Page 1 Ericsson GSM System RBS 2101 Maintenance Manual LZN 302 48 R6A...
Page 4 Maintenance Manual Due to continued progress in methodology, design and manufacturing the contents of this document are subject to revision without notice. 2 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 5: Table Of Contents
4.3 Fault Analysis from OMC ................ 38 4.4 RBS Maintenance Process..............40 4.5 Fault Cases....................41 5 Handling of the RBS during Maintenance..........45 5.1 Numbering of RUs...................45 LZN 302 48 Uen Rev R6A 3 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 6 6.20 External Alarms ..................106 6.21 Fan......................112 6.22 Heater ....................114 6.23 Heat Exchanger External Fan ..............124 6.24 Heat Exchanger Internal Fan ............... 130 4 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 7 7.14 DC Filter ....................203 7.15 DXU ....................... 206 7.16 DXU/ECU Backplane ................208 7.17 ECU ....................... 210 7.18 Fans ......................211 7.19 FCU......................211 LZN 302 48 Uen Rev R6A 5 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 8 10 Fault Code List....................253 10.1 Terminology ................... 253 10.2 Decoding of Fault Maps ................ 255 10.3 SO Fault Lists..................256 10.4 AO Fault Lists..................262 6 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 9 14 Positioning of RUs ..................299 15 Frequency Lists...................301 15.1 GSM 900....................301 15.2 GSM 1800....................303 15.3 GSM 1900....................305 16 Country Codes .................... 309 17 Glossary.......................317 LZN 302 48 Uen Rev R6A 7 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 11: Preface
• Short description • Recommended target group • Product number Library Overview LZN 302 73 LZN 302 48 Uen Rev R6A 9 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 12: Target Group
The required knowledge of the equipment can be acquired by following the CME 20 training path for RBS 2000 ﬁeld technicians. Call an Ericsson Training Centre for a complete training plan. How to Use this Manual Detailed information about the use of this manual and how to perform maintenance in the correct order, will be found in the chapter "Maintenance Process Overview".
Page 13: Denominations Of Rus
The names of the various RUs are given in the chapter "Positioning of RUs". Regarding the ACCU, BDM/IDM and climate unit, different versions exist. In this manual, the following denominations have been used. LZN 302 48 Uen Rev R6A 11 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 14 • There are three horisontal connectors at the rear of the BDM/ IDM. Climate unit The climate unit for RBS 2101 is either an air conditioner or a heat exchanger. The heat exchanger exists in two different variants. Use the following list to distinguish the different variants of climate units from...
Page 15: Release History
General update of the manual • Many ﬁgures have been updated to better correspond to the text. Update of the chapter "Tools and Instruments" LZN 302 48 Uen Rev R6A 13 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 16 Update of the chapter "Fault Localisation" • The following section has been added: − "PSU DC Cable" • The following sections have been updated: − "Battery" 14 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 17 The Fault Code List has been updated according to SW release RBS 2000 R7D. Update of the chapter "Cable Connections" • The complete chapter has been updated. LZN 302 48 Uen Rev R6A 15 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 19: Safety Instructions
For certain work, additional training or special training may be required. For more precise information on the amount and content of the general and/or special training required for work on Ericsson products or systems, please contact the supervisor or the local Ericsson company. Warnings Warnings are used to indicate hazardous activities.
Page 20: Notes
Notes Note: Notes are used to call the reader’s attention to key points that might otherwise be overlooked. 18 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 21: Beryllium Oxide (Beo)
Do not store components and washers loose. Do not ﬁle or machine them in any way. Do not apply heat except when the components are clamped in a heat sink application. LZN 302 48 Uen Rev R6A 19 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 22 • Handle with gloves or cloth when removing heat sink washers from packaging and mounting them into place in the equipment. 20 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 23: Electrical Hazards
• Remove wrist watches, rings, bracelets, etc. • Switch off the power if the cabinet is damp inside. LZN 302 48 Uen Rev R6A 21 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 24 • Always use eye protectors (goggles) when drilling. Flying chips and dust may get into your eyes. 22 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 25 The resistance value is low enough to discharge the electrostatic voltage. Never replace the cable with any other cable. The ESD wrist strap must be connected to earth. Ericsson recommends wrist strap LYB 250 01/14. Storing and Transporting printed board assemblies and IC Components Use the original packaging.
Page 26: Batteries
Use all the required PPE (Personal Protective Equipment) such as: • Rubber gloves and aprons. 24 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 27 Check that the batteries have not leaked. • If the batteries have leaked, see the section Hazardous Waste Material from Leaks. LZN 302 48 Uen Rev R6A 25 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 28: Working At Heights
Do not overload the ladder. The following types of ladders must be guyed or otherwise secured • Leaning ladder longer than 5m. 26 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 29 Never prop up a ladder with boxes, stones or the like. • Extend the ladder completely. • Check that all four anti-slipping treads are ﬁrmly positioned on the base. LZN 302 48 Uen Rev R6A 27 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 30: Radio Frequency Radiation
Radio frequency (RF) radiation from antenna systems can endanger your health. Co-ordinate with all mast users to switch off the transmitters when working with, or near, antennas. 28 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 31: Other Hazards
Overloading, or wrong use of lifting devices in other ways, can have catastrophic consequences. LZN 302 48 Uen Rev R6A 29 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 32 Radio Base Station. Sharp Edges WARNING Wear protective gloves when handling the equipment. There may be sharp metal edges. 30 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 33: Tools And Instruments
Only for DXU-03 (including cables) The OMT is used for installation, installation testing, site acceptance and maintenance of the RBS 2000 system. LZN 302 48 Uen Rev R6A 31 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 34: Personal Tool Kit, Ltt 601 042/1
Speciﬁcation Tool case ST 8 Assortment box Assortment box Tray Plast teknik (106/32) 9170-0104 Soldering iron tip 9170-0500 Soldering iron tip 32 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 35 Needle ﬁle set 7001-0103 Knife 9 RX Knife blade TCS 38 Magnetic screwdriver 33576005 7076-0046 Bits Bits 7076-0202 Bits 7076-0400 Bits 7076-0509 LZN 302 48 Uen Rev R6A 33 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 36: Special Tools
Compressor speciﬁcations for preventive maintenance The table below lists the speciﬁcations for the air compressor needed to perform cleaning during preventive maintenance routines. 34 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 37: Tents
Instructions on how to raise the tent can be found in: General Installation Instructions LZN 302 49 02_0188B Figure 11 Recommended tent LYA 175 101 LZN 302 48 Uen Rev R6A 35 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 38: References
Parts Catalogue Product No. Description LZN 302 78 Cabinet Assembly and Extension Manual for RBS 2101, RBS 2102, RBS 2103, RBS 2202 LZN 302 92 Spare Parts Catalogue for RBS 2101 36 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 —...
