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4: TROUBLESHOOTING MANUAL NV5LT/NV3.5LT RANSMITTER Document ID: NHB-NV3.5LT-NV5LT-TRB Version: Issue Date: 2016-03-10 Status: Standard Making Digital Radio Work...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL TABLE OF CONTENTS CONTENTS Contact Information 4.iii RELEASE CONTROL RECORD 4.vii Responding to alarms 4.1.1 Corrective Maintenance 4.1.1 Electrostatic Protection 4.1.3 Identifying an Alarm 4.1.4 Accessing the Inside of the Transmitter 4.1.28 Troubleshooting Tips 4.1.30 Replacement Procedures 4.1.39...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL TABLE OF CONTENTS Common Abbreviations/Acronyms 4.2.4 Wiring/connector lists 4.3.1 Wiring Lists Provided 4.3.1 Wiring Lists Not Provided 4.3.1 Connector Mating Information 4.3.1 Wire Colours 4.3.1 Printed Wiring Board Patterns 4.3.1 Reading Electrical Schematics 4.4.1 Component Values 4.4.1 Graphic and Logic Symbols 4.4.1...
Troubleshooting Tips - see page 4.1.30 Replacement Procedures - see page 4.1.39 If none of the procedures and alarms described in this section address your problem, contact Nautel for assistance. See “Technical support” on page Corrective Maintenance Corrective maintenance procedures consist of identifying and correcting defects or deficiencies that arise during transmitter operation.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Remote Troubleshooting Remote on-air troubleshooting consists of monitoring the transmitter's radiated signal using an on-air monitor or via a LAN connection, and observing the status of each remote fault alarm indicator. Information obtained from these sources should enable an operator to decide whether an alarm response may be deferred to a more convenient time, an immediate corrective action must be taken, or if a standby transmitter must be enabled (if one is available).
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Electrostatic Protection The transmitter's assemblies contain semiconductor devices that are susceptible to damage from electrostatic discharge. The following precautions must be observed when handling an assembly which contains these devices. CAUTION! Electrostatic energy is produced when two insulating materials are rubbed together.
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Identifying an Alarm You can identify an alarm locally by viewing the front panel (see “Front Panel Alarm Checks”) or remotely by viewing the AUI’s Transmitter Status page (see “Controller/Exciter Front Panel Alarm Checks” on page 4.1.6).
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If troubleshooting and subsequent replacement of a suspect PWB or module causes the alarm to disappear from the View Alarms screen, the alarm has been successfully cleared. If the fault condition does not clear, contact Nautel. VERSION 3.3 2016-03-10 PAGE 4.1.5...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Controller/Exciter Front Panel Alarm Checks There are two LEDs on the left-hand side of the Controller/Exciter that provide information about its operational status - Power and Status (see Figure 4.1.3). The Power LED will illuminate green when a valid LVPS input voltage is applied to the A2J1 connector and +5V is present to power the LED.
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Exciter A or B: All alarms in this sub-system apply to an exciter (A or B). Rack #: All alarms in this sub-system apply to a rack (cabinet) (only 1 for NV5LT/NV3.5LT) RF Module #: All alarms in this sub-system apply to a specific RF power module (1 through 2) Figure 4.1.4: Transmitter Status Page...
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If troubleshooting and subsequent replacement of a suspect PWB or module causes the alarm to disappear from the Transmitter Status page, the alarm has been successfully cleared. If the fault condition does not clear, contact Nautel. : Before undertaking any troubleshooting, record all AUI meter readings and note if any other NOTE alarms are displayed on the Transmitter Status page .
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Table 4.1.1: Troubleshooting Alarms Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Controller: AC PS (red) Not displayed in AUI or UI status. Configurable as a remote output. This Summary alarms occurs if there are any ac input related alarms present.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Controller: Cutback Output Network This alarm occurs whenever the transmitter experiences a cutback. A Active (amber) cutback (reduction in power) occurs when repeated shutback alarms occur within a prescribed time period.
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[1.063 times the maximum Power Limiting) power setting for all modes; e.g., 5,846 W (NV5LT) or 4,384 W (NV3.5LT) for FM mode]. The transmitter will fold back the forward power each time the threshold is exceeded. This alarm occurs only if the exciter ALC cannot respond fast enough to transmitter load changes.
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Controller: High SWR Output Network This alarm occurs if the transmitter's average reflected power exceeds the (amber) high SWR threshold (140 W). The NV5LT/NV3.5LT takes no action on this alarm. Inspect the antenna and transmission line system for damage or de- tuning.
