ADC Telecommunications DLCSMR3D Digivance LRCS SMR Dual Band System User Manual 75179

ADC Telecommunications Inc Digivance LRCS SMR Dual Band System 75179

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ADCP-75-179 • Preliminary Issue A • September 2004 • Section 3: OperationPage 3-11© 2004, ADC Telecommunications, Inc.2. Click on the HOST Site Name Edit button (see Figure 3-6). The Site Name pop-upscreen will open as shown in Figure 3-7. Enter a unique name for the HOST. The namemay be up to 32 characters long and must not contain any spaces. The name may includenumbers, punctuation, and upper or lower case letters and must always begin with a letter.Click on OK to close the screen and make the changes take effect. Figure 3-7. HOST Site Name Pop-Up Screen3. Click on the HOST Site Number Edit button (see Figure 3-6). The Site Number pop-upscreen will open. Enter any number (must be unique) between 1 and 24 and then click onOK to close the screen and make the changes take effect. 4. Check the REMOTE Site Number field (see Figure 3-6). The REMOTE Site Numberdoes not have to be entered. When the HOST Site Number is entered, the system willautomatically enter the same number for the REMOTE Site Number. 5. Click on the REMOTE Site Name Edit button (see Figure 3-6). The Site Name pop-upscreen will open. Enter a unique name for the REMOTE. The name may be up to 32characters long and must not contain any spaces. The name may include numbers,punctuation, and upper or lower case letters and must always begin with a letter. Click onOK to close the screen and make the changes take effect. 6. Open the Tools menu at the top of the main window and then select Refresh Catalog tomake the new Host and Remote site names appear in the View menu. 2.5 Enter Host Forward AttenuationThe HU internal forward path attenuator setting determines the maximum composite outputsignal level at the STM antenna port. The appropriate attenuation value for any particularsystem is based on the number of channels the system is transporting and the signal level of thecomposite forward path signals input at the host units RF IN ports. By default, the forward pathattenuator is set to 31 dB. The maximum output power that can be provided by the system is 43.4 dBm (22 Watts). Thetotal forward path gain that is provided by the system (with host and remote forward attenuatorsset to 0 dB) is 85 dBm. Use the following procedure to set the forward path attenuation toprovide the maximum composite output signal level: 1. Click on the HOST RF tab. The HOST RF display will open within the EMS mainwindow as shown in Figure 3-8.
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 3: OperationPage 3-12© 2004, ADC Telecommunications, Inc.Figure 3-8. HOST RF Display2. Click on the Host Fwd Att Edit button (see Figure 3-8). The Host Fwd Att pop-up screenwill open as shown in Figure 3-9. Figure 3-9. Host Fwd Att Pop-Up Screen3. Obtain the value of the total composite input signal level as determined in step 11 ofSection 2.3. 4. Determine the appropriate value to enter for the Host forward path attenuator bysubtracting the required system output level (per system design plan) from the system gain(85 dB) and then adding the composite input signal level. The result (see samplecalculation) is the amount of attenuation required. Atten = (System Gain) – (Required System Output Power) + (Composite Input Power)5. Enter the attenuation value and click OK to close the pop-up screen and to make thechanges take effect. Click on Edit buttonto open Host FwdAtt pop-up screen
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 3: OperationPage 3-13© 2004, ADC Telecommunications, Inc.2.6 Determine Output Signal Level at STM Antenna PortThe RF output signal level should be measured at the STM ANTENNA port to verify thatmaximum composite signal level is at the required level. Use the following procedure todetermine the power level:1. Verify that RF ON/OFF switch on the LPA is in the OFF position. 2. Disconnect the antenna cable from the STM ANTENNA port. 3. Connect a spectrum analyzer or RF power meter to the STM ANTENNA port. (Check theinput rating of the test equipment. Insert a 30 dB 100 W attenuator if necessary.) 4. Place the RF switch on the LPA in the ON position. 5. If using a spectrum analyzer, proceed to step 6. If using a power meter, measure thecomposite signal power from the STM and then proceed to step 8.6. Measure the RF level of a single carrier, such as the control channel, in dBm. Make surethe resolution bandwidth of the spectrum analyzer is 30 kHz. 7. Calculate the total composite signal power using the following formula: Ptot = Pc + 10Log NWhere,Ptot is the total composite power in dBmPc is the power per carrier in dBm as measured in step 6, andN is the total number of channels. 8. Record the result measured in step 5 or calculated in step 7. 9. Place the RF switch on the LPA in the OFF position. 10. Disconnect the spectrum analyzer or RF power meter from the STM ANTENNA port. 11. Re-connect the antenna cable to the STM ANTENNA port. 2.7 Enter Remote Forward AttenuationThe STM internal forward path attenuator setting is used to reduce the power level of thecomposite output signals at the STM antenna port. The maximum composite output signal levelat the STM antenna port is set using the Host internal forward attenuator (see Section 2.5).However, component variations may result in the output power at the STM antenna port beingslightly above or below the required power per channel. If this is the case, the STM forwardattenuator may be used in conjunction with the Host forward attenuator to add or removeattenuation to produce the required output signal level. If less power is required, the STMforward attenuator may be used to reduce the power level. The default setting is 31 dB. Use thefollowing procedure to change the STM forward attenuation: Note: To comply with Maximum Permissible Exposure (MPE) requirements, themaximum composite output from the antenna cannot exceed 1000 Watts EIRP and theantenna must be permanently installed in a fixed location that provides at least 6 meters(20 feet) of separation from all persons.
