RBS 2109 User’s Guide P010476A Figure 66 Reading Fault Status 3. In the Available monitors box, select ‘‘MO fault maps’’ and click → to add ‘‘RBS’’ into the Monitors to start box. 4. Click Start monitor. 5. In the RBS Event Monitor window, check the MO faults box to see if there are any faults. If there are, then correct these before continuing. When an MO fault is selected, corresponding fault description, action and related faults are displayed. See also Appendix Fault List. 6.
RBS 2109 User’s Guide Note: The alarms must be individually identifiable in the OMT. There must be no doubt which alarm was indicated. The alarm message must be unique for each alarm. 1. On the Maintenance menu, click Monitor to open the Monitor window. See figure below. P010475A Figure 67 Testing External Alarms 2. In the Available monitors box, select ‘‘External Alarm Status’’ and click → to add ‘‘Alarm Inlets’’ in the Monitors to start box. 3. Click Start monitor. 4.
RBS 2109 User’s Guide 6. Release the trigger on the alarm and check that the alarm disappears from the OMT. 7. Repeat steps 5 to 7 for all defined external alarms. 8. Close the RBS Event Monitor window when finished. 7.9 Performing Concluding Routines This section describes the actions to take before leaving the site and provides a site checklist. It also contains a test record. 7.9.1 Saving IDB In case it is necessary to re-install the IDB, the IDB parameters must be saved on the PC. 1.
RBS 2109 User’s Guide Table 43 RRU and IXU Indicators After Site Installation Tests Without BSC Connection RBS in remote mode and no BSC connected RRU IXU Fault Off Fault Off Operational Off Operational Off Local Flashing Local Flashing RF off On RBS fault Off External alarm Off AC power on On DC power on On IXU temp. Off Transmission OK On/Off AC power on On DC power on On RRU temp. Off (1) (1) (1) (1) (2) (1) Depending on power system configuration.
RBS 2109 User’s Guide 6. If RBS site integration is not performed immediately after site installation tests, then close the sunshields. 7.9.3 Completing Test Record This section contains a test record. It is recommended to fill in the test record during the testing procedure.
RBS 2109 User’s Guide Test Record for Stand-alone Tests NE Commissioning Date Site Site No Cell RBS type Tester's Name NE STAND ALONE TEST GSM - Remark Antenna System Test Record Cable connections inspected Power supply verified Fan Unit Tested (If Applicable) IDB parameters set Fault status read External Alarms tested Notes: P010243C Figure 68 Test Record for Site Installation Tests EN/LZT 720 0090 Uen R1A 2004-09-17 141
RBS 2109 User’s Guide 7.9.4 Filling in Checklist The following checklist is not mandatory but strongly recommended. Local procedures and safety regulations must be evaluated and included in this checklist. Table 45 Checklist Check the following: 142 OK 1 The indicators on the RRU and the IXU are in the approved status. 2 The test equipment has been disconnected from the RBS 3 The RBS cabinet and the mounting base are free from foreign objects. 4 All cabinets and cables are free of damage.
RBS 2109 User’s Guide 8 RBS Site Integration This chapter describes how to integrate the RBS with the BSC into the GSM network, and the tests used to verify the integration. Integration is carried outwith the RBS connected to a PCM link and in close co-operation with a BSC operator. All results must be documented in the test record. Preconditions at the RBS Site This section describes the preconditions for personnel at the RBS site before integrating the RBS.
RBS 2109 User’s Guide − BCCHNO parameters − DCHNO parameters − BSIC parameters − Time slots (TS) used for SDCCH Work Process for RBS Site Integration This section describes the order in which to perform the integration and tests. Each section should be completed and the results written in the test record before moving on to the next step in the process. See Figure below.
RBS 2109 User’s Guide 1. Open the RRU, and the IXU cover. P010357B 2. Remove the PCM cable plug, starting with position A, and connect it to the Loop Back socket on the Loop forward/backward board. Loop forward/backward board P011267A 3. Request that the BSC operator checks the Digital Path on the active RBLT. 4. Remove the PCM cable plug from the Loop forward/backward board and reconnect it to the socket in the IXU. 5.
RBS 2109 User’s Guide 7. 8.1.2 Enter Pass/Fail in the test record, see Section 8.4.2 Filling in the Test Record on page 152. Transmission Test on T1 This section describes how to test transmission, when the T1 transmission interface is used. Note: Transmission test on T1 can also be performed in the same way as E1, according to Section 8.1.1 on page 144. 1. Request that the BSC operator uses CSU functions. 2. Configure the RBS for CSU, using OMT, and restart the RBS.
RBS 2109 User’s Guide The RBS now downloads and executes the commands previously prepared by the BSC operator. When the Local indicator turns off, the RBS is in remote mode. 5. Check that all RRUs are in Remote Mode by confirming that the Local indicator on each RRU is off. 6. If BTS PCM Supervision is used, then wait for the BSC operator to activate it and check that MO DP state is operational. 7. Wait for the BSC operator to activate and check the cell. 8.