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This alarm occurs if the backup battery voltage falls below an acceptable Battery level (2.7 V). The NV5LT/NV3.5LT takes no action on this alarm. Use a digital multimeter to measure the battery voltage (with ac power on). If the battery voltage is low, replace the battery.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Controller: Missing Exciter (red) This alarm indicates that there are no presets programmed into the Preset transmitter. In this state, the transmitter’s front panel UI will default to the Figure 2.9.1 on page 2.9.3...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Controller: PS Current Power Supply (amber) This alarm occurs if the transmitter is limiting its output power to avoid Foldback (PS Curr...
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Controller: SRC1 Exciter (amber) This alarm indicates that no valid AES/EBU stream data is being detected on Unlock the selected AES/EBU input. Check audio input cables. The NV5LT/NV3.5LT takes no action on this alarm. Controller: Standby Exciter (amber) This alarm occurs when a standby exciter test has been initiated by the user.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Controller: SWR Output Network (red) This alarm occurs if the transmitter's reflected power exceeds the SWR Shutback shutback threshold (600 W). The transmitter will shut back and attempt to find a safe operating point by entering its SWR foldback mode.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Controller: +5V A Fail Power Supply (red) This alarm occurs if the +5 V supply in the controller is 10% lower or 10% higher than the desired value.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Exciter A/B: Entered Exciter (red) This alarm occurs when the exciter is in “firmware upgrade” mode. It Firmware Upgrade should only be displayed during a transmitter software upgrade.
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(AUI, UI) Exciter A/B: Low Exciter (amber) This alarm occurs if the backup battery voltage falls below 2.7 V. The NV5LT/ Battery NV3.5LT takes no action on this alarm. Use a digital multimeter to check the battery voltage (with ac power on). If the battery voltage is low, replace the battery.
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Exciter (amber) This alarm indicates that no valid AES/EBU stream data is being detected on SRC2) Unlock the selected AES/EBU input. Check audio input cables. The NV5LT/NV3.5LT takes no action on this alarm. Exciter A/B: Summary Not displayed in AUI or UI status. Configurable as a remote output. This Alarm alarm occurs if there are any alarms present.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Exciter A/B: SWR Exciter (red) This alarm occurs if there is a sudden increase in the reflected power sensed Shutback by the exciter due to an external condition (e.g., open or shorted RF drive...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Module #: High Reject Power Amplifier (red) This alarm occurs if the associated module’s reject load power exceeds Power (High Rej) 400 W.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Module #: PA 1-4 Fail Power Amplifier (red) This alarm occurs if (1) the PA voltage for the suspect PA is greater than 16 V;...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Module #: PS A (or B) Power Supply (red) This alarm occurs if one of the two module power supplies (1 or 2) is...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Rack #: This alarm occurs if communication with the controller has been Communication Fail interrupted. This alarm is typically only visible in the Events Log, since it will (Comm Fail) not be transmitted when communication is interrupted.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Front Panel LED Alarm Name Description and Troubleshooting Action (color) (AUI, UI) Rack #: LVPS A (or B) Power Supply (red) This alarm occurs if LVPS A (U2) or LVPS B (U3) is reporting a low ac input Low Line voltage (less than 175 V ac, higher than 90 V ac).
Accessing the Inside of the Transmitter Figure 4.1.5. The front of the NV5LT/NV3.5LT has an upper, hinged door that provides access to the remote interface PWB (A16, if installed) and a removable access panel that provides access to RF power modules 1 and 2 (A8 and A9), LVPS modules A (U2) and B (U3, if purchased), power supply modules (U4 through U7 ) and exciters A (A4) and B (A5, if purchased).