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 3: OperationPage 3-14© 2004, ADC Telecommunications, Inc.1. Click on the REMOTE RF tab. The REMOTE RF display will open within the EMS mainwindow as shown in Figure 3-10. Figure 3-10. REMOTE LPA Display2. Check the level of the RF output signal (as determined in Section 2.6) against the systemdesign plan specifications. Table 3-2 shows the output signal level required to provide 5watts per channel for systems with 1 to 4 channels. The maximum output signal levelpermitted for the system is 43.4 dBm (22 Watts). 3. Determine if more or less attenuation is required to produce the required output signal level. 4. Click on the Remote Fwd Att field Edit button (see Figure 3-10). The Remote Fwd Attpop-up screen will open as shown in Figure 3-11. Table 3-2. Composite Output Signal LevelsNUMBER OF CHANNELSOUTPUT SIGNAL LEVEL REQUIRED TO PROVIDE 5 WATTS PER CHANNEL 137 dBm240 dBm342 dBm443 dBmClick Edit button toopen the Remote FwdAtt pop-up screenRF output signallevel (± 3 dB)
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 3: OperationPage 3-15© 2004, ADC Telecommunications, Inc.Figure 3-11. Remote Fwd Att Pop-Up Screen5. Enter the required attenuation value and click OK to close the pop-up screen and to makethe changes take effect. 6. Verify that the appropriate RF output signal level appears in the RF Output Power field(see Figure 3-10). This is primarily a reference value and should not take the place ofexternal test equipment when determining the power level of the composite RF outputsignal. Depending on the modulation type and number of channels, the EMS software mayreport a power level that is higher or lower (± 3 dB) than the actual RF output signal. 2.8 Enter Host Reverse AttenuationThe level of the RF signal that should be input to the EBTS will vary depending on the type ofEBTS, the receive distribution, and the number of channels present. To interface with the EBTS,the reverse path signal level must be adjusted to provide the signal level required by the EBTS.The HU provides from –1 to +30 dB of gain in the reverse path. By default, the host reverseattenuator is set to –31 dB of attenuation which provides –1 dB of gain. Use the followingprocedure to set the reverse path gain:1. Check the EBTS manufacturer’s specifications to determine the composite signal levelrequired at the 806–824 MHz and 896–901 MHz reverse path input ports. 2. Determine the overall gain and loss imposed on the signal by the antenna, antenna cable,and by the cables that connect the HU to the EBTS. 3. Determine the amount of gain required to raise the reverse path signal to the level requiredat the EBTS. 4. Click on the HOST RF tab. The HOST RF display will open within the EMS mainwindow as shown in Figure 3-12. Note: To comply with Maximum Permissible Exposure (MPE) requirements, themaximum composite output from the antenna cannot exceed 1000 Watts EIRP and theantenna must be permanently installed in a fixed location that provides at least 6 meters(20 feet) of separation from all persons.
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 3: OperationPage 3-16© 2004, ADC Telecommunications, Inc.Figure 3-12. HOST RF Display5. Click on the Host Rev Att field Edit button (see Figure 3-12). The Host Rev Att pop-upscreen will open as shown in Figure 3-13. Figure 3-13. Host Rev Att Pop-Up Screen6. Enter the attenuation value that will provide the required gain. Refer to Table 3-3 for theattenuation values and the corresponding gain (nominal) values. 7. Click OK to close the pop-up screen and to make the changes take effect.Click Edit button toopen the Host Rev Attpop-up screen
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 3: OperationPage 3-17© 2004, ADC Telecommunications, Inc.2.9 Enter Host Forward and Reverse DelayThe forward and reverse delay function allows entry of from 0 to 63 µsec of delay in theforward and reverse paths. This feature is used when multiple systems are used to transport thesame channel and there is a significant difference in the path delay between systems. Additionaldelay may be entered to balance the overall system delay. The amount of delay required must becalculated by the RF engineer and should be included in the system design plan. The defaultsetting is 0 µsec. Use the following procedure to change the forward and reverse path delay: 1. Click on the HOST RF tab. The HOST RF display will open within the EMS mainwindow as shown in Figure 3-14. 2. Click on the Host Fwd Delay field Edit button (see Figure 3-14). The Host Fwd Delaypop-up screen will open as shown in Figure 3-15. 3. Obtain the value of the forward delay as specified in the system design plan. The delay isadjustable in 0.1 µsec steps. 4. Enter the forward path delay value and click OK to close the pop-up screen and to makethe changes take effect. 5. Repeat the process for reverse delay by right-clicking on the appropriate delay section (seeFigure 3-14) and then entering the required delay value in the pop-up screen. 6. Click OK to close each pop-up screen and to make the changes take effect. Table 3-3. Reverse Path Attenuation Setting and Nominal Gain ProvidedATTENUATION SETTINGGAIN PROVIDEDATTENUATION SETTINGGAIN PROVIDEDATTENUATION SETTINGGAIN PROVIDED 0 dB →30 dB 11 dB →19 dB 22 dB →8 dB1 dB 29 dB 12 dB 18 dB 23 dB 7 dB2 dB 28 dB 13 dB 17 dB 24 dB 6 dB3 dB 27 dB 14 dB 16 dB 25 dB 5 dB4 dB 26 dB 15 dB 15 dB 26 dB 4 dB5 dB 25 dB 16 dB 14 dB 27 dB 3 dB6 dB 24 dB 17 dB 13 dB 28 dB 2 dB7 dB 23 dB 18 dB 12 dB 29 dB 1 dB8 dB 22 dB 19 dB 11 dB 30 dB 0 dB9 dB 21 dB 20 dB 10 dB 31 dB –1 dB10 dB 20 dB 21 9 dB
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 3: OperationPage 3-18© 2004, ADC Telecommunications, Inc.Figure 3-14. HOST RF DisplayFigure 3-15. Host Fwd Delay Pop-Up ScreenClick Edit button toopen the Host FwdDelay pop-up screenClick Edit button toopen the Host RevDelay pop-up screen
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-1© 2004, ADC Telecommunications, Inc.SECTION 4: MAINTENANCE1 SYSTEM MAINTENANCE OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11.1 Tools and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12 FAULT DETECTION AND ALARM REPORTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-23 FAULT ISOLATION AND TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-63.1 Host Unit Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-73.2 STM Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-93.3 LPA Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-134 TEST PROCEDURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-154.1 Optical Power Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-154.2 Optical Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-175 SCHEDULED MAINTENANCE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19_________________________________________________________________________________________________________1 SYSTEM MAINTENANCE OVERVIEWThis section explains the Digivance system fault detection and alarm reporting system, providesa method for isolating and troubleshooting faults, and provides test procedures. The Digivancesystem requires minimal regular maintenance to insure continuous and satisfactory operation.Components that require regular replacement, cleaning, or testing include the HU fans, STMfan, LPA fans, RU cabinet air-filter, and RU back-up battery.Maintenance also includes diagnosing and correcting service problems as they occur. When analarm is reported, it will be necessary to follow a systematic troubleshooting procedure to locatethe problem. Once the source of the problem is isolated, the appropriate corrective action can betaken to restore service. The only internal components that can be replaced are the cooling fanswhich mount in the HU, RU, and LPA. The failure of any other internal component will requirereplacement of the entire unit. 1.1 Tools and MaterialsThe following tools and materials are required in order to complete the maintenance proceduresspecified in this section: •ESD wrist strap• IR filtering safety glasses• Patch cords with SC connectors• 15 dB in-line SC optical attenuators• Optical power meter (1550 and 1310 nm)• TORX screwdriver (with T10 bit)• Battery maintenance tools (see PRC-SERIES OPERATING AND FIELD SERVICEMANUAL for tool recommendations)