Page 39: Maintenance Process Overview
Statistics are collected on an MO basis in the BSC. Examples are the number of call setup attempts or the number of abnormally terminated calls. LZN 302 48 Uen Rev R6A 37 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 40: Fault Handling Workflow
This section describes very brieﬂy a typical fault analysis process, performed from an OMC. It describes procedures that have to be done before sending a ﬁeld technician to the site. 38 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 41 If the fault situation is unclear, site history must be included; for example, whether the same type of fault has been detected and repaired a few weeks earlier. LZN 302 48 Uen Rev R6A 39 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 42: Rbs Maintenance Process
Read the ﬂowchart(s) in the chapter "Fault Localisation" that concern the faulty unit(s). This is done to: • Select the spare parts and tools required at the RBS site. 40 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 43: Fault Cases
Unambiguous indication with an RU map only. • Unit that is unambiguously indicated, but consists of several replaceable parts. • Logical RU indicated. LZN 302 48 Uen Rev R6A 41 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 44 Local bus, X bus, Timing bus, and Environment. Method of localisation A systematic order of replacement is used to determine the unit that has generated the fault. 42 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 47: Handling Of The Rbs During Maintenance
RBS, otherwise the speciﬁed functions of that unit cannot be guaranteed. LZN 302 48 Uen Rev R6A 45 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 48: General Instructions For Replacement Of An Ru
To be able to restart in a correct way, the TRU must have been out of power for at least three seconds. 46 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 49: Cable Connections
Fit the wrench key to the SMA connector as shown below. • Rotate the wrench handle clockwise until the wrench clutch begins to slip This results in the correct torque setting. LZN 302 48 Uen Rev R6A 47 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 50: About The Locking Mechanism
ﬁts into the mounting base, but the mounting base key only ﬁts into the locking mechanism of the mounting base. Therefore, do not mix up the locking mechanisms. 48 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 51: Fault Localisation
Only a qualiﬁed and authorized electrician is permitted to install or modify the electrical installation. Note: Use only Ericsson recommended fuses of the correct voltage and amperage ratings as replacements. Use of any other type of fuses could cause serious damage to the RBS, ﬁre or personnel injury and affect RBS product...
Page 52 ** Refer to the Spare Parts Catalogue for more information about different versions of the ACCU. Spare Parts Catalogue LZN 302 92 50 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 55 "Corrective Action". (10) BS fault indicator status? There are two methods to determine whether the fault has been cleared. LZN 302 48 Uen Rev R6A 53 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 56 After replacement of the climate unit: − Follow the instructions given in the section "Climate System Test". − Proceed to the section "Before Leaving the Site". 54 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 57: Air Conditioner
45 Check voltage to pressostat Check voltage to compressor 02_0116E Figure 20 Air conditioner (part 1 of 2) LZN 302 48 Uen Rev R6A 55 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 58 Use the OMT to monitor the following: Use the monitor "Display Faulty RUs" in the OMT to list all RUs that are faulty. 56 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 59 If the internal fan is not running, check that the Climate Unit circuit breaker on the front of the ACCU has not tripped. LZN 302 48 Uen Rev R6A 57 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 60 Remove the connector for the pressostat and measure the voltage on the connector on the CCU. Refer to the picture below. 58 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 61 The fault is either in the compressor, pressostat, or caused by a loss of coolant and cannot be repaired except by a qualiﬁed refrigeration LZN 302 48 Uen Rev R6A 59 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 62: Alna A, Alna B, Alna/Tma A And , Alna/Tma B
ALNA is used. When a TMA is used, it shall be treated in the same way as the ALNA in the procedure below. 60 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 63 Several instructions in this section requires the OMT. For further information on the use of OMT, see: OMT User’s Manual LZN 302 01 LZN 302 48 Uen Rev R6A 61 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 64 Measure the other RX feeder inlet on the CDU. CDU 1800 and 1900 MHz Multimeter 02_0050C Figure 26 ALNA DC power supply measurement 62 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 65 For instructions on how to perform a TDR measurement, refer to: RBS Implementation and Integration Manual LZN 302 48 Uen Rev R6A 63 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 66 "Test Call" in the chapter "Test after Corrective Action". Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". 64 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 68 Use the monitor "Display Faulty RUs" in the OMT to list all RUs that are faulty. Use the monitor "Fault Status" in the OMT to display the type of fault. 66 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 69 Replace or repair the faulty auxilliary equipment. Proceed to step (12). (7) TX not enabled? Check all TRUs in the cabinet(s). LZN 302 48 Uen Rev R6A 67 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 70 For further information, see the section "TX Antenna Feeders" in the chapter "Corrective Action". Is the antenna OK? • Yes: Proceed to step (16). • No: Proceed to step (13). 68 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 71: Battery
"Test after Corrective Action". Battery The fault localisation for "Battery" is divided into two subsections: • External Batteries • Internal Batteries LZN 302 48 Uen Rev R6A 69 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 72 Voltage to BDM battery system BS fault indicator Replace DC filter status? Replace BDM P002316 Figure 29 External batteries (part 1 of 2) 70 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 73 (3) Check DC voltage from batteries Open the mounting base, and measure the DC voltage from the external batteries, refer to Figure 31 on page 72. LZN 302 48 Uen Rev R6A 71 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 74 OMT to list all RUs that are faulty. (6) Fault localisation on external battery system Refer to local documentation to perform fault localisation on the external battery system. 72 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 75 (9) Replace DC ﬁlter Replace the DC ﬁlter according to instructions in the section "DC Filter" in the chapter "Corrective Action". LZN 302 48 Uen Rev R6A 73 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 76 FSC. (15) Test after corrective action Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". 74 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 77 The monitor also determines whether the fault is in the master cabinet, or in an extension cabinet (if connected). LZN 302 48 Uen Rev R6A 75 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 78: Bdm/Idm
OMT must be used to determine whether the faulty BDM lies in the master or the extension cabinet. 76 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 79: Cab Hlin Cable
OMT, see: OMT User’s Manual LZN 302 01 (1) Locate the faulty cabinet Locate the faulty cabinet according to work order information. LZN 302 48 Uen Rev R6A 77 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 80 The ﬁrst method is to inspect the yellow indicator labelled BS fault on the DXU. BS fault indicator status? 78 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 81: Cdu Bus
Replace the first TRU BS fault indicator status? Replace the second TRU 08_0116B Figure 35 CDU bus (part 1 of 2) LZN 302 48 Uen Rev R6A 79 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 82 CDU bus 1 is connected to CDU 1. • CDU bus 2 is connected to CDU 2. • CDU bus 3 is connected to CDU 3. 80 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 83 There are two methods to determine whether the fault has been cleared. The ﬁrst method is to inspect the yellow indicator labelled BS fault on the DXU. BS fault indicator status? LZN 302 48 Uen Rev R6A 81 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 84 OMT to list all RUs that are faulty. (11) Replace backplane and CDU bus The fault is located in the backplane or in the CDU bus. 82 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 85: Cdu Hlout Hlin Cable
This procedure is common for the two RUs CDU HLOUT HLIN Cable and CAB HLIN Cable. CAB HLIN Cable connects the master and the extension cabinet. LZN 302 48 Uen Rev R6A 83 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 86 Replace the next HL cable Cabinet OK? Replace the last HL cable 65_0116A Figure 37 CDU HLOUT HLIN cable (part 1 of 2) 84 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 87 (0, 1, 2…) one by one. For example, if number 0 is faulty, it means that the faulty cable is connected to the HLOUT connector on CDU 0. LZN 302 48 Uen Rev R6A 85 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 88 Has the fault disappeared and is the RBS free from other faults? • No: Proceed to step (10). • Yes: Proceed to step (15). 86 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 89: Cdu Rx In Cable