RBS 2109 User’s Guide TEMS Min 50 P010288A Figure 71 8.3.1 Distance From the Antenna System During Test Call Using TEMS Making Test Call Using TEMS This section describes how to make a test call using a TEMS and a PC with TEMS SW. The test confirms that all TSs on all TRXs work properly. The test record should be completed during the test. See Section 8.4.2 Filling in the Test Record on page 152. 1. Connect the TEMS cable between the TEMS and the PC COM port 1 on the PC containing TEMS SW. 2.
RBS 2109 User’s Guide Table 46 Defining the External Connections Definition Port MS1 Port COM1 MS2 Port N/A Position Port N/A 4. In the Control menu, select Test of TCH. Enter the following parameters: • Telephone number • Frequency (ARCFN) • Broadcast Channel (BCCH) • Frequency for the Traffic Channel (TCH) 5. Select the TSs used for traffic and click on Add. The BCCH and SDCCH channels are used for signalling and do not carry traffic. Do not make test calls on these TSs.
RBS 2109 User’s Guide 9. Request the BSC operator to block all TRXs except for the one being tested, and check that BCCH and SDCCH are configured. 10. Make a test call from the TEMS. 11. Request the BSC operator to check that the TCH being tested is busy. Verify the speech quality and write ‘‘Pass’’ or ‘‘Fail’’ in the test record. See Section 8.4.2 Filling in the Test Record on page 152. 12. Terminate the call. 13. Request the BSC to check that the tested TCH is released. 14.
RBS 2109 User’s Guide 5. Monitor the signal strength (RxLev) and move through the cells to verify that handover takes place between cells at the cell borders. See figure below. TEMS P010289A Figure 72 Verifying that Handover Takes Place at the Cell Borders 6. Write ‘‘Pass’’ or ‘‘Fail’’ in the test record. See Section 8.4.2 Filling in the Test Record on page 152. 7. Terminate the call and stop the log. 8.
RBS 2109 User’s Guide Table 47 RRU Indicators After Site Integration RRU Indicator State Fault Off Operational On Local Off RF off Off AC power on On (1) DC power on On (1) RRU temp. Off (1) Depending on power system configuration. Table 48 IXU Indicators After Site Integration IXU Indicator State Fault Off Operational On Local Off RBS fault Off External alarm Off AC power on On (1) DC power on On (1) IXU temp.
RBS 2109 User’s Guide RBS Site Integration GSM - Date: Site Name: Site No.
RBS 2109 User’s Guide 8.4.3 Filling in the Checklist This section describes the checklist to be filled in after the integration has been completed. The following checklist is not mandatory but it is strongly recommended. Local procedures and safety regulations must be evaluated and included in this checklist. Table 49 Checklist Check the following: 8.4.4 OK 1. The indicators on the RRU and the IXU are in the approved status. 2. The test equipment has been disconnected from the RBS. 3.
RBS 2109 User’s Guide NETWORK ELEMENT ACCEPTANCE CERTIFICATE This is to certify that Ericsson AB has delivered, installed and tested the Network Element ............................................................ as defined in contract .................. The Network element acceptance has been performed in accordance with the procedures described in the above mentioned contract. Further reference should be made to the acceptance documents.
RBS 2109 User’s Guide 156 EN/LZT 720 0090 Uen R1A 2004-09-17
RBS 2109 User’s Guide 9 Maintenance This chapter describes the maintenance procedures for the RBS 2109. 9.1 Introduction 9.1.1 Target Group The target group for this document is maintenance personnel. To perform maintenance work in a safe and professional way, the work must be done by skilled personnel. The following qualifications are minimum requirements: 9.
RBS 2109 User’s Guide Table 51 9.3 Connectors Connector Torque Nm Remark TNC 1.7 Nm +/- 0.15 Nm — N 2.7 Nm +/- 0.2 Nm — Fault Localisation Using OMT This section contains information on how to localise a fault when handling an alarm in the OMT. Ericsson recommends that the OMT is used, but if no OMT is available, or it is not possible to connect to the RBS, see Section 9.4 Troubleshooting Using the RBS Indicators on page 175.
RBS 2109 User’s Guide For supplementary information about RU maps, see: Fault List Micro 9.3.1 EN/LZT 720 0466 Reading Fault Status This section describes how to read the fault status, using the OMT. If any fault indicator on the RBS is on, then the fault status must be read. Connect the OMT 1. Remove the lid from the OMT port on the IXU. 2. Connect the OMT cable from the PC serial port 1 to the OMT port on the right-hand side of the IXU.
RBS 2109 User’s Guide P010476A Figure 76 Reading Fault Status 7. In the Available monitors box, select ‘‘MO fault maps’’ and click → to add ‘‘RBS’’ into the Monitors to start box. 8. Click Start monitor. 9. In the RBS Event Monitor window, check the MO faults box to see if there are any faults. If there are, then correct these before continuing. When an MO fault is selected, corresponding fault description, action and related faults are displayed. See also Fault List. 10.
RBS 2109 User’s Guide Related RUs The RUs listed below have higher priority than the RU described in this section. If they are present, then proceed to the related section before handling this RU. • If ‘‘SO CF RU:34/ IDB’’ appears in the OMT, then proceed with Section 9.3.8 SO CF RU:34/ IDB on page 169. • If ‘‘SO CF RU:3/ Y link’’ appears in the OMT, then proceed with Section 9.3.3 SO CF RU:3/ Y Link on page 161. Displaying Fault Information Display fault information according to Section 9.3.