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-2© 2004, ADC Telecommunications, Inc.2 FAULT DETECTION AND ALARM REPORTINGThe Digivance LRCS on-board embedded software detects various unit and system faults whichgenerate ether a Major or Minor alarm. A Major alarm indicates that the system has failed in away that directly affects RF transport performance. When a major alarm occurs, all RFfunctions are disabled and the system is out of service. A Minor alarm means that systemperformance is not affected or in some cases, that the performance may no longer be optimal.When a minor alarm occurs, RF functions continue and the system remains in service. The following means are used to report Major and Minor alarms: • HU alarm contacts• HU, STM, and LPA front panel LED’s• EMS software Graphical User Interface (GUI)• Network Operations Center - Network Element Manager (NOC/NEM) interface• SNMP interfaceThe HU is equipped with a set of both normally open (NO) and normally closed (NC) alarmcontacts which may be used to report both Major and Minor alarms to an external alarm system.The alarm contacts summarize the inputs so that any Major or Minor alarm will trigger an alarmreport to the external alarm system. The HU, STM, and LPA front panel LED indicators show status and alarm information bydisplaying various colors: Green, Red, Yellow, and Off. In addition to LED indicators, the 35Watt LPA is also equipped with a Digital Display that provides text messages. A description ofthe Host Unit, Spectrum Transport Module, and 35 Watt LPA LED indicators is providedrespectively in Table 4-1, Table 4-2, and Table 4-3. The EMS software GUI provides both a summary and a detailed list of alarm information thatincludes unit and module level faults, circuit faults, and measured value faults such as voltages,RF power, and temperature. A summary showing a list of all systems and their current alarmstatus is presented through the Alarm OverView display. A more detailed list of alarminformation is presented through the HOST alarm display and the REMOTE alarm display. Thevarious fault conditions that trigger a major or minor alarm report are shown in the HOST andREMOTE alarm displays. The NOC/NEM interface provides the same summary and detailed listing of alarm informationas the EMS software GUI but in an ASCII text string format. Sending the command GETALARMSUMMARY produces a list of all systems and their current alarm status. Sending thecommand GET ALARM ALL for a specific system will produce a detailed list of alarminformation for the specified system. The SNMP interface provides alarm information to up to ten SNMP managers which must beregistered with the SNMP agent. The SNMP interface allows the SNMP managers to receive thealarm and status information generated by the host and remote units. The presentation of thealarm information is dependent on the features of the SNMP manager.
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-3© 2004, ADC Telecommunications, Inc.Table 4-1. Host Unit LED IndicatorsINDICATOR COLOR DESCRIPTIONPOWERGreenOffIndicates if the HU is powered or un-powered.The DC power source is on.The DC power source is off.STANDBYGreen (blinking)Yellow (blinking)Red (blinking)OffIndicates if the system is in the standby, normal, test, or program load mode.The HU is in the standby mode.The HU is in the program load mode. The HU is in the test mode.The HU is in the normal mode. HOST UNITGreenYellowRedIndicates if the HU is normal, over temperature, if an internal fault is detected, or if there is an equipment mis-match. The HU is normal. The HU is over temperature or detects an internal fault. The HU detects an internal fault or HU/RU band mismatch.REMOTE UNITGreenYellowRedIndicates if an alarm is detected at the RU. No alarms detected at the RU.A minor alarm is detected at the RU.A major alarm is detected at the RU. DRIVE 851–869andDRIVE 935–940GreenYellowRedIndicates if the specified forward path RF signal level is normal, above overdrive threshold, or below underdrive threshold. The RF signal level is normalThe RF signal level is below the underdrive threshold.The RF signal level is above the overdrive threshold. FWD/REV(PORT 1/PORT 2)GreenRedIndicates if the reverse path optical signals from the STM are normal, if errors are detected, or if the optical signal is not detected.The reverse path optical signals are normal. Excessive errors (see Note) are detected in the reverse path optical signals or the HU is not receiving a reverse path optical signal. Note: Excessive errors means the Bit Error Rate (BER) has exceeded 10–6 (1 bit error per million bits).
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-4© 2004, ADC Telecommunications, Inc.Table 4-2. Spectrum Transport Module LED IndicatorsINDICATOR COLOR DESCRIPTIONAC POWERGreenRedIndicates if the STM is powered by the AC power source or the back-up battery system. The STM is powered by the AC power source. The STM is powered by the back-up battery system.STANDBYGreen (blinking)Yellow (blinking)Red (blinking)OffIndicates if the system is in the standby, normal, test, or program load mode.The STM is in the standby mode.The STM is in the program load mode. The STM is in the test mode.The STM is in the normal mode. HOST UNITGreenYellowRedIndicates if an alarm is detected at the HU. No alarms detected at the HU.A minor alarm is detected at the HU.A major alarm is detected at the HU. STMGreenYellowRedIndicates if the STM is normal, over temperature, if a bat-tery fault is detected, if an internal fault is detected, or if there is an equipment mismatch. The STM is normal. The STM is over temperature due to high ambient tempera-ture, the fan has failed, or detects an internal fault.The STM detects an internal fault, the backup battery voltage is below threshold, or HU/RU band mismatch. PAGreenYellowRedIndicates if the LPA is normal, over temperature, has a fan failure, has an internal fault, is shutdown, or not present. The LPA is normal. The LPA is over temperature or the fan has failed. Internal fault detected in the LPA, the LPA RF power output is shutdown, or the LPA is not present. VSWRGreenRedIndicates if the forward path VSWR is above or below the threshold. The VSWR is below the threshold. The VSWR is above the threshold. FWD/REV(PORT 1/PORT 2)GreenRedIndicates if the forward path optical signals from the HU are normal, if errors are detected, or if the optical signal is not detected.The forward path optical signals are normal. Excessive errors (see Note) are detected in the forward path optical signal or the STM is not receiving the forward path optical signal. Note: Excessive errors means the Bit Error Rate (BER) has exceeded 10–6 (1 bit error per million bits).