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.5: Front and Rear Access Panels 1/4-TURN LATCHES 8 in front panel 12 in rear panel LOWER, REAR PANEL 10 M5 screws LOCK OUT AC POWER BEFORE REMOVING! VERSION 3.3 2016-03-10 PAGE 4.1.29...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Troubleshooting Tips RF Power Module Faults Power Supply Module and LVPS Faults - see page 4.1.34 RF Power Module Faults There are many alarms on the front panel UI or remote AUI, prefixed by the text RF Module , that indicate faults related to one or more of the RF power modules.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.7: RF Module status Screen RF Power Module Fault Validation Each RF power module has a multi-colour LED on its front panel, which can help in identifying a fault and allowing you to determine whether remedial action is required now or later.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS RF Power Module Troubleshooting Refer to “Operating with Defective or Missing RF Power Modules” on page 4.1.32 for removal and installation instructions and then refer to “Troubleshooting RF Power Modules” on page 4.1.42 detailed troubleshooting information.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Table 4.1.2: Output Power Level vs. PA/Module Failure/Removal RF Output Power (% of original RF output power) PA/Module Failures/Removal Best Case Worst Case 1 RF Power Module 2 RF Power Modules 1 RF Power Amplifier...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Power Supply Module and LVPS Faults There are various power supply module and LVPS module related alarms on the front panel UI or remote AUI. Power supply module alarms are prefixed by the text RF Module and then PS . The number that appears after RF Module (1-2) identifies the position of the affected module.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.8: AUI - Meter List View page 1. Click here to open the Meter List View page 2. Click here to view LVPS meters 3. Click here to view power supply module meters Figure 4.1.9: Module Status - Power Supply Meters...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.10: Rack Status - LVPS meters PAGE 4.1.36 VERSION 3.3 2016-03-10...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Power Supply or LVPS Module Fault Validation Each power supply and LVPS module has four LEDs on its front panel (see Figure 4.1.11, which can help in identifying a fault and allowing you to determine whether remedial action is required now or later.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Table 4.1.3: Other Power Supply LED States Power Supply LED State Condition AC OK DC OK SERVICE FAULT (green) (green) (amber) (red) Thermal alarm (5 degrees before shutdown) Thermal shutdown Defective fan, blown ac fuse, boost stage failure or over...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Replacement Procedures Table 4.1.4 lists the procedures available in this manual for replacing modules, PWBs and cooling fans. Table 4.1.4: Replacement Procedures Module Replacement Procedure page 4.1.40 RF Power Module page 4.1.43 Power Amplifier PWB RF Module Cooling Fan page 4.1.45...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS RF Power Module Replacement Removing an RF Power Module Confirm the location of the RF power module that is being removed. Note the alarm text includes a Module number (1-2) that is not identified on the RF power module. See Figure 4.1.12 on page...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.12: RF Power Module Numbers/Locations securing screws (2 per module) Enable/Disable Switch Partial Front View - Front Filter Panel Removed VERSION 3.3 2016-03-10 PAGE 4.1.41...
FET. A spare power amplifier PWB (NAPA31C) is provided in the transmitter station spares kit, if purchased. To order a station spares kit or replacement power amplifier PWB contact Nautel. Failure to observe this recommendation may void your equipment warranty or cause further failures.
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: FETs are static sensitive and must be handled in a static protected manner. NOTE Spread a small amount of thermal compound (Nautel Part # HAG39, from the station spares kit), thinly and evenly, on the bottom of the FET flange on the new PA PWB.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS PA Resistance Checks Using a digital multimeter, check the continuity across fuse F1 on the suspect PA PWB. If the measurement is an open circuit, replace the PA PWB (see “PA PWB Replacement” on page 4.1.43).
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Twist the fan’s mating plug three times (reduces RFI) and reconnect it to the splitter PWB. Secure the wiring using a tyrap (Nautel Part # HT66) from the ancillary kit. Re-install the right-hand side cover using retained hardware.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS LVPS / Power Supply Module Replacement WARNING! Lethal voltages exist inside the transmitter when the power is turned on. Follow replacement instructions carefully to ensure safety for maintenance personnel during power supply replacement. Figure 4.1.14: Location of...
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LVPS / Power Supply module. from the front of the transmitter. Locate or obtain a replacement LVPS / Power Supply module. (Nautel Part # UG92B). Using Figure 4.1.15 as a guide, reinstall the new LVPS / Power Supply module.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Verify that the AC OK and DC OK LEDs, on the front of the LVPS / Power Supply module, are solid green. : The FAULT LED (red) may blink temporarily until communication is established between the NOTE power supply and the transmitter.
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Remote Interface PWB Replacement Using Figure 4.1.16 as a guide, replace the remote interface PWB as follows: Figure 4.1.16: Remote Interface PWB Location Remote Interface PWB UI hinged panel and cabinet D-sub connectors side removed for clarity W20P2 and W21P2 Turn off and lock out the transmitter’s main ac power.
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Remove and retain six sets of mounting hardware from the remote interface PWB. Remove the remote interface PWB from the transmitter. Locate or obtain a replacement remote interface PWB (Nautel Part # NAPI143/01). Set jumpers E1 and E2 on the new remote interface PWB to the same positions as the defective PWB.
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Fan Tray Cooling Fan Replacement Figure 4.1.17. Figure 4.1.17: Removing the Fan Tray Remove the transmitter’s upper, rear panel. Disconnect D-sub cable W5P2 from the fan tray assembly. Remove and retain the M4 screw that secures the fan tray to the transmitter.
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Figure 4.1.18 on page 4.1.52. Obtain a replacement fan (Nautel Part # ZAP50) from the site spares kit, if purchased or a suitable equivalent (vendor part # is Minebea Motor Mfg. Corp. 3115RL-07W-B79-E51). Install the replacement fan using retained screws.