The fault handling procedure is common for the DPX RXIN and CDU RX in cables. See also the section "CDU-C+" in the chapter "Cable Connections". LZN 302 48 Uen Rev R6A 87 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 90 "Fault Status CDU RX IN CABLE-#1" is found. For example, if CDU RX IN CABLE 2 is faulty, it means that the faulty cable is located on CDU 2. 88 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 91 Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". If the CDU has been replaced, a test call has also to be made. LZN 302 48 Uen Rev R6A 89 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 92: Cdu-Tru Pfwd Cable And Cdu-Tru Prefl Cable
BS fault indicator status? Contact the supervisor Test after corrective action 50_0116A Figure 41 CDU-TRU PFWD and PREFL cable (part 2 of 2) 90 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 93 The ﬁrst method is to inspect the yellow indicator labelled BS fault on the DXU. BS fault indicator status? • Off: Proceed to step (10). No fault is detected in the RBS. LZN 302 48 Uen Rev R6A 91 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 94 Over TRUs connected to the CDU, if that unit was replaced.) Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". 92 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 95: Cdu-Tru Rxa Cable And Cdu-Tru Rxb Cable
Replace the cable BS fault indicator status? Replace TRU 11_0116B Figure 42 CDU-TRU RXA and RXB cable (part 1 of 2) LZN 302 48 Uen Rev R6A 93 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 96 The TRXC number is converted according to the information below. • TRXC 0 = TRU 1 • TRXC 1 = TRU 2 • TRXC 2 = TRU 3 94 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 97 There are two methods to determine whether the fault has been cleared. The ﬁrst method is to inspect the yellow indicator labelled BS fault on the DXU. BS fault indicator status? LZN 302 48 Uen Rev R6A 95 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 98: Dc/Dc Converter
Figure 44 DC/DC converter Note: Several instructions in this section requires the OMT. For further information on the use of OMT, see: 96 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 99: Dpx Rxin Cable
Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". 6.16 DPX RXIN Cable Refer to the section "CDU RX in Cable", Section 6.12 on page 87. LZN 302 48 Uen Rev R6A 97 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 100: Dxu
Use the window "Display Status" to list faults in the DXU. (3) Sync fault? (VCO fault?) Check for any of the following two alarms: 98 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 101 Off: Proceed to step (10). No fault is detected in the RBS. • On: Proceed to step (9). One or more faults are detected in the RBS. LZN 302 48 Uen Rev R6A 99 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 102 "Test Call" in the chapter "Test after Corrective Action". Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". 100 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 103: Ecu
OMT, see: OMT User’s Manual LZN 302 01 (1) Locate the faulty cabinet Locate the faulty cabinet according to work order information. LZN 302 48 Uen Rev R6A 101 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 104 (7) Fault indicator status? The red indicator labelled Fault on the ECU indicates the fault status of the unit. Fault indicator status? 102 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 105 OMT to list all RUs that are faulty. (10) Contact the supervisor Contact the supervisor or manager who will take further action, for example, to consult an FSC. LZN 302 48 Uen Rev R6A 103 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 106: Environment
3 ECU, see Section 6.18 on page 101 Fault: 12 DC Voltage Out Of Range Note: This fault is valid only for master cabinet. 104 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 107 3 Battery, see Section 6.6 on page 69 4 BDM/IDM, see Section 6.7 on page 76 5 ECU, see Section 6.18 on page 101 LZN 302 48 Uen Rev R6A 105 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 108: External Alarms
An alarm is not active in the BSC when it should be. This can happen where a closed sensor circuit should indicate an alarm. 106 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 109 Alarm indicator status? Replace the primary protectors Alarm indicator status? Check the sensor 15_0116C Figure 47 External alarms (part 1 of 2) LZN 302 48 Uen Rev R6A 107 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 110 The secondary protectors are located in the EACU. See the ﬁgure below. Open the door of the mounting base. Replace the secondary protector concerned. 108 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 111 The yellow indicator labelled External alarm indicates that one or more alarms are activated. The External alarm indicator is located on the DXU. External alarm indicator status? LZN 302 48 Uen Rev R6A 109 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 112 DXU goes off, there is probably something wrong with the external alarm sensor cables. Otherwise the DXU cables may be faulty. Change the faulty cable(s). 110 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 113 DXU is lit. (11) Contact the supervisor Contact the supervisor or manager who will take further action, for example, to consult an FSC. LZN 302 48 Uen Rev R6A 111 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 114: Fan
OMT, see: OMT User’s Manual LZN 302 01 (1) Locate the faulty cabinet Locate the faulty cabinet according to work order information. 112 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 115 OMT to list all RUs that are faulty. (7) Contact the supervisor Contact the supervisor or manager who will take further action, for example, to consult an FSC. LZN 302 48 Uen Rev R6A 113 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 116: Heater
Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". 6.22 Heater 6.22.1 Air Conditioner Version Figure 52 Heater, air conditioner version (part 1 of 2) 114 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 117 ﬂow path coming from the heater to test for an increase in the air temperature. (4) Passed? Was the climate test passed successfully? LZN 302 48 Uen Rev R6A 115 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 118 The heater cannot be replaced in this climate unit. Replace the entire climate unit according to the section "Air Conditioner" in the chapter "Corrective Action". 116 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 119 OMT to list all RUs that are faulty. (14) Contact the supervisor Contact the supervisor or manager who will take further action, for example, to consult an FSC. LZN 302 48 Uen Rev R6A 117 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 120 Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". 6.22.2 Heat Exchanger Version Figure 54 Heater, heat exchanger version (part 1 of 2) 118 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 121 Several instructions in this section requires the OMT. For further information on the use of OMT, see: OMT User’s Manual LZN 302 01 LZN 302 48 Uen Rev R6A 119 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 122 • Water will leak through the screw holes into the sub- cabinet and short out the DXU/ECU backplane to the metal cabinet. This may cause severe damage to the RBS. 120 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 123 CCU, measurement of AC power to heater (9) AC from CCU? Is the AC voltage from the CCU to the heater correct? LZN 302 48 Uen Rev R6A 121 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 124 Off: Proceed to step (20). No fault is detected in the RBS. • On: Proceed to step (17). One or more faults are detected in the RBS. 122 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 125 FSC. (20) Test after corrective action Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". LZN 302 48 Uen Rev R6A 123 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 126: Heat Exchanger External Fan
Fault Localisation 6.23 Heat Exchanger External Fan Figure 57 Heat exchanger external fans (part 1 of 2) 124 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 127 The monitor also determines whether the fault is in the master cabinet, or in an extension cabinet (if connected). LZN 302 48 Uen Rev R6A 125 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 128 AC mains supply on the site. Refer to the ﬁgure below. If the voltage reading is OK, replace the control and power cable to the external fan cassette. 126 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 129 Refer to ﬁgure below. If the voltage reading is OK, replace the control and power cable to the external fan cassette. LZN 302 48 Uen Rev R6A 127 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 130 Only the climate unit tester can determine if either an internal or external fan is too slow or too fast. 128 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 131 FSC. (16) Test after corrective action Proceed with the section "Climate System Test" in the chapter "Test after Corrective Action". LZN 302 48 Uen Rev R6A 129 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 132: Heat Exchanger Internal Fan