RBS 2109 User’s Guide Perform the following actions step-by-step until the fault ceases: Checking IDB Configuration 1. In the OMT, ensure that the IDB is in accordance with the HW cabinet configuration. Checking RRU Power Perform the following actions step-by-step until the fault ceases, or until the RRU power is confirmed. Note: This is only valid for an RRU connected to the Y link-generated alarm. 2. Check that the indicators AC Power on/DC Power on on the RRU interface panel are ON. 3.
RBS 2109 User’s Guide 1 2 6 5 3 Not used P010607A Figure 77 Table 52 Measuring Voltage on RRU Power Cable Pins and Functions Connector Pin Function 1 DC_P 2 DC_N 3 PE 5 AC_L2 6 AC_L1 Resetting RRU 6. Press the RRU reset button on the RRU interface panel connected to the faulty Y link Resetting IXU 7.
RBS 2109 User’s Guide 8. Check that the Y link cable is correctly connected to both the IXU and the RRU 9. Check that the cable is free from damage 10. If the Y Link cable is damaged, replace it according to Section 9.5.10 Y Link Cable Replacement on page 215 Replacing the RRU 11. Replace the RRU, see Section 9.5.7 RRU Replacement on page 208 Replacing the IXU 12. Replace the IXU, see Section 9.5.3 IXU Replacement on page 195 9.3.
RBS 2109 User’s Guide Resetting IXU 3. Press the IXU reset button on the IXU interface panel. Replacing IXU 4. Replace the IXU, see Section 9.5.3 IXU Replacement on page 195. 9.3.5 SO CF RU:14/ Battery This section describes how to localise an SO CF RU:14/ Battery fault. Related RUs • If ‘‘SO CF RU:31/ Environment’’ appears in the OMT, together with ‘‘SO CF EC2:10/ Mains fail (external power source fail)’’, then proceed with Section 9.3.7 SO CF RU:31/ Environment on page 167.
RBS 2109 User’s Guide Related RU The RU listed below has higher priority than the RU described in this section. If it is present, go to the related section before handling this RU. • If ‘‘SO CF RU:34/ IDB’’ appears in the OMT, then proceed with Section 9.3.8 SO CF RU:34/ IDB on page 169 Displaying Fault Information Display fault information according to Section 9.3.1 Reading Fault Status on page 159. Perform the following actions step-by-step until the fault ceases. Checking IDB Configuration 1.
RBS 2109 User’s Guide FAN UNT-01 Fault Test Operational P010581A Figure 78 Fan Unit Test Button 5. Check that the test sequence below is carried out: • The fans run at maximum speed for approximately 5 seconds • The fans run at nominal speed for approximately 5 seconds • The fans stop for approximately 5 seconds 6.
RBS 2109 User’s Guide Displaying Fault Information Display fault information according to Section 9.3.1 Reading Fault Status on page 159. Perform the following actions step-by-step until the fault ceases: Checking IDB Configuration 1. Check in the OMT that the IDB configuration is correct, according to the HW cabinet configuration, regarding defined power system and climate system. Checking Climate 2. Inspect the airflow path in the RBS, and ensure that the airflow is not obstructed. 3.
RBS 2109 User’s Guide Checking Incoming DC Power (Optional) 5. Open the MBU cover and use a multimeter to check that the voltage, supplying the RBS, is between – 40.5 and – 57 V DC. If DC supply is not detected, then check the DC supply source. P010497A Figure 80 9.3.8 Measuring Incoming DC Voltage SO CF RU:34/ IDB This section describes how to localise an SO CF RU:34/ IDB. Displaying Fault Information Display fault information according to Section 9.3.1 Reading Fault Status on page 159.
RBS 2109 User’s Guide 9.3.9 SO CF RU:40/ Antenna This section describes how to localise an SO CF RU:40/ Antenna fault. Related RU The RU listed below has higher priority than the RU described in this section. If it is present, then go to the related section before handling this RU. • If ‘‘SO CF RU:34/ IDB’’ appears in the OMT, then proceed with Section 9.3.8 SO CF RU:34/ IDB on page 169 Displaying Fault Information Display fault information according to Section 9.3.1 Reading Fault Status on page 159.
RBS 2109 User’s Guide Performing DTF Test 10. Disconnect the faulty feeder and locate the fault, by performing a Distance To Fault (DTF) test. For more information, see chapter Antenna System Tests in this manual. 11. Replace the faulty equipment identified in the DTF test. Note: The RXBP are not included in the DTF test. 12. If no faulty equipment was identified, replace the antenna. 9.3.10 SO CF RU:48/ GPS Receiver This section describes how to localise an SO CF RU:48/ GPS Receiver.
RBS 2109 User’s Guide Related RUs The RUs listed below have higher priority than the RU described in this section. If they are present, go to the related section before handling this RU. • If ‘‘SO CF RU:34/ IDB’’ appears in the OMT, then proceed with Section 9.3.8 SO CF RU:34/ IDB on page 169 • If ‘‘SO CF RU:0/ IXU’’ appears in the OMT, then proceed with Section 9.3.2 SO CF RU:0/ IXU on page 160 Displaying Fault Information Display fault information according to Section 9.3.