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Reject Load Replacement Using Figure 4.1.19 as a guide, replace a reject load assembly as follows: Figure 4.1.19: Replacing the Reject Load PARTIAL FRONT VIEW (front panel removed) Remove air blocker panel (eight screws).
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From the front of the transmitter, remove the reject load assembly. Obtain a replacement reject load (Nautel Part # NAL14) and install by reversing the instructions in Step 1...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Controller Replacement Figure 4.1.20: Location of Controller Module M5 securing hardware Controller Module PARTIAL FRONT VIEW PARTIAL REAR VIEW (front panel removed) (panels removed) If possible, use the local front panel UI and the remote AUI to record all custom user settings including: network settings, preset/audio settings, user accounts, logs, SNMP configuration, email configuration, time zone, notifications and playlists.
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If you are replacing the controller module’s exciter/control PWB (A1), see “Exciter/Control PWB Replacement - Controller” on page 4.1.57. Obtain a replacement controller module (Nautel Part # NAE106C or newer) and install it by reversing the instructions in Step 4 Step Install the transmitter’s front filter panel and upper, rear panel.
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Exciter/Control PWB Replacement - Controller Using Figure 4.1.21 as a guide, replace the controller module’s exciter/control PWB (A4A1) as follows: Figure 4.1.21: Exciter/Control PWB Location - Controller EXCITER/ CONTROL TOP VIEW (cover removed) Remove the controller module (A4) as described in “Controller Replacement”...
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Slightly lift the front edge of the exciter/control PWB and pull towards the front of the controller. Locate or obtain a replacement exciter/control PWB (Nautel Part # NAPE87A or newer). Remove the "push" lever from the XLR connector as detailed in...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.22: Removing the XLR connector’s “push” lever Figure 4.1.23: Loosening the BNC connector’s locking ring VERSION 3.3 2016-03-10 PAGE 4.1.59...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Exciter Replacement Figure 4.1.24: Location of Exciter Module M5 securing hardware Exciter Module PARTIAL FRONT VIEW PARTIAL REAR VIEW (front panel removed) (panels removed) Ensure the controller module’s integrated exciter (A4) is operating as the main RF drive source and disable automatic changeover (see the Operations &...
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If you are replacing the exciter module’s exciter/control PWB (A1), see “Exciter/Control PWB Replacement - Exciter” on page 4.1.62. Obtain a replacement exciter module (Nautel Part # NAE107 or newer) and install it by reversing the instructions in Step 3 Step Install the transmitter’s front filter panel and upper, rear panel.
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Exciter/Control PWB Replacement - Exciter Using Figure 4.1.25 as a guide, replace the exciter module’s exciter/control PWB (A5A1) as follows: Figure 4.1.25: Exciter/Control PWB Location - Exciter EXCITER/ CONTROL TOP VIEW (cover removed) Remove the exciter module (A5) as described in “Exciter Replacement”...
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Slightly lift the front edge of the exciter/control PWB and pull towards the front of the exciter. Locate or obtain a replacement exciter/control PWB (Nautel Part # NAPE86A or newer). Remove the "push" lever from the XLR connector as detailed in...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Module Control/Interface PWB Replacement Using Figure 4.1.26 as a guide, replace the module control/interface PWB (A3) as follows: Figure 4.1.26: Module Control/Interface PWB Location M3 securing hardware (14 nuts/washers) Module Control/ Interface PWB M3 securing hardware...
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Remove eight M3 screws that connect the PWB’s edge-card connectors to the transmitter. Pull out the module control/interface PWB. Obtain a replacement module control/interface PWB (Nautel Part # NAPC158B) and install it by reversing the instructions in Step 1...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Power Supply Interface PWB Replacement Using Figure 4.1.27 as a guide, replace the power supply interface PWB (A1) as follows: Figure 4.1.27: Power Supply Interface PWB Location Power Supply Interface PWB (A1) M3 securing hardware...
Remove the four M4 screws and retain. Obtain the replacement power supply (Nautel Part # UG31) and install in the UPS assembly using the four M4 screws retained in step 3. Apply ac power to the UPS interface only. Use a DMM to monitor the dc voltage between the +V and -V terminals of the UG31.
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.28: UPS Interface Assembly 220 V ac UPS INPUT UG31 POWER COVER REMOVED SUPPLY FOR CLARITY PAGE 4.1.68 VERSION 3.3 2016-03-10...
To locate the information for a specific part, the assigned reference designation for the part must be known. In addition, the Nautel nomenclature (e.g., NAA61B) assigned to the assembly containing the part or the full reference designation, including the reference designation of all higher assemblies, must be known.