Proceed with the section "Before Leaving the Site" in the chapter "Test after Corrective Action". 6.24 Heat Exchanger Internal Fan Figure 61 Heat exchanger internal fans (part 1 of 2) 130 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 133 The monitor also determines whether the fault is in the master cabinet, or in an extension cabinet (if connected). LZN 302 48 Uen Rev R6A 131 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 134 AC mains supply on the site. Refer to the drawing of the CCU interface below. If the voltage reading is OK, replace the control and power cable to the internal fan. 132 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 135 CCU interface below. If the voltage reading is OK, replace the control and power cable to the internal fan. LZN 302 48 Uen Rev R6A 133 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 136 Perform the climate test according to instructions in the section "Climate System Test" in the chapter "Test after Corrective Action". 134 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 137 Proceed with the section "Climate System Test" in the chapter "Test after Corrective Action". Proceed with the section "Before Leaving the Site" in the chapter "Test after Corrective Action". LZN 302 48 Uen Rev R6A 135 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 138: Humidity Sensor
There are two methods to determine whether the fault has been cleared. The ﬁrst method is to inspect the yellow indicator labelled BS fault on the DXU. 136 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 139: Local Bus
"TRU" in the chapter "Corrective Action". Replace the backplane according to instructions in the section "DXU/ECU Backplane" in the chapter "Corrective Action": LZN 302 48 Uen Rev R6A 137 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 140 If an extension cabinet is used, replace the termination unit in the extension cabinet ﬁrst, then in the master cabinet. 138 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 141: Power Communication Loop
Power communication loop Note: Several instructions in this section requires the OMT. For further information on the use of OMT, see: LZN 302 48 Uen Rev R6A 139 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 142 The opto bus cables must have a bent radius of at least 35 Figure 67 Example of a fault situation in the power communication loop 140 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 143 FSC. (8) Test after corrective action Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". LZN 302 48 Uen Rev R6A 141 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 144: Psu
The monitor also determines whether the fault is in the master cabinet, or in an extension cabinet (if connected). 142 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 145 • On: Proceed to step (7). One or more faults are detected in the PSU. • PSU revision R4A or later. LZN 302 48 Uen Rev R6A 143 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 146: Psu Dc Cable
Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". 6.29 PSU DC Cable Figure 69 PSU DC cable 144 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 147 FSC. (6) Test after corrective action Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". LZN 302 48 Uen Rev R6A 145 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 148: Rbs Db
There are two methods to determine whether the fault has been cleared. The ﬁrst method is to inspect the yellow indicator labelled BS fault on the DXU. BS fault indicator status? 146 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 149: Temperature Sensors
Press CPU Reset BS fault indicator O ff status? Replace the sensor(s) 22_0116C Figure 71 Temperature sensors (part 1 of 3) LZN 302 48 Uen Rev R6A 147 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 150 BS fault indicator O ff status? Test after corrective action Contact the supervisor 55_0116B Figure 73 Temperature sensors (part 3 of 3) 148 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 151 (7) Replace the sensor(s) Replace the faulty temperature sensor(s) according to instructions in the section "Temperature Sensors" in the chapter "Corrective Action". LZN 302 48 Uen Rev R6A 149 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 152 (13) Replace the DXU/ECU backplane Replace the DXU/ECU backplane according to instructions in the section "DXU/ECU Backplane" in the chapter "Corrective Action". 150 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 153 FSC. (16) Test after corrective action Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". LZN 302 48 Uen Rev R6A 151 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 154: Timing Bus
Locate the faulty cabinet according to work order information. (2) Display fault information Use the monitor "Display Faulty RUs" in the OMT to list all RUs that are faulty. 152 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 155 Call" in the chapter "Test after Corrective Action". Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". LZN 302 48 Uen Rev R6A 153 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 156: Tma A And Tma B
Several instructions in this section requires the OMT. For further information on the use of OMT, see: OMT User’s Manual LZN 302 01 154 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 157 Off: Proceed to step (10). No fault is detected in the TRU. • On: Proceed to step (7). One or more faults are detected in the TRU. LZN 302 48 Uen Rev R6A 155 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 158 Contact the supervisor or manager who will take further action, for example, to consult an FSC. (10) Test after corrective action Take the following actions: Make a test call: 156 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 159: Bus
Several instructions in this section requires the OMT. For further information on the use of OMT, see: OMT User’s Manual LZN 302 01 LZN 302 48 Uen Rev R6A 157 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 160 TRU as described in step 1. (6) BS fault indicator status? There are two methods to determine whether the fault has been cleared. 158 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 161 Call" in the chapter "Test after Corrective Action". Proceed to the section "Before Leaving the Site" in the chapter "Test after Corrective Action". LZN 302 48 Uen Rev R6A 159 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 163: Corrective Action
Below is a brief description of the two different changes of state and how to stop a change of mode to remote. Figure 77 Control panel on TRU LZN 302 48 Uen Rev R6A 161 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 164 The attempt to enable a connection with the BSC will stop. • The RU will then remain in local mode with the communication link disconnected and the Local mode indicator on. 162 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 165: Accu
ﬂashing. Wait until the Local mode indicator has a ﬁxed yellow light. This indicates that the DXU is in local mode. LZN 302 48 Uen Rev R6A 163 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 166 Refer to the ﬁgure below to identify the ECU fuse on the control board. If the fuse is blown, replace it. 164 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 167 Note: Unless under contractual warranty, after replacement, the control board shall be disposed of locally. Do not return the control board to Ericsson for replacement, repair or disposal. 7.3.4 Replacement of Circuit Breaker Loosen the screws on the front of the ACCU and open the top cover.
Page 169 Proceed to Section 7.3.6 Take into operation on page 169. Note: Unless under contractual warranty, after replacement, the circuit breaker shall be disposed of locally. Do not return the circuit breaker to Ericsson for replacement, repair or disposal. 7.3.5 Replacement of ACCU...
Page 170 Reconnect the incomming AC wires to the AC mains switch. Proceed to Section 7.3.6 Take into operation on page 169. 168 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 171 ACCU shall be repaired locally at the RBS site or in a local repair shop. If the ACCU is unrepairable, it shall be disposed of locally by the customer. Do not return the ACCU to Ericsson for replacement, repair or disposal. 7.3.6 Take into operation Turn on all circuit breakers on the ACCU.
Page 172 Corrective Action Figure 84 Factory strapping of switch and incoming terminal block Figure 85 Single-phase connection at 50 Hz 170 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 174: Accu - Three-Phase Version
Isolate the entire cabinet, including the mounting base, from AC mains power. The AC mains switch is located somewhere external to the mounting base. 172 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 175 Lift the latches located on either side to pull out the ACCU enough to access the connectors on the back of the unit. LZN 302 48 Uen Rev R6A 173 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 176 Note: Unless under contractual warranty, after replacement, the control board shall be disposed of locally. Do not return the control board to Ericsson for replacement, repair or disposal. 7.4.4 Replacement of Circuit Breaker Loosen the screws on the front of the ACCU and open the top cover.
Page 177 ﬁgure below. Figure 90 Separating circuit breaker and auxiliary contact Remove the lid on the circuit breaker. Refer to the ﬁgure below. LZN 302 48 Uen Rev R6A 175 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 178 Proceed to Section 7.4.6 Take into operation on page 178 in this section. Note: Unless under contractual warranty, after replacement, the circuit breaker shall be disposed of locally. Do not return the circuit breaker to Ericsson for replacement, repair or disposal. 7.4.5 Replacement of ACCU Note:...
Page 179 Pull the cabling with the AC mains switch through the large cavity in the lower air-ﬂow director plate and attach it to the rail on the mounting plate. See ﬁgure above. LZN 302 48 Uen Rev R6A 177 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 180 ACCU shall be repaired locally at the RBS site or in a local repair shop. If the ACCU is unrepairable, it shall be disposed of locally by the customer. Do not return the ACCU to Ericsson for replacement, repair or disposal. 7.4.6 Take into operation Turn on all AC circuit breakers on the ACCU.