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-5© 2004, ADC Telecommunications, Inc.Table 4-3. 35 Watt LPA LED Indicators and Digital Display INDICATOR COLOR DESCRIPTIONFAILOffYellowIndicates if the LPA is normal or faulty.The LPA is normal.Internal fault detected in the LPA.SHUTDOWNOffRedIndicates if the LPA has an RF output or if the RF output is shutdown. The LPA RF output is on.The LPA RF output is shutdown. DISPLAY MESSAGE 1ST LINE DESCRIPTIONPA Initializing The LPA is initializing itself and is not ready for operation.Normal Operation The LPA is enabled and transmitting RF.Internal Shutdown The LPA is disabled due to a major fault and is not transmit-ting RF. Forced Shutdown The LPA is disabled by the front panel control switch or through the EMS. DISPLAY MESSAGE 2ND LINE DESCRIPTIONOver Power The LPA maximum RF output rating has been exceeded. Over Temperature The LPA maximum operating temperature has been exceeded.VSWR The voltage standing wave ratio is greater than 3:1. DC Fail The LPA internal DC power supply is out of specification. Low Gain The LPA internal amplifier gain is too low. Alarm: OK The LPA does not detect any faults that would cause an alarm.Loop Fail The LPA internal loop gain in out of range. Fan Fail One or both of the LPA cooling fans has failed.
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-6© 2004, ADC Telecommunications, Inc.3 FAULT ISOLATION AND TROUBLESHOOTINGAlarm information may be accessed using the HU and STM front panel LED indicators, theEMS software GUI, the NOC-NEM interface, or the SNMP manager. When an alarm occurs,use the unit LED indicators and any one of the specified software tools to determine whichDigivance system is affected, which unit (HU or STM) reported the alarm, and the fault thatgenerated the alarm. Then refer to either Section 3.1 Host Unit Troubleshooting or Section 3.2STM Troubleshooting to isolate the problem and to determine the corrective action required. Ifan LPA problem is reported by the STM, refer to Section 3.3 LPA Troubleshooting for thetroubleshooting procedures that apply to the LPA. When attempting to isolate a problem, always determine the initial fault that generated thealarm report. Some faults may cause additional faults to be reported which tends to obscure theinitial reason for the alarm. To help isolate faults, the EMS GUI provides an AlarmOverviewscreen, shown in Figure 4-1, that indicates which Digivance system/unit is reporting the alarm.Figure 4-1. AlarmOverView Screen The AlarmOverview screen includes an ALARM HIST indicator which the user should click toacknowledge that an alarm exists. Acknowledging the alarm opens the Alarm History Infodialog box (also shown in Figure 4-1) which directs the user to view the EMS Log file fordetails. The EMS Log file lists the various faults in the order in which they occurred. Clear eachfault starting with the initial fault. In most instances, clearing the initial fault will also clear anyremaining faults. For additional information on using the AlarmOverview screen, refer to theDigivance Element Management System Version 3.01 User Manual (ADCP-75-151).Note: It is recommended that if there are alarms at both the HU and STM, the opticalfaults should be checked and cleared first. Because the HU and STM function as a system,a fault in the fiber optic link will cause alarms to be reported by both the HU and STM. Click to acknowledgealarm and to open AlarmHistory Info dialog boxClick to clear alarmhistory fault indicatorand to close AlarmHistory Info dialog box
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-7© 2004, ADC Telecommunications, Inc.3.1 Host Unit TroubleshootingUse this section to troubleshoot alarms that originate with the Host Unit. When a Minor alarmoccurs, one (or more) of the Host Unit LED’s with turn yellow and the EMS software willindicate a minor fault/alarm. When a Major alarm occurs, one (or more) of the Host Unit LED’swill turn red and the EMS software will indicate a major fault/alarm. Locate the LED and thecorresponding software fault/status indicator in Table 4-4 and then take the corrective actionindicated. Table 4-4. Host Unit Fault/Alarm Isolation DiagramPowerHost Unit Front Panel LEDStandbyHostUnitGreen - NormalYellow - Minor AlarmRed - Major AlarmGreen - PoweredOff - Not poweredGreen blinking - StandbyYellow blinking - Program loadRed blinking - TestOff - NormalTemperature - Over temperatureLO Synth Lock - Localoscillator synthesizer out of lockPri Rev Synth Lock - Reverseprimary synthesizer out of lock8 Volt - Onboard 8 Volt powersupply below threshold3.8 Volt - Onboard 3.8 Volt powersupply below thresholdPri Fwd Mux Lock - Forward primaryphase locked loop out-of-lockPri Laser Fail - Forward primarylaser failureHardware mismatch - Host and Remote band mismatchSoftware Fault/Status IndicatorReplace HUTable 4-5Problem BReplace HU orSTM withcorrect unitCorrective Actionor ReferenceOper Mode - Operationalmode of systemNo specific HU faults - Only faults with no associated LEDare displayedTable 4-5Problem AUse EMS to change system torequired modeContinued20013-A
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-8© 2004, ADC Telecommunications, Inc.Table 4-5. Host Unit Fault/Alarm Corrective ActionPROBLEM A: The HU is not powered.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The HU is turned off. 2. The fuse is open/removed from the fuse panel or the DC power has failed.1. Place On/Off switch in the On position. 2. Check DC power source, repair as needed, and replace or reinstall fuse at fuse panel. PROBLEM B: The HU is overheating.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Air intake or exhaust opening to HU chassis is blocked2. Ambient temperature > 50º C/122º F. 3. Faulty fan. 4. The HU has failed. 1. Remove cause of air-flow blockage. 2. Reduce ambient temperature.3. Replace HU fan (See applicable manual).4. Replace HU. Host Unit Front Panel LED Software Fault/Status Indicator Corrective Actionor ReferenceTable 4-4. Host Unit Fault/Alarm Isolation Diagram, continuedFwd/Rev(Port 1/Port 2)See Table 4-5Problem ESee Table 4-5Problem EGreen - NormalRed - Major AlarmPri Rx Light - No light receivedover optical reverse pathPri Rx Errors - Excessive errorsreceived over optical reverse pathSee specificfault indicatorSee specificfault indiatorMinor Contact Output - Minor alarmreported by HU or STMMajor Contact Output - Major alarmreported by HU or STMRemote Lost - The HU cannotcommunicate with remote (STM)EMS Link Status - The EMS cannotcommunicate with HUNo Associated LEDSee Table 4-5Problem ESee Table 4-5Problem F20014-ARemoteUnitGreen - NormalYellow - Minor Alarm at Remote Unit - See Table 4-6. Remote Unit Fault/Alarm Isolation DiagramRed - Major Alarm at Remote Unit - See Table 4-6. Remote Unit Fault/Alarm Isolation DiagramDrive851-869Green - NormalYellow - Minor AlarmRed - Major AlarmRF Underdrive - 800 MHz forwardpath RF signal level too lowRF Overdrive - 800 MHz forwardpath RF signal level too highTable 4-5Problem CTable 4-5Problem DDrive935-940Green - NormalYellow - Minor AlarmRed - Major AlarmRF Underdrive 900 MHz - 900 MHzforward path RF signal level too lowRF Overdrive 900 MHz - 900 MHzforward path RF signal level too highTable 4-5Problem CTable 4-5Problem D