Nautel part (e.g., 219-8101-04) optional kits that are assigned a numbered Nautel part To obtain the full reference designation for a specific part the Nautel configuration control number must be located in the family tree (Figure 4.2.1 on page 4.2.7 Figure 4.2.2 on page...
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The listed number is Nautel's usual or preferred choice. The use of this number does not restrict Nautel from selecting and using commercial equivalents during manufacture, where their use will not degrade circuit operation or reliability.
After entering the OEM (CAGE) code number, manufacturer pertinent information (address, telephone number, fax number, etc.) will be displayed. Please contact Nautel if a part cannot be obtained (see also “On-Line Part Quotes” in the Warranty section of this manual).
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL PARTS LISTS Table 4.2.1: OEM Codes/ Manufacturers OEM CODE MANUFACTURER OEM CODE MANUFACTURER 3WCG0 Ferraz Shawmut Incorporated C & D C & D Technologies 45496 Digital Systems COMET 48862 GC Electronics Comp Corp Components Corporation 49588 S B E Incorporated...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL PARTS LISTS Figure 4.2.1: NV5LT/NV3.5LT Family Tree NV5LT or NV3.5LT 5 kW or 3.5 kW FM BROADCAST TRANSMITTER NARF71B/01 POWER SUPPLY INTERFACE PWB UI INTERFACE PWB MODULE CONTROL/INTERFACE PWB NAPI150A NAPI142A NAPC158B CONTROLLER (with integral EXCITER A)
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL PARTS LISTS Figure 4.2.2: NV5LT/NV3.5LT Family Tree (continued) A14A1 COMBINER/FILTER ASSY 1-INPUT REJECT LOAD ASSY 2-WAY FAN TRAY ASSY 2-WAY FAN TRAY INTERFACE PWB NAF119A NAL14 NAX264 NAPI155 A12A1 A13A1 10kW FILTER ASSY 2-INPUT REJECT LOAD PWB...
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Continued from previous page 219-8101-08 Cableset Assy, 5kW NVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Installed at Next Higher Assy INSTALLED AT NEXT 37338 HIGHER ASSY Cable, Ethernet, 84", Shld, Black, 28AWG, 80degC, UA210 PCF-S84I- with guard UA210G(RoHS)
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219-8108-06 AC/LV Cable Set Assy, 5kW NVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Installed at Next Higher Assy INSTALLED AT NEXT 37338 HIGHER ASSY Installed at Next Higher Assy INSTALLED AT NEXT 37338 HIGHER ASSY Connector,Plug, 2 pos, Socket,20A, 600V, 7.62mm,...
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NAA61B RF Power Module Assy, LDMOS REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE PA PWB Assy,LDMOS NAPA31C 211-1190-03 37338 PA PWB Assy,LDMOS NAPA31C 211-1190-03 37338 PA PWB Assy,LDMOS NAPA31C 211-1190-03 37338 PA PWB Assy,LDMOS NAPA31C 211-1190-03 37338 Splitter/Interface PWB Assy...
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NAE106C Controller Assy, w/FM DigitalExciter, NVLT, CE REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Exciter/Control PWB Assy, VSwith CE NAPE87A 211-3060-01 37338 PS Distribution PWB Assy,Exctr/Cntrllr NVLT NAPS46 219-7150 37338 PA PWB Assy, VS300 Pre-Amp NAPA27A 211-1210-01 37338 PA PWB Assy,LDMOS...
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RF Drive Splitter/ChangeoverAssy, 5kW NVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE RF Drive Splitter/ChangeoverPWB Assy, NVLT NAPH09/01A 219-8160-03 37338 2-Way RF Drive Splitter/AttenPWB Assy (NV5LT) NAPH10 219-8170 37338 A1R3 Not Used NOT USED 37338 A1U1 Not Used NOT USED...
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Continued from previous page NAPE87A Exciter/Control PWB Assy, VSwith CE REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R328 Resistor,SMT,MF,100ohms,1%,1/10W,0603 RFFS26 RK73H1JLTD1000F 59124 R329 Resistor,SMT,MF,100ohms,1%,1/10W,0603 RFFS26 RK73H1JLTD1000F 59124 R330 Resistor,SMT,MF,100ohms,1%,1/10W,0603 RFFS26 RK73H1JLTD1000F 59124 R331 Not Used NOT USED 37338 R332...
