figure 13: PM06 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Figure 14: COB1 Front and Top Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Figure 15: RMCG Early Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Figure 16: RMCG Later Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

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Tables

TablesTable 1: Combiner Equipment RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 2: Cooling Fan RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 3: EACB and EAIB RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 4: FQHU RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 5: G1 BTS Frame Unit RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 6: MCLU and MCLR RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 7: MFG RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 8: OMUA RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 9: Power Supply RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Table 10: G1 BTS Receiver RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Table 11: G1 BTS RFE RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 12: RTDE/RTSE Pilot Tone Level at Different Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Table 13: RTMA and G1 BTS RFE RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Table 14: RTDE/RTSE Pilot Tone Level at Different Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 15: G1 BTS Transmitter RITs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 16: ADPS RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Table 17: ADPS RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Table 18: BHPS RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Table 19: BU60 Battery Block and Total Voltage at Different Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Table 20: BU60 Battery Block Discharge Voltage at Different Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Table 21: CFU RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75Table 22: HEAT/HEXU RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Table 23: Dummy Panel RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Table 24: G2 BTS Frame Unit RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Table 25: MBPS RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Table 26: COB1 RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Table 27: Threshold Specifications for PM06 Status LEDs - Increasing Voltage . . . . . . . . . . . . . . . . . . . . . . . . 99

Table 28: Threshold Specifications for PM06 Deep Discharge Alarms - Increasing Voltage . . . . . . . . . . . . . 99

Table 29: Threshold Specifications for PM06 Status LEDs - Decreasing Voltage . . . . . . . . . . . . . . . . . . . . . . 100

Table 30: Threshold Specifications for PM06 Deep Discharge Alarms - Decreasing Voltage . . . . . . . . . . . 100

Table 31: Operational Specifications for PM06 Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Table 32: Operational Specifications for PM06 Status Signal Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Table 33: BU60 Uncontrolled Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Table 34: BU60 Controlled Output Voltage at Different Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Table 35: PM06 Mains Failure Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Table 36: PM06 Failure Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Table 37: Two-PM06 Failure Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Table 38: Three-PM06 Failure Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Table 39: G2 BTS Receiver RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

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Tables

Table 40: COB1 RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Table 41: G2 BTS RFE RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Table 42: RTC RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Table 43: RTE RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Table 44: Alarm Collection and Control Function Entity RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . 122Table 45: Timing and Switching Entity RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Table 46: TMA and RMC RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Table 47: RMCG Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Table 48: RMCG Pilot Tone Level at Different Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Table 49: G2 BTS Transmitter RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Table 50: WBC RIT Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

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Tables

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Preface

Assumed Knowledge You must have a basic understanding of the following:

Alcatel-Lucent operations and maintenance concepts for the BSS

MO (SBL) hierarchies of the BTS

BSS hardware configurations

BTS and OMC-R terminals

MS-DOS

Telecommunications engineering

Anti-static procedures

RF test and measurement equipment

Signal analyzers as used on GSM networks

Electronic test equipment.

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1 Safety Rules and Precautions


This chapter contains the following safety rules and precautions.

Injury from EquipmentPossible death or serious physical harm to personnel and damage to equipmentmay result from mishandling.While performing any maintenance tasks or procedures, you must follow anylocal safety requirements, and those mentioned in General Safety Instructionsfor Field Operations and this chapter.

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1.2.3 Transportation and Storage

The following transportation and storage precautions must be followed:

Pack all containers used to transport and store static-sensitive components,and use aluminium container tubes if possible. If not, insert the component

terminations into electrically conductive foam

Before shipping a PBA, wrap it in a conducting synthetic bag or in aluminiumfoil. Also pack the PBA in a polyethylene transport box

Before shipping a PBA which has MOS components, ensure that anappropriate warning symbol is displayed on the package

Store spare PBAs in their appropriate polyethylene boxes. Keep the boxesclosed except when access to their contents is required

Do not store PBAs in an area where the air is polluted with smoke, dust,dangerous gases or other airborne particles that may cause damage

Do not stack PBAs side-by-side or on top of each other with the boardsurfaces or components in contact with one another

Before cleaning a PBA, remove or disconnect the damage protection, suchas protective foam, to allow the PBA to be cleaned thoroughly. Replace thedamage protection upon completion of the task.

1.2.4 Components and PBAs

The following precautions must be followed when working with componentsand PBAs:

Components and PBAs not in protective containers must only be handled bytrained personnel in static-controlled work areas

Before removing a PBA from an equipment rack, discharge any static bytouching the metal frame of the rack with your hand

Always handle a PBA by the edges

Do not handle or carry a PBA by any of the mounted components

Do not handle a PBA by the gold-plated contact terminals and do not applydirect pressure to the components

Do not touch PBA connection pins or conductor paths

Do not touch PBAs with wet hands

Place PBAs that have been removed during maintenance with the solderedside downwards on a conductive surface

Do not scratch or rub the soldered side of a PBA with a sharp or rough object

Do not repair PBAs in the switch room

Do not handle components and assemblies by their leads

Do not use excessive force when inserting connection boards.

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2 G1 BTS RITs

This chapter tells you how to open doors and how to adjust, remove andreplace RITs in the G1 BTS.

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2.1 Open Doors of G1 Station and Extension CabinetsThis procedure is valid for Mark 2 cabinets:

SCER

ECER.

To open and close the front and rear doors of G1 Station or Extension cabinets:

1. Insert the key in the door lock and turn it clockwise to unlock the door. Thenturn the doorknob clockwise and pull open the door.

2. When you have finished working on the equipment, close the cabinet doorand then turn the doorknob anti-clockwise. Turn the key anti-clockwisein the door lock to lock the door.

2.2 Adjust MFGERead this section before starting the adjustment procedures.

Prerequisites Note the following conditions. You must:

Have read Safety Rules and Precautions (Section 1) before performing anymaintenance procedures

Be familiar with electrostatic precautions. Refer to Electrostatic Precautions ( Section 1.2) for more information

Ensure that the MFGE has had power continuously supplied for theprevious 24 hours

Ensure that the frequency counter has had the warm-up period specified by

the manufacturer

Ensure that the second CLLK is in a serviceable condition

Ensure that the ambient temperature remains constant during theadjustment procedure.

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Tools and Materials You must have:

A frequency counter with a resolution of 0.01 Hz at 26 MHz

An anti-static wrist strap

A small, flathead, non-conductive (ceramic) screwdriver suitable for tuning

A medium crosshead screwdriver

An extender board or cable for RITs with bottom adjustment aperture

One of the following:

A BTS terminal connected via an RS-232 asynchronous communicationlink cable to the MMI port on the OMUA. Refer to the BTS Terminal User Guide for more information

A BSC terminal connected to the BSC via an RS-232 asynchronousor an X.25 synchronous communication link cable. Refer to the BSC Terminal User Guide for more information

Access to an operator at the OMC-R.

An RF coaxial cable fitted with two male BNC connectors.

Impact on System None.

Loss of CallsFailure to comply with the prerequisites can result in the BTS being locked(disabled) and all calls being lost.

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2.2.1 Adjust MFGE Located in a BTS

This procedure must be performed after replacing faulty hardware, or atintervals of six months.

The procedure is valid for the following MFGE RITs used in a G1 BTS:

MFGE 11 002 00

MFGE 11 102 00

MFGE 11 W02 00

Procedure To adjust the output frequency of an MFGE located in a BTS:

1. Open the front door of the BTS. (Refer to Open Doors of G 1 Station and Extension Cabinets (Section 2.1) for more information).

2. Using the OMC-R, a BSC terminal, or a BTS terminal, disable theappropriate CLLK SBL. The other CLLK SBL remains active.

3. Connect the anti-static wrist strap.4. Connect the frequency counter to the MFGE output test point.

5. Wait until triggering occurs on the input signal port of the frequency counter,and the display provides at least nine digits of resolution. Then proceedas follows:

If the indicated frequency is between 12 999 999.35 Hz and 13 000000.65 Hz (that is, 13 MHz +/-0.65 Hz), continue with Step 8

If not, adjustment is necessary. Continue with Step 6 .

6. Use a tuning tool to adjust the MFGE output frequency to the nominal value

of 13 MHz. Move the potentiometer up and down a few times to removeany oxide. Adjust the potentiometer clockwise to increase the frequency,or anti-clockwise to decrease it.

7. Tap the casing of the MFGE with the handle of a screwdriver to relieve anymechanical stress in the potentiometer.

8. Disconnect the frequency counter from the MFGE output test point, and thendisconnect the anti-static wrist strap.

9. Using the OMC-R, a BSC terminal, or a BTS terminal, unlock (initialize)the appropriate CLLK SBL.

10. Repeat the entire procedure for each MFGE.

11. Close the front door of the BTS.12. After a period of 24 hours, recheck the MFGE output frequencies and

re-adjust if necessary.

2.2.2 Adjust MFGE Removed from a BTS

This procedure must be performed after replacing faulty hardware, or atintervals of six months.

The procedure is valid for the following MFGE RITs used in a G1 BTS:

MFGE 11 001 00

MFGE 11 W01 00

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Remove MFGE To adjust the output frequency of an MFGE removed from a BTS:


2. Using the OMC-R, a BSC terminal, or a BTS terminal, disable theappropriate CLLK SBL. The other CLLK SBL remains active.

3. Remove the locked (disabled) MFGE retaining screws.

4. Connect the anti-static wrist strap.

5. Carefully disengage the MFGE from the backplane and fully withdraw itfrom the slot.

6. Insert the MFGE on an extender board or cable.

Adjust OutputFrequency

1. Wait at least 15 minutes for the output to stabilize and the oven alarmto disappear.

2. Connect the frequency counter to the MFGE output test point.

3. Wait until triggering occurs on the input signal port of the frequency counterand the display provides at least nine digits of resolution. Then proceedas follows:

If the indicated frequency is between 12 999 999.35 Hz and 13 000000.65 Hz (that is, 13MHz +/-0.65 Hz), continue with Step 6


4. Use a tuning screwdriver to adjust the MFGE output frequency to thenominal value of 13 MHz. Move the potentiometer up and down a few timesto remove any oxide. Adjust the potentiometer clockwise to increase thefrequency, or anti-clockwise to decrease it.

5. Tap the casing of the MFGE with the handle of a screwdriver to relieve anymechanical stress in the potentiometer.

6. Disconnect the frequency counter from the MFGE output test point.

7. Remove the MFGE from the extender board or cable.

Backplane DamageDo not use excessive force when inserting the MFGE.

Reinsert MFGE 1. Push the MFGE fully back into the slot in the rack ensuring that pins andsockets are correctly aligned.

2. Disconnect the anti-static wrist strap.3. Replace and tighten the retaining screws.

4. Wait a maximum of 15 minutes for the oven alarm to deactivate. If at thispoint the alarm is still present, you need to replace the unit. Refer to G1BTS RITs (Section 2) for more information.

5. Using the OMC-R, a BSC terminal, or a BTS terminal, unlock (initialize)the appropriate CLLK SBL.

6. Repeat the entire procedure for each MFGE.

7. Close the front door of the BTS.

8. After a period of 24 hours, recheck the MFGE output frequencies andre-adjust if necessary.

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2.3 Before You Start to Replace a G1 BTS RITRead this section before starting the replacement procedures.

Prerequisites Note the following conditions. You must:



Know how to use the BTS terminal software for commissioning and testing aBTS

Know how to use RF test and measurement equipment, for example the HP8593A Spectrum Analyzer

Establish an efficient means of communication with an OMC-R operator in

order to lock (disable) and unlock (initialize) the BTS when required.Tools and Materials You must have:


The hand tools specified in the relevant sections

A serviceable replacement RIT with an identical part number.

Impact on System This depends on the nature of the RIT and its position inthe system. Refer to the specific replacement procedures.

Restrictions None.

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2.4 Replace Combiner EquipmentThe following table shows combiner equipment RITs.

RIT Description BTS Type

CBC2 11 Celwave Basic Combiner for Two Carriers Mark 2

CBC4 11 Celwave Basic Combiner for Four Carriers Mark 2

CEC2 11 Celwave Extension Combiner for Two Carriers Mark 2

CEC4 11 Celwave Extension Combiner for Four Carriers Mark 2

FBC2 11 Forem Basic Combiner for Two Carriers Mark 2

FCAV 11 Forem Supplementary Combiner for Two Carriers (less than60 W)

Mark 2

FCAV 21 Forem Supplementary Combiner for Two Carriers (120 W) Mark 2

FEC2 11 Forem Extension Combiner for Two Carriers Mark 2

Table 1: Combiner Equipment RITs



A medium flathead screwdriver

A torque wrench with 8 mm, 20 mm and 27 mm adaptors

An 8 mm Allen key with a shaft length greater than 60 mm

A BTS terminal. If a BTS terminal is unavailable, you must establish anefficient means of communication with an OMC-R operator.

When required, the operator must:

Lock (disable) and unlock (initialize) the associated MOs (SBLs)

Check that there are no outstanding alarms on the BTS

Check that all MOs (SBLs) are in traffic.

An RS-232 asynchronous communication link cable to connect the BTSterminal to the MMI port. The MMI port is located on the OMUA in the BTSrack. Refer to the BTS Terminal User Guide for more information.

Impact on System All telecommunications resources are lost when BTS_TELand RA are locked (disabled).

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Remove CombinerEquipment

To remove combiner equipment:


2. Connect the BTS terminal to the MMI port on the OMUA.

3. Using the BTS terminal, disable BTS_TEL. Enter a WTC = 3 minutesto ensure an orderly shutdown of the BTS. Wait three minutes beforecontinuing to the next step.

4. Using the BTS terminal, disable RA.


6. Disconnect all coaxial RF connectors on the front panel of the combinerequipment to be replaced, carefully noting their positions for reconnection.

7. Pull the rack forward out of the cabinet to allow rear access.

8. Disconnect the connectors at rear of the combiner equipment. Access canbe made via the left hand side of the rack.

9. Remove the four retaining screws, and then remove the combiner equipmentfrom the rack.

Replace CombinerEquipment

To replace combiner equipment:

1. Insert the replacement combiner equipment in the rack, and then replaceand tighten the retaining screws.

2. Reconnect the connectors removed in Step 8 above to the rear of thecombiner equipment.

3. Push the rack back into the cabinet.

4. Reconnect the connectors removed in Step 6 above.

5. Disconnect the anti-static wrist strap.

6. Using the BTS terminal, initialize RA and then BTS_TEL.

7. Using the BTS terminal, check that there are no outstanding alarms on theBTS, and that all SBLs are in traffic.

8. Disconnect the BTS terminal.


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2.5 Replace Cooling FanThe following table shows cooling fan RITs.


CFSR 11 Cooling Fan Subrack Mark 2

CFSU 11 Cooling Fan Subunit Mark 2

TCFB 11 Top Cooling Fan Board Mark 2

TCFU 11 Top Cooling Fan Unit Mark 2

Table 2: Cooling Fan RITs










Impact on System There is no loss of telecommunications resources. Thecooling fan can be replaced without switching off the BTS power.

Operating Without CoolingEnsure that the replacement task is undertaken as a single uninterruptedactivity. Do not allow the rack to operate without cooling for longer than 15minutes.