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-9© 2004, ADC Telecommunications, Inc.3.2 STM TroubleshootingUse this section to troubleshoot alarms that originate with the STM. When a Minor alarmoccurs, one (or more) of the STM LED’s will turn yellow and the EMS software will indicate aminor fault/alarm. When a Major alarm occurs, one (or more) of the STM LED’s will turn redand the EMS software will indicate a major fault/alarm. Locate the LED and the correspondingfault/status indicator in Table 4-6 and then take the corrective action indicated. PROBLEM C: The RF input signal level is below the underdrive threshold. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Composite output signal from EBTS is too low.2. Faulty coaxial connection between the HU and the EBTS.3. Incorrect attenuation in forward path RF coaxial link. 1. Check EBTS composite output signal level and adjust if too low. 2. Correct EBTS cables if faulty. 3. Check Host Forward Attenuator setting and adjust if attenuation is too high.PROBLEM D: The RF input signal is above the overdrive threshold.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Composite output signal level from EBTS is too high. 2. Incorrect attenuation in forward path RF coaxial link. 1. Check EBTS composite output signal level and adjust if too high. 2. Check Forward Attenuator setting and adjust if attenuation is too low. PROBLEM E: No light received over the reverse path or excessive errors received over the reverse pathPOSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Faulty reverse path optical fiber. 2. Faulty optical transmit port at the STM; or faulty optical receive port at the HU1. Test optical fiber. Clean connector if dirty. Repair or replace optical fiber if faulty. (See Section 4.1).2. Test optical ports. Replace HU or STM if port is faulty (See Section 4.2). PROBLEM F: The HU does not respond to control or monitoring commands sent by the EMS. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The HU is not powered. 2. The cable connection between the HU and the EMS computer is faulty.3. The CAN cable connections between the HUs in a multiple HU installation are faulty.1. See Problem A this table. 2. Inspect EMS cable and repair or replace if faulty.3. Inspect each CAN cable and repair or replace if faulty.Table 4-5. Host Unit Fault/Alarm Corrective Action, continued
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-10© 2004, ADC Telecommunications, Inc.Table 4-6. Remote Unit Fault/Alarm Isolation DiagramACPowerRemote Unit Front Panel LEDGreen - Powered by AC powersourceRed - Major AlarmOff - Not poweredSoftware Fault/Status IndicatorHostUnitGreen - NormalYellow - Minor Alarm at Host Unit - See Table 4-4. Host Unit Fault/Alarm Isolation DiagramRed - Major Alarm at Host Unit - See Table 4-4. Host Unit Faul/Alarm Isolation DiagramSTMGreen - NormalYellow - Minor AlarmRed - Major AlarmTemperature - Over temperatureReplace STMSee Table 4-7Problem BReplace HU orSTM withcorrect unitCorrective Actionor ReferenceConverter - Power supplyconverter failureLO Synth Lock - Localoscillator synthesizer out of lockPri Rev Synth Lock - Reverseprimary synthesizer out of lockRef Synth Lock - Referencesynthesizer out of lock8 Volt - Onboard 8 Volt powersupply below threshold3.8 Volt - Onboard 3.8 Volt powersupply below thresholdPri Rev Mux Lock - Reverse primaryphase locked loop out-of-lockPri Laser Fail - Reverse primarylaser failureHardware mismatch - Host andRemote band mismatchBattery Voltage - Batteryvoltage below thresholdAC Fail - The AC power is off,RU powered by back-up batterySee Table 4-7Problem ASee batterymanualStandbyGreen blinking - StandbyYellow blinking - Program loadRed blinking - TestOff - NormalOper Mode - Operational modeof systemUse EMS tochange system torequired modeContinued20015-A
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-11© 2004, ADC Telecommunications, Inc.Remote Unit Front Panel LED Software Fault/Status Indicator Corrective Actionor ReferenceFwd/Rev(Port 1/Port 2)See Table 4-7Problem ESee Table 4-7Problem EGreen - NormalRed - Major AlarmPri Rx Light - No light receivedover optical forward pathPri Errors - Excessive errorsreceived over optical forward pathPAGreen - NormalYellow - Minor AlarmRed - Major AlarmInstall LPACheck LPA. SeeTable 4-8Check LPA. SeeTable 4-8Check LPA. SeeTable 4-8Check LPA. SeeTable 4-8Check LPA. SeeTable 4-8LPA Detect - LPAnot installedLPA Over Power - LPAsignal level too highLPA VSWR - The LPAVSWR is too highLPA DC Fail - LPA DCpower supply failureLPA Loop Failed - LPAinternal loop failureLPA Low Power - LPAinternal amplifier failureLPA Fan - Fan failureLPA Temp - Over temperatureReplaceLPA fanSee Table 4-7Problem CVSWRGreen - NormalRed - Major Alarm System VSWR - The VSWR atthe quadraplexer is too highSee Table 4-7Problem DHost Lost - The STM cannotcommunicate with Host (HU)EMS Link Status - The EMS cannotcommunicate with STMMinor Extern Input - Minor externalalarm reported by STMMajor Extern Input - Major externalalarm reported by STMRF Power - No RF power detectedat quadraplexer (STM)LPA Disable - The LPA is shut downNo Associated LEDSee Table 4-7Problem GSee Table 4-7Problem GSee Table 4-7Problem HSee Table 4-7Problem FSee Table 4-7Problem ECheck LPA. SeeTable 4-8Table 4-6. Remote Unit Fault/Alarm Isolation Diagram, continued20016-A
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-12© 2004, ADC Telecommunications, Inc.Table 4-7. STM Fault/Alarm Corrective ActionPROBLEM A: The RU is powered by the battery back-up system.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The AC power system circuit breaker is open or the AC power has failed. 2. The STM has failed. 1. Check the AC power system, repair as needed, and reset circuit breaker. 2. Replace the STM. PROBLEM B: The STM is overheating.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Air intake or exhaust opening to the remote unit cabinet is blocked2. Ambient temperature > 50º C/122º F. 3. Faulty fan. 4. The STM has failed. 1. Remove cause of air-flow blockage. 2. Reduce ambient temperature.3. Replace STM fan (See applicable manual).4. Replace STM.PROBLEM C: The LPA is overheating. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS 1. Air intake or exhaust opening to the remote unit cabinet is blocked2. Ambient temperature > 50º C/122º F. 3. Faulty fan. 1. Remove cause of air-flow blockage. 2. Reduce ambient temperature.3. Replace LPA fan (See applicable manual).PROBLEM D: The forward path VSWR is above threshold. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Faulty antenna or antenna system.2. Faulty antenna cable. 3. The STM qudraplexer has failed. 1. Check the antenna system for shorts or opens (including lightning protector). 2. Check the antenna cable for faulty connections.3. Replace the STM. PROBLEM E: No light received over the forward path or excessive errors received over the forward pathPOSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Faulty forward path optical fiber. 2. Faulty optical transmit port at the HU; or faulty optical receive port at the STM.1. Test optical fiber. Clean connector if dirty. Repair or replace optical fiber if faulty. (See Section 4.1).2. Test optical ports. Replace HU or STM if port is faulty (see Section 4.2). PROBLEM F: The STM does not respond to control or monitoring commands sent by the EMS. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The cable connection between the STM and the EMS computer is faulty. 1. Inspect EMS cable and repair or replace if faulty.PROBLEM G: An external fault is detected at the Remote Unit. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The RU cabinet door is open. 2. Customer specified external fault at RU1. Close RU cabinet door. 2. Check RU and correct specified external fault.
