NV40/NV30 Troubleshooting Manual Table of contents Contents Release control record Responding to alarms Corrective maintenance Electrostatic protection Identifying an alarm Troubleshooting tips 1-24 Removing and reinstalling RF power modules 1-30 Using the RF power module extension test jig 1-32 Troubleshooting RF power modules...
Page 6
NV40/NV30 Troubleshooting Manual Table of contents OEM code to manufacturer’s cross-reference Common abbreviations/acronyms Wiring/connector lists Wiring lists provided Wiring lists not provided Connector mating information Wire colours Printed wiring board patterns Reading Electrical Schematics Component values Graphic symbols Logic symbols...
Page 7
NV40/NV30 Troubleshooting Manual Release control record Issue Date Reason 2011-11-10 Release 3 of product (NARF55B) 2012-10-01 Table 1.1: Troubleshooting Alarms - updated alarm descriptions Updated electrical schematic Figure SD-8 2014-12-10 Section 1: added step 1 to Troubleshooting Tips for AUI Screen Lockup (supports software release 4.2.7 or later) Issue 3.2 2014-12-10...
Page 8
NV40/NV30 Troubleshooting Manual Page viii Issue 3.2 2014-12-10...
Troubleshooting RF power modules - see page 1-34 • Fan, IPA and Module Power Supply Replacement - see page 1-44 If none of the procedures and alarms described in this section address your problem, contact Nautel for assistance. See “Technical support” on page...
Page 10
NV40/NV30 Troubleshooting Manual Responding to alarms On-air troubleshooting On-air troubleshooting can be performed from a remote location, or locally at the transmitter site. 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.
NV40/NV30 Troubleshooting Manual Responding to alarms NOTE: Reduce the RF output level to a minimal value when troubleshooting faults in the power amplifier stage while the transmitter’s RF output is connected to the antenna system. Electrostatic protection The transmitter's assemblies contain semiconductor devices that are susceptible to damage from electrostatic discharge.
NV40/NV30 Troubleshooting Manual Responding to alarms Identifying an alarm The best way to identify an alarm is by viewing the front panel’s Transmitter Status page (Figure 1.1). If an alarm exists, the Status button at the bottom of the AUI display will be red. Press or click the Status button to go to the Transmitter Status page.
Page 13
Responding to alarms 4. If the troubleshooting and subsequent replacement of a suspect PWB or RF power module does not remove the fault condition, contact Nautel. NOTE: Before undertaking any troubleshooting, record all AUI meter readings and note if any other alarms are displayed on the Transmitter Status page .
Page 14
NV40/NV30 Troubleshooting Manual Responding to alarms Switching power supply LEDs Each switching power supply contains two LEDs that provide specific status indications. The AC OK LED indicates the status of the incoming ac source to the supply. The LED is green when the ac source is at its normal operating level (between 175 and 180 V ac) and off when the ac source is below an acceptable level or is not present.
Page 15
NV40/NV30 Troubleshooting Manual Responding to alarms Table 1.1: Troubleshooting Alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: +12V This alarm occurs if the +12 V supply from SBC/AUI power supply A Supply A (or B) Fault (U1) or B (U2) is outside its acceptable voltage range (between +10.8 and +13.2 V).
Page 16
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: Check This alarm occurs when a non system inhibiting fault has occurred Active Exciter within the active exciter. The transmitter will likely resume operation. Examples of such faults are IBOC data loss, fan failure, high temperature, or an exciter low voltage power supply rail voltage is out- of-tolerance.
Page 17
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: EEP Fail This alarm occurs if there is no valid EEPROM configuration data to Configuration load. Various parameters will revert back to their failsafe default values. See “Controller: EEP Fail alarms”...
Page 18
Power Limiting high forward power limiting threshold is exceeded [1.063 times the maximum power setting for all modes; e.g., 46,772 W (NV40) or 35,079 W (NV30) 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.
Page 19
Forward Power the high forward power threshold [1.036 times the maximum power setting for all modes; e.g., 45,584 W (NV40) or 34,113 W (NV30) for FM mode]. This alarm occurs only if the exciter ALC cannot respond fast enough to transmitter load changes. Suspect the control/interface PWB (A1).
Page 20
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: Interlock The external interlock input wired to the control/interface PWB (A1) is Open open. Check the interlock connection between TB2-1 and TB2-2 on the control/interface PWB (verify a ground potential at TB2-1). If the interlock is intact, check all external interlock switches.
Page 21
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: IPA PS A This alarm occurs if IPA power supply module A (U9), B (U10) or C (or B or C) Module (U11) is not being detected or has been removed.