RBS 2109 User’s Guide P011186A Figure 81 Cable Connection Check 48 V 48 V_RTN - 48 V LINK P010514A Figure 82 Connector Connection Check 7. Perform a cold reset on the GPS by disconnecting the termination block for a few seconds. 8. Check that both the – 48 V LINK cable and the conductor are free from damage. Replace if needed. 9. Check that the voltage is – 48 V DC, using a multimeter.
RBS 2109 User’s Guide 2 mm P011187A Figure 83 9.3.12 Voltage Check SO TRXC RU:0/ RRU This section describes how to localise an SO TRXC RU:0/ RRU fault. Related RUs The RUs listed below have higher priority than the RU described in this section. If they are present, go to the related section before handling this RU. • If ‘‘SO CF RU:3/ Y link’’ appears in the OMT, then proceed with Section 9.3.
RBS 2109 User’s Guide Resetting RRU 1. Press the RRU reset button on the RRU interface panel. Restarting RRU 2. Switch off the RRU, wait for one minute and switch it on again. Replacing RRU 3. Replace the RRU, see Section 9.5.7 RRU Replacement on page 208. 9.4 Troubleshooting Using the RBS Indicators This section describes troubleshooting procedures using the RBS indicators. If no faults are detected in the RBS, then the indicators should be in accordance with the tables below.
RBS 2109 User’s Guide Table 55 IXU Indicator Status When the RBS is in Operation IXU temp. Off Transmission OK On (2) (1) Depending on power system configuration. (2) A, B, C and/or D, depending on transmission configuration. If the indicators indicate a fault, see the applicable Section below. 9.4.1 Corrective Actions for the IXU Fault If the fault indicator is ON (red), IXU HW fault(s) are detected.
RBS 2109 User’s Guide If the Local indicator is flashing (yellow) and the anticipated BSC communication cannot be established, then perform the following actions step-by-step (in close cooperation with the BSC operator) until the fault ceases: • Reset the IXU • Ensure that the expected Transmission OK LEDs are ON Note: Transmission OK LEDs only indicate that the incoming transmission signal is present electrically. The physical transmission connection should still be checked.
RBS 2109 User’s Guide 1. Start the OMT. 2. In the Maintenance menu, select Monitor. 3. Select External Alarms Status and click Start Monitor. 4. In the Available monitors box, select “MO fault maps” and click → to add “RBS” in the Monitors to start box. 5. Check the Display Status window to see which external alarms are active. 6. Check that the external alarm are correcly defined in the IDB 7. When the faults are corrected, close the Display Status window.
RBS 2109 User’s Guide 1 6 2 5 3 Not used P010615A Figure 85 Table 56 Measuring AC Voltage on IXU Power Cable Pins and Functions Connector Pin Function 1 DC_P 2 DC_N 3 PE 5 AC_L2 6 AC_L1 • Replace the PIB in the MBU, see Section 9.5.5 PIB Replacement on page 202 • Replace the IXU, see Section 9.5.
RBS 2109 User’s Guide • Open the MBU cover and use a multimeter to check that the incoming voltage is between – 40.5 V DC and – 57 V DC P010497A Figure 86 • Measuring Incoming DC Voltage Disconnect the power cable from the IXU and use a multimeter to check that the voltage, supplying the IXU, is between – 40.
RBS 2109 User’s Guide Table 57 Pins and Functions Connector Pin Function 3 PE 5 AC_L2 6 AC_L1 • Replace the PIB in the MBU, see Section 9.5.5 PIB Replacement on page 202 • Replace the IXU, see Section 9.5.
RBS 2109 User’s Guide 9.4.2 • Swap the cable thread pairs • Perform a transmission test, see chapter RBS Site Integration • Check the transmission cable. If it is faulty, replace it • Replace the TIM, see Section 9.5.6 TIM Replacement on page 205. • Replace the IFB, see Section 9.5.2 IFB Replacement on page 191. Corrective Actions on the RRU Fault If the fault indicator is ON (red), an RRU HW fault(s) is detected.
RBS 2109 User’s Guide • Ensure that the BSC has a correct configured A-bis path to the RBS [Digital Connection Point (DCP)]. • Reset the RRU • Ensure that the Y link cable is undamaged and properly connected to the correct ports, both on the RRU and the IXU • Check that each transmission line is connected to the correct ports in both the RRU and the IXU Note: The IXU could be able to establish BSC connection even if the transmission lines have been connected to the ports wrongly.
RBS 2109 User’s Guide P010498A Figure 88 • Measuring Incoming AC Voltage Disconnect the power cable from the RRU and use a multimeter to check that the power supply to the RRU, is either 100 V AC to 127 V AC, or 200 V AC to 250 V AC, see table below.
RBS 2109 User’s Guide Table 58 Pins and Functions Connector Pin Function 1 DC_P 2 DC_N 3 PE 5 AC_L2 6 AC_L1 • Replace the PIB in the MBU, see Section 9.5.5 PIB Replacement on page 202 • Replace the RRU, see Section 9.5.