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Remove Fan To remove a cooling fan:



3. Using the BTS terminal, disable the CCFn SBL, where n = the SBL numberbetween 1 and 23. If n is unknown, use the Display Hardware Configurationscreen of the BTS terminal to find it.


5. Remove the fan from the rack according to the RIT type:

For a CFTxx or CFSU:

Remove the four retaining screws on the front of the fan

Disconnect the earth connectors at rear of the fan. Access can bemade via the rear of the BTS rack. Carefully note connector positionsfor reconnection

Carefully withdraw the fan from the rack.

For a CFSR:

Switch OFF the fan using the ON/OFF switch located on the frontpanel

Partially withdraw the fan by removing the four retaining screwson the front panel

Disconnect the four connectors and earth connection at the rear ofthe fan

Remove the fan from the rack.

For a TCFU or TCFB:

Switch OFF the TCFU using the ON/OFF switch located on the TCFB

Remove the TCFU cover by removing the two retaining screws anddisconnecting the earth connection

Lift the TCFU to disconnect the power connector on the underside

Remove TCFU from the cabinet

Remove the TCFB from the TCFU.

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Replace Fan To replace a cooling fan:

1. Install the replacement fan into the rack:

For a CFTxx or CFSU:

Carefully insert the fan in the rack

Replace and tighten the four retaining screws on the front of the fanReconnect the earth connectors removed in Step 5 above to therear of the fan.

For a CFSR:

Partially install the fan in the rack. Then connect the four connectorsand earth connection removed in Step 5 above to the rear of the fan

Push the fan fully into the rack

Replace and tighten the four retaining screws on the front panel

Switch ON the fan using the ON/OFF switch located on the front panel.

For a TCFU or TCFB:

Install the TCFB on the TCFU

Install the TCFU in the cabinet and connect the power connectoron the underside

Replace the TCFU cover and connect the earth connection

Replace and tighten the two retaining screws on the cover

Switch ON the TCFU using the ON/OFF switch located on the TCFB.

2. Disconnect the anti-static wrist strap.3. Using the BTS terminal, initialize the CCFn SBL.

4. Check there are no outstanding alarms on the BTS, and that all SBLsare in traffic.



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Replace RIT To replace an EACB or EAIB RIT:

1. Push the replacement RIT fully into the empty slot ensuring that pins andsockets are correctly aligned.

2. Replace and tighten the RIT retaining screws.

3. Reconnect the RIT front panel connectors.


5. Using the BTS terminal, initialize the RIT SBL.




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2.7 Replace FQHUThe following table shows FQHU RITs.


FQHU 11 Frequency Hopping Unit Mark 2

FQHU 12 Frequency Hopping Unit Mark 2

FQHU 22 Frequency Hopping Unit (non-COCOM) Mark 2

Table 4: FQHU RITs


A small crosshead screwdriver








Remove FQHU To remove an FQHU RIT:



3. Using the BTS terminal, disable the associated FHU SBL.

4. Remove the retaining screws.


6. Carefully disengage the FQHU from the backplane and fully withdraw itfrom the slot.

Backplane DamageDo not use excessive force when inserting the RIT.

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Replace FQHU To replace an FQHU RIT:

1. Push the replacement FQHU fully into the empty slot ensuring that pinsand sockets are correctly aligned.


3. Replace and tighten the retaining screws.

4. Using the BTS terminal, initialize the associated FHU SBL.




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2.8 Replace G1 BTS Frame UnitThe following table shows Frame Unit RITs.


CDEC 11 Channel Decoder Mark 2

CECC 12 Channel Encoder Encryption Mark 2

CECC 22 Channel Encoder Encryption (Non-COCOM) Mark 2

DMAD 11 Demodulator with Antenna Diversity Mark 2

DMOD 11 Demodulator without Antenna Diversity Mark 2

DMOD 21 Demodulator without Antenna Diversity (Non-COCOM) Mark 2

DRFE Dual Rate Frame Unit Extension Mark 2

DRFU Dual Rate Frame Unit Mark 2

FUCO 13 Frame Unit Controller Mark 2

FUIF 15 Frame Unit Interface Mark 2

FUIF 21 Frame Unit Interface (with Test Connector) Mark 2

Table 5: G1 BTS Frame Unit RITs









Impact on System Note the following impact on the system:

All telecommunications resources are lost if the last FU MO (SBL) is locked(disabled). Otherwise, eight time slots are lost

All telecommunications resources are lost if BTS_TEL is locked (disabled).

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Remove FU To remove an FU RIT:



3. If this is not the last FU that is able to carry the BCCH, go directly to Step 4 .If this is the last FU, use the BTS terminal to disable BTS_TEL. Enter aWTC = 3 minutes to ensure an orderly shutdown of the BTS. Wait threeminutes before continuing to the next step.

4. Using the BTS terminal, disable the associated FU SBL.

5. Remove the retaining screws of the faulty FU.


7. Carefully disengage the FU from the backplane and fully withdraw it fromthe slot.


Replace FU To replace an FU RIT:

1. Push the replacement FU fully into the empty slot ensuring that pins andsockets are correctly aligned.


3. Replace and tighten the FU retaining screws.

4. Using the BTS terminal, initialize the associated FU SBL and then BTS_TEL,if it was disabled.




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2.9 Replace MCLU, MCLRThe following table shows MCLU and MCLR RITs.


MCLU 11 Master Clock Unit Mark 2

MCLU 21 Master Clock Unit (Co-location with MFGP) Mark 2

MCLU 22 Master Clock Unit (Co-location with MFGP) Mark 2

MCLR 11 Master Clock Repeater Mark 2

Table 6: MCLU and MCLR RITs








An RS-232 asynchronous communication link cable to connect the BTS

terminal to the MMI port. The MMI port is located on the OMUA in the BTSrack. Refer to the BTS Terminal User Guide for more information.

Impact on System There is no impact on the system due to redundancy ofthe MCLU and the MCLR.

Remove MCLU or MCLR To remove an MCLU or MCLR RIT:



3. Using the BTS terminal, disable the associated CLLK SBL.

4. Remove the RIT retaining screws.


6. Carefully disengage the RIT from the backplane and fully withdraw it fromthe slot.


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2.10 Replace MFGThe following table shows MFG RITs.


MFGE 11 Master Frequency Generator Mark 2

MFGP 21 Master Frequency Generator PCM Mark 2

Table 7: MFG RITs



A BTS terminal. If a BTS terminal is unavailable, you must establish anefficient means of communication with an OMC-R operator. When required,the operator must:





Impact on System There is no impact on the system due to redundancy ofthe MFG.

Remove MFG To remove an MFG RIT:



3. Using the BTS terminal, disable the associated CLLK SBL.

4. Remove the MFG retaining screws.


6. Carefully disengage the MFG from the backplane and fully withdraw itfrom the slot.


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Replace MFG To replace an MFG RIT:

1. Push the replacement MFG fully into the empty slot ensuring that pinsand sockets are correctly aligned.


3. Replace and tighten the MFG retaining screws.

4. Wait a maximum of 15 minutes while the OCXO warms up for the ovenalarm to disappear.

5. Using the BTS terminal, initialize the associated CLLK SBL.



8. If the MFGE 11 was replaced, adjust the frequency.


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2.11 Replace OMUAThe following table shows OMUA RITs.


OMUA 13 Operations and Maintenance Unit A Mark 2

OMUA 14 Operations and Maintenance Unit A Mark 2

Table 8: OMUA RITs



An efficient means of communication with an OMC-R operator.

When required, the operator must:Lock (disable) and unlock (initialize) the associated MOs (SBLs)




There is no loss of telecommunications resources

All Operations and Maintenance functions are lost for a period ofapproximately 15 minutes.

Backplane DamageThe absence of a locating lug on the OMUA means that it can be inadvertentlyput in the wrong slot, causing irreversible damage. Specifically, this wouldhappen if it were put in an MCLU slot.Put the replacement OMUA only into the slot from where the faulty one wasremoved.

BTS MalfunctionRedundant OMUA operation with a standby OMUA is not supported, andwould cause problems if attempted.Do not install a second OMUA.

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Remove OMUA To remove an OMUA RIT:


2. Switch the ON/OFF switch on the SUPS1 board (to the left of the OMUAboard) to the OFF position.

3. Remove the OMUA retaining screws.


5. Carefully disengage the OMUA from the backplane and fully withdraw itfrom the slot.


Replace OMUA To replace an OMUA RIT:

1. Push the replacement OMUA fully into the empty slot ensuring that pinsand sockets are correctly aligned.


3. Replace and tighten the OMUA retaining screws.

4. Switch ON the SUPS1 board.

5. Check that the front panel LEDs on the OMUA are ON.

6. Press the Reset button on the OMUA to invoke an O&M software download.Allow 15 minutes for the download to finish. Refer to BTS OMU Software ( Section 4) for information on downloading OMU software.


Final Checks (at OMC-R) 1. Ask the OMC-R operator to check that O&M functions are available, and thatthe BTS is in traffic and fully operational. If not, continue to the next step.

2. Ask the OMC-R operator to unlock (initialize) the BTS_OM SBL in order todownload the BTS software.

3. Ask the OMC-R operator to watch for related alarms and messages,especially:

alarms: OMU, reset, event

state changes: BTS_OM, -> IT, BTS downloaded, autonomous.

Wait until messages have been displayed before proceeding to the nextstep. There is no need to wait for more than 30 minutes.

4. Ask the OMC-R operator to unlock (initialize) BTS_TEL.

5. Ask the OMC-R operator to check that there are no outstanding alarms onthe BTS, and that all MOs (SBLs) are in traffic.

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Remove Power Supply To remove a power supply RIT:



3. If an SUPS is not being replaced, go directly to Step 5 . If an SUPS isbeing replaced, use the BTS terminal to disable BTS_TEL. Enter a WTC =3 minutes to ensure an orderly shutdown of the BTS. Wait three minutesbefore continuing to the next step.

4. Using the BTS terminal, disable RA and then go to Step 6 .

5. Using the BTS terminal, disable the SBL associated with the power supply tobe replaced:

CPSU: disable the associated CU SBL

CUPS: disable the associated CU SBL

FUPS: disable the associated FU SBL

TCPS: disable the associated FU and CU SBLs.


7. Switch OFF the power supply at the front panel toggle switch.

8. Remove the power supply retaining screws.

9. Carefully disengage the power supply from the backplane and fully withdrawit from the slot.


Replace Power Supply To replace a power supply RIT:

1. Push the replacement power supply fully into the empty slot ensuring thatpins and sockets are correctly aligned.

2. Replace and tighten the power supply retaining screws.

3. Switch ON the power supply.


5. Press the Reset button on the OMUA to invoke an OMU software download.Allow 15 minutes for the download to finish. Refer to BTS OMU Software

( Section 4) for information on downloading OMU software.6. If an SUPS is not being replaced, use the BTS terminal to initialize the SBL

associated with the power supply. If an SUPS is being replaced, use theBTS terminal to initialize RA and then BTS_TEL.




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2.13 Replace G1 BTS ReceiverThe following table shows Receiver RITs.


RXAS 11 Receiver (Mark I2) Mark 2

RXUA 13 Receiver Unit Type A Mark 2

Table 10: G1 BTS Receiver RITs










All telecommunications resources are lost if the last CU SBL is locked(disabled). Otherwise, eight time slots are lost


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Remove Receiver To remove a Receiver RIT:



3. If this is not the last CU carrying the BCCH, go directly to Step 4 . If thisis the last CU, use the BTS terminal to disable BTS_TEL. Enter a WTC =3 minutes to ensure an orderly shutdown of the BTS. Wait three minutesbefore continuing to the next step.

4. Using the BTS terminal, disable the associated CU SBL.


6. Disconnect the front panel connectors from the Receiver.

7. Remove the Receiver retaining screws.

8. Carefully disengage the Receiver from the backplane and fully withdraw itfrom the slot.


Replace Receiver To replace a Receiver RIT:

1. Push the replacement Receiver fully into the empty slot ensuring that pinsand sockets are correctly aligned.

2. Replace and tighten the Receiver retaining screws.

3. Reconnect the front panel connectors.


5. Using the BTS terminal, initialize the associated CU SBL and then BTS_TEL,if it was disabled.




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2.14 Replace/Adjust G1 BTS RFEThe following table shows RFE RITs.


CRDE 11 Celwave Receiver Front-End with Antenna Diversity Mark 2

CRFE 11 Celwave Receiver Front-End without Antenna Diversity Mark 2

MCEX 21 Multicoupler Extension Mark 2

RTDE 21 Receiver Front-End with Antenna Diversity (applicable onlyif RTMA is fitted)

Mark 2

Table 11: G1 BTS RFE RITs

Tools and Materials You must have:A small crosshead screwdriver

A torque wrench with 8 mm and 20 mm adaptors







Impact on System All telecommunications resources are lost when BTS_TELand RA are locked (disabled).

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2.14.1 Replace G1 BTS RFE

To replace an RFE RIT:

Remove and replace the RFE

Adjust the Gain in the RTDE/RTSE.

Remove RFE To remove a RFE:



3. Using the BTS terminal, disable BTS_TEL. Enter a WTC = 3 minutesto ensure an orderly shutdown of the BTS. Wait three minutes beforecontinuing to the next step.



6. Disconnect the RF connectors on the front panel of the RFE, carefully notingtheir positions for reconnection.

7. Remove the RFE retaining screws.

8. Carefully disengage the RFE from the backplane, and partially withdraw it inorder to gain access to the rear panel connectors.

9. Disconnect the rear panel connectors.

10. Fully withdraw the RFE from the slot.

Backplane Damage

Do not use excessive force when inserting the RIT.

Replace RFE To replace a RFE:

1. Push the replacement RFE partially into the empty slot.

2. Reconnect the rear panel connectors.

3. Push the RFE fully into the slot ensuring that pins and sockets are correctlyaligned.

4. Replace and tighten the RFE retaining screws.

5. Reconnect the front panel RF connectors.

6. Check that the power ON LEDs are ON.7. Using the BTS terminal, initialize RA and then BTS_TEL.


9. Now go to Adjust the Gain in the RTDE/RTSE (Section 2.14.2) to adjust thegain of the RTDE/RTSE.

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2.14.2 Adjust the Gain in the RTDE/RTSE

To adjust the gain of an RTDE/RTSE:

1. Set up and calibrate the test equipment you intend to use (for example, theHP 8593A Spectrum Analyzer).

Using a Power MeterIf you use a power meter, you must have a suitable narrow band filter for700 +/-5 MHz.

2. Disconnect one of the SMA type connectors, using the torque wrench set(8 mm) adaptor. Attach the RF probes of the test equipment to one ofthe eight RF connectors on the RTDE/RTSE front panel, to measure the700 MHz pilot tone.

3. Using a small flathead screwdriver, adjust the Gain control on theRTDE/RTSE front panel to give a pilot tone level according to Table 12 .

For GSM systems, the temperatures of the RTDE/RTSE and the RTMAmust be taken into account when setting the tone level. Table 12 showsthe required tone level for different temperatures, taking into account solarheating of the RTMA. It is possible for the RTMA to reach 58 C for an airtemperature of 40 C if it is exposed to the sun long enough.