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Continued from previous page NAPE87A Exciter/Control PWB Assy, VSwith CE REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R367 Resistor,SMT,MF,1500ohms,1%,1/10W,0603 RFFS40 RK73H1JLTD1501F 59124 R368 Not Used NOT USED 37338 R369 Not Used NOT USED 37338 R370 Resistor,SMT,MF,22.1ohms,1%,1/10W,0603 RFFS18 RK73H1JLTD22R1F 59124...
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NAPI150A Power Supply Interface PWBAssy NVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C001 Cap,SMT,Ceramic,100pF,2%,50V,C0G,0603 CCFS32 C0603C101G5GAC 31433 C002 Cap,SMT,Tantalum,1uF,10%,35V,1411 CTFS02 T494B105K035AS 31433 C003 Not Used NOT USED 37338 C004 Not Used NOT USED 37338 C005 Not Used NOT USED...
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Continued from previous page NAPI150A Power Supply Interface PWBAssy NVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C040 Cap,SMT,Ceramic,0.001uF,10%,50V,X7R,0603 CCFS01 C0603C102K5RAC 31433 C041 Not Used NOT USED 37338 C042 Cap,SMT,Ceramic,0.001uF,10%,50V,X7R,0603 CCFS01 C0603C102K5RAC 31433 C043 Not Used NOT USED 37338 C044 Cap,SMT,Ceramic,0.001uF,10%,50V,X7R,0603...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS SECTION 4.3: WIRING/CONNECTOR LISTS This section contains the wiring information for the hard-wired assemblies of the transmitter, and applicable connector mating information. Wiring Lists Provided Wiring lists are provided in tabular format. Table 4.3.1 on page 4.3.2 lists the tables containing wiring information.
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Wiring List - NAA61B RF Power Module ( Table 4.3.2: Connector Mating Information Provided TABLE # Description Table 4.3.4 page 4.3.6 Connector Mating Information - NV5LT/NV3.5LT Transmitter ( Table 4.3.6 page 4.3.9 Connector Mating Information - NAE106C Controller (with integral exciter) ( Table 4.3.8...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS Table 4.3.3: Wiring List - NV5LT/NV3.5LT Transmitter Source Destination Wire # Colour Size Remarks TB1-5B1 E1-- Green-Yellow TB1-5B2 E1-- Green-Yellow A1E23-- A3E9-- White A1E24-- E16-- Black A1E19-- A3E10-- White A1E20-- E16-- Black A1E25-- A3E7-- White...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS Table 4.3.3: Wiring List - NV5LT/NV3.5LT Transmitter Source Destination Wire # Colour Size Remarks P24-* P20-5 Shield Not Used Not Used E12-- XF1-Center White VERSION 3.3 2016-03-10 PAGE 4.3.5...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS Table 4.3.4: Connector Mating Information - NV5LT/NV3.5LT Transmitter Connector Mate Remarks A13W1P1 A3J2 A2J2 U1H1 A4 - DC INPUT A5A2J1 If A5 installed, else tie back A6A2J1 If A6 installed, else tie back W1P1 A3J5...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS Table 4.3.4: Connector Mating Information - NV5LT/NV3.5LT Transmitter Connector Mate Remarks Not Used Not Used W20P1 A4 - REMOTE I/O-A If A16 installed, else tie back W20P2 A16J4 If A16 installed, else tie back W21P1...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS Table 4.3.5: Wiring List - NAE106C Controller (with integral exciter) Source Destination Wire # Colour Size Remarks A2-A- C1E1-- Link C1E2-- A5-C- Link A2-B- C2E1-- Link C2E2-- A5-B- Link A2-C- C3E1-- Link C3E2-- A5-A- Link...
Resistor power ratings are not shown when less than 0.5 W Unidentified diodes are part number BAS21HT1 (Nautel Part # QDRS01) 24V Unidentified transient suppressors are part number 0603E SDA-TR1 (Nautel Part # QR70) Graphic and Logic Symbols The graphic symbols used on electrical schematics are in accordance with American National Standard ANSI Y32.2-1975 - Graphic Symbols for Electrical and Electronic Diagrams.
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL READING ELECTRICAL SCHEMATICS Unique Symbols Nautel uses unique symbols on electrical schematics to describe logic (two-state) signals. These signals differ from single-state signals or analog signals that may have multiple values. Type of Inputs and Outputs On electrical schematics, names used to describe logic (two-state) input and output signals are prefixed with a # symbol.
4.2.1. Follow the family tree branches to the block that contains the desired reference designation, and associated Nautel nomenclature (e.g., NAPA31B Power Amplifier PWB ). Note the reference designations and Nautel nomenclatures of all higher assemblies in the path. Example: A4 Power Amplifier PWB .