RBS 2109 User’s Guide • Disconnect the power cable from the RRU and use a multimeter to check that the voltage, supplying the RRU, is between − 40.5 and − 57 V DC. See figure and table below. 1 2 6 5 3 Not used P010607A Figure 91 Table 59 Measuring the Voltage on RRU Power Cable Pins and Functions Connector Pin Function 1 DC_P 2 DC_N 3 PE 5 AC_L2 6 AC_L1 • Replace the PIB in the MBU, see Section 9.5.5 PIB Replacement on page 202 • Replace the RRU, see Section 9.5.
RBS 2109 User’s Guide • Ensure that airflow is not obstructed above or below the RRU, or through its cooling flanges • Install a fan unit to the RRU • Install the RRU cabinet at a colder location If the RRU temp indicator is ON (yellow) and the conditions are cold, perform the following actions step-by-step until the fault ceases: Note: 9.5 The RRU will not start if it is too cold. It can take up to 75 minutes for the internal heater to warm up the RRU.
RBS 2109 User’s Guide Taking the RBS Out of Operation 1 Open the sunshields. 2 Contact the OMC operator to obtain permission to temporarily take cells out of service. Wait until the RF off indicator (on all RRU interface panels) shows a continous light. 3 Press the Local/Remote button on the IXU to set the RBS to local mode. Wait until the local indicator on the IXU shows a continous light. 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches.
RBS 2109 User’s Guide Replacing Flash Card 6 Disconnect the AC/DC cable and the earth cable from the IXU. P010569A 7 Disconnect the OMT cable. 8 Open the IXU cover. P010357B 9 Remove the connection frame and loosen the cables from the IFB. Remove the Y link cable(s).
RBS 2109 User’s Guide Note: 10 Make a note of which connectors the Y link cables were connected to. Loosen the two securing screws under the IXU and remove the unit. P010365B 11 Remove the cover for the flash card. To remove the flash card, lift up the release lever and then push it in. P010366A 12 Note: 190 Insert the new flash card, reset the lever, then refit the cover. The flash card should be preloaded with the correct software and IDB. For instructions, see Chapter Site Installation Tests.
RBS 2109 User’s Guide Taking the RBS Into Operation 17 Switch on the appropriate power supply: AC Mains, DC, or both AC and DC. 18 If new SW has earlier been prepared for loading, it now starts. This may take up to 10 minutes. 19 Close the RRU. 20 Inform the OMC operator that the applicable cells are to be taken into service. 21 Press the Local/Remote button on the IXU, and the RRUs to set the RBS to remote mode.
RBS 2109 User’s Guide 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches. P010396A 5 Switch off AC Mains power and DC power supply.
RBS 2109 User’s Guide Replacing IFB 6 Open the IXU cover. P010357B 7 Remove the connection frame and all cables from the IFB. P010358A 8 Loosen, but do not remove, the Y link cable(s) from the cable inlet.
RBS 2109 User’s Guide 9 Remove the TIM after loosening the three screws. (x 3) P010374B 10 Remove the IFB after loosening the seven screws. P010360A 11 Put back the new IFB, the connection frame, and all cables. 12 Put back the TIM. Tighten the screws to 1.7 Nm. 13 Secure the Y link cable(s). 14 Reconnect the IXU cover. Taking the RBS Into Operation 194 15 Switch on the appropriate power supply: AC Mains, DC, or both AC and DC. 16 Close the RRU.
RBS 2109 User’s Guide Handling Replaced Units Unless under contractual warranty, after replacement, the IFB should be disposed of locally by the customer according to environmental regulations. Do not return the IFB to Ericsson for replacement, repair or disposal. 9.5.3 IXU Replacement This section describes how to replace a faulty IXU. Taking the RBS Out of Operation 1 Open the sunshields. 2 Contact the OMC operator to obtain permission to temporarily take cells out of service.
RBS 2109 User’s Guide 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches. P010396A 5 Switch off AC Mains power and DC power supply. AC DC P010517A Replacing IXU 6 Disconnect the AC/DC cable and the earth cable. P010569A 7 196 Remove the OMT cable.
RBS 2109 User’s Guide 8 Open the IXU cover. P010357B 9 Remove the connection frame and loosen the cables from the IFB. Remove the Y link cable(s). P010363A Note: Make a note of which connectors the Y link cables were connected to.
RBS 2109 User’s Guide 10 Loosen the two securing screws under the IXU, and remove the unit. P010365B 11 Remove the TIM from the faulty IXU after loosening the three securing screws. P010367A 12 Remove the cover for the flash card. To remove the flash card, lift up the release lever and then push it in.
RBS 2109 User’s Guide 13 Remove the cover for the flash card. Insert the old flash card in the new unit and push it down and reset the release lever, ensuring that the flash card is in position. 14 Open the cover of the new IXU and insert the TIM. Tighten the screws to 1.7 Nm. Note: Ensure that the switch positions on the TIM are correct. 15 Mount the connection frame delivered with the new IXU into the old IXU, and close the cover. 16 Mount the IXU and secure it with the two screws under the IXU.