Temperature Pilot Tone Level

-10 C [le ] T RTDE/RTSE [le ] +30 C

-33 C [le ] T RTMA [le ] -10 C

-22.1 dBm


-10 C [le ] T RTMA [le ] +70 C

-21.0 dBm

T RTDE/RTSE [ge ] +30 C

-33 C [le ] T RTMA [le ] +50 C

-21.0 dBm


+50 C [le ] T RTMA [le ] +70 C

-21.2 dBm

Table 12: RTDE/RTSE Pilot Tone Level at Different Temperatures

4. Reconnect the SMA type connector and tighten the lock nut, using thetorque wrench with 8 mm adaptor set to 1 Nm.





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2.15 Replace RTEMThis procedure tells you how to replace an RTEM RIT.








An RS-232 asynchronous communication link cable to connect the BTSterminal to the MMI port. The MMI port is located on the OMUA in the BTS

rack. Refer to the BTS Terminal User Guide for more information.


Remove RTEM To remove an RTEM RIT:



3. Using the BTS terminal, disable the associated RTE SBL.


5. Disconnect the RTE front panel RF connectors.6. Remove the RTE retaining screws.

7. Carefully disengage the RTE from the backplane and fully withdraw itfrom the slot.


Replace RTEM To replace an RTEM RIT:

1. Push the replacement RTE fully into the empty slot ensuring that pins

and sockets are correctly aligned.2. Replace and tighten the RTE retaining screws.

3. Reconnect the RTE front panel RF connectors.


5. Using the BTS terminal, initialize the associated RTE SBL.




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2.16 Replace/Adjust RTMAThis procedure tells you how to replace an RTMA and then adjust thecorresponding RFE. The following table shows RTMA and RFE RITs.


RTMA 11 Receiver Tower Mounted Amplifier Mark 2

RTDE 21 Receiver Front-End with Antenna Diversity Mark 2

Table 13: RTMA and G1 BTS RFE RITs


A spectrum analyzer (HP 8593A) and a two-way splitter/combiner forGSM (or similar)


A small flathead screwdriver

An 8 mm Allen key

A torque wrench with 8 mm and 27 mm adaptors

Suitable weather-proof blanking caps for the RF connector cables andthe RTMA assembly








If the BTS is equipped with antenna diversity, there is no loss oftelecommunications resources. All telecommunications resources areautomatically diverted to the diversity antenna

If there is no antenna diversity, the BTS_TEL and RA MOs (SBLs) must belocked (disabled) and all telecommunications resources are lost.

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2.16.1 Replace RTMA

Remove RTMA To remove an RTMA RIT:



3. If there is antenna diversity, go directly to Step 5 . If there is no antennadiversity, use the BTS terminal to disable BTS_TEL. Enter a WTC = 3minutes to ensure an orderly shutdown of the BTS. Wait three minutesbefore continuing to the next step.



6. Disconnect the RF input and output connectors on the underside of theRTMA. Use the torque wrench with a 27 mm adaptor to loosen the RFconnector lock nuts.

7. Cover the RF connectors using the weatherproof blanking caps to preventmoisture or contamination.

8. Remove the four bolts that secure the RTMA to the tower.

9. Carefully withdraw the RTMA from the antenna tower, and place it ina polythene bag.

Replace RTMA To replace an RTMA RIT:

1. Place the replacement RTMA against the tower, and replace and tighten thefour bolts to secure the assembly to the tower.

2. Remove the weatherproof blanking caps from the RF connectors.

3. Reconnect the RF input and output connectors to the underside of theRTMA. Use the torque wrench set to 25 Nm, with a 27 mm adaptor totighten the RF connector lock nuts.

4. Using the BTS terminal, initialize RA and then BTS_TEL, if they weredisabled earlier.


6. Now, go to Adjust the Gain in the RTDE/RTSE (Section 2.16.2) to adjust thegain of the RTDE/RTSE.

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2.16.2 Adjust the Gain in the RTDE/RTSE

To adjust the gain of an RTDE/RTSE:


Using a Power MeterIf you use a power meter, you must have a suitable narrow band filter for700 +/-5 MHz.

2. Disconnect one of the SMA type connectors, using the torque wrench set(8 mm) adaptor. Attach the RF probes of the test equipment to one ofthe eight RF connectors on the RTDE/RTSE front panel, to measure the700 MHz pilot tone.

3. Using a small flathead screwdriver, adjust the Gain control on theRTDE/RTSE front panel to give a pilot tone level according to the followingtable.For GSM systems, the temperatures of the RTDE/RTSE and the RTMAmust be taken into account when setting the tone level. The following tableshows the required tone level for different temperatures, taking into accountsolar heating of the RTMA. It is possible for the RTMA to reach 58 C for anair temperature of 40 C if it is exposed to the sun long enough.



-33 C [le ] T RTMA [le ] -10 C

-22.1 dBm

-10 C [le ] T RTDE/RTSE [le ] +30 C-10 C [le ] T RTMA [le ] +70 C

-21.0 dBm


-33 C [le ] T RTMA [le ] +50 C

-21.0 dBm


+50 C [le ] T RTMA [le ] +70 C

-21.2 dBm

Table 14: RTDE/RTSE Pilot Tone Level at Different Temperatures

4. Reconnect the SMA type connector and tighten the lock nut, using thetorque wrench with 8 mm adaptor set to 1 Nm.





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2.17 Replace G1 BTS TransmitterThe following table shows Transmitter RITs.


TXAH 11 Transmitter Amplifier High Power Mark 2

TXAL 11 Transmitter Amplifier Low Power Mark 2

TXUA 13 Transmitter Unit Type A Mark 2

Table 15: G1 BTS Transmitter RITs



A BTS terminal. If a BTS terminal is unavailable, you must establish anefficient means of communication with an OMC-R operator. When required,the operator must:






All telecommunications resources are lost if the last CU MO (SBL) is locked(disabled). Otherwise, eight time slots are lost


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Remove Transmitter To remove a Transmitter RIT:






6. Disconnect the TX connector from the Transmitter.

7. Remove the Transmitter retaining screws.

8. Carefully disengage the Transmitter from the backplane and fully withdraw itfrom the slot.


Replace Transmitter To replace a Transmitter RIT:

1. Push the replacement Transmitter fully into the empty slot ensuring that pinsand sockets are correctly aligned.

2. Replace and tighten the Transmitter retaining screws.

3. Reconnect the TX connector.


5. Using the BTS terminal, initialize the associated CU SBL and then BTS_TEL,if it was disabled.




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3 G2 BTS RITs

This chapter tells you how to open doors, slide movable racks, remove andreplace side panels and how to adjust, remove and replace G2 BTS RITs ofindoor and outdoor cabinets.

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3.1 Handle Cabinets

3.1.1 Handle CBE1 and CBE2 Cabinets

This section contains procedures for opening and closing cabinet doors, sliding

movable racks, and removing and replacing side panels.3.1.1.1 Open and Close Doors

To open and close the CBE1 or CBE2 front door:

1. Insert the key in the door lock and turn it clockwise to unlock the door.Then turn the doorknob clockwise and pull open the door. The followingfigure shows the CBE1 external view. The CBE2 external view is similarto the CBE1.

op u e a

Roller

Bottom Guide Rail Movable Rack

Side Panel

Spring−Loaded Spigot

Three−Point Door Lock

Spring−Loaded Spigot

Figure 1: CBE1 External View

2. When you have finished working on the equipment, close the cabinet doorand then turn the doorknob anti-clockwise. Turn the key anti-clockwisein the door lock to lock the door.

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3.1.1.2 Slide Moveable Racks

Movable Rack AccessBefore sliding the movable rack, ensure that there is free floor space in frontof the cabinet to a depth of 70 cm.

To slide the CBE1 or CBE2 movable racks:

1. Open the cabinet door. Refer to Handle CBE1 and CBE2 Cabinets (Section 3.1.1) for more information.

2. Loosen the two upper retaining screws which hold the movable rack using alarge flathead screwdriver.

3. Loosen the two lower screws using an 8 mm Allen key.

4. Pull the rack out of the cabinet. The rack moves on rollers.

5. When you have finished working on the equipment in the rack, push the rackback into the cabinet using both hands.

6. Tighten the four captive retaining screws loosened in Steps 2 and 3 .

7. Close the cabinet door.

3.1.1.3 Remove and Replace Side Panels

Movable Rack AccessBefore sliding the movable rack, ensure that there is free floor space in frontof the cabinet to a depth of 70 cm.

To remove and replace CBE1 or CBE2 side panels:

1. Open the cabinet door. Refer to Handle CBE1 and CBE2 Cabinets (Section 3.1.1) for more information.

2. Slide the movable rack out of the cabinet. Refer to "Slide Moveable Racks"for more information.

3. Open a side panel using a large flathead screwdriver to retract thespring-loaded spigots shown in Figure 1 .

4. Disconnect the grounding cable from the AMP connector at the top ofthe side panel.

5. Turn the side panel 90 (a right angle) from the cabinet. Lift the side panel tothe upper stop and hold it there. Tilt the upper side of the side panel carefullysideways to the point where it can be lifted. Lift the side panel and remove it.

6. When you have finished working on the equipment in the cabinet, replacethe side panel by holding it at a right angle from the cabinet. Insert the sidepanel in the lower hinge. Move the side panel to the upper hinge by liftingthe side panel a little. Lower the side panel to its normal position.

7. Connect the grounding cable to the AMP connector at the top of the sidepanel.

8. Close the side panel by retracting the spigots to allow it to return to theclosed position. Then release the spigots.

9. Push the movable rack back into the cabinet.


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3.1.2 Handle MCI2 Cabinet

This section contains procedures for opening and closing the cabinet door andsliding the movable racks.

Open and Close the Door To open and close the MCI2 front door:

1. Insert the key in the door lock and turn it clockwise to unlock the door. Thenturn the doorknob clockwise and pull open the door. The following figureshows the cabinet external view.

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9 1 2 3

1 2 3

1 2 3

1 2 3

LockingCatch

Door AlarmOverrideKey Switch

Rack

Three−PointDoor Lock

1 2 3 4 5 6 7

1 2 3 4 5 6 7

1 2 3 4 5 6 7

1 2 3

1 2 3

Figure 2: MCI2 Front External View

2. Insert the key in the door alarm override key switch and turn it clockwise toprevent door alarms being generated.

3. When you have finished working on the equipment, reactivate the door alarmoverride key switch by turning the key anti-clockwise.

4. Close the door and then turn the doorknob anti-clockwise. Turn the keyanti-clockwise in the door lock to lock the door.

Slide Movable Racks To slide the MCI2 movable racks:

1. Open the cabinet front door. Refer to ’Open and Close Doors’ for moreinformation.

2. Loosen, but do not remove, the movable rack retaining screws.

3. Unlock the locking catches and then pull the rack out of the cabinet usingboth hands.

4. When you have finished working on the equipment in the rack, unlock thelocking latches and then push the rack back into the cabinet using bothhands.

5. Tighten the retaining screws loosened in Step 2 .


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Front of Cabinet

Top View

ExternalInterface

Area

HEX1

Slave 1 Master Slave 2

Front View

External Ventsfor HEX1

Partition Wall

DoorHandles

Equipment Label

Figure 5: OBC3 Front and Top External Views

2. When the door is fully opened, the latch bar at the back of the door dropsinto position keeping it open.

3. Insert the key in the door alarm override key switch and turn it clockwise toprevent door alarms being generated. The door alarm override key switchesare shown in the following figures.

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CFU1HEAT

PSSR MBSR2

FCSR

CFU1

MBSR1

Alarm Switches

Microwave Equipmentor Empty

BHPSBBU2

Air Inlet

SmokeDetector

BHPSBBU2

CFU1HEAT

MBSR

Alarm Switchfor Rear Door

NTPL or MicrowaveEquipment

Cable Way

WBC

MBSR

Alarm Switchfor Front Door

Door Alarm

OverrideKey Switch

SmokeDetector

MCO2 MCO4

Water DetectionFloat Switch

Water DetectionFloat Switch

BBU2 BHPS HEAT

Door AlarmOverrideKey Switch

RTC

for Front Door

Figure 6: MCO2 and MCO4 Front Internal Views

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3.2 Adjust STSE FrequencyPrerequisites Note the following conditions. You must:



Ensure that the STSE has had power continuously supplied for the previous60 minutes

Ensure that the frequency counter has had the warm-up period specified bythe manufacturer

Ensure that the second CLLK is in a serviceable condition

Ensure that the ambient temperature remains constant during the

adjustment procedure.


A frequency counter with a resolution of 0.01 Hz at 26 MHz


A small flathead, non-conductive (ceramic) screwdriver suitable for tuning


An extender board or cable for RITs with bottom adjustment aperture

One of the following:

A BTS terminal connected via an RS-232 asynchronous communicationlink cable to the MMI port on the SCFE. Refer to the BTS Terminal User Guide for more information

A BSC terminal connected to the BSC via an RS-232 asynchronousor an X.25 synchronous communication link cable. Refer to the BSC Terminal User Guide for more information


A 9-pin Sub-D plug connected to the TEST socket.

The following pins must be connected to the high impedance input of thefrequency counter:

Pin 1 (GND)

Pin 5 (REFCLK-15) or pin 9 (REFCLK+15).


If you are adjusting the STSE, and the BTS is not equipped with StationUnit redundancy, you must:

Lock (disable) BTS_TEL using the OMC-R, a BSC terminal, or a BTSterminal

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Enter a WTC = 3 minutes to ensure an orderly shutdown of the BTS,and then wait three minutes before continuing.

If BTS_TEL is locked (disabled), all telecommunications resources are lost.

Loss of CallsFailure to comply with the prerequisites can result in the BTS being locked(disabled) and all calls being lost.

Procedure To adjust the output frequency of an STSE in a G2 BTS:

1. Open the front door of the BTS. (Refer to Handle Cabinets (Section 3.1) formore information).

2. If there is SU redundancy, go directly to Step 3 If there is no SU redundancy,use the OMC-R, a BSC terminal, or a BTS terminal to lock (disable)BTS_TEL. Enter a WTC = 3 minutes to ensure an orderly shutdown of theBTS. Wait three minutes before continuing to the next step.

3. Using the OMC-R, a BSC terminal, or a BTS terminal, lock (disable) theappropriate FHU and CLLK MOs (SBLs).If you want to adjust the first unit, you must lock (disable) the MOs (SBLs) forthe second, and vice versa.


5. Connect the frequency counter to the TEST output test point of the STSEin the MBSR.

6. Wait until triggering occurs on the input signal port of the frequency counter,and the display provides at least nine digits of resolution. Then proceedas follows:

If the indicated frequency is between 12 999 999.35 Hz and[thinsp]13000 000.65 Hz (that is, 13 MHz +/-0.65 Hz), continue with Step 9


7. Use a tuning tool to adjust the STSE output frequency to the nominal valueof 13 MHz. Move the potentiometer up and down a few times to removeany oxide. Adjust the STSE potentiometer (TRIM) clockwise to increasethe frequency, or anti-clockwise to decrease it.