Page 181 Remove the cable before Single-phase. connecting to mains supply. L3/N L1/L2 Connection 1 03_0191C Figure 95 Strapping option “Single-phase 230 V AC” LZN 302 48 Uen Rev R6A 179 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 182 L1/L2 Three-phase star, five-wire, separate PE and N conductor. Connection 2 17_0092B Figure 97 Strapping option “Three-phase star 208/120 V AC” 180 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 183 Three-phase star, four-wire. connecting to mains supply. L3/N Connection 2 L1/L2 04_0191B Figure 99 Strapping option “Three-phase star 230 V AC” LZN 302 48 Uen Rev R6A 181 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 184: Air Conditioner
The instructions below refer to both types of climate units used with the RBS, that is, the air conditioner and the heat exchanger system. 182 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 185 RBS site or in a local repair shop. If the air conditioner is unrepairable, it shall be disposed of locally by the customer. Do not return the air conditioner to Ericsson for replacement, repair or disposal. LZN 302 48 Uen Rev R6A 183 (330) ©...
Page 186: Alna
ﬂashing. Wait until the Local mode indicator has a ﬁxed yellow light. This indicates that the DXU is in local mode. 184 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 187 Replace the defective ALNA and reconnect the three RF cables. Note: After replacement, the ALNA must be returned to Ericsson for repair. Maintenance personnel must attach a repair delivery note, LZF 084 64 (Blue Tag), to the ALNA. The repair delivery note shall include a clear description of the fault found.
Page 188: Batteries
The table below shows the output ﬂoat voltage of the batteries (V DC) in relation to the battery temperature. 186 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 189 +9 +48 28.0 +19 +66 27.5 +29 +84 27.0 +39 +102 26.5 7.7.2 Replacement Procedure Figure 102 BDM with internal batteries LZN 302 48 Uen Rev R6A 187 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 190 Pull the unit out to access the batteries. Using insulated tools, disconnect the batteries, negative terminals ﬁrst, positive terminals second, and remove batteries. 188 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 191 Note: Unless under contractual warranty, after replacement, the batteries shall be disposed of locally. Do not return the batteries to Ericsson for replacement, repair or disposal. Put into operation Switch on the AC circuit breakers on the ACCU. (If supplied). Switch on the internal battery by pressing the button marked "Battery disconnect"...
Page 192: Bdm
Corrective Action DANGER Read Safety Instructions regarding handling and connecting batteries. Figure 104 190 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 193 If supplied, the opto bus cables must have a bent radius of at least 35 mm. Disconnect the DC outlet cable from both PSUs. LZN 302 48 Uen Rev R6A 191 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 194: Ccu
If the BDM is unrepairable, it shall be returned to Ericsson for repair. Maintenance personnel must attach a repair delivery note, LZF 084 64 (Blue Tag), to the BDM. The repair delivery note shall include a clear description of the fault found.
Page 195 Note: Unless under contractual warranty, after replacement, the CCU shall be disposed of locally. Do not return the CCU to Ericsson for replacement, repair or disposal. Air Conditioner Turn off the DC circuit breaker for the air conditioner on the BDM/IDM.
Page 196 Strap the replacement CCU for the correct voltage. The default connection is with a jumper connection for 230 V AC. Refer to the picture below. 194 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 198: Cdu
BDM/IDM. Note: Unless under contractual warranty, after replacement, the CCU shall be disposed of locally. Do not return the CCU to Ericsson for replacement, repair or disposal. 7.10 Note: CDUs will successively be marked on the front with a coloured label showing the frequency. To simplify identiﬁcation, different frequencies have different colours.
Page 199 Wait until the Local mode indicator on the TRU concerned has a ﬁxed yellow light. This indicates that the TRU is in local mode. LZN 302 48 Uen Rev R6A 197 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 200: Cdu Bus
Press CPU Reset on the DXU. The RU information from the new CDU will then be loaded into the RBS database. Note: After replacement, the CDU must be returned to Ericsson for repair. Maintenance personnel must attach a repair delivery note, LZF 084 64 (Blue Tag), to the CDU. The repair delivery note shall include a clear description of the fault found.
Page 201 Unless under contractual warranty, after replacement, the CDU bus shall be disposed of locally. Do not return the CDU bus to Ericsson for replacement, repair or disposal. Put into operation Connect DC power to the cabinet by installing the BDM or IDM and turning on all circuit breakers on the BDM or IDM.
Page 202: Cdu-Tru Rx Cables
This will set the TRU in local mode. Wait until the Local mode indicator has a ﬁxed yellow light. 200 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 203 RBS. Note: Unless under contractual warranty, after replacement, the cables shall be disposed of locally. Do not return the cables to Ericsson for replacement, repair or disposal. LZN 302 48 Uen Rev R6A 201 (330) © Ericsson Radio Systems AB 1999-11-11 —...
Page 204: Cdu-Tru Tx Cables
This will set the TRU in local mode. Wait until the Local mode indicator has a ﬁxed yellow light. 202 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 205: Dc Filter
RBS. Note: Unless under contractual warranty, after replacement, the cables shall be disposed of locally. Do not return the cables to Ericsson for replacement, repair or disposal. 7.14 DC Filter Note: This instruction is valid for the RBS equipped with external batteries only.
Page 206 Remove the screws holding the BDM to the cabinet. Pull the BDM out and disconnect the cables that are connected to 204 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 207 Note: Unless under contractual warranty, after replacement, the DC ﬁlter shall be disposed of locally. Do not return the DC ﬁlter to Ericsson for replacement, repair or disposal. LZN 302 48 Uen Rev R6A 205 (330) © Ericsson Radio Systems AB 1999-11-11 —...
Page 208: Dxu
ﬂashing. Wait until the Local mode indicator has a ﬁxed yellow light. This indicates that the DXU is in local mode. 206 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 209 Check that the Operational indicator on the new DXU has a ﬁxed green light. Note: After replacement, the DXU must be returned to Ericsson for repair. Maintenance personnel must attach a repair delivery note, LZF 084 64 (Blue Tag), to the DXU. The repair delivery note shall include a clear description of the fault found.
Page 210: Dxu/Ecu Backplane
ﬂashing. Wait until the Local mode indicator has a ﬁxed yellow light. This indicates that the DXU is in local mode. 208 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 211 Note: Unless under contractual warranty, after replacement, the DXU/ECU backplane shall be disposed of locally. Do not return the DXU/ECU backplane to Ericsson for replacement, repair or disposal. Put into operation Connect DC power to the cabinet by installing the BDM or IDM and turning on all circuit breakers on the BDM or IDM.
Page 212: Ecu
Reconnect the cables. Note: After replacement, the ECU must be returned to Ericsson for repair. Maintenance personnel must attach a repair delivery note, LZF 084 64 (Blue Tag), to the ECU. The repair delivery note shall include a clear description of the fault found.
Page 213: Fans
Replace the fan clamp and reconnect the fan cables to the FCU. Reinstall the cover plate in front of the fans. Note: Unless under contractual warranty, after replacement, the fan shall be disposed of locally. Do not return the fan to Ericsson for replacement, repair or disposal. 7.19 7.19.1 General Note: The loss of air ﬂow from the fans during replacement can...
Page 214 Remove the cover plate in front of the fans and the FCU. Remove the screws holding the FCU to the cabinet wall. 212 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 215: Heater
Replace the cover plate in front of the fans. Note: Unless under contractual warranty, after replacement, the FCU shall be disposed of locally. Do not return the FCU to Ericsson for replacement, repair or disposal. 7.20 Heater DANGER High voltage is used in the operation of this equipment. Both direct contact with the mains power and indirect contact via damp items or moisture can be fatal.