RBS 2109 User’s Guide Caution! Rotating fan blades can cause injury to body parts that come into contact with the blades. Blades in fan units continue to rotate for a period of time, even after the fan has been switched off. Wait until fans have stopped rotating completely before starting work on or near fans. Replacing Fan Unit 1 Remove the fan unit cover P011263A 2 Disconnect the fan power cable from the RRU. P010543B 3 Loosen the three screws and remove the fan unit.
RBS 2109 User’s Guide 4 Install the new fan unit and fasten the three screws. P010496A 5 Connect the fan power cable to the RRU. P010543A Testing Fan Unit 6 Press the Test button on the fan unit.
RBS 2109 User’s Guide The fan unit performs a self test 7 Check that the test sequence below is carried out: • The fans run at maximum speed for approximately 5 seconds • The fans run at nominal speed for approximately 5 seconds • The fans stop for approximately 5 seconds 8 Ensure that the indicator status of the fan unit is in accordance with the table below: Table 60 Fan Unit Indicators After Test Fan Unit Indicator Status Fault Off Operational On 7. Reinstall the fan unit cover.
RBS 2109 User’s Guide 3 Press the Local/Remote button on the IXU to set the RBS to local mode. If it is an extension cabinet, press the Local/Remote button on the RRU to set the unit to local mode. 4 Switch off the AC and DC switches on the MBU. 5 Switch off the AC Mains power and DC power supply outside the cabinet. Replacing PIB 6 Open the two clasps and pull the RRU to the left side, to gain access to the power switches. P010396A 7 Remove the MBU cover.
RBS 2109 User’s Guide 8 Disconnect the upper AC/DC cables and the applicable power cable at the bottom. P010372A 9 Remove the PIB after loosening the securing screws. (x8) P010373B Note: 10 Insert the new PIB and secure it. 11 Ensure that the ground selector swicth is in the correct position. Note: 204 Be careful not to drop the washer attached behind the lower left screw when loosening it. Remember to insert the washer behind the lower left screw. 12 Reconnect the upper AC/DC cables.
RBS 2109 User’s Guide 16 Switch on the AC and DC switches. 17 Close the RRU. Taking the RBS Into Operation 18 Switch on the AC Mains power and DC power supply outside the cabinet. 19 Inform the OMC operator that the applicable TRXs are to be taken into service. 20 Press the Local/Remote button on the IXU to set the units to remote mode. If it is an extension cabinet, press the Local/Remote button on the RRU to set the unit to remote mode.
RBS 2109 User’s Guide 3 Press the Local/Remote button on the IXU to set the RBS to local mode. Wait until the local indicator on the IXU shows a continous light. 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches. P010396A 5 Switch off the AC Mains power and DC power supply.
RBS 2109 User’s Guide Replacing TIM 6 Open the IXU cover. P010357B 7 Remove the TIM after loosening the three screws securing it.
RBS 2109 User’s Guide 8 Mount the new TIM and ensure that the switches are set correctly. Tighten the screws to 1.7 Nm. TIM Port A Port C 100/ 120 75 100/ 75 120 Port A Port B Port D 100/ 120 75 100/ 75 120 Port C 100/ 75 100/ 75 120 120 Port B Port D 100/ 100/ 120 75 120 75 P010154D 9 Close the IXU cover Taking the RBS Into Operation 10 Switch on the AC and DC switches. 11 Close the RRU. 12 Inform the OMC operator that the applicable cells are to be taken into service.
RBS 2109 User’s Guide Taking the RRU Out of Service 1 Open the sunshields. 2 Contact the OMC operator to obtain permission to temporarily take the TRXs connected to the RRU out of service. Wait until the RF off indicator shows a continous light. 3 Press the Local/Remote button on the RRU to set the unit to local mode. Wait until the local indicator on the RRU shows a continous light. 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches.
RBS 2109 User’s Guide 5 Switch off the RRU power. RRU P010369A 6 Remove any optional units mounted on the RRU, and, if applicable, the upper sunshield. Replacing RRU 7 Disconnect the earth cable P010518A 8 Remove the protection cover.
RBS 2109 User’s Guide 9 Remove the cables belonging to the RXBP (if present) from the RRU. Remove the RXBP after loosening the securing screws. RXBP RX 2 RX 1 RXBP 2 RXBP1 P010376A 10 Disconnect the Y link cable and the AC/DC cable from the RRU.
RBS 2109 User’s Guide 11 Loosen the screw under the RRU and unhook the RRU. P010378B 12 Hang the new RRU onto the upper hinge. Position the lower hinge and tighten the screw. 13 Connect the earth cable, AC/DC cable and Y link cable. 14 Mount the RXBP (if required) and connect all cables. 15 Fit the protection cover under the RRU. Taking the RRU Into Service 16 Switch on the RRU power and close the RRU. 17 Put back the sunshield and fan unit, if present.
RBS 2109 User’s Guide 9.5.8 RXBP Replacement This section describes how to replace a faulty RXBP. Taking the RRU Out of Service 1 Open the sunshields. 2 Contact the OMC operator to obtain permission to temporarily take the TRXs connected to the RRU out of service. Wait until the RF off indicator shows a continous light. 3 Press the Local/Remote button on the RRU to set the unit to local mode. Wait until the local indicator on the RRU shows a continous light.