8. Tap the casing of the STSE with the handle of a screwdriver to relieve anymechanical stress in the potentiometer.

9. Disconnect the frequency counter from the TEST output test point, and thendisconnect the anti-static wrist strap.

10. Using the OMC-R, a BSC terminal, or a BTS terminal, unlock (initialize) theappropriate FHU and CLLK MOs (SBLs) and then BTS_TEL, if it waslocked (disabled).

11. Repeat the entire procedure for each of the other STSEs.


13. After a period of 24 hours, recheck the STSE output frequencies andre-adjust if necessary.

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3.3 Before You Start to Replace G2 BTS RITsRead this section before starting the procedures in this. All the proceduresare valid for the GSM 900 G2 BTS, the GSM 1800 G2 BTS and the GSM1900 G2 BTS.

Prerequisites Note the following conditions. You must:Have read Safety Rules and Precautions (Section 1) before performing anymaintenance procedures


Know how to use the BTS terminal software for commissioning and testing aBTS

Know how to use RF test and measurement equipment, for example the HP8593A Spectrum Analyzer

Establish an efficient means of communication with an OMC-R operator inorder to lock (disable) and unlock (initialize) the BTS when required.



The hand tools specified in the relevant sections of this chapter

A serviceable replacement RIT with an identical part number, unlessstated otherwise.

Impact on System This depends on the nature of the RIT and its position inthe system. Refer to the specific replacement procedures in this chapter.

Restrictions None.

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3.4 Replace ADPS in MCO2/MCO4 CabinetThis section tells you how to remove and replace an ADPS in an MCO2 orMCO4 cabinet. The following table shows ADPS RIT part numbers.

RIT Description Part Number

ADPS AC/DC Power Supply 3BK 01917 AAA

ADPS AC/DC Power Supply 3BK 01917 ABB

Table 16: ADPS RIT Part Numbers

ADPS Variant and CFUAThe ADPS AAA variant requires the CFUA. If the AAA variant is replaced by anABB variant, the CFUA has to be removed. In both cases, the mode switch

strap on the CFU1 must be reset accordingly.








An RS-232 asynchronous communication link cable to connect the BTSterminal to the MMI port. The MMI port is located on the SCFE in the MBSRin the BTS rack. Refer to the BTS Terminal User Guide for more information.


If the ADPS is replaced without locking (disabling) the associated FUand CU MOs (SBLs), there is no loss of telecommunications resources.The associated MOs (SBLs) do not have to be locked (disabled) if the

replacement of the ADPS can be performed in under 15 minutesIf the ADPS cannot be replaced in under 15 minutes, the associated FUand CU MOs (SBLs) must be locked (disabled). All telecommunicationsresources associated with the MOs (SBLs) are lost.

Restrictions The following restrictions apply to the MCO2 and MCO4 BTS:

MCO2 and MCO4 Standby ModeNever attempt to set the MCO2 or the MCO4 to the standby mode by switchingoff the ADPS. You must always switch off the entire BTS using the BHPScircuit breaker.

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Removing CU PowerIf one CU is in operation and the other is in the off state, you must power off theunused CU using the respective MBPS power switch.

Remove ADPS To removce an ADPS RIT in an MCO2 or MCO4 cabinet:1. Open the front door of the BTS. (Refer to Handle Cabinets (Section 3.1) for

more information).

2. Connect the BTS terminal to the MMI port on the SCFE in the MBSR.

3. If you intend to replace the RIT as one uninterrupted task, taking no longerthan 15 minutes, go directly to Step 4 . Otherwise, use the BTS terminal todisable the associated FU and CU MOs (SBLs).

4. Switch off the CU associated with the ADPS. The switches are located onthe front panel of the MBPS in the MBSR.

5. Remove the AC input supply connector from the front panel of the ADPSin the MBSR. Do NOT switch the ADPS off, UNLESS the replacementprocedure is going to take longer than 15 minutes. When AC power isremoved from the ADPS and it is not switched off, the BBU2 takes overthe load.

6. Remove the ADPS retaining screws.

7. Carefully withdraw the ADPS.

8. Carefully disengage the ADPS from the backplane and fully withdraw itfrom the slot.

9. Switch the replacement ADPS front panel ON/OFF toggle switch to theON position.

Backplane Damage

Replace ADPS To replace an ADPS RIT in an MCO2 or MCO4 cabinet:

1. Push the replacement ADPS fully into the empty slot ensuring that pinsand sockets are correctly aligned.


3. Reconnect the front panel AC input supply connector.

4. At the MBPS, switch on the CU associated with the ADPS. Ensure that

the front panel Input LED is ON.5. Using the BTS terminal, initialize the associated FU and CU SBLs, if they

were disabled.




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3.5 Replace ADPS in MCI2 CabinetThis section tells you how to remove and replace an ADPS in an MCI2 cabinet.The following table shows ADPS RIT part numbers.


ADPS AC/DC Power Supply 3BK 01917 AAA

ADPS AC/DC Power Supply 3BK 01917 ABB

Table 17: ADPS RIT Part Numbers

ADPS Variant and CFUAThe ADPS AAA variant requires the CFUA. If the AAA variant is replaced by anABB variant, the CFUA has to be removed. In both cases, the mode switch

strap on the CFU1 must be reset accordingly.










All telecommunications resources associated with the locked (disabled)FU and CU MOs (SBLs) are lost

All telecommunications resources are lost when BTS_TEL is locked

(disabled)

If there is no SU redundancy, the entire BTS must be locked (disabled).

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Remove ADPS To remove an ADPS RIT in the MCI2 BTS:



3. If the BTS has SU redundancy, go directly to Step 4 . If the BTS has no SUredundancy, use the BTS terminal to disable BTS_TEL. Enter a WTC =3 minutes to ensure an orderly shutdown of the BTS. Wait three minutesbefore continuing to the next step.

4. Using the BTS terminal, disable the FU and CU MOs (SBLs).


6. Switch the front panel ON/OFF toggle switch on the ADPS in the MBSRor the PSSR to the OFF position.

7. Disconnect the ADPS front panel cable.

8. Remove the retaining screws.

9. Carefully disengage the ADPS from the backplane and fully withdraw itfrom the slot.


Replace ADPS To replace an ADPS RIT in the MCI2 BTS:

1. Push the replacement ADPS fully into the empty slot ensuring that pinsand sockets are correctly aligned.


3. Reconnect the front panel cable.4. Switch the front panel ON/OFF toggle switch to the ON position. Check that

the front panel LED is ON.


6. Using the BTS terminal, initialize the FU and CU SBLs and then BTS_TEL,if it was disabled.




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3.6 Replace/Test BBU2This section tells you how to remove, replace and test a BBU2, part number3BK 05477 AA, in an outdoor G2 BTS. The BBU2 can be replaced withoutswitching off the BTS power.

The BBU2 is housed in an MCO2 or MCO4 cabinet, and is connected toa BHPS.

3.6.1 Replace BBU2



An efficient means of communication with the OMC-R operator. Theoperator must check the state of the BTS when required.

Impact on System If there is a mains power failure during the replacement

procedure, the BTS is powered down and all telecommunications resourcesare lost.

Remove BBU2 To remove a BBU2:


2. Locate the BBU2 on the bottom shelf of the MCO2 or MCO4.

3. Ensure that the green AC IN LED on the front panel of the BHPS is ON.The red BBU LED must be OFF.If the red BBU LED is ON, one of the following conditions applies:

There is a mains power failure

Mains power is available, but the BBU2 is recharging following a mainspower failure and recovery.

4. Disconnect the BBU and TEMP BBU connectors on the front panel of theassociated BHPS.

5. Loosen the plastic nuts of the two gas exhaust tubes. Disconnect the tubesfrom the two nipples on the front panel of the BBU2.

6. Remove the screw of the tension strap. Bend the tension strap to getunhindered access to the handle of the BBU2.

Heavy EquipmentThe BBU2 weighs 26 kg. Injury to personnel and damage to equipment mayresult if it is dropped or otherwise mishandled.Be careful when moving or lifting the BBU2.

7. Use the front panel handle to lift the BBU2 from the BTS rack.

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Replace BBU2 To replace a BBU2:

1. Insert a charged replacement BBU2 into the rack.

2. Replace and tighten the screw on the tension strap.

3. Reconnect the two gas exhaust tubes to the front panel of the BBU2,and tighten the plastic nuts.

4. Reconnect the BBU and the TEMP BBU connectors to the front panelof the BHPS.



3.6.2 Test BBU2

Indications of BBU StateAsk the OMC-R operator to check the alarm window and alarm logs for anindication of the state of the BBU2.

Tell the operator to look for:

BHPS temperature sensor alarms

Mmains failure alarms

Low battery alarms.

Prerequisites Note the following conditions. You must ensure that:

The ambient temperature is in the range +10 C to +30 C

There has not been a mains power failure within the last twelve hours

The OMC-R operator has been told to expect battery alarms.


A voltmeter with a range up to 100 VDC

A 200 W, 10 Ohm resistor.


There is no loss of telecommunications resources when testing the BBU2

Testing the BBU2 can cause a Low Battery Alarm to be generated. Notifythe OMC-R operator to expect a battery alarm, so that the alarm can beignored and no unnecessary actions taken.

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Restrictions The five-year life span of the BBU2 can be shortened if:

It is operated at long-lasting ambient temperature above +25 C

The BHPS battery charger is faulty.

Procedure To test a BBU2:1. Open the front door of the BTS. (Refer to Handle Cabinets (Section 3.1) for

more information).

2. Locate the BBU2 on the bottom shelf of the MCO2 or MCO4.

3. Disconnect the two-way male mate-n-lock connector of the power chargingcable.

4. Set the voltmeter to the 100 VDC scale, and connect it to the BBU2 powercharging cable. The positive pole is on pin 1, and the negative pole on pin 2.

5. The open-circuit voltage of the BBU2 must be between 50 VDC and 52 VDC(51 VDC +/-1 VDC). If not, the battery is faulty and needs to be replaced.Refer to Replace BBU2 (Section 3.6.1) for information on replacing theBBU2. Otherwise, continue to the next step.

6. Connect the resistor load across the terminals of the BBU2.

7. Check the load voltage. If the voltage does not stay above 47.5 VDC for thenext 15 minutes, then the battery is faulty and needs to be replaced. Referto Replace BBU2 (Section 3.6.1) for information on replacing the BBU2.Otherwise, continue to the next step.

8. Disconnect the resistor load and the voltmeter.

9. Reconnect the power charging cable.


11. Wait a maximum of 30 seconds for the alarm to deactivate at the OMC -R.

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Note the connector positions carefully. You cannot disconnect the mainsinput power cable.

8. Remove two retaining screws and washers on the front right-hand side ofthe rack.

9. Partially withdraw the BHPS so as to access the rear panel connectors.

10. Disconnect all the rear panel connectors. Note their positions forreconnection.

11. Withdraw the BHPS fully from the rack.

Replace BHPS To replace a BHPS RIT:

1. On the replacement BHPS, make sure the rear side DIP switch has thesame settings as the BHPS removed. Ensure the front panel breakersare in the OFF position.

2. Partially insert the replacement BHPS in the rack.

3. Reconnect all the rear panel connectors disconnected in Step 10 .

4. Fully insert the BHPS in the rack.5. Replace and tighten the two retaining screws and washers on front

right-hand side of the rack.

6. Replace the following front panel connectors on the BHPS:

AC power supply ADPS1

AC power supply ADPS2

AC power supply HEAT

Battery input BBU

Battery temperature sensor input TEMP BBU.

7. Connect the AMP connector at the mains power filter/outlet assembly.

8. Switch ON the main power to the BTS at the main circuit breakers.

9. Switch ON the power at the circuit breakers in the COB1.

10. Replace the COB1 cover plate.

11. Switch the BHPS front panel breakers to ON. Ensure that the front panelgreen LED is ON.

12. Close the front and rear doors of the BTS.

Final Checks (at OMC-R) 1. Ask the OMC-R operator to unlock (initialize) BTS_OM in order to downloadthe BTS software.


alarms: BTS, g-bts, reset, event





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3.8 Replace/Test BU60This section tells you how to remove, replace and test a BU60, part number3BK 06769, in an outdoor G2 BTS. The BU60 can be replaced withoutswitching off the BTS power.

The BU60 consists of four serially-connected 12 V lead-acid batteries, and ishoused in an OBC3 cabinet.

Short-circuiting BatteriesShort-circuiting of battery terminals can cause injury to personnel and damageto equipment.Be careful when handling batteries.

The batteries are connected as shown in the following figure.

1 2 3 4 5 6 7 8 9 0 1 2 3

1 2 3 4 5 6 7 8 9 0 1 2 3

empera ureSensor

FixingStraps

PositiveBU60 Terminal

NegativeBU60 Terminal

BatteryBox

1

1

1

1

1

1

1

1

Figure 8: BU60 Connections and Temperature Sensor

The BU60 is connected in parallel to the DC-bus of the power supply in thePSI1.



A thermometer for measuring the battery temperature

A DC voltmeter for measuring the battery voltage

A load resistor


Impact on System If there is a mains power failure during the replacementprocedure, the BTS is powered down and all telecommunications resourcesare lost.

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3.8.1 Replace BU60

Remove BU60 To remove a BU60 RIT:


2. Loosen the retaining screws and then slide out the BU60 carriage from thecabinet.

3. Remove the M6 nuts from all the terminals (cables are marked + and -)of the BU60.

4. Remove all the battery cables (marked + and -) from the BU60 terminals.

Heavy EquipmentThe BU60 weighs 80 kg. Injury to personnel and damage to equipment mayresult if it is dropped or otherwise mishandled.Be careful when moving or lifting the BU60.

5. Disconnect the fixing straps from the battery box.

6. Remove the individual battery blocks from the battery box.

Replace BU60 To replace a BU60 RIT:

1. Inspect the batteries and terminals of the replacement BU60 for corrosionor cracks.

2. Using a torque wrench fitted with an M6 adaptor, check that all the BU60connections are tightened to a torque of 3.9 Nm.Refer to Figure 8 for details of the battery terminal connections.

3. Install the charged replacement battery blocks in the battery box and secureusing the fixing straps.

Power Module DamageIf the power supply is not switched on at the mains prior to connecting thebattery to the DC bus, the output fuse in the power module can blow.Switch on the power supply at the mains prior to connecting the batteryto the DC bus.

4. Connect all the battery cables (marked + and -) to the BU60 terminals.

5. Replace the M6 nuts on all the terminals of the BU60, and then tighten to atorque of 3.9 Nm using the torque wrench fitted with an M6 adaptor.

6. Insert the BU60 in the cabinet and tighten the retaining screws.

7. Go to Test BU60 Voltage (Section 3.8.2) to perform a voltage test on theBU60.

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3.8.2 Test BU60 Voltage

To perform the voltage test:

1. If necessary, open the front door of the BTS. (Refer to Handle Cabinets ( Section 3.1) for more information).

2. Ensure that the charging power supply is switched on.3. Check the fuses in the battery switch.

4. Switch the battery switch to on.

5. Measure the battery temperature.

6. Press the I Bat button on PSI1 to select the battery current. Ensure that thevalue indicated on the display is 0.0 A

7. Measure the voltage of the individual battery blocks in the BU60, and thetotal voltage of the BU60. The following table BU60 Battery Bl ock and Total Voltage at Different Temperatures shows the permissible ranges for thesevoltages at different temperatures.