Page 22
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: Module 1 - This alarm occurs if one or more of the RF power modules is not 16 Not Responding responding to serial messages. Try swapping the affected module with a module in another location (see “Operating with defective or...
Page 23
Foldback exceeds the SWR foldback threshold [1584 W (NV40 or NV30) for FM mode, 1128 W (NV40 or NV30) for FM+HD mode, 452 W (NV40 or NV30) for HD mode) due to a gradual degrading load match. Each time the SWR foldback threshold is exceeded, the transmitter’s forward power will be reduced until it reaches minimum power, beyond which the transmitter will shut down.
Page 24
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: Very Low This alarm occurs if transmitter’s average forward power falls below Forward Power the low forward power threshold (defaulted to 25% of the preset power level for all modes) due to module failures, combiner/filter faults, reject load faults, or SWR foldback.
Page 25
Can occur of the exciter has been power-cycled, but the transmitter has not, in which case the alarm should clear on its own. If the alarm persists, contact Nautel. Exciter A/B: Need This alarm indicates that NVE setup changes have been made, Reboot For Settings typically via the Hardware Configuration page of the AUI.
Page 26
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Exciter A/B: No HD This alarms occurs, in FM+HD or HD mode, if IBOC data is not Data detected from the Exgine PWB. Digital carriers are muted. Verify the RJ45 cable between the Exgine PWB (A3) and J11 of the NVE exciter PWB (A1) is seated properly.
Page 27
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Exciter A/B: SWR This alarm occurs if the exciter’s peak reflected power exceeds 30 W Shutback due to a transient SWR condition. The exciter’s RF output is temporarily reduced to 0 W.
Page 28
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Module #: Heatsink (Module LED = red) The heatsink temperature of the module has Temp Inhibit exceeded the AUI adjustable threshold. The module will be inhibited and requires a Reset from the AUI to re-enable. If this alarm is accompanied by another alarm, troubleshoot the other alarm first.
Page 29
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Module #: No Front (Module LED = red/amber) The module has not received any serial Panel messages from the Controller for more than 2.5 seconds. This alarm is only displayed as a log entry for the applicable module.
Page 30
NV40/NV30 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Module #: PS 1 (or 2) (Module LED = green/red or amber) This alarm occurs if one of the High Temp two module power supplies (1 or 2) is reporting a high temperature alarm, indicating its operating temperature has exceeded its internal threshold.
Page 31
NV40/NV30 Troubleshooting Manual Responding to alarms Table 1.2: Module Replacement Module Replacement Procedure RF Power Module page 1-28 Power Amplifier PWB page 1-35 Module Cooling Fan page 1-40 Control/Interface PWB page 1-40 Remote Interface PWB page 1-41 Low Voltage Power Supplies...
If the local AUI screen locks up, try the following to restore normal AUI operation: 1. At the transmitter, press the Nautel logo icon in the upper, left corner of the local AUI screen. This should reload the AUI and return you to the login screen. Enter your username and password and continue operation.
Page 33
In the case of the Controller: EEP Fail Configuration alarm, the following parameters will revert to the indicated failsafe default states: – Transmitter Type = NV40 – Redundant Supplies -> IPA = Yes – Redundant Supplies -> Fan = Yes –...
Page 34
NV40/NV30 Troubleshooting Manual Responding to alarms 2. Attempt to reset the alarm by resetting one of the defaulted parameters to its desired value or state. Even if no parameter requires resetting, it is necessary to re-write at least one parameter. Press Apply in the applicable AUI screen.
Page 35
NV40/NV30 Troubleshooting Manual Responding to alarms Figure 1.2: 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.
Page 36
RF power module removed. If you have purchased the RF power module extension test jig (Nautel Part # 206-5350), you can use it to test and troubleshoot RF power modules before returning them to service. Refer to “Using the...
Page 37
NV40/NV30 Troubleshooting Manual Responding to alarms • When maintenance is complete and it is safe to return the transmitter to normal service, enable all RF power module supplies by setting the switch on the front of the associated RF power module(s) to its ‘up’ position.
NV40/NV30 Troubleshooting Manual Responding to alarms Removing and reinstalling RF power modules Removing an RF power module 1. Confirm the location of the RF power module that is being removed. Note the alarm text includes a Module number (1-16) that is not identified on the RF power module. See Figure 1.3 on page 1-31...
Page 39
NV40/NV30 Troubleshooting Manual Responding to alarms Figure 1.3: RF Power Module Numbers/Locations 13 14 15 Partial Front View - Doors Removed for Clarity Enable/Disable Switch Issue 3.2 2014-12-10 Page 1-31...
For the NV40/NV30 transmitter, the test jig can not be used in module positions 1, 8, 9 or 16. Nautel recommends using the test jig in module position 2. Swap RF power modules, as necessary, to move the suspect module to position 2.