Section 4.2, “Parts Lists” on page 4.2.1. Follow the family tree branches to the block that contains the desired reference designation, while noting the Nautel nomenclatures and names of all higher assemblies in the path. Example: A4 Power Amplifier PWB . NAE106C Exciter/Controller Assembly >...
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL READING ELECTRICAL SCHEMATICS Table 4.4.1: List of Electrical Schematics Figure # Title SD-1 NV5LT/NV3.5LT Transmitter - Ac-Dc Power Stage SD-2 NV5LT/NV3.5LT Transmitter - Control/Monitor Stage SD-3 NV5LT/NV3.5LT Transmitter - RF Drive Stage SD-4 NV5LT/NV3.5LT Transmitter - RF Power Stage...
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REJ FAN VOLTS - A5P1 A5P1 RF POWER RF POWER REJ FAN VOLTS - MODULE MODULE REJ FAN VOLTS - (SAME AS A8) (SAME AS A8) S2190210 V2 Figure SD-4: NV5LT/NV3.5LT Transmitter - RF Power Stage VERSION 3.3 2016-03-10 SD-4...
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A7W1P2* A7W1P1* +5V-B PILOT SAMPLE +5V-B AUDIO +3.3V-D PROCESSOR # RF ON STATUS - I2S BCK # REMOTE STATUS - (OPTIONAL) I2S LRCK # PRESET 1 STATUS - I2S PROC DATA IN # PRESET 2 STATUS - I2S PROC DATA OUT # PRESET 3 STATUS - AUDIO PROC TX # EXCITER B STATUS -...
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EXCTR RF OUTPUT TO XMTR RF W1P2 DRIVE INPUT EXCTR PRE-AMP BIAS EXCTR RF MONITOR TO EXTERNAL PRE-AMP PA PWB OUTPUT LVPS IN MONITOR (30-53V) POWER PROBE EXCTR PRE-AMP VOLTS EXCTR FWD PWR SAMPLE EXCITER PA HEATSINK 10K @ 25C EXCTR PA BIAS EXCTR REFLD PWR SAMPLE EXCTR PA VOLTS...
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TEMP+ RF DRIVE 0.01 SPLITTER TEMP TEMP- 0.01 2 NC K1:A EXCITER A RF DRIVE IN 3 NO EXCITER B A1 DETAIL RF DRIVE IN NAPH09/01 RF Drive Splitter/Changeover PWB EXCITER RELAY +15V SUPPLY K1:B # EXCITER RELAY CONTROL (B) - 0.01 0.01 0.028μH...
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PA V 1 0.01 THRU MODULE SPLITTER/ INTERFACE PWB PA V 3 0.01 THRU PA V 1 PA V 3 PA V 2 PA V 2 0.01 PA V 4 THRU COMBINER (LHS) PWB PA V 4 0.028μH 8.2pF 0.01 THRU 0.01 1000pF...
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5 kW Reject Fan 1 5 kW Reject Fan 2 REJ FAN 2 TACH REJ FAN 2 TACH 22pF 470pF 470pF 22pF REJ FAN 1 TACH REJ FAN 1 TACH 22pF 470pF 470pF 22pF A1 DETAIL NAPI155 2-Way FAN V Fan Tray Interface PWB 100K REJ FAN VOLTS +...
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Figure SD-32: NAFP109B Output Power Probe and Sample PWBs VERSION 3.3 2016-03-10 SD-32...
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Nautel Part # 219-5140-02 UPS Interface Upgrade Kit A100 UPS INTERFACE ASSY (+30V PS) +30V TO XMTR LVPS FROM AC LINE 1 DISTRIBUTION PLATE (E10) +30V POWER SOURCE AC GND POWER (88-264VAC) LINE 2/NEUTRAL SUPPLY (47-63Hz) +30V RETURN TO XMTR GND NEAR...
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1 INPUT REJECT REJECT LOAD POWER 250W 250W 250W 0.001 BAT54HT1 3320 250W 250W 250W 250W 250W 250W * DENOTES SHORT CIRCUIT STUB W1P2 W1P1 ** DENOTES A MICRO-STRIP TRANSMISSION LINE OF SPECIFIC REJECT POWER SAMPLE 1 LENGTH AND CHARACTERISTIC IMPEDANCE. S2190450 V1 FAN VOLTS - FAN VOLTS +...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL MECHANICAL DRAWINGS SECTION 4.5: MECHANICAL DRAWINGS This section contains mechanical drawings for assemblies of the transmitter. Dimensional drawings may be included. Refer to Table 4.5.1 on page 4.5.2 for an itemized list. Assembly detail drawings for assemblies and modules that have separate manuals are not included.