8. If the total voltage is out of range, check the AC/DC converter and thetemperature sensor.

9. If any of the block voltages are out of range, continue charging the battery,and repeat the measurement after 30 minutes. If the block voltage remainsout of range, you must perform the capacity test. Refer to Test BU60 Capacity (Section 3.8.3) for more information.

10. Close the front doors of the BTS.

BU60Temperature (C)

BlockVoltage (V)

Total BU60Voltage (V)

BU60Temperature (C)

BlockVoltage (V)

Total BU60Voltage (V)

0 13.78-14.53 56.08-56.28 30 13.03-13.73 53.56-53.76

5 13.68-14.41 55.66-55.86 35 12.91-13.61 53.14-53.34

10 13.56-14.28 55.25-55.45 40 12.80-13.48 52.72-52.92

20 13.26-13.98 54.40-54.60 45 12.74-13.42 52.30-52.50

25 13.15-13.85 53.98-54.18 50 12.68-13.36 51.90-52.10

Table 19: BU60 Battery Block and Total Voltage at Different Temperatures

3.8.3 Test BU60 Capacity

You must perform the capacity test if any of the block voltages measured in thevoltage test in Test BU60 Voltage (Section 3.8.2) are out of range.

Check BatteryTemperature

To perform the capacity test:

1. If necessary, open the front door of the BTS. (Refer to Handle Cabinets ( Section 3.1) for more information).

2. Press the I Bat button on the PSI1 to select the battery current.

3. Ensure that the value indicated on the display is 0.0 A

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This value must be maintained for a minimum of 30 minutes beforeproceeding with the remainder of this procedure.

4. Measure the battery temperature.

5. Disconnect the battery switch.

6. Connect a load resistor, set to 0 A, to the BU60 terminals.

7. Set the BU60 battery current to 60 A.

Measure Block Voltage 1. Measure the voltage of each of the single battery blocks in the BU60.The current must be maintained at 60 A for a period of 10 minutes foreach of the tests.

2. If any of the block voltages drops below the values given in the following table,the block is faulty. One of the following actions must then be performed:

Replace the individual battery block if the test is on a new replacementBU60 battery block

If you are performing this test as part of a preventive maintenanceprocedure on a used BU60, the BU60 must be replaced.

BatteryTemperature (C)

BlockDischargeVoltage (V)

BatteryTemperature (C)

BlockDischargeVoltage (V)

10 10.5 30 11.6

20 11.1 40 12.0

Table 20: BU60 Battery Block Discharge Voltage at Different Temperatures

3. Set the load resistor to 0 A.

4. Remove the load resistor.

5. Ensure that the BU60 is correctly connected to the power supply.

Power Module DamageIf the power supply is not switched on at the mains prior to connecting thebattery to the DC bus, the output fuse in the power module can blow.Switch on the power supply at the mains prior to connecting the batteryto the DC bus.

6. Switch on the battery switch.

7. Charge the BU60 until the current indicated on the PSI1 is 0.0 A.



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3.9 Replace CFUThe following table shows CFU RIT part numbers.


CFU1 Cooling Fan Unit 1U 3BK 01267 AA

CFUA Cooling Fan Unit Additional 3BK 05936 AA

CFUT Cooling Fan Unit Top 3BK 01324 AA

Table 21: CFU RIT Part Numbers












The CFU1 and the CFUT can be replaced by hot-swapping (no powersupply switched off), and there is no loss of telecommunications resources

When a CFUA is replaced, all telecommunications resources handled bythe CU and FU are lost.

Restrictions Note the following restriction:

Operating Without CoolingEnsure that the replacement task is undertaken as a single uninterruptedactivity. Do not allow the rack to operate without cooling for longer than 15minutes.

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3.9.1 Replace CFU1

Remove CFU1 To remove a CFU1 RIT:




4. Obtain access to the CFU1 according to the cabinet type:

For CBE1/CBE2 cabinets, and for information on opening the cabinetdoors. Refer to Handle MCI2 Cabinet (Section 3.1.2) for informationon sliding out the movable rack

For the MCI2 cabinet, refer to Handle MCI2 Cabinet (Section 3.1.2) for

information on opening the cabinet doors. Carefully remove the airfunnel by loosening the two retaining screws

For MCO2/MCO4 cabinets, refer to Handle MCO2, MCO4 and OBC3 Cabinets (Section 3.1.3) for information on opening the cabinet doors.


6. Disconnect the cables at rear of the CFU1. Note the connector positionsfor reconnection.

7. Remove the four CFU1 retaining screws.

8. Remove the CFU1 from the rack.

Replace CFU1 To replace a CFU1 RIT:

1. Ensure that the mode switching strap on the replacement CFU1 has thesame configuration as the removed CFU1.

2. Insert the replacement CFU1 in the rack.

3. Replace and tighten the four retaining screws.

4. Reconnect the cables at rear of the CFU1.


6. For the MCI2 cabinet, replace the air funnel and tighten the retaining screws.

7. Push back the movable rack, if appropriate, and close the cabinet doors.

8. Using the BTS terminal, initialize the CCFn SBL.




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3.9.2 Replace CFUA

Remove CFUA To remove a CFUA RIT:



3. Using the BTS terminal, disable the FU and CU SBLs associated withthe ADPS to be removed.



6. Remove the ADPS installed above the CFUA in the MBSR. Refer to Replace ADPS in MCI2 Cabinet (Section 3.5) for more information.

7. Loosen the four captive screws at the top and bottom front corners ofthe CFUA

8. Pull out the movable rack.

9. Disconnect the CFUA cable at the rear of the CFU1.

10. Remove the CFUA retaining screw.

11. Remove the CFUA from the rack.

Replace CFUA To replace a CFUA RIT:

1. Insert the replacement CFUA in the rack.

2. Replace and tighten the CFUA retaining screw.

3. Connect the CFUA cable at the rear of the CFU1.4. Push in the movable rack.

5. Tighten the four captive screws at the top and bottom front corners ofthe CFUA

6. Re-insert the ADPS. Check that the green AC IN LED is ON.

7. Power ON the ADPS and check that the green ON LED is ON.


9. Using the BTS terminal, initialize the CCFn SBL and then the FU andCU SBLs.




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3.9.3 Replace CFUT

Remove CFUT To remove a CFUT RIT:



3. Using the BTS terminal, disable the CCFn SBL, where n = the SBL numberbetween 1 and 23. If n is unknown, use the Display Hardware Configurationscreen to find it.

4. Remove the four rack screws and the two Allen screws on the bottom frontpanel of the rack.

5. Pull the rack forward to gain access to the rear panel cables on the CFU1.


7. Disconnect the cable that connects the CFUT to the CFU1.

8. Remove the earth lead on the CFUT.9. Loosen the four spring-loaded screws securing the CFUT to the cabinet.

10. Remove the CFUT from the rack.

Replace CFUT To replace a CFUT RIT:

1. Insert the replacement CFUT in the rack.

2. Tighten the four spring-loaded screws to secure the CFUT to the cabinet.

3. Connect the earth lead to the CFUT.

4. Reconnect the cable that connects the CFUT to the CFU1.


6. Push the rack back into the cabinet.

7. Replace and tighten the four rack screws and the two Allen screws onthe bottom front panel of the rack.

8. Using the BTS terminal, initialize the CCFn SBL.

9. Using the BTS terminal, check there are no outstanding alarms on theBTS, and that all SBLs are in traffic.



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3.10 Replace HEAT, HEXUThis procedure tells you how to replace the HEAT/HEXU in an MCO2 or MCO4cabinet. The following table shows HEAT/HEXU RIT part numbers.


HEAT Heating Unit 3BK 05409 AA

HEXU Heat Exchanger Unit 3BK 01837 AA

Table 22: HEAT/HEXU RIT Part Numbers




Side cutting pliers

Two cable ties, approximately 10 cm in length.


Hot-Replacement of RITsThese RITs can be replaced without switching off any power supplies, orlocking (disabling) any MOs (SBLs).

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2. Loosen the two retaining screws on the D-connector on the right hand sideof the HEXU with a flathead screwdriver. Then disconnect the connector.The following figure shows the front and side views of the HEXU.

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

(air flow inwards)Internal Fan

Cooled AirOutlet

MountingBracket

MountingBracket

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 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 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

MountingBracket

MountingBracket

RearFront

EquipmentLabels

Alarm, Signal andPower Connector

(inside cabinet)Front View Side View

Figure 9: HEXU Front and Side Views

3. Loosen, but do not remove, the four retaining screws and washers thatsecure the HEXU.

4. Lift the HEXU approximately 15 mm and remove the retaining screws andwashers. Then remove the HEXU from the door. Be careful not to damagethe RF seals.

5. Place the replacement HEXU against the door and replace the four retainingscrews and washers. Support the HEXU until the retaining screws are fullytightened. Be careful not to damage the RF seals.

6. Connect the D-connector on the right hand side of the HEXU, and thentighten the two retaining screws with a flathead screwdriver.

7. Close the rear door of the BTS.

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3.11 Replace DCDBThe DCDB RIT part number is 3BK 01934 AA.



Side cutting pliers

At least 20 cable ties, approximately 10 cm in length

An efficient means of communication with the OMC-R operator. Theoperator must lock (disable) and unlock (initialize) BTS_TEL when required.

Impact on System All telecommunications resources are lost when BTS_TELis locked (disabled).

Equipment Shock HazardPossible death or serious physical harm to personnel and damage to equipmentmay result if the power to the equipment is not removed prior to this procedure.Switch off the external power supply to the BTS cabinet before replacing theDCDB. Ensure that no one else can switch on the power supply until youhave finished the procedure.

Remove DCDB To remove a DCDB RIT:

1. Ask the OMC-R operator to lock (disable) BTS_TEL. Tell the operator toenter a WTC = 3 minutes to ensure an orderly shutdown of the BTS. Waitthree minutes before continuing to the next step.

2. Open the front door of the BTS. (Refer to Handle Cabinets (Section 3.1) for

more information).3. Connect the anti-static wrist strap.

4. Switch the four front panel ON/OFF switches (1, 2, 3 and 4 ) on the DCDBin the MBSR to the OFF position.

5. Switch OFF the mains power to the BTS.

6. Remove the four front panel DCDB retaining screws.

7. Partially withdraw the DCDB sufficiently to access the side cables.

8. Disconnect the side cables, noting their position for reconnection. The cableties may have to be cut.

9. Remove the DCDB from the rack.

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Replace DCDB To replace a DCDB RIT:

1. Partially insert the replacement DCDB.

2. Reconnect the side cables and secure them with new cable ties wherenecessary.


4. Switch ON the mains power to the BTS.

5. Switch the four front panel ON/OFF switches to the ON position. Check thatthe ON LEDs on the FCPS and the MBPS are ON.










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3.12 Replace Dummy PanelsThe following table shows CUDP and FUDP RIT part numbers.


CUDP Carrier Unit Dummy Panel for MBSR 3BK 06170 AA

CUDP Carrier Unit Dummy Panel for FCSR AA 3BK 06170 AB

CUDP Carrier Unit Dummy Panel for FCSR AB 3BK 06170 AC

FUDP Frame Unit Dummy Panel for FU3 3BK 06174 AA

Table 23: Dummy Panel RIT Part Numbers

Tools and Materials You must have a small crosshead screwdriver.


Procedure To replace a dummy panel RIT:


2. Locate the dummy panel in the MBSR or the FCSR and remove theretaining screws.


4. Carefully disengage the dummy panel from the backplane and fully withdrawit from the slot.

5. If you are going to replace the dummy panel with an FU RIT or a CU RIT,go to the appropriate section in this chapter for installing the new RIT.Replace G2 BTS Frame Unit (Section 3.14) describes how to install an FURIT, and Replace G2 BTS Transmitter (Section 3.29) and Replace G2 BTS Receiver (Section 3.20) describe how to install Transmitter and ReceiverRITs, respectively.


If you are going to replace the dummy panel with another dummy panel,push the replacement fully into the empty slot ensuring that pins andsockets are correctly aligned.




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3.13 Replace FCPSThe FCPS RIT part number is 3BK 00797 AAB.








An RS-232 asynchronous communication link cable to connect the BTSterminal to the MMI port. The MMI port is located on the SCFE in the MBSR

in the BTS rack. Refer to the BTS Terminal User Guide for more information.


All telecommunications resources associated with the locked (disabled)FU and CU MOs (SBLs) are lost

All telecommunications resources are lost when BTS_TEL is locked(disabled).

Remove FCPS To remove an FCPS RIT:

1. Open the front door of the BTS. (Refer to Handle Cabinets (Section 3.1) for

more information).


3. Using the BTS terminal, disable the FU and CU SBLs associated withthe FCPS to be replaced.


5. Switch the CU and FU front panel ON/OFF switches on the FCPS in theFCSR to the OFF position.

6. Remove the FCPS retaining screws.

7. Carefully disengage the FCPS from the backplane and fully withdraw it

from the slot.


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Replace FCPS To replace an FCPS RIT:

1. Push the replacement FCPS fully into the empty slot ensuring that pinsand sockets are correctly aligned.


3. Switch the CU and FU front panel ON/OFF switches to the ON position.Check that the front panel LEDs on the FCPS are ON.


5. Using the BTS terminal, initialize the FU and CU SBLs.




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3.15.1 Replace HEF1

To replace an HEF1:


2. Remove the following connectors from the HEC1:

X10

X22

Equipment HazardThe HEF1 is attached to the door. Injury to personnel and damage toequipment may result if it dropped or otherwise mishandled.Be careful when removing the HEF1. Do NOT remove the bolts that secure it tothe door until it is properly supported.

3. Remove the two Allen bolts at the top of the HEF1.

4. Lift the HEF1 from the rear door.

Gasket DamageWhile placing the replacement HEF1 against the rear door in the next step, becareful not to damage the gasket between the HEF1 and the door.

5. Place the replacement HEF1 against the rear door in line with the two guidebolts at the bottom and the two Allen bolt positions at the top.

Equipment HazardThe HEF1 will be attached to the door. Injury to personnel and damage toequipment may result if it dropped or otherwise mishandled.Be careful when replacing the HEF1. Support it until the bolts that secure it tothe door are fully tightened.

6. Replace and tighten the two Allen bolts to secure the HEF1 to the door.

7. Replace the following connectors to the HEC1:

X10

X22

8. Close the rear doors of the BTS.

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3.15.2 Replace HEC1


2. Remove the following connectors from the HEC1:

X1

X2

X3

X4

X22

X10

3. Remove the three 2 mm Allen screws from the front cover and open theHEC1.

Equipment Hazard The HEC1 is attached to the door. Injury to personnel anddamage to equipment may result if it dropped or otherwise mishandled. Becareful when removing the HEC1. Do NOT remove the bolts that secure it tothe door until it is properly supported.