Page 216 The heater is held in the climate system from the outside by four screws. Loosen screws. Unplug and remove heater. Replacement is the reverse of the proceeding steps. 214 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 217: Heat Exchanger Fans
Corrective Action Note: Unless under contractual warranty, after replacement, the heater shall be disposed of locally. Do not return the heater to Ericsson for replacement, repair or disposal. 7.21 Heat Exchanger Fans 7.21.1 Air Conditioner Version, External Fans WARNING Read the Safety chapter regarding handling of heavy goods.
Page 218 Note: Unless under contractual warranty, after replacement, the fan cassette shall be disposed of locally. Do not return the fan to Ericsson for replacement, repair or disposal. 216 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 —...
Page 219 Replacement is the reverse of the above. Note: Unless under contractual warranty, after replacement, the fan shall be disposed of locally. Do not return the fan to Ericsson for replacement, repair or disposal. LZN 302 48 Uen Rev R6A 217 (330) © Ericsson Radio Systems AB 1999-11-11 —...
Page 220 Unplug the fan. The connector for the two external fans is located in the control board section. Loosen the four screws holding the cassette to the main body of the heat exchanger. 218 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 221 Replacement is the reverse of the preceding procedures. Note: Unless under contractual warranty, after replacement, the fan shall be disposed of locally. Do not return the fan to Ericsson for replacement, repair or disposal. 7.21.4 Heat Exchanger Version, Internal fan WARNING Read the Safety chapter regarding handling of heavy goods.
Page 222: Hlin And Hlout Cables
Unless under contractual warranty, after replacement, the HL cable shall be disposed of locally. Do not return the HL cable to Ericsson for replacement, repair or disposal. Carefully connect the new HL cable between the two CDUs. Tighten the cable connectors in both ends of the HL cable with a torque of 0.6 –...
Page 223: Humidity Sensor
Unless under contractual warranty, after replacement, the HL cable shall be disposed of locally. Do not return the HL cable to Ericsson for replacement, repair or disposal. Connect the new HL cable between the connection ﬁelds of the master and extension cabinets.
Page 224 Note: Unless under contractual warranty, after replacement, the humidity sensor shall be disposed of locally. Do not return the humidity sensor to Ericsson for replacement, repair or disposal. Put into operation Connect AC mains power to the cabinet with the AC mains switch in the mounting base.
Page 226 If the IDM is unrepairable, it shall be returned to Ericsson for repair. Maintenance personnel must attach a repair delivery note, LZF 084 64 (Blue Tag), to the IDM. The repair delivery note shall include a clear description of the fault found.
Page 227: Ovp Box
"Overvoltage arrester board" of the OVP box. It is not recommended to change the overvoltage arrester board since this is more complicated and time consuming. LZN 302 48 Uen Rev R6A 225 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 228: Psu
Unless under contractual warranty, after replacement, the OVP box, the "Overvoltage arrester board"or the sub-boards with gas discharge tubes shall be disposed of locally. Do not return any of these items to Ericsson for replacement, repair or disposal. 7.26 Figure 133...
Page 229: Psu Dc Cable
Fault indicator on the ECU should go out. Note: After replacement, the PSU must be returned to Ericsson for repair. Maintenance personnel must attach a repair delivery note, LZF 084 64 (Blue Tag), to the PSU. The repair delivery note shall include a clear description of the fault found.
Page 230: Rbs Db
OMT User’s Manual LZN 302 01 7.29 RX Antenna Feeder Note: When changing antenna feeders, refer also to the chapter "Cable Connections". 228 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 231 Unless under contractual warranty, after replacement, the antenna feeder shall be disposed of locally. Do not return the antenna feeder to Ericsson for replacement, repair or disposal. Put the new cable in and attach it to the CDU with a torque of 8 Nm ±1 Nm and to the connection plate with a torque of 15 Nm...
Page 232: Temperature Sensors
Replacement is the reverse of the above. Note: Unless under contractual warranty, after replacement, the temperature sensor shall be disposed of locally. Do not return the temperature sensor to Ericsson for replacement, repair or disposal. Temperature sensor number 2 Note:...
Page 233: Tru
Replacement is the reverse of the above. Note: Unless under contractual warranty, after replacement, the temperature sensor shall be disposed of locally. Do not return the temperature sensor to Ericsson for replacement, repair or disposal. 7.31 Note: TRUs will successively be marked on the front with a coloured label showing frequency and encryption.
Page 234 Wait until the Operational indicator has a ﬁxed green light. If the new TRU contains an old software version the DXU will automatically download the correct version. The software- 232 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 235: Tru Backplane
ﬂashing Operational indicator and may take some time (up to 10 minutes). Note: After replacement, the TRU must be returned to Ericsson for repair. Maintenance personnel must attach a repair delivery note, LZF 084 64 (Blue Tag), to the TRU. The repair delivery note shall include a clear description of the fault found.
Page 236 Unless under contractual warranty, after replacement, the antenna feeder shall be disposed of locally. Do not return the antenna feeder to Ericsson for replacement, repair or disposal. Put the new cable in and attach it to the CDU with a torque of 8 Nm ±1 Nm and to the connection plate with a torque of 15 Nm...
Page 237: Varistors
Inspect the mounting frame of the varistor. Replace the mounting frame if it is – burned – mechanically damaged – covered with dust Replace the defective varistor. LZN 302 48 Uen Rev R6A 235 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 238 Corrective Action Note: Unless under contractual warranty, after replacement, the varistor shall be disposed of locally. Do not return the varistor to Ericsson for replacement, repair or disposal. 236 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 —...
Page 239: Test After Corrective Action
Start the TEMS program in the Windows environment. Select "Enable Connections" in the Externals menu. Specify the serial port for the TEMS mobile. LZN 302 48 Uen Rev R6A 237 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 240 Select "Connect" in the "Connection" menu. Select the "Read IDB" function in the "File" menu. Change view mode to "MO view". 238 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 241: Climate System Test
The tester activates the various RUs within the climate unit. A fault code will be activated if the tester senses that the RU is defective. LZN 302 48 Uen Rev R6A 239 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 242 (If connected). Disconnect the cable from connector A on the CCU. Connect the "Signalling/control and power interface" from the tester to connector A on the CCU. 240 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 243 ﬂash alternatively the fault code and the internal air temperature of the RBS. The fault code can only be cleared by turning off the AC power LZN 302 48 Uen Rev R6A 241 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 244 The table below speciﬁes the AC and DC power requirements when the tester is used on a climate unit which is removed from the RBS. 242 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 245: Before Leaving The Site
If the answer to any of the items is NO, do not depart from the site until the problem/fault has been cleared or investigated. LZN 302 48 Uen Rev R6A 243 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 246 Are the hazard lights on the antenna operational? Do the antennas, towers, and RF cables appear in operational order? OMC notiﬁed? Alarms ceased? Signature: Date: 244 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 247: Concluding Routines
The repair delivery note LZF 084 84 can be ordered from the local FSC. A description of how to ﬁll in a repair delivery note follows below. LZN 302 48 Uen Rev R6A 245 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 248: Handling Of Replaced Parts And Rus
Customer disposable Customer disposable parts are consumable parts, which have no lower sub-assembly or component that can be used to repair them. 246 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 249 Mechanical hardware (doors, hinges, plates, locks, seals, gaskets, brackets and other parts of the RBS cabinet) Unless under contractual warranty, after replacement, these parts shall be disposed of locally. Do not return these parts to Ericsson for replacement, repair or disposal. Customer repairable Customer repairable parts are such parts, which have a lower sub-assembly or component that can be used to repair them.