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-13© 2004, ADC Telecommunications, Inc.3.3 LPA TroubleshootingDuring normal operation of the 35 Watt LPA, all LED’s should be Off. When troubleshootingthe LPA, always check the LPA front panel display for messages before initiating a reset orreplacing the LPA. The display will generally indicate the reason for the alarm. Table 4-8. 35 Watt LPA Fault Isolation and Corrective ActionLED: FAIL Color: Yellow Alarm Type: MajorPROBLEM: Internal fault detected in the LPA. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The STM to LPA connecting cable is faulty. 2. The LPA has failed. 1. Inspect cable and repair or replace if faulty. 2. Replace LPALED: SHUTDOWN Color: Red Alarm Type: MajorPROBLEM: The RF output from the LPA is shutdown.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1.The RF ON/OFF switch is in the OFF position2. The LPA is in the forced shutdown mode (single front fan unit) or internal shutdown mode (dual front fan unit).3. Breaker switch on LPA is open4. The LPA is faulty. 1. Place RF ON/OFF switch in the ON position2. Watch the LED Display and note reason for the forced shutdown. Refer to the Display Message section of this table for the recommended correc- tive action.3. Reset breaker switch. 4. Replace LPA. DISPLAY MESSAGE FORCED/INTERNAL SHUTDOWN Alarm Type: LOOP FAILPROBLEM: Internal fault detected in the LPA. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The LPA has failed. 1. Replace LPADISPLAY MESSAGE FORCED/INTERNAL SHUTDOWN Alarm Type: DC FAILPROBLEM: Internal fault detected in the LPA. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The LPA has failed. 1. Replace LPADISPLAY MESSAGE FORCED/INTERNAL SHUTDOWN Alarm Type: LOW POWER ALARMPROBLEM: Internal fault detected in the LPA. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The LPA has failed. 1. Replace LPADISPLAY MESSAGE FORCED/INTERNAL SHUTDOWN Alarm Type: FANFAILPROBLEM: Internal fault detected in the LPA. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Both LPA fans have failed. 1. Replace both LPA fans. To reset, use EMS to place Digivance system in standby mode and then place system back in normal mode.
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-14© 2004, ADC Telecommunications, Inc.DISPLAY MESSAGE FORCED/INTERNAL SHUTDOWN Alarm Type: OVER POWER ALARMPROBLEM: Output power from the LPA exceeds the maximum rating. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The power level of the RF forward path composite input signal at the HU is too high. 2. The LPA has failed. 1. Check the power level of the RF composite input signal at the HU and adjust to correct level. To reset, use EMS to place Digivance system in standby mode and then place system back in normal mode. 2. Replace LPA.DISPLAY MESSAGE FORCED/INTERNAL SHUTDOWN Alarm Type: VSWR ALARMPROBLEM: The VSWR exceeds threshold setting of 3:1.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The interface cable between the LPA and STM is faulty or the interface cable connectors are faulty. 2. The antenna cable or antenna cable connectors are faulty. 3. The antenna or antenna system is faulty. 4.The STM qudraplexer has failed. 5. The LPA has failed. 1. Inspect interface cable and connectors and repair or replace as needed.To reset, use EMS to place Digivance system in standby mode and then place system back in normal mode.2. Inspect antenna cable and connectors and repair or replace as needed.To reset, use EMS to place Digivance system in standby mode and then place system back in normal mode.3. Check the antenna circuit for shorts or opens (including lightning protector). To reset, use EMS to place Digivance system in standby mode and then place system back in normal mode.4. Replace STM.5. Replace LPATable 4-8. 35 Watt LPA Fault Isolation and Corrective Action, continued
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-15© 2004, ADC Telecommunications, Inc.4 TEST PROCEDURESThis section provides procedures for common troubleshooting and maintenance tests. Refer tothese procedures as needed when specified in the Fault/Alarm Isolation Diagrams in Section 3. 4.1 Optical Power TestA break in an optical fiber or a fault with the optical connector will interrupt communicationsbetween linked components or generate excessive errors. Use the following procedure to isolatea problem with an optical fiber or connector. 1. Put on the IR filtering safety glasses. 2. Notify the NOC or alarm monitoring system operator that the system is going offline. 3. At the HU and at the STM, place the On/Off switches in the OFF position (press O). 4. Disconnect the optical fiber connectors for the fiber to be tested at the HU and the STM. 5. Inspect the optical connectors. Verify that connectors are clean and that no scratches orimperfections are visible on the fiber end. Clean and polish the optical connectors if necessary. 6. Connect the optical power meter to the output (receiver) end of the optical fiber as shownin Figure 4-2. If an attenuator was included in the fiber link, make sure the attenuator isinstalled. Figure 4-2. Forward and Reverse Path Optical Fiber Test Set UpDanger: This equipment uses a Class 1 Laser according to FDA/CDRH rules. Laser radiationcan seriously damage the retina of the eye. Do not look into the ends of any optical fiber. Do notlook directly into the optical transmitter of any unit or exposure to laser radiation may result.An optical power meter should be used to verify active fibers. A protective cap or hood MUSTbe immediately placed over any radiating transmitter or optical fiber connector to avoid thepotential of dangerous amounts of radiation exposure. This practice also prevents dirt particlesfrom entering the connector.Note: Turning off the HU and STM disables the respective lasers which is necessary inorder to safely inspect and clean the optical connectors. HOST UNITFWD(PORT 1)REV(PORT 2)FWD(PORT 1)REV(PORT 2)STMOPTICAL POWERMETEROPTICAL POWERMETERATTENUATOR(IF USED)ATTENUATOR(IF USED)FORWARD PATHOPTICAL FIBERREVERSE PATHPATH OPTICAL FIBER-13 TO -25 dBm-15 TO -25 dBmFORWARD PATH OPTICAL FIBER TEST SET UP REVERSE PATHOPTICAL FIBER TEST SET UP20017-A