RBS 2109 User’s Guide Taking the RRU Into Service 6 Inform the OMC operator that the TRXs connected to the RRU are to be taken into service. 7 Press the Local/Remote button on the RRU to set the unit to remote mode. Wait until the RF off indicator on the RRU interface panel extinguishes and the Operational indicator illuminates. 8 Close the sunshields.
RBS 2109 User’s Guide 3 If a fan unit is used, then install the fan unit cover on top of the RRU, see Figure below. P010515A 4 Attach the front sunshield to the left sunshield. 5 Close the front sunshield and attach it to the top shield (fan unit cover) and to the right sunshield. 6 Lock the shield. Handling Replaced Units Unless under contractual warranty, after replacement, the sunshield should be disposed of locally by the customer according to environmental regulations.
RBS 2109 User’s Guide Taking the RRU Out of Service 1 Open the sunshields. 2 Contact the OMC operator to obtain permission to temporarily take the TRXs connected to the RRU out of service. Wait until the RF off indicator shows a continous light. 3 Press the Local/Remote button on the RRU to set the unit to local mode. Wait until the local indicator on the RRU shows a continous light. 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches.
RBS 2109 User’s Guide Replacing Y Link Cable 6 Open the IXU cover. P010357B 7 Remove the faulty Y link cable from the IXU. Remove the cable from the RRU by opening the Y link cover and disconnecting it. RRU IXU P010379A 8 Connect the new Y link cable to the RRU and close the cover. 9 Connect the new Y link cable to the IXU and close the cover. 10 Switch on the RRU power and close the RRU. Taking the RRU Into Service 11 Inform the OMC operator that the RRU is to be taken into service.
RBS 2109 User’s Guide 9.5.11 Performing Concluding Routines This section describes the routines to be completed before leaving the site. Note: Ericsson strongly advises that when cleaning up after maintenance work on the RBS cabinet, the personnel performing maintenance pay particular attention to the environment. Recycle all waste materials that can be recycled and sort waste so that it can be disposed of according to local regulations.
RBS 2109 User’s Guide Check that the indicators on the RRU(s) and the IXU have the status shown in the tables below: Table 62 RRU Indicators After Maintenance RRU Indicator State Fault Off Operational On Local Off RF off Off AC power on On (1) DC power on On (1) RRU temp. Off (1) Depending on power system configuration.
RBS 2109 User’s Guide Table 64 Checklist Check the following: 220 OK 1 The indicators on the RRU and the IXU are in the approved status. 2 The test equipment has been disconnected from the RBS 3 The RBS cabinet and the mounting base are free from foreign objects. 4 All cabinets and cables are free of damage. 5 All EMC sealants and cable penetrations are intact. 6 Top and bottom of cabinet are free of obstructions (for airflow).
RBS 2109 User’s Guide 10 Glossary This glossary lists abbreviations and acronyms used in texts dealing with RBS 2000 cabinets. Some basic terms and acronyms needed for cross-reference are included in the list. Terms and Abbreviations An arrow ⇒ is used to indicate a reference to another entry in the list.
RBS 2109 User’s Guide AMR Adaptive Multi-Rate AO Application Object ARAE Antenna Related Auxiliary Equipment ARFCN Absolute Radio Frequency Channel Number ARP Antenna Reference Point ARU Active Replaceable Unit ASIC Application Specific Integrated Circuit ASU Antenna Sharing Unit AT Alphanumeric Terminal ATRU Adaptive Transceiver Unit ATSR Air Time Slot Resource AU Antenna Unit AWG American Wire Gauge BALUN BALance and UNbalance transformer Batt Battery BB Battery Box BBS B
RBS 2109 User’s Guide Bias injector A unit which injects DC power into the coaxial cable to feed the TMA. Isolates the DC power from the RF signal fed to the CDU. Bm Denotes a full-rate traffic channel BPC Basic Physical Channel Denotes the air interface transport vehicle formed by repetition of one time slot on one or more radio frequency channels. BS Base Station BSC Base Station Controller GSM network node for control of one or more BTSs.
RBS 2109 User’s Guide • AGCH Access Grant CHannel CCU Climate Control Unit CDU Combining and Distribution Unit CE Conformité Européenne cell An area of radio coverage identified by the GSM network by means of the cell identity. CEU Coverage Extension Unit CF Central Functions channel The common term channel denotes the virtual connection, consisting of physical and logical channels, between BSS and MS, during a call in progress.
RBS 2109 User’s Guide Ericsson digital land mobile telecommunication system based on the Joint Technical Committee (JTC) specification for PCS 1900. CNU Combining Network Unit Compr Compressor CON LAPD concentrator LAPD concentration is used to reduce the number of required physical links between the BSC and BTS. Config Configuration Co-siting Co-siting is the operation of radio equipment from more than one mobile telephone system and/or frequency on the same site sharing common equipment.
RBS 2109 User’s Guide DCCU DC Connection Unit ddTMA dual duplex Tower Mounted Amplifier DF Distribution Frame DF Disturbance Frequency DFU Distribution and Fuse Unit DIP DIgital Path The name of the function used for supervision of the connected PCM lines. DM Degraded Minute DM Distribution Module DMRU Distributed Main Replaceable Unit If a Main RU is subordinated to the CMRU, it is said to be distributed. 226 downlink Signalling direction from the system to the MS.