Page 250: Transport Of A Repairable Unit
PSUs • TRUs After replacement, these parts must be returned to Ericsson for repair. Maintenance personnel must attach a repair delivery note, LZF 084 64 (Blue Tag), to the returned part. The repair delivery note shall include a clear description of the fault found. Refer to the section "Repair Delivery Note –...
Page 251 Revision state, found on the label of the unit after the product number. For example R1A Site status Can be “Installation Test” or “Operation” LZN 302 48 Uen Rev R6A 249 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 252: Trouble Report
Product number or Document number: R-state Site name: Site status: Site id: Trouble symptoms: Trouble Description: Comments: 03_0179B Figure 145 Example of ﬁlled-in trouble report 250 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 253 Product number or Document number: R-state Site status: Site id: Site name: Trouble symptoms: Trouble Description: Comments: 02_0179B Figure 146 Trouble report, blank LZN 302 48 Uen Rev R6A 251 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 255: Fault Code List
External Condition Map Class 1 (EC1) Conditions reported in this class are conditions that affect MO functionality. The conditions are TG external. LZN 302 48 Uen Rev R6A 253 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 256 For example, if the temperature in the cabinet is too high or the incoming AC mains power is out of range, the logical RU "Environment" is denoted as faulty. Logical RU is: 254 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 257: Decoding Of Fault Maps
Translating this number by using the replacement unit map for SO TRXC will give us the information "Suspected replacement unit is TRU". (The TRXC number corresponds LZN 302 48 Uen Rev R6A 255 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 258: So Fault Lists
AO I1B fault map and the cause is reported by the SO I1A/I2A fault maps and the RU map. 256 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 259 Indoor temperature above safe range Micro RBS only Indoor temperature below safe range Micro RBS only SO CF, internal fault map class 1B Not used. LZN 302 48 Uen Rev R6A 257 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 260 System voltage sensor fault A/D converter fault Varistor fault Local bus fault High-frequency software fault Non-volatile memory corrupted RX diversity lost 258 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 261 ALNA B Up to R7.0 ALNA/TMA B R7C and on Battery Heater Heat exchanger external fan Heat exchanger internal fan Humidity sensor LZN 302 48 Uen Rev R6A 259 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 262 TX antenna B R5 only X bus Antenna PSU DC cable R7D and on (1) If the cabinet is an RBS 2101 conﬁgured with a heat exchanger. 10.3.2 SO TRXC SO TRXC, external condition map class 1 Fault Fault type...
Page 263 RX conﬁguration table checksum fault RX synthesizer unlocked RX internal voltage fault Astra Dixie communication fault Astra Tracy communication fault TX EEPROM checksum fault LZN 302 48 Uen Rev R6A 261 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 264: Ao Fault Lists
AO I1B fault map and the cause is reported by the SO I1A/I2A fault maps and the RU map. 262 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 265 AO RX, external condition map class 1 Not used. AO RX, external condition map class 2 Not used. AO RX, internal fault map class 1A Not used. LZN 302 48 Uen Rev R6A 263 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 266 AO TF, external condition map class 2 Fault Fault type EXT synch (no usable external reference) PCM synch (no usable PCM reference) 264 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 267 Remark CU not usable R6.0 and on CDU VSWR limits exceeded CDU output power limits exceeded TX antenna VSWR limits exceeded LZN 302 48 Uen Rev R6A 265 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 268 TX Auxiliary Equipment Fault R7.0 and on AO TX, internal fault map class 2A Fault Fault type Remark TX diversity fault R7C and on 266 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 269: Optical Indicators
Wait, activity is in progress. Note: Always check with the OMT for possible faults if a red indicator is lit or ﬂashing. LZN 302 48 Uen Rev R6A 267 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 271: Preventive Maintenance
Access the unit Do checklist Correct faults Faults? Do preventive maintenance routine P002922A Figure 147 The “Preventive Maintenance Process” LZN 302 48 Uen Rev R6A 269 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 272 ﬁnished. During this waiting time, other maintenance routines can be performed. (3) Access the unit Start the preventive maintenance routine by accessing the appropriate unit. 270 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 273 Yes: Proceed to step (13) Before leaving the site. (12) Start maintenance procedure of the next unit Select the next unit for the preventive maintenance routine. LZN 302 48 Uen Rev R6A 271 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 274: Preventive Maintenance Intervals
The calibration procedure requires that a high precision frequency counter is used. Refer to the section "Test Equipment " in the chapter "Tools and Instruments". 272 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 275 12.8 DXU maintenance, oscillator veriﬁcation on page 286. During the 10 minutes waiting time, other units in the cabinet can be maintained. LZN 302 48 Uen Rev R6A 273 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 276: Climate Unit Maintenance
RBS’s normal operations. For procedures on how to remove and replace an air conditioner, see the section "Air Conditioner" in the chapter "Corrective Action". 274 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 277 Components within the Heat exchanger are easily accessed. It is recommended that the preventive maintenance procedures be performed when it is mounted on top of the radio sub-cabinet. LZN 302 48 Uen Rev R6A 275 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 278 Preventive Maintenance Heat exchanger Internal fan Climate control unit Heater External fans (cassette) 04_0175B Figure 151 Heat exchanger climate unit 276 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 279 Free the cover by removing the spade-type connector on the earthing wire from the terminal on the inside of the cover. LZN 302 48 Uen Rev R6A 277 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 280 "Corrective Action". Excessive compressor noise will require a qualiﬁed refrigeration specialist to repair on site, or replacement of the entire unit and 278 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 281 "Air Conditioner" in the chapter "Corrective Action". Preventive maintenance routines Refer to the drawings of the various climate units, for locations of fans and heaters. LZN 302 48 Uen Rev R6A 279 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 282 Remove the internal fan by loosening the two screws at the top of the unit holding it to the connecting wall, then lifting 280 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 283: Antenna System Maintenance
All points in the checklist are written to be answered "yes". Should any point have a "no" answer, complete the checklist ﬁrst, then proceed to the section "Correct Faults". LZN 302 48 Uen Rev R6A 281 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 284 Preventive maintenance routines Except for the checklist provided, there are no preventive maintenance routines for the antenna system. 282 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 285: Battery Maintenance
Short circuits can cause injury or damage. Although the battery voltage may be low, the released power can be extremely high. Figure 155 BDM with batteries LZN 302 48 Uen Rev R6A 283 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 286 If the batteries require replacement, refer to the section "Batteries" in the chapter "Corrective Action". Returning the RBS into operation is the reverse of the above. 284 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 287 Preventive maintenance routines Except for the checklist provided, there are no speciﬁc preventive maintenance routines for the battery system for ﬁrst line maintenance. LZN 302 48 Uen Rev R6A 285 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 288: Fans Replacement