4. Remove the two Allen bolts from the bottom of the HEC1 and one from theinside of the HEC1 on the left at the back.

5. Lift the HEC1 from the rear door.

6. Place the replacement HEC1 against the rear door in line with the threeAllen bolt positions in Step 4 .

Equipment Hazard The HEC1 will be attached to the door. Injury to personneland damage to equipment may result if it dropped or otherwise mishandled. Becareful when replacing the HEC1. Support it until the bolts that secure it tothe door are fully tightened.

7. Replace and tighten the three Allen bolts removed in Step 4 to secure theHEC1 to the door.

8. Replace the front cover of the HEC1, and then replace and tighten thethree 2 mm Allen screws.

9. Replace the following connectors to the HEC1:X1

X2

X3

X4

X22

X10

10. Close the rear doors of the BTS.

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3.18 Replace Over Voltage Protection UnitThis procedure tells you how to replace the Over Voltage Protection Unit ina COB1 in an MCO2 or MCO4 cabinet. The following table shows COB1RIT part numbers.


COB1 Connection Box 1 (Power) (MCO2) 3BK 05408 AA

COB1 Connection Box 1 (Power) (MCO2/MCO4) 3BK 05408 AB

COB1 Connection Box 1 (Power) (MCO2/MCO4) 3BK 05408 AC

Table 26: COB1 RIT Part Numbers





Equipment Shock Hazard .Possible death or serious physical harm to personnel and damage to equipmentmay result if the power to the equipment is not removed prior to this procedure.Switch off the external power supply to the BTS cabinet before replacing theOver Voltage Protection Unit. Ensure that no one else can switch on the powersupply until you have finished the procedure.

Remove Unit To remove an Over Voltage Protection Unit:



3. Remove the cover plate of the COB1. The COB1 is located on the bottomplate of the cabinet, behind the BHPS.

4. Switch OFF (down) the mains power at the circuit breakers in the COB1,as shown in the following figure.

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1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

OFFOFF

1 2

1 2

ConnectionBlock andCircuitBreakers

CabinetBottom

Plate

Over VoltageProtection Unit

Power Filter

FixingPlate

Cover PlateHandle

Top View

Cover PlateFixing Holes

FixingPlate

12

12

1

1

Front View (Cover Plate Removed)

OFFMains

Figure 10: COB1 Front and Top Views

5. Switch OFF the mains input power to the BTS at the main circuit breaker.

6. Remove the retaining screws and the front cover of the mains powerfilter/outlet assembly.

7. At the Over Voltage Protection Unit, slacken the cable screws and disconnectthe Live and Neutral wires.

8. Remove the Over Voltage Protection Unit by pulling the fixing loopdownwards using a screwdriver.

Replace Unit To replace an Over Voltage Protection Unit:

1. Insert the replacement unit.

2. Reconnect the Live and Neutral wires and tighten the cable screws.

3. Replace the front cover of the mains power filter/outlet assembly, and thenreplace and tighten the retaining screws.

4. Switch ON the mains input power to the BTS at the main circuit breaker.

5. Switch ON (up) the mains power at the circuit breakers in the COB1. Checkthat the green Over Voltage Protection LED is ON and the red LED is OFF.

6. Replace the cover plate on the COB1.


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3.19 Replace/Test PM06The PM06 is part of the AC/DC power supply and battery charger in an OBC3cabinet. The following figure shows the front panel layout.

PM06 #1 PM06 #2 PM06 #3

PSI1

PMSR

PMSR

Display Unit

FrontCover

PM06 #4 PM06 #5 PM06 #6

Figure 11: AC/DC Power Supply and Battery Charger

The AC/DC power supply and battery charger contains two PMSRs and aPSI1. Depending on the BTS configuration, between four and six PM06s canbe installed in the PMSRs.

The PM06 includes a case with heat sinks and a front panel.

Prerequisites The jumper in clamp X6 in the PSI1 must be in the correctposition for the number of PM06s installed, according to the following figure.

1 2 3 1 2 3 1 2 3

PM06 1 toPM06 #4Installed



Figure 12: Jumper Settings at Clamp X6 in PSI1

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An adjustable DC source capable of supplying 60 V at 1 A

A wire-bridge for short-circuiting clamps

A thermometer for measuring the battery temperature

A DC voltmeter for measuring the battery voltage

A load resistor


Impact on System During the replacement procedure, there is no impact onthe system. During the testing procedures, the BTS is powered down and alltelecommunications resources are lost.

3.19.1 Replace PM06

To replace a PM06:


2. Loosen the four captive M2.5 screws that retain the PM06 in the PMSR,shown in Figure 13 .

3. Using the two handles on the front of the PM06, pull out the PM06 fromthe PMSR.

Damage to PM06 or FuseTo avoid damage to the fuse or the PM06, an operating PM06 must be allowedto cool down between removal and re-insertion.Allow an operating PM06 to cool down between removal and re-insertion.

4. Carefully insert the replacement PM06 into the PMSR.

5. Tighten the four captive M2.5 screws to secure the PM06 in the PMSR.

System

Uo

Error

OUTPUT

System

Uo

Error

OUTPUT

Figure 13: PM06 Front View

6. Now go to Test PM06 Switching Thresholds (Section 3.19.2) to perform aswitching thresholds test on the PM06.

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3.19.2 Test PM06 Switching Thresholds

To test the switching thresholds of the PM06:


2. Switch the mains power supply to OFF.

3. Switch the battery switch to OFF.

4. Switch the breakers on the DCDB to the off position.

5. Connect an adjustable DC source capable of supplying 60 V at 1 A to theclamps +X5/-X5 in PSI1.

6. Using a wire-bridge, short-circuit the clamps X3/23-24.

7. Increase the voltage slowly from 0 V to 53 V. Ensure that the testspecifications in the following tables are achieved.

LED Status Specification

Red Error LED goes off at: > 5 V +/- 1 V

Green Uo LED goes on at:

PM06 #2/PM06 #5 > 50 V +/- 1 V

PM06 #3/PM06 #6 > 50 V +/- 1 V

PM06 #1/PM06 #4 > 51 V +/- 1 V

Table 27: Threshold Specifications for PM06 Status LEDs - Increasing Voltage

Deep Discharge Alarm Specification

Contacts X3/17-18 open. < 50 V +/- 1 V

Contacts X3/17-18 close. > 50 V +/- 1 V

Deep discharge relay switches on. > 51 V +/- 1 V

Table 28: Threshold Specifications for PM06 Deep Discharge Alarms - Increasing Voltage

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8. Slowly decrease the voltage from 53 V to 0 V. Ensure that the testspecifications in the following tables are achieved.


Green Uo LED goes off at:

PM06 #1/PM06 #4 < 50 V +/- 1 V

PM06 #3/PM06 #6 < 44 V +/- 1 V

PM06 #2/PM06 #5 < 42 V +/- 1 V

Red Error LED goes on at: < 5 V +/- 1 V

Table 29: Threshold Specifications for PM06 Status LEDs - Decreasing Voltage

Deep Discharge Alarm Specification

Contacts X3/17-18 close > 44 V +/- 1 V

Contacts X3/17-18 open < 44 V +/- 1 V

Deep discharge relay switches off < 42 V +/- 1 V

Table 30: Threshold Specifications for PM06 Deep Discharge Alarms - Decreasing Voltage

9. Now go to Test PM06 Operation (Section 3.19.3) to test the operationof the PM06.

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3.19.3 Test PM06 Operation

To test the operation of the PM06:

1. Switch the breakers on the DCDB to the off position.

2. Switch the mains power supply to ON.

3. Connect the battery unit. Check the fuses and the correct polarity, thenswitch on the battery switch.

4. Switch on breakers No.3 at all DCDBs.

5. Ensure that the test specifications in the following tables are achieved.


Green System LED On

Green Uo LED On

Red Error LED Off

Table 31: Operational Specifications for PM06 Status LEDs

Status Signal Contacts Specification

X3/15-16 (mains failure) Closed

X3/17-18 (deep discharge) Closed

X3/19-20 (battery discharging/UPSA) Closed

X3/21-22 (system failure/NPSA) Closed

Table 32: Operational Specifications for PM06 Status Signal Contacts

6. Now go to Test PM06 Output Voltage (Section 3.19.4) to test the outputvoltage of the PM06.

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3.19.5 Test PM06 Failure Conditions

To test the failure conditions of the PM06, you must simulate:

A mains power supply failure

Power module(s) failure.

Simulate Mains PowerSupply Failure

1. Switch the mains power supply to ON.

2. Connect the battery unit. Check the fuses and the correct polarity, thenswitch on the battery switch.

3. Switch on breakers No.3 at all DCDBs.

4. Switch on the remaining breakers at the DCDB, or connect an artificial load.The load must be greater than 3 A.

5. Simulate a mains power supply failure by switching off the mains voltage.Ensure that the test specifications in the following table are achieved.

Test Specification

Green System LED Off

Green Uo LED On

Red Error LED On

X3/15-16 (mains failure) Open


X3/19-20 (battery discharging/UPSA) OpenX3/21-22 (system failure/NPSA) Open

Table 35: PM06 Mains Failure Specifications

6. Switch on the mains voltage.

Simulate PowerModule(s) Failure

1. Simulate a power module failure by removing one PM06 from the PMSR(refer to Replace PM06 (Section 3.19.1) for more information on removing aPM06). Ensure that the test specifications in the following table are achieved.

Test Specification

Green System LED at the PM06 to the left-hand sideof the removed PM06

Off

Green System LED at remaining PM06 On

Green Uo LED On

Red Error LED Off



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Test Specification

X3/19-20 (battery discharging/UPSA) Closed

X3/21-22 (system failure/NPSA) Open

Table 36: PM06 Failure Specifications

Damage to PM06 or Fuse .To avoid damage to the fuse or the PM06, an operating PM06 must be allowedto cool down between removal and re-insertion.Allow an operating PM06 to cool down between removal and re-insertion.

2. Carefully plug the removed PM06s back into the PMSR.

3. Simulate a failure of two power modules by removing two PM06 from thePMSR (refer to Replace PM06 (Section 3.19.1) for more information onremoving a PM06).

4. Set the output current Io to the following value:10(m-2) A < Io < 10(m-1) A, where m = the number of installed PM06s.Ensure that the test specifications in the following table are achieved.

Test Specification


Off

Green System LED at remaining PM06 OnGreen Uo LED On

Red Error LED Off



X3/19-20 (battery discharging/UPSA) Open


Table 37: Two-PM06 Failure Specifications



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6. Simulate a failure of three power modules by removing three PM06 from thePMSR (refer to Replace PM06 (Section 3.19.1) for more information onremoving a PM06).

7. Set the output current Io to the following value:10(m-3) A < Io < 10(m-2) A, where m = the number of installed PM06s.

Ensure that the test specifications in the following table are achieved.

Test Specification


Off

Green System LED at remaining PM06 On

Green Uo LED On

Red Error LED Off



X3/19-20 (battery discharging/UPSA) Open


Table 38: Three-PM06 Failure Specifications






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3.20 Replace G2 BTS ReceiverThe following table shows Receiver RIT part numbers.


RXDD Receiver DCS with Antenna Diversity 3BK 01638 AA

RXGD Receiver GSM with Diversity 3BK 01185 AA

RXGD Receiver GSM with Diversity (standardband)

3BK 01185 AB

RXPD Receiver PCS with Antenna Diversity 3BK 06818 AA

Table 39: G2 BTS Receiver RIT Part Numbers








Impact on System All telecommunications resources are lost if the last CU MO(SBL) is locked (disabled). Otherwise, eight time slots are lost.

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Remove Receiver To remove a Receiver RIT:






6. Disconnect the IN and DIV IN RF cables on the faulty Receiver in theMBSR or the FCSR.

7. Remove the Receiver retaining screws.

8. Carefully disengage the Receiver from the backplane and fully withdraw itfrom the slot.


Replace Receiver To replace a Receiver RIT:

1. Push the replacement Receiver fully into the empty slot ensuring that pinsand sockets are correctly aligned.

2. Replace and tighten the Receiver retaining screws.

3. Reconnect the IN and DIV IN RF cables.

4. Disconnect the anti-static wrist strap.5. Using the BTS terminal, initialize the associated CU SBL and then BTS_TEL,

if it was disabled.




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3.21 Replace/Test G2 BTS Residual Current DeviceThis procedure tells you how to remove, replace and test the Residual CurrentDevice located in a COB1 in an MCO2 or MCO4 cabinet. The following tableshows COB1 RIT part numbers.


COB1 Connection Box 1 (Power) (MCO2) 3BK 05408 AA

COB1 Connection Box 1 (Power) (MCO2/MCO4) 3BK 05408 AB

COB1 Connection Box 1 (Power) (MCO2/MCO4) 3BK 05408 AC

Table 40: COB1 RIT Part Numbers

3.21.1 Replace G2 BTS Residual Current DeviceTools and Materials You must have:




Equipment Shock Hazard .

Possible death or serious physical harm to personnel and damage to equipmentmay result if the power to the equipment is not removed prior to this procedure.Switch off the external power supply to the BTS cabinet before replacing theResidual Current Device. Ensure that no one else can switch on the powersupply until you have finished the procedure.

Remove Device To remove a Residual Current Device:



3. Remove the cover plate of the COB1. The COB1 is located on the bottomplate of the cabinet, behind the BHPS.

4. Switch OFF (down) the mains power at the circuit breakers in the COB1,as shown in Figure 14 .

5. Switch OFF the mains input power to the BTS at the main circuit breaker.

6. Remove the Residual Current Device.

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Replace Device To replace a Residual Current Device:

1. Insert the replacement unit.

2. Switch ON the mains input power to the BTS at the main circuit breaker.

3. Switch ON (up) the mains power at the circuit breakers in the COB1. Checkthat the green Over Voltage Protection LED is ON and the red LED is OFF.

4. Replace the cover plate on the COB1.


Final Checks (at OMC-R) 1. Ask the OMC-R operator to unlock (initialize) the BTS_OM MO (SBL) inorder to download the BTS software.



state- changes: BTS_OM, -> IT, BTS downloaded, autonomous.




1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2

ResidualCurrentDevice

ResidualCurrentDeviceTest Button

OFFOFF

1

1

ConnectionBlock andCircuitBreakers

CabinetBottomPlate

FixingPlate

Cover PlateHandle

Top View

Cover PlateFixing Holes

FixingPlate

Front View (Cover Plate Removed)

OFFMains

Figure 14: COB1 Front and Top Views

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3.22 Replace G2 BTS RFEThe following table shows RFE RIT part numbers.


FED2 Receiver Front-End DCS Two Carriers 3BK 01843 AAA

FED2 Receiver Front-End DCS Two Carriers 3BK 01843 AAB

FED8 Receiver Front-End DCS Eight Carriers 3BK 01845 AAA

FED8 Receiver Front-End DCS Eight Carriers 3BK 01845 AAB

FED8 Receiver Front-End DCS Eight Carriers 3BK 01845 ABA

FEG2 Receiver Front-End GSM Two Carriers 3BK 01841 AAA

FEG2 Receiver Front-End GSM Two Carriers 3BK 01841 AAB

FEG8 Receiver Front-End GSM Eight Carriers 3BK 01842 AAA

FEG8 Receiver Front-End GSM Eight Carriers 3BK 01842 AAB

FEP8 Receiver Front-End PCS Eight Carriers 3BK 06819 AAA

Table 41: G2 BTS RFE RIT Part Numbers


A small crosshead screwdriverA torque wrench with 8 mm and 20 mm adaptors








If the BTS is equipped with antenna diversity, there is no loss oftelecommunications resources. All telecommunications resources areautomatically diverted to the diversity antenna

If there is no antenna diversity, BTS_TEL and RA must be locked (disabled)and all telecommunications resources are lost.