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-16© 2004, ADC Telecommunications, Inc.7. Connect the input (transmitter) end of the optical fiber to the transmitting HU or STM(see Figure 4-2). 8. At the transmitting HU or STM, place the On/Off switch in the ON position (press I).9. Using the transmitting HU or STM as an optical light source, measure the optical powerat the receiver end of the optical fiber. The power level of the optical input signal at theHU or STM must fall within the following ranges: Forward Path Signal at the STM: –15 to –25 dBm (with attenuator installed)Reverse Path Signal at the HU: –13 to –25 dBm (with attenuator installed) If the power level of the received optical signal is within the specified range, the opticalfiber and the far end unit are good. If the power level of the received signal is not withthe specified range, either the optical fiber is faulty or the far end unit optical transmitteris faulty. Continue with test procedure to isolate the problem 10. At the transmitting HU or STM, place the On/Off switch in the OFF position (press O). 11. Disconnect the optical power meter from the receiver end of the optical fiber.12. Use a 1 meter patch cord to connect the optical power meter to the transmitting HU orSTM as shown in Figure 4-3.Figure 4-3. Host Unit and STM Optical Transmitter Test Set Up13. At the transmitting HU or STM, place the On/Off switch in the ON position (press I).14. Measure the optical output power of the transmitting HU or STM. The power level of theoptical output signal from the HU or STM must meet the following specification: Forward Path Signal at the HU: 0 + 1 dBmReverse Path Signal at the STM: +2 + 1 dBmIf the power level of the optical output signal is within specifications with a 1 meterpatch cord installed, the fiber optic link is faulty. If the power level of the optical signalis not within specifications, the far end HU or STM optical transmitter is faulty.HOST UNITSTMOPTICAL POWERMETEROPTICAL POWERMETER+2 +/- 1 dBm0 +/- 1 dBmHOST UNIT OPTICAL TRANSMITTERTEST SET UPSTM OPTICAL TRANSMITTERTEST SET UP1 METER PATCH CORD1 METER PATCH CORD20018-AFWD(PORT 1)REV(PORT 2)FWD(PORT 1)REV(PORT 2)
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-17© 2004, ADC Telecommunications, Inc.15. At the transmitting HU or STM, place the On/Off switch in the OFF position (press O). 16. Disconnect the optical power meter from the receiver end of the optical fiber.17. Reconnect the optical fibers to the receiving HU or STM. 18. Repeat steps 3 through 17 for each optical fiber that requires testing. 19. When ready to put the system back into service, place the On/Off switch in the ONposition (press I) at both the HU and STM. 20. Notify the NOC or alarm monitoring service that the system is going back online. 4.2 Optical Loopback TestThe following procedures provide tests to determine if an optical port fault exists with the HostUnit or with the STM. 1. Put on the IR filtering safety glasses. 2. Notify the NOC or alarm monitoring system operator that the system is going offline. 3. At the HU or STM (whichever unit is being tested), place the On/Off switch in the OFFposition (press O). 4. Disconnect the optical fiber connectors from the FWD (PORT 1) and REV (PORT 2)optical ports and place a dust cap over each connector. 5. Plug a 15 dB in-line optical attenuator into the FWD (PORT 1) optical port as shown inFigure 4-4. Figure 4-4. Host Unit and STM Loopback TestDanger: This equipment uses a Class 1 Laser according to FDA/CDRH rules. Laser radiationcan seriously damage the retina of the eye. Do not look into the ends of any optical fiber. Do notlook directly into the optical transmitter of any unit or exposure to laser radiation may result.An optical power meter should be used to verify active fibers. A protective cap or hood MUSTbe immediately placed over any radiating transmitter or optical fiber connector to avoid thepotential of dangerous amounts of radiation exposure. This practice also prevents dirt particlesfrom entering the connector. HOST UNIT OR STM1 METER PATCH CORD15 dBATTENUATOR20019-AFWD(PORT 1)REV(PORT 2)
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-18© 2004, ADC Telecommunications, Inc.6. Connect a 1 meter patch cord between the optical attenuator and the REV (PORT 2)optical port. 7. Place the On/Off switch in the ON position (press I) and observe the FWD/REV (PORT 1/PORT 2) LED indicator. 8. The FWD/REV (PORT 1/PORT 2) LED indicator will turn either red or green. If the LEDturns red, either the FWD (PORT 1) optical transmitter or the REV (PORT 2) receiver isfaulty. If the LED turns green, both the FWD (PORT 1) and the REV (PORT 2) opticalports are good. 9. Place the On/Off switch in the OFF position (press O). 10. Remove the dust caps from the optical fiber connectors. 11. Clean each connector (follow connector supplier’s recommendations) and then insert eachconnector into the appropriate optical port. 12. When ready to put the unit back into service, place the On/Off switch in the ON position(press I).13. Notify the NOC or alarm monitoring service that the system is going back online.
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenancePage 4-19© 2004, ADC Telecommunications, Inc.5 SCHEDULED MAINTENANCE REQUIREMENTSTable 4-9 specifies the system maintenance requirements and the recommended maintenanceinterval for each maintenance task. Refer to the manual specified in the table for the requiredmaintenance procedure. Table 4-9. Scheduled MaintenanceINTERVAL ITEM REQUIREMENT1 month Battery* Check float voltage.Check system ambient temperature.Check system float current.6 months Battery* Perform 1 month scheduled maintenance tasks.Check individual battery terminal temperature.Check individual battery float voltages.12 months Battery *RU cabinet filter**Perform 1 and 6 month scheduled maintenance tasksComplete detailed physical inspection. Re-torque terminal connections. Perform general system maintenance. Perform cabinet maintenance.Remove and clean the RU cabinet filter. Refer to the appro-priate Remote Unit Installation and Maintenance Manual (see Related Manuals section) for the required procedures. 24 months Battery* Perform 1, 6, and 12 month scheduled maintenance tasks. Test battery system for rated capacity. 60 months HU FansSTM FanLPA FansRemove and replace the cooling fans in the HU, STM, and LPA. Refer to the appropriate Installation and Maintenance Manual (see Related Manuals section) for the required proce-dures.* Refer to the PRC-SERIES OPERATING AND FIELD SERVICE MANUAL (provided with the back-up battery system) for the specified battery maintenance procedures. **Though it is not recommended that the RU be installed in a salt-air environment, if done so, clean the cabinet filter on a monthly basis instead of on a 12 month basis. In addition, the RU should be inspected for corrosion due to salt, particularly near the fans and around the connectors. The MTBF of the RU may be impacted if the RU is exposed to salt-air.