Checklist Before Leaving the Site Refer to the section "Before Leaving the Site" in the chapter "Test after Corrective Action" and perform the checklist provided. 286 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 289: Cable Connections
CDU-C 1800 / 1900 MHz (without duplexer) • CDU-C+ all bands (with or without duplexer) The following table lists the connectors with identical functions. LZN 302 48 Uen Rev R6A 287 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 290: Cable Set Modules
CDU 2 in the extension cabinet. Each module covers one cell, unless the cell spans more than one cabinet. 288 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 291: Cdu-A And Cdu-C
RF sockets in the base of the cabinet for termination to antennas. The following information details the base panel sockets and the CDU connections to which they are terminated. LZN 302 48 Uen Rev R6A 289 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 294: Cdu-C+ Used As Cdu-C
RF sockets in the base of the cabinet for termination to antennas. The following information details the base panel sockets and the CDU connections to which they are terminated. 292 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 297: Dxu/Ecu Backplane
RX B HL in RX 1 HL in HL out TX 1 HL out 13.5 DXU/ECU Backplane Figure 160 DXU/ECU backplane LZN 302 48 Uen Rev R6A 295 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 298 Cable Connections Figure 161 Connection ﬁelds, old version. Figure 162 Connection ﬁelds, new version. 296 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 299 CDU Pfwd2 RPM 513 703/01640 ← → CDU Preﬂ2 RPM 513 703/01640 J2 bottom (Not used) (Not used) (Not used) (Not used) LZN 302 48 Uen Rev R6A 297 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 301: Positioning Of Rus
Heater and active cooler Climate sub- cabinet Radio sub- cabinet Temp 2 Temp 1 Mounting Hum 1 base P003208A Figure 163 Positioning of RUs LZN 302 48 Uen Rev R6A 299 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 303: Frequency Lists
0.800 64 – 60 = 4. Add 0.800 MHz 3 Add the values to get the correct ARFCN 902.800 947.800 frequencies LZN 302 48 Uen Rev R6A 301 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 304 958.000 892.000 937.000 914.000 959.000 893.000 938.000 914.200 959.200 894.000 939.000 914.400 959.400 895.000 940.000 914.600 959.600 896.000 941.000 914.800 959.800 302 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 305: Gsm 1800
MHz. Calculation Example To ﬁnd the TX and RX frequencies for ARFCN 764, follow the steps in the table below: LZN 302 48 Uen Rev R6A 303 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 306 1854.000 1719.000 1814.000 1760.000 1855.000 1720.000 1815.000 1761.000 1856.000 1721.000 1816.000 1762.000 1857.000 1722.000 1817.000 1763.000 1858.000 1723.000 1818.000 1764.000 1859.000 304 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 307: Gsm 1900
MHz. Calculation Example To ﬁnd the TX and RX frequencies for ARFCN 764, follow the steps in the table below: LZN 302 48 Uen Rev R6A 305 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 308 1972.000 1859.000 1939.000 1893.000 1973.000 1860.000 1940.000 1894.000 1974.000 1861.000 1941.000 1895.000 1975.000 1862.000 1942.000 1896.000 1976.000 1863.000 1943.000 1897.000 1977.000 306 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 309 1955.000 1909.000 1989.000 1876.000 1956.000 1909.200 1989.200 1877.000 1957.000 1909.400 1989.400 1878.000 1958.000 1909.600 1989.600 1879.000 1959.000 1909.800 1989.800 1880.000 1960.000 LZN 302 48 Uen Rev R6A 307 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 311: Country Codes
Aruba Azerbaijan Bosnia-Herzegovina Barbados Bangladesh Belgium Burkina Faso Bulgaria Bahrain Burundi Benin Bermuda Brunei Bolivia Brazil Bahamas Bhutan Bouvet Island Botswana LZN 302 48 Uen Rev R6A 309 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 312 Djibouti Denmark Dominica Dominican Republic Algeria Ecuador Estonia Egypt Western Sahara Spain Ethiopia Finland Fiji Falkland Islands Micronesia Faeroe Islands France 310 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 313 Haiti Hungary Indonesia Ireland Israel Isle of Man India British Indian Ocean Territory Iraq Iran Iceland Italy Jersey, C.I. Jamaica Jordan LZN 302 48 Uen Rev R6A 311 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 314 Morocco Monaco Moldova, Republic of Madagascar Marshall Islands Macedonia Mali Myanmar (formerly Burma) Mongolia Macao Northern Mariana Islands Martinique Mauritania Montserrat 312 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 315 Papua New Guinea Philippines Pakistan Poland St. Pierre and Miquelon Pitcairn Puerto Rico Portugal Palau Paraguay Panama Canal Zone Quatar Re ´ union LZN 302 48 Uen Rev R6A 313 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 316 Turks and Caicos Islands Chad French Southern Territories Togo Thailand Tajikistan Tokelau Turkmenistan Tunisia Tonga East Timor Turkey Trinidad and Tobago Tuvalu 314 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 317 Virgin Islands, British Virgin Islands, US Vietnam Vanuatu Wallis and Futuna Islands Samoa Yemen, Republic of Yugoslavia South Africa Zambia Zaire Zimbabwe LZN 302 48 Uen Rev R6A 315 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 319: Glossary
In the RBS manuals, terminology deﬁned by GSM is used together with terms related to Ericsson and the CME 20 and CMS 40 projects. Terms and Abbreviations An arrow -> is used to indicate a reference to another entry in this list.
Page 320 Channel combining the following common control channels: PCH Paging CHannel RACH Random Access CHannel AGCH Access Grant CHannel Climate Control Unit 318 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 321 Control Module (for TMA) Digital Radio Communication Tester CME 20 Cellular Mobile Europe Ericsson GSM system - CME 20 Ericsson digital land mobile telecommunication system based on the GSM standards. - CME 201 Ericsson GSM system comprising Ericsson equipment only.
Page 322 System Voltage Distribution Module DMRU Distributed Main Replaceable Unit. If a Main RU is subordinated to the CMRU, it is said to be distributed. 320 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 323 Electrically Erasable Programmable Read-Only Memory Electro Magnetic Compatibility ElectroMotive Force Environmental Errored Second External Synchronization Bus ElectroStatic Discharge Ericsson Support Ofﬁce External LZN 302 48 Uen Rev R6A 321 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 324 One version of the climate unit Heat Exchanger Unit HLIN High Level IN HLOUT High Level OUT Heat Management System Humidity 322 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 325 Abis layer 2 is sometimes used synonymously with LAPD. Line Build Out Light Emitting Diode Line Loop Back Low Noise Ampliﬁer LZN 302 48 Uen Rev R6A 323 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 326 BSC. Modiﬁcation Handling System Ericsson trouble report database Man-Machine Interface Managed Object Mobile Station Mobile services Switching Centre 324 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 327 All the relevant timeslots are dropped out by each RBS. (This function is sometime called cascading.) Ericsson Network Management System in Nominal Power The nominal power is the power level deﬁned when conﬁguring the transceiver.
Page 328 Uplink only subchannel of CCCH for MS request for allocation of a dedicated channel. -> CCCH Remote Alarm Indication Random Access Memory 326 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 329 Measure of signal quality as deﬁned in GSM 05.08:8.2.4 SACCH Slow Associated Control CHannel Synchronization CHannel SDCCH Stand alone Dedicated Control CHannel LZN 302 48 Uen Rev R6A 327 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 330 Time Division Multiple Access Multiplexing of several channels in a common frequency band. Each channel is assigned a certain time division, a time slot. 328 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 331 Transceiver System Transceiver Unit TRXC Transceiver Controller Time Slot A 0.577 ms period (TDMA frame subunit) corresponding to 156.25 raw bits of LZN 302 48 Uen Rev R6A 329 (330) © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...
Page 332 X bus The X bus carries transmit air data frames between transceivers. This is used for baseband frequency hopping. 330 (330) LZN 302 48 Uen Rev R6A © Ericsson Radio Systems AB 1999-11-11 — All Rights Reserved —...

Ericsson RBS 2101 Maintenance Manual

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