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Remove RFE To remove an RFE RIT:



3. If there is antenna diversity go directly to Step 5 . If there is no antennadiversity, use the BTS terminal to disable BTS_TEL. Enter a WTC = 3minutes to ensure an orderly shutdown of the BTS. Wait three minutesbefore continuing to the next step.



6. Disconnect the RF cables from the front panel of the RFE in the MBSR.Carefully note the position for reconnection.

7. Remove the RFE retaining screws.

8. Carefully disengage the RFE from the backplane and fully withdraw itfrom the slot.


Replace RFE To replace an RFE RIT:

1. Push the replacement RFE fully into the empty slot ensuring that pinsand sockets are correctly aligned.

2. Replace and tighten the RFE retaining screws.

3. Reconnect the front panel RF cables on the RFE. Use the torque wrench setto 1 Nm, to tighten the lock nuts of the N type and the SMA type connectors.

4. Check that the green DC1 and DC2 LEDs are ON, and that the SYSTand REL LEDs are OFF.


6. Using the BTS terminal, initialize RA and then BTS_TEL, if they weredisabled.




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3.23 Replace RTCThe following table shows RTC RIT part numbers.


CRBG Celwave RTC Basic GSM 3BK 01609 AA

CREG Celwave RTC Extension GSM 3BK 01610 AA

FRBG Forem RTC Basic GSM 3BK 01613 AA

FREG Forem RTC Extension GSM 3BK 01614 AA

RC4D RTC Four Carriers DCS (Forem) 3BK 05993 AAA

RC4D RTC Four Carriers DCS (Celwave) 3BK 05993 AAB

RC8D RTC Eight Carriers DCS (Forem) 3BK 05994 AAA

RC8D RTC Eight Carriers DCS (Celwave) 3BK 05994 AAB

Table 42: RTC RIT Part Numbers

Prerequisites Note the following condition:

Replacement RTC Cavities .The cavities of the replacement RTC RIT must be in the parked position.


A small and a medium crosshead screwdriver

A small and a medium flathead screwdriver

A torque wrench with 8 mm, 20 mm, and 27 mm or 32 mm adaptors







An RS-232 asynchronous communication link cable to connect the BTSterminal to the MMI port. The MMI port is located on the SCFE in the MBSRin the BTS rack. Refer to the BTS Terminal User Guide for more information

A 50 Ohm resistor load.

Impact on System All telecommunications resources are lost when the

BTS_TEL and RA MOs (SBLs) are locked (disabled).

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3.23.1 Replace CREG and CRBG

To replace the CREG or the CRBG, you must:

Lock (disable) BTS_TEL and RA

If the CREG is being replaced, remove the CREG configuration in thesoftware

Remove the CREG cables or the CRBG cables, as appropriate

Remove the CREG or CRBG assembly, as appropriate

Install the new CREG or CRBG assembly, as appropriate

Reconnect the CREG cables or reconnect the CRBG cables, as appropriate

If a CREG is installed, perform a global park

Unlock (initialize) RA and BTS_TEL.

Lock (Disable) MOs(SBLs)

To disable BTS_TEL and RA:



3. Use the BTS terminal to disable BTS_TEL. Enter a WTC = 3 minutesto ensure an orderly shutdown of the BTS. Wait three minutes beforecontinuing to the next step.

4. Use the BTS terminal to disable RA.


6. If the CREG is being replaced, go to ’Remove the CREG Configuration’in this section. If the CRBG is being replaced, go to ’Remove the CRBGCables’ in this section.

Remove the CREGConfiguration

If the CREG is being replaced, remove the CREG configuration in the software:

1. Connect a VT100 terminal or a PC with a VT100 emulator to the Localconnector on the front of the CRBG in the RTC subrack.

2. Switch the Q1/Local switch on the CRBG to the Local position.

3. Enter I to access the Installation menu.

4. Enter R to remove the CREG.

5. Enter Y to the question Are you sure ?

6. Check that cavities 5 to 8 are set to 963.4 MHz.

7. Power down the CRBG by switching the ON/OFF toggle switch on the frontpanel of the CRBG to the OFF position.

8. Go to ’Remove the CREG Cables’ in this section.

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Remove the CREGCables

If the CREG is being replaced, remove the connecting cables:

1. Power down the CRBG by switching the ON/OFF toggle switch on thefront panel to the OFF position.

2. Remove the following cables at the rear of the CREG, noting the connectorpositions carefully:

One Extension Sub-D connector

One AMP connector.

Access to the connectors can be made via the left-hand side of the movablerack.

3. Remove a maximum of four coaxial cables TX-5 - TX-8 from the front panelof the CREG. Note the N type connector positions carefully.

4. Go to ’Remove the CREG or CRBG’ in this section.

Remove the CRBGCables

If the CRBG is being replaced, remove the connecting cables:

1. Power down the CRBG in the RTC subrack by switching the ON/OFF toggleswitch on the front panel to the OFF position.

2. Remove the following cables at the rear of the CRBG, noting the connectorpositions carefully:

Four Sub-D connectors Q1 IN, Q1 OUT, "to SCFE", and Extension

Two mate-n-lock connectors LINE1 and LINE2

One AMP connector.

Access to the connectors can be made via the left-hand side of the movablerack.

3. Remove the following coaxial cables from the front panel of the CRBG:

One RTE connector (SMA type) by loosening the connector lock nut

One ANT OUT connector (7/16 type) by loosening the connector lock nut

A maximum of four N type connectors TX-1 - TX-4 by loosening theconnector lock nuts. Note the connector positions carefully

If fitted, one Local Sub-D connector.

4. Go to ’Remove the CREG or CRBG’ in this section.

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Remove the CREG orCRBG

To remove the CREG or CRBG assembly:

1. Remove the cover plate by loosening the eight front panel captive retainingscrews of the CREG (if fitted) and CRBG. The cover plate is located in themiddle of the front panels and covers both the CREG and the CRBG.

2. Partly remove the semi-rigid cable (and the T-adapter) attached to both

the CREG and the CRBG:

If the CREG is being replaced, loosen the lock nut of the CREG N typecoaxial connector and then remove the cable

If the CRBG is being replaced, loosen the lock nut of the CRBG N typecoaxial connector and then remove the cable.

3. Remove the N type connector from the T-adapter in the middle of thesemi-rigid cable. This connector is at the end of the semi-rigid cable that isconnected to the CRBG TX-filter.

4. Remove the four retaining screws and lock washers from the CREG or

CRBG assembly to be replaced, as appropriate.5. Carefully remove the CREG or CRBG assembly, as appropriate.

6. If the CRBG is being replaced, loosen the lock nut of the TX-filter connector(located at the top-rear of the CRBG) and remove the semi-rigid cable.

7. Go to ’Install the New CREG or CRBG’ in this section.

Install the New CREG orCRBG

To install the new CREG or CRBG assembly:

1. Carefully install the new CREG or CRBG assembly, as appropriate, inplace of the old one.

2. If the CRBG is being replaced, replace the semi-rigid cable and tighten thelock nut of the TX-filter connector (located at the top-rear of the CRBG).

3. Replace and tighten the four retaining screws and lock washers on the newCREG or CRBG assembly, as appropriate.

4. Replace and tighten the N type connector on the T-adapter in the middle ofthe semi-rigid cable. This connector is at the end of the semi-rigid cablethat is connected to the CRBG TX filter. Use a torque wrench set to 1 Nmto tighten the N type connector.

5. Replace the semi-rigid cable (and the T-adapter) to be attached to boththe CREG and the CRBG:

If the CREG is being replaced, tighten the lock nut of the CREG N typecoaxial connector using a torque wrench set to 1 Nm

If the CRBG is being replaced, tighten the lock nut of the CRBG N typecoaxial connector using a torque wrench set to 1 Nm.

6. Replace the cover plate and tighten the eight front panel captive retainingscrews of the CREG and CRBG.

7. If the CREG is being replaced, go to ’Reconnect the CREG Cables’ inthis section. If the CRBG is being replaced, go to ’Reconnect the CRBGCables’ in this section.

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Reconnect the CREGCables

If the CREG is being replaced, reconnect the cables:

1. Replace the following cables at the rear of the CREG:

One Extension Sub-D connector

One AMP connector.

2. Replace and tighten a maximum of four coaxial cables TX-5 - TX-8 removedfrom the front panel of the old CREG. Use a torque wrench set to 1 Nmto tighten the N type connectors.

3. Power up the CRBG by switching the ON/OFF toggle switch on the frontpanel of the CRBG to the ON position.

4. Check that the green ON LED is ON.

5. Ensure that the Q1/Local switch on the CRBG is set to the Local position.

6. Connect a VT100 terminal or a PC with a VT100 emulator to the Localconnector on the front of the CRBG.

7. Go to ’Perform a Global Park’ in this section.Reconnect the CRBG

CablesIf the CRBG is being replaced, reconnect the cables:

1. Replace the following cable at the rear of the CRBG:

Four Sub-D connectors Q1 IN, Q1 OUT, ’to SCFE’ , and Extension

Two mate-n-lock connectors LINE1 and LINE2

One AMP connector.

2. Replace and tighten the following coaxial cables removed from the frontpanel of the old CRBG:

One RTE connector (SMA type) using a torque wrench set to 1 Nm totighten the connector lock nut

One ANT OUT connector (7/16 type) using a torque wrench set to 25 Nmto tighten the connector lock nut

A maximum of four N type coaxial connectors TX-1 - TX-4 using a torquewrench set to 1 Nm to tighten the connector lock nuts

If fitted, one Local Sub-D connector.

3. Power up the CRBG by switching the ON/OFF toggle switch on the frontpanel of the CRBG to the ON position.

4. Check that the green ON LED is ON.

5. If a CREG is installed, ensure that the Q1/Local switch on the CRBG isset to the Local position.

6. If a CREG is installed, connect a VT100 terminal or a PC with a VT100emulator to the Local connector on the front of the CRBG.

7. Go to ’Perform a Global Park’ in this section.

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Perform a Global Park If a CREG is installed, perform a global park:

1. At the VT100 terminal:

Enter Y to the question Extension Yes/No?

Enter I to access the Installation menu

Enter G for global park.

2. If the Alarm UTP is displayed, initialize the CREG cavities with a 50 Ohmresistor load.

3. Go to ’Unlock (Initialize) MOs (SBLs)’ in this section.

Unlock (Initialize) MOs(SBLs)

To initialize the RA and BTS_TEL MOs (SBLs):

1. Switch the Q1/Local switch on the CRBG to the Q1 position.


3. Disconnect the VT100 terminal from the Local connector on the CRBG.

4. Using the BTS terminal, initialize RA.5. Using the BTS terminal, initialize BTS_TEL.

6. Using the BTS terminal, check that all SBLs are in traffic.



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3.24 Replace RTEThe following table shows RTE RIT part numbers.


RTED Radio Test Equipment Unit DCS 3BK 01653 AA

RTEG Radio Test Equipment Unit GSM 3BK 01264 AA

Table 43: RTE RIT Part Numbers









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Remove RTE To remove an RTE RIT:


2. Connect the BTS terminal to the MMI port on the SCFE in the MBSR.3. Using the BTS terminal, disable the associated RTE SBL.


5. Disconnect the RF cables from the front panel of the RTE in the MBSR.

6. Remove the retaining screws securing the RTE to the rack.

7. Carefully disengage the RTE from the backplane and fully withdraw itfrom the slot.


Replace RTE To replace an RTE RIT:

1. Push the replacement RTE fully into the empty slot ensuring that pinsand sockets are correctly aligned.


3. Reconnect the RTE front panel RF cables.


5. Using the BTS terminal, initialize the associated RTE SBL.




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3.25 Replace SACE, SCFEThe following table shows Alarm Collection and Control Function Entity RITpart numbers.


SACE Station Unit Alarm Collection Entity 3BK 05079 AA

SCFE Station Unit Control Function Entity 3BK 01217 AA

Table 44: Alarm Collection and Control Function Entity RIT Part Numbers



An efficient means of communication with the OMC-R operator, if you arereplacing an SCFE with the power off. The operator must lock (disable) andunlock (initialize) BTS_TEL and RA MOs (SBLs) when required.


If the SACE is replaced, there is no loss of telecommunications resources.All alarm collection by the SACE is lost

If the SCFE is hot-swapped (no power supply switched off), all BTSO&M functions are lost for a period of approximately 15 minutes. Notelecommunications resources are lost

If the SCFE is not hot-swapped, all telecommunications resources are lostwhen the RA and BTS_TEL MOs (SBLs) are locked (disabled).

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Remove SACE/SAFE To remove a Station Unit Alarm Collection or Control Function Entity RIT:


Hot-Swapping SCFE

Hot-swapping the SCFE when there is a defective BCCH CU can cause theBRSW to become crossed from the backup CU to the defective CU.Do not hot-swap the SCFE when there is a defective BCCH CU.

2. If you are hot-swapping the SCFE, or replacing the SACE, do not lock(disable) any MOs (SBLs). Go directly to Step 5 .If you are replacing the SCFE without hot-swapping, ask the OMC-Roperator to lock (disable) BTS_TEL. Tell the operator to enter a WTC = 3minutes to ensure an orderly shutdown of the BTS. Wait three minutesbefore continuing to the next step.

3. Ask the OMC-R operator to lock (disable) RA.

4. Remove the RIT retaining screws in the MBSR.




Replace SACE/SAFE To replace a Station Unit Alarm Collection or Control Function Entity RIT:




4. Ask the OMC-R operator to unlock (initialize) RA and then BTS_TELs if theywere locked (disabled). If you have replaced only the SACE, the replacementprocedure is now complete. Otherwise, continue to the next step.

5. Download the OMU software from the OMC-R. Refer to BTS OMU Software ( Section 4) for information on downloading OMU software.

6. Allow 15 minutes for the OMU software to be downloaded.

7. Check that front panel LEDs on the SCFE are toggling, indicating that theSCFE is fully operational.


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3.26 Replace/Test G2 BTS Smoke DetectorThis procedure tells you how to remove, replace and test the Smoke Detector inan MCO2, MCO4 or OBC3 cabinet.


A Hekatron Test Aerosol Type 918/5 (for testing)

A Hekatron Smoke Detector Type ORS 132 (for replacement).


3.26.1 Replace G2 BTS Smoke Detector

To replace the smoke detector:


2. Twist the smoke detector anti-clockwise and withdraw it downwards. Thesmoke detector is located under the top of the cabinet.

3. Insert the replacement smoke detector and twist it clockwise, and thenperform the procedure in Test G2 BTS Smoke Detector (Section 3.26.2)to test it.