4.2.1. Follow the family tree branches to the block that contains the desired reference designation and Nautel nomenclature (e.g., NAPA31C Power Amplifier PWB ). Note the reference designations and Nautel nomenclatures of all higher assemblies in the path. Example: A4 Power Amplifier PWB .
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2-WAY FAN TRAY ASSEMBLY RF DRIVE SPLITTER/ CHANGEOVER ASSEMBLY CONTROLLER ASSEMBLY (EXCITER A) EXCITER B (OPTIONAL) POWER SUPPLY RF POWER INTERFACE PWB MODULE SUPPLIES U4/U5=1A/1B U6/U7=2A/2B LVPS A (U2) and LVPS B (U3, OPTIONAL) Figure MD-1: NV5LT/NV3.5LT Transmitter VERSION 3.3 2016-03-10 MD-1...
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EXTERNAL BATTERY PWB OUTPUT POWER PROBE PWB EXCITER/ CONTROL POWER SUPPLY DISTRIBUTION PWB POWER AMPLIFIER TOP VIEW PRE-AMPLIFIER LED PWB FRONT VIEW Figure MD-5: NAE106C Controller Assembly (with Integral Exciter A) VERSION 3.3 2016-03-10 MD-5...
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OUTPUT POWER EXCITER/ PROBE PWB CONTROL POWER SUPPLY DISTRIBUTION PWB POWER AMPLIFIER TOP VIEW PRE-AMPLIFIER EXGINE PWB (NOT USED FOR ANALOG OPERATION) LED PWB FRONT VIEW Figure MD-12: NAE107A Exciter Assembly VERSION 3.3 2016-03-10 MD-12...
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R123 (U/S) TP10 (U/S) LVPS IN R128 (U/S) CR11 R108 R109 R149 CR12 CR10 C122 R141 (U/S) R110 C117 GRID1 (U/S) C109 LVPS-B R142 +5V-A C110 +5V-B R111 R112 +15V C111 A B C D E F R113 PS DISTRIBUTION NAPS47 R114 +5V-A...
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V IN V BIAS M2190108 V1 Figure MD-14: NAPA35 Pre-Amplifier PWB VERSION 3.3 2016-03-10 MD-14...
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FRONT VIEW RF DRIVE SPLITTER/ CHANGEOVER L (+) M (-) EXCTR A SPLITTER/CHANGEOVER NAPH09 EXCTR B SER. M2190036 V1 4 WAY RF DRIVE SPLITTER/ATTENUATOR NAPH10 SER. 2-WAY RF DRIVE SPLITTER/ ATTENUATOR M2190029 V1 REAR VIEW Figure MD-15: NAI22A/01 RF Drive Splitter/Changeover Assembly VERSION 3.3 2016-03-10 MD-15...
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COMBINER PWB (RHS) COMBINER PWB (LHS) FRONT REAR VIEW VIEW RIGHT-SIDE VIEW SPLITTER/ COOLING FANS (COVER REMOVED PA PWBs INTERFACE (B1 - B6) (A1 - A4) Figure MD-16: NAA61B RF Power Module VERSION 3.3 2016-03-10 MD-16...
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TOP VIEW 1-INPUT REJECT END VIEW Figure MD-17: NAL14 1-Input Reject Load Assembly VERSION 3.3 2016-03-10 MD-17...
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2-WAY FAN TRAY INTERFACE PWB COOLING FANS x 2 NOTE: Fan B1 is 5 kW Reject Fan 1 Fan B2 is 5 kW Reject Fan 2 Figure MD-18: NAX264 2-Way Fan Tray Assembly VERSION 3.3 2016-03-10 MD-18...
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FAN V FAN TRAY INTERFACE NAPI155 SER. M2190031 V2 Figure MD-19: NAPI155 2-Way Fan Tray Interface PWB VERSION 3.3 2016-03-10 MD-19...
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FRONT REAR A1, A4, A5 (U/S) (U/S) J1 (U/S) M2190112 V1 M2060070 V1 M2060072 V1 (U/S) M2060071 V1 Figure MD-20: NAFP109B Output Power Probe VERSION 3.3 2016-03-10 MD-20...
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL LIST OF TERMS SECTION 4.6: LIST OF TERMS This section defines some of the terms that are used in Nautel documentation. Audio Engineering Society/European Broadcasting Union (AES/EBU) is the name of a digital AES/EBU. audio transfer standard. The AES/EBU digital interface is usually implemented using 3-pin XLR connectors (the same type connector used in professional micros).
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NV5LT/NV3.5LT TROUBLESHOOTING MANUAL LIST OF TERMS PAGE 4.6.2 VERSION 3.3 2016-03-10...