RBS 2109 User’s Guide DXC Digital Cross Connector DXU Distribution Switch Unit DXX Ericsson Cellular Transmission System including NMS E1 Transmission standard, G.
RBS 2109 User’s Guide ESO Ericsson Support Office ETS European Telecommunication Standard ETSI European Telecommunication Standard Institute. EXT External FACCH Fast Associated Control CHannel Main signalling channel in association with a TCH.
RBS 2109 User’s Guide GSL GPRS Signalling Link GSM Global System for Mobile communications International standard for a TDMA digital mobile communication system. Originally, GSM was an abbreviation for Group Special Mobile, which is a European mobile telecommunication interest group, established in 1982.
RBS 2109 User’s Guide I1B Internal Fault Map Class 1B I2A Internal Fault Map Class 2A IA Immediate Assignment IC Integrated Circuit ICMI Initial Codec Mode Indicator ID Identity IDB Installation DataBase IDM Internal Distribution Module IEC International Electric Commission IFB Interface Board IF Box Interface Box IMSI International Mobile Subscriber Identity INIT Initial INT Internal IOG Input/Output Group IOM Internal Operation and Maintenance bus IR InfraRed IS Interfa
RBS 2109 User’s Guide LBO Line Build Out LED Light Emitting Diode LLB Line Loop Back LNA Low Noise Amplifier Local bus The local bus offers communication between a central main RU (DXU) and distributed main RUs (TRU and ECU). Local mode When the RU is in Local mode, it is not communicating with the BSC. Local/Remote switch A switch used by the operator to order the RU to enter Local or Remote mode.
RBS 2109 User’s Guide MCB MultiCasting Box MHS Modification Handling System Ericsson trouble report database MiniLink Ericsson’s microwave transmission system. MMI Man-Machine Interface MO Managed Object MR Measurement Receiver MRT Mean Repair Time MS Mobile Station MSC Mobile services Switching Centre GSM network unit for switching, routing and controlling calls to and from the Public Switched Telephone Network (PSTN) and other networks.
RBS 2109 User’s Guide General term for activities such as configuration, utilization of channels (frequency bands), cell planning, system supervision, hardware and software maintenance, subscriber administration, and so on. OMC Operation and Maintenance Centre OML Operation and Maintenance Link Layer 2 communication link for operation and maintenance services on Abis. OMT Operation and Maintenance Terminal The OMT is a PC application for O&M of an RBS.
RBS 2109 User’s Guide PCU Packet Control Unit PDCH Packet Data Channel PE terminal Protective Earth terminal in an AC mains connection PFWD Power Forward Physical Channel An air interface physical channel carries one or more logical channels. A physical channel uses a combination of frequency and time division multiplexing and is defined as a sequence of radio frequency channels and time slots.
RBS 2109 User’s Guide RAM Random Access Memory RBER Radio Bit Error Ratio RBS Radio Base Station All equipment forming one or more Ericsson base station. ⇒ BTS RCB Radio Connection Box RD Receive Data Remote mode When the RU is in RU Remote mode, a link is established between the BSC and the Central Main RU (CMRU). RF Radio Frequency RFCH Radio Frequency CHannel A radio frequency carrier with its associated bandwidth.
RBS 2109 User’s Guide RX2 Receiver antenna branch 2 RXA Receiver antenna branch A RXB Receiver antenna branch B RXBP Receiver BandPass filter RXD Receiver Divider RXDA Receiver Divider Amplifier RXDP Receiver Distribution Plane RXLEV Measure of signal strength as defined in GSM:05.08:8.1.4 RXQUAL Measure of signal quality as defined in GSM:05.08:8.2.
RBS 2109 User’s Guide SS Swedish Standard sTRU single Transceiver Unit Sub-RU A sub-replaceable unit is always connected to a superior Main RU. This connection is used for example for retrieval of the RU identity. A sub-RU normally does not have a processor. Note that an RU with a processor, which cannot be loaded, is classified as a sub-RU. SVS System Voltage Sensor SW SoftWare SWR Standing Wave Ratio SYNC Synchronous T1 Transmission standard, G.
RBS 2109 User’s Guide TEI Terminal Endpoint Identifier TEI is an identification code carried by a LAPD frame as a terminal connection endpoint within a Service Access Point (SAP). TEMS TEst Mobile Station TF Timing Function TG Transceiver Group TIM Transmission Interface Module Timing bus The timing bus carries air timing information from the timing unit in the DXU to the TRUs.
RBS 2109 User’s Guide ⇒ Burst TT Total Time TU Timing Unit TX Transmitter TXA Transmitter Antenna A TXB Transmitter Antenna B TXBP Transmitter BandPass filter TXU Radio Transmitter Unit UAS Unavailable Seconds UAST UnAvailable STate supervision UL Underwriter Laboratories uplink Signalling direction from the MS to the system. UPS Uninterrupted Power Supply VCO Voltage Controlled Oscillator VSWR Voltage Standing Wave Ratio RF signal measure.