3.26.2 Test G2 BTS Smoke Detector

To test the smoke detector:

1. If necessary, open the front door of the BTS. (Refer to Section Handle Cabinets (Section 3.1) for more information).

2. Direct the nozzle of the test aerosol towards the smoke detector and pressthe nozzle for three seconds. The smoke detector is located under thetop of the cabinet.

3. If the red LED on the detector illuminates within a period of 15 seconds, godirectly to Step 5 . If the LED fails to illuminate after 15 seconds, repeatStep 2 and then go to Step 4 .

4. If the red LED illuminates within a period of 15 seconds, go directly to Step 5 If the LED still fails to illuminate, replace the smoke detector according tothe procedure in Replace G2 BTS Smoke Detector (Section 3.26.1) , andthen restart this test procedure.If the LED fails to illuminate once more, an electrical fault is indicated.Report the fault to the next level of support.


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3.27 Replace STSE, STSP, STSRThe following table shows Timing and Switching Entity RIT part numbers.


STSE Station Unit Timing and Switching Entity 3BK 01252 AA

STSE Station Unit Timing and Switching Entity 3BK 01252 AB

STSP Station Unit Timing and Switching Entity PCM 3BK 05980 AA

STSR Station Unit Timing and Switching EntityRepeater

3BK 05086 AA

Table 45: Timing and Switching Entity RIT Part Numbers


A medium flathead screwdriver for cabling








If there is SU redundancy, there is no loss of telecommunications resources

If there is no SU redundancy, all telecommunications resources are lostwhen BTS_TEL is locked (disabled).

Matching STSE Variants .If there is SU redundancy, the replacement STSE must have the same variantas the removed STSE. For example, an STSE with a variant AA must be pairedwith a redundant STSE that also has a variant AA.

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Remove RIT To remove a Timing and Switching Entity RIT:



3. If there is SU redundancy, go directly to Step 4 . If there is no SUredundancy, use the BTS terminal to disable BTS_TEL. Enter a WTC =3 minutes to ensure an orderly shutdown of the BTS. Wait three minutesbefore continuing to the next step.

4. Using the BTS terminal, disable the associated FHU and CLLK SBLs.


6. If there is a front panel cable, disconnect it from the RIT in the MBSR.

7. Remove the RIT retaining screws in the MBSR.


Backplane Damage .Do not use excessive force when inserting the RIT.

Replace RIT To replace a Timing and Switching Entity RIT:


2. Replace and tighten the RIT retaining screws.

3. If applicable, reconnect the front panel cable.

4. Wait a maximum of 15 minutes while the OCXO warms up for the oven

alarm to disappear.5. Adjust the frequency of the STSE. Refer to Adjust STSE Frequency (Section

3.2) for more information.


7. Using the BTS terminal, initialize the FHU and CLLK SBLs and thenBTS_TEL, if this was disabled.




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3.28 Replace/Test TMA/RMCThe following table shows RMC and TMA RIT part numbers.


RMCD Receiver Multicoupler DCS 3BK 06318 AA

RMCG Receiver Multicoupler GSM 3BK 01291 AAA

RMCG Receiver Multicoupler GSM 3BK 01291 ABB

TMAD Tower Mounted Amplifier DCS 3BK 06317 AA

TMAG Tower Mounted Amplifier GSM 3BK 01292 AAA

TMAG Tower Mounted Amplifier GSM 3BK 01292 ABB

Table 46: TMA and RMC RIT Part Numbers


A spectrum analyzer (HP 8593A) and a two-way splitter/combiner forGSM (or similar)


A small flathead screwdriver


Suitable weather-proof blanking caps for the RF cable connectors and theRF sockets of the TMAG/TMAD assembly







Matching TMA and RMC Variants .The variant of the TMA must match that of the RMC. For example, a TMAG withvariant AAA can only be used with an RMCG with variant AAA.Always check the equipment labels to ensure that the variants match.

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If the BTS is equipped with antenna diversity there is no loss oftelecommunications resources. All telecommunications resources areautomatically diverted to the diversity antenna

If there is no antenna diversity, the BTS_TEL and RA MOs (SBLs) must belocked (disabled) and all telecommunications resources are lost.

3.28.1 Replace TMA

Remove TMA To remove a TMA RIT:



3. If there is antenna diversity go directly to Step 5 . If there is no antenna

diversity, use the BTS terminal to disable BTS_TEL. Enter a WTC = 3minutes to ensure an orderly shutdown of the BTS. Wait three minutesbefore continuing to the next step.



6. Loosen the lock nuts and disconnect the RF input and output cables onthe underside of the TMAD/TMAG.

7. Cover the RF connectors using the weather proof blanking caps to preventmoisture or contamination.

8. Remove the four bolts that secure the TMAD/TMAG assembly to the tower.

9. Carefully withdraw the TMAG/TMAD assembly from the antenna tower, andplace in a polythene bag.

Attach ReplacementTMA

To replace a TMA RIT:

1. Fix the replacement TMAG/TMAD assembly to the antenna tower usingthe four bolts.

2. Remove the blanking caps from the RF connectors.

3. Connect the RF cables to the RF input and output sockets on the undersideof the TMAG/TMAD assembly.Use the torque wrench set to 1 Nm, to tighten the lock nuts of the N typeand the SMA type connectors.

4. Using the BTS terminal, initialize RA and then BTS_TEL, if they weredisabled earlier.


6. Go to Adjust RMC Gain (Section 3.28.3) to adjust the gain in theRMCG/RMCD.

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3.28.2 Replace RMC

Remove RMC To remove an RMC RIT:



3. If there is antenna diversity go directly to Step 5 . If there is no antennadiversity, use the BTS terminal to disable BTS_TEL. Enter a WTC = 3minutes to ensure an orderly shutdown of the BTS. Wait three minutesbefore continuing to the next step.



6. Disconnect the front panel ANT and TEST RF cables, and the SMA typecoaxial RF cables from the RMC in the MBSR. Note the positions of thecoaxial RF cables for reconnection.

7. Remove the RMC retaining screws.

8. Carefully disengage the RMC from the backplane and fully withdraw itfrom the slot.

Replace RMC To replace an RMC RIT:

1. Set the jumpers/DIP switch on the replacement RMC to match the faultyRMC.There are two versions of the RMCG:

An early version is shown in Figure 15 . This is equipped with three jumpers. Table 47 lists the correct positions for the jumpers

A later version is shown in Figure 16 . This is equipped with a DIP switch.

The figure shows the correct positions for the switches.

JP2

JP1

A B C

JP3

A B C

A B CComponent−SideView

Figure 15: RMCG Early Version

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Side View

TMA

LOOP

RU

OFF

OFF

OFF

Figure 16: RMCG Later Version

Backplane Damage .Do not use excessive force when inserting the RIT.

2. Push the replacement RMC fully into the empty slot ensuring that pinsand sockets are correctly aligned.


4. Check that the two green DC and CTB LEDs are ON.

5. Reconnect the ANT and TEST RF cables, and the SMA type coaxial RFcables. Use the torque wrench set to 1 Nm, to tighten the lock nuts of the Ntype and the SMA type connectors.

6. Using the BTS terminal, initialize RA and then BTS_TEL, if they weredisabled.

7. Go to Adjust RMC Gain (Section 3.28.3) to adjust the gain of the RMC.

JumperField

JumperPosition Mode Remarks

AB Loop alarm alwayssuppressed

Use this mode in the case of an antenna without aDC-loop.

JP1

BC Loop alarm enabled Normal mode; if the DC-loop is open, the loop alarmis reported.

AB PERU alarm enabled Normal mode; if the PERU alarm is active, it is reported.The use of ALARM_CTRL_LNA is possible.

JP2

BC PERU alarm alwaysactive

Not used.

AB RTMA alarm enabled Normal mode; if the RTMA alarm is active, it is reported.The use of ALARM_CTRL_LNA is possible.

JP3

BC RTMA alarm alwaysactive

Not used.

Table 47: RMCG Jumper Settings

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3.28.3 Adjust RMC Gain

To adjust the gain of an RMC:


2. If you use a Power Meter, it must have a suitable narrow band filter forthe BTS as follows:

GSM 900: use a 700 MHz +/-5 MHz filter

GSM 1800: use a 1485 MHz +/-15 MHz filter.

3. Attach the RF probes of the test equipment to one of the eight RF coaxialconnectors (SMA) type on the RMC front panel, to measure the pilot tone.You may have to disconnect one of the SMA cables if there is not a freesocket.

4. Using a flathead screwdriver, adjust the Gain control on the RMC front

panel to give a pilot tone level of:-21 dBm at 700 MHz for an RMCG (GSM 900 systems)

-16 dBm at 1486 MHz for an RMCD (GSM 1800 systems).

For GSM 900 systems, the temperatures of the RMCG and the TMAG mustbe taken into account when setting the tone level. The following table showsthe required tone level for different temperatures, taking into account solarheating of the TMAG. It is possible for the TMAG to reach 58 C for an airtemperature of 40 C if it is exposed to the sun long enough.


-10 C [le ] T RMCG [le ] +30 C-33 C [le ] T TMAG[le ] -10 C

-22.1 dBm

-10 C [le ] T RMCG [le ] +30 C -10 C [le ] T TMAG[le ] +70 C

-21.0 dBm

T RMCG [ge ] +30 C -33 C [le ] T TMAG [le ] +50 C -21.0 dBm

T RMCG [ge ] +30 C +50 C [le ] T TMAG [le ] +70 C -21.2 dBm

Table 48: RMCG Pilot Tone Level at Different Temperatures

5. Disconnect the RF probes. If you had to disconnect one of the RF coaxialcable (SMA) type connectors, reconnect it and tighten the lock nut, usingthe torque wrench set to 1 Nm.





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3.29 Replace G2 BTS TransmitterThe following table shows Transmitter RIT part numbers.


TXDH Transmitter DCS 25 W 3BK 06067 AA

TXDM Transmitter DCS 15 W 3BK 01643 AA

TXGH Transmitter GSM 50 W 3BK 01165 AA

TXGM Transmitter GSM 30 W 3BK 01149 AA

TXPH Transmitter PCS 25 W 3BK 06817 AA

Table 49: G2 BTS Transmitter RIT Part Numbers









Impact on System All telecommunications resources are lost if the last CU MO(SBL) is locked (disabled). Otherwise, eight time slots are lost.

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Remove Transmitter To remove a Transmitter RIT:






6. Disconnect the TX cable from the faulty Transmitter in the MBSR or theFCSR.

7. Remove the Transmitter retaining screws.

8. Carefully disengage the Transmitter from the backplane and fully withdraw itfrom the slot.


Replace Transmitter To replace a Transmitter RIT:

1. Push the replacement Transmitter fully into the empty slot ensuring that pinsand sockets are correctly aligned.

2. Replace and tighten the Transmitter retaining screws.

3. Reconnect the TX cable.

4. Disconnect the anti-static wrist strap.5. Using the BTS terminal, initialize the associated CU SBL and then BTS_TEL,

if it was disabled.




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3.30 Replace/Test G2 BTS Water Detection Float SwitchThis procedure tells you how to remove, replace and test the water detectionfloat switch in an MCO2, MCO4 or OBC3 cabinet.

Tools and Materials You must have a torque wrench with a 27 mm adaptor.


3.30.1 Replace G2 BTS Water Detection Float Switch

To replace the water detection float switch:


2. Disconnect the alarm cable from the float switch. The float switch is locatedat the bottom of the cabinet.

3. Remove the fixing nut and the washers from the float switch, and thenremove it from the cabinet mounting hole.

4. Insert the replacement float switch in the cabinet mounting hole. Twist thefloat switch housing around in the hole, until the freedom of movement of thefloat arm is vertically downwards from the horizontal.

5. Then replace the washers and the fixing nut.

6. Reconnect the alarm cable to the float switch.

7. Now go to Test G2 BTS Water Detection Float Switch (Section 3.30.2) totest the float switch.

3.30.2 Test G2 BTS Water Detection Float Switch

To test the water detection float switch:1. If necessary, open the front door of the BTS. (Refer to Handle Cabinets

( Section 3.1) for more information).

2. Lift the water detection float arm gently until it is horizontal, and confirm thatit falls back to its original position when released. The float is located atthe bottom of the cabinet.


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3.31 Replace WBCThe following table shows WBC RIT part numbers.


DUPD Wideband Combiner Two Carriers withIntegrated Duplexer DCS

3BK 01634 AAA

DUPG Wideband Combiner Two Carriers withIntegrated Duplexer GSM

3BK 01633 AAA

DUPP Wideband Combiner Two Carriers withIntegrated Duplexer PCS

3BK 06820 AAA

WB2D Wideband Combiner Two Carriers DCS 3BK 01628 AAA

WB2D Wideband Combiner Two Carriers DCS 3BK 01628 AAB

WB2G Wideband Combiner Two Carriers GSM 3BK 01626 AAA

WB2G Wideband Combiner Two Carriers GSM 3BK 01626 AAB

Table 50: WBC RIT Part Numbers












Impact on System All telecommunications resources are lost when theBTS_TEL and RA MOs (SBLs) are locked (disabled).

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Remove WBC To remove a WBC RIT:



3. Use the BTS terminal to disable BTS_TEL. Enter a WTC = 3 minutesto ensure an orderly shutdown of the BTS. Wait three minutes beforecontinuing to the next step.



6. Disconnect all coaxial RF cables on the front panel of the WBC, carefullynoting their positions for reconnection.

7. Disconnect the Sub-D and AMP cables at the rear of the WBC. (InCBE1/CBE2 cabinets, access to the WBC can be made via the left handside of the rack, after sliding it forward).

8. Remove the four retaining screws and then the WBC from the rack.Replace WBC To replace a WBC RIT:

1. Insert the replacement WBC and then replace and tighten the four retainingscrews.

2. Reconnect the Sub-D and AMP cables at the rear of the WBC.

3. Reconnect the WBC front panel RF cables, using the torque wrench totighten the lock nuts of the:

N type and the SMA type connectors, with a torque setting of 1 Nm

7/16 type connectors, with a torque setting of 25 Nm.

4. Slide back the movable rack (if appropriate).


6. Using the BTS terminal, initialize RA and then BTS_TEL.




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4 BTS OMU Software

This chapter tells you how to reload the OMU software in a BTS.

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4.1 Before You Start to Reload the OMURead this section before starting the procedures in this chapter.

Prerequisites You must have read the Safety Rules and Precautions (Section 1) before performing any reloading procedures.

Tools and Materials Unless you are reloading by using the OMU [ Reset ]button, you must have one of the following:

A BTS terminal connected via an RS-232 asynchronous communicationlink cable to the MMI port on the:

SCFE in the G2 BTS cabinet

OMUA in the G1 BTS cabinet.

Refer to the BTS Terminal User Guide for more information.

A BSC terminal connected to the BSC via one of the following:

An RS-232 asynchronous communication link cable

An X.25 synchronous communication link cable.

Refer to the BSC Terminal User Guide for more information.



The BTS is still available during the reset and subsequent reload of OMUsoftware. Although the OMU is not available, calls can be set up andcleared in normal operating conditions

There is no significant difference in system behavior between the four

different ways of performing the reload action. The OMC-R is informed ofthe BTS state changes.

Restrictions None.

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