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ADCP-75-179 • Preliminary Issue A • September 2004 • Section 5: General InformationPage 5-1© 2004, ADC Telecommunications, Inc.SECTION 5: GENERAL INFORMATION1 WARRANTY/SOFTWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12 SOFTWARE SERVICE AGREEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-13 REPAIR/EXCHANGE POLICY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14 REPAIR CHARGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-25 REPLACEMENT/SPARE PRODUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-26 RETURNED MATERIAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-27 CUSTOMER INFORMATION AND ASSISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3_________________________________________________________________________________________________________1 WARRANTY/SOFTWAREThe Product and Software warranty policy and warranty period for all ADC Products ispublished in ADC’s Warranty/Software Handbook. Contact the Technical Assistance Center at1-800-366-3891, extension 73476 (in U.S.A. or Canada) or 952-917-3476 (outside U.S.A. andCanada) for warranty or software information or for a copy of the Warranty/SoftwareHandbook.2 SOFTWARE SERVICE AGREEMENTADC software service agreements for some ADC Products are available at a nominal fee.Contact the Technical Assistance Center at 1-800-366-3891, extension 73476 (in U.S.A. orCanada) or 952-917-3476 (outside U.S.A. and Canada) for software service agreementinformation.3 REPAIR/EXCHANGE POLICYAll repairs of ADC Products must be done by ADC or an authorized representative. Anyattempt to repair or modify ADC Products without written authorization from ADC voids thewarranty.If a malfunction cannot be resolved by the normal troubleshooting procedures, call theTechnical Assistance Center at 1-800-366-3891, extension 73476 (in U.S.A. or Canada) or952-917-3476 (outside U.S.A. and Canada). A telephone consultation can sometimes resolve aproblem without the need to repair or replace the ADC Product.If, during a telephone consultation, ADC determines the ADC Product needs repair, ADC willauthorize the return of the affected Product for repair and provide a Return MaterialAuthorization number and complete return shipping instructions. If time is critical, ADC canarrange to ship the replacement Product immediately. In all cases, the defective Product must becarefully packaged and returned to ADC.Content Page
ADCP-75-179 • Preliminary Issue A • September 2004 • Section 5: General InformationPage 5-2© 2004, ADC Telecommunications, Inc.4 REPAIR CHARGESIf the defect and the necessary repairs are covered by the warranty, and the applicable warrantyperiod has not expired, the Buyer’s only payment obligation is to pay the shipping cost to returnthe defective Product. ADC will repair or replace the Product at no charge and pay the returnshipping charges.Otherwise, ADC will charge a percentage of the current Customer Product price for the repairor NTF (No Trouble Found). If an advance replacement is requested, the full price of a new unitwill be charged initially. Upon receipt of the defective Product, ADC will credit Buyer with 20percent of full price charged for any Product to be Out-of-Warranty. Products must be returnedwithin thirty (30) days to be eligible for any advance replacement credit. If repairs necessitate avisit by an ADC representative, ADC will charge the current price of a field visit plus round triptransportation charges from Minneapolis to the Buyer’s site.5 REPLACEMENT/SPARE PRODUCTSReplacement parts, including, but not limited to, button caps and lenses, lamps, fuses, and patchcords, are available from ADC on a special order basis. Contact the Technical Assistance Centerat 1-800-366-3891, extension 73476 (in U.S.A. or Canada) or 952-917-3476 (outside U.S.A.and Canada) for additional information.Spare Products and accessories can be purchased from ADC. Contact Sales Administration at1-800-366-3891, extension 73000 (in U.S.A. or Canada) or 1-952-938-8080 (outside U.S.A.and Canada) for a price quote and to place your order.6 RETURNED MATERIALContact the ADC Product Return Department at 1-800-366-3891, extension 73748 (in U.S.A. orCanada) or 952-917-3748 (outside U.S.A. and Canada) to obtain a Return MaterialAuthorization number prior to returning an ADC Product.All returned Products must have a Return Material Authorization (RMA) number clearlymarked on the outside of the package. The Return Material Authorization number is valid for 90days from authorization.
Page 5-3ADCP-75-179 • Preliminary Issue A • September 2004 • Section 5: General Information7 CUSTOMER INFORMATION AND ASSISTANCE© 2004, ADC Telecommunications, Inc.All Rights ReservedPrinted in U.S.A .13944-LWRITE:ADC TELECOMMUNICATIONS, INCPO BOX 1101,MINNEAPOLIS, MN 55440-1101, USAADC TELECOMMUNICATIONS (S'PORE) PTE. LTD.100 BEACH ROAD, #18-01, SHAW TOWERS.SINGAPORE 189702.ADC EUROPEAN CUSTOMER SERVICE, INCBELGICASTRAAT 2,1930 ZAVENTEM, BELGIUMPHONE:EUROPESales Administration: +32-2-712-65 00Technical Assistance: +32-2-712-65 42EUROPEAN TOLL FREE NUMBERSUK: 0800 960236Spain: 900 983291France: 0800 914032Germany: 0180 2232923U.S.A. OR CANADASales: 1-800-366-3891 Extension 73000Technical Assistance: 1-800-366-3891 Connectivity Extension 73475 Wireless Extension 73476ASIA/PACIFICSales Administration: +65-6294-9948Technical Assistance: +65-6393-0739ELSEWHERESales Administration: +1-952-938-8080Technical Assistance: +1-952-917-3475Italy: 0800 782374PRODUCT INFORMATION AND TECHNICAL ASSISTANCE:Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice.In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC furtherdisclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer ofliability applies to all products, publications and services during and after the warranty period. This publication may beverified at any time by contacting ADC's Technical Assistance Center. euro_tac@adc.comasiapacific_tac@adc.comwireless.tac@adc.comconnectivity_tac@adc.com
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