Page 41
(INSERTED IN MODULE POSITION) MODULE COVER RUNNER NV MODULE EXTENSION SUPPORT 4. Obtain the NV module extension support (Nautel Part # 206-5330). Install the extension support at the front of the transmitter as shown in Figure 1.4. Secure the extension support using two M5 screws, which are pre-existing on adjacent modules (e.g., modules 1 and 3).
5. Obtain the RF power module to be tested. Remove the RF power module’s right-hand side cover and, using four M4 screws from the cover, install the module cover runner (Nautel Part # 206-5355) at the bottom of the module’s open side. The runner provides added mechanical stability for the module under test while its cover is removed.
Page 43
If a failure occurs, you must replace the entire power amplifier PWB, rather than an individual FET. A spare power amplifier PWB (NAPA20A) is provided in the transmitter station spares kit, if purchased. To order a station spares kit contact Nautel. Failure to observe this recommendation may void your equipment warranty or cause further failures.
Page 44
NV40/NV30 Troubleshooting Manual Responding to alarms 5. 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. 6. Secure the PA PWB on the module's heat sink using the six screws removed in Step Ensure correct orientation (same as the adjacent PWB).
Page 45
NV40/NV30 Troubleshooting Manual Responding to alarms PA Biasing Procedure This procedure describes how to enter the bias data for a replacement PA PWB and store it in the RF power module's EEPROM using the controller debug port and menu. Bias data will be provided on a tag attached to the replacement PA PWB.
Page 46
NV40/NV30 Troubleshooting Manual Responding to alarms NV Controller - 1201370715.41 (2008-01-26T18:05:15) Main Menu ========= Analog Outputs Factory Defaults Channel Interrogation RTC Calibration Presets Enter your choice: 5. Select option 3 - Channel Interrogation. The following menu will display: Channel Interrogation...
Page 47
NV40/NV30 Troubleshooting Manual Responding to alarms 7. Select option 1 to perform a GET command. This allows you to read and verify the stored bias values. The following channel numbers are displayed for the PAs and IPA: 0x0088 0x0089 0x008A...
2. Remove and retain the cooling fan’s two M3 captive screws that secure the fan to the module. 3. 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).
NV40/NV30 Troubleshooting Manual Responding to alarms Remote interface PWB replacement See Figure MD-1 in Section 6 of this manual. 1. Open the left-hand front door to gain access to the remote interface PWB (A2). 2. Remove all customer interface wiring from the remote interface PWB. Note the destination of each wire for ease of reconnecting.
Page 50
Remove the LVPS module and its mounting plate from the transmitter. 5. Remove the two M4 screws that secure the LVPS module to its mounting plate. 6. Locate or obtain a replacement LVPS module (Nautel Part # UG68). Reverse Step 1 Step 5 to reinstall the new LVPS module.
5. Remove the two M4 screws that secure the +12 V power supply module to its mounting plate. 6. Locate or obtain a replacement +12 V power supply module (Nautel Part # UG57). Reverse Step 1 Step 5 to reinstall the new +12 V power supply module.
NV40/NV30 Troubleshooting Manual Responding to alarms Fan, IPA and Module Power Supply Replacement WARNING: Lethal voltages exist inside the transmitter when power is on. Follow replacement instructions carefully to ensure safety for maintenance personnel during power supply replacement. Figure 1.7: Location of Various Power Supply Modules...
The transmitter should resume normal operation and the alarm should clear. 4. If you have purchased the power supply extension assembly (Nautel Part # 206-5750), you can use it to bench test and troubleshoot power supplies before returning them to service.
Page 54
NV40/NV30 Troubleshooting Manual Responding to alarms 2. Obtain the power supply extension assembly (Nautel Part # 206-5750). 3. Carefully push the power supply extension module end (A1) of the assembly into the vacant power supply position so that its card-edge connector mates with the transmitter. No securing hardware is required.
NV40/NV30 Troubleshooting Manual Responding to alarms Single-Board Computer (SBC) Replacement Figure 1.8: Single-Board Computer U6U1 (on the back of the front door) U6W2P1 (U6W2P2 mates with (mates with COM3) U5-COM) (mates with CN4) black wire top-right red stripe bottom; (mates with RST1)
Page 56
Remove the SBC from the front door by removing its four M3 securing screws. 4. Locate or obtain the replacement SBC (Nautel Part # 206-8973). If the replacment SBC does not contain a card (U5) (see Figure 1.8 on page...
Page 57
NV40/NV30 Troubleshooting Manual Responding to alarms Figure 1.9: Upgrade Software - About screen indicates a controller upgrade is available in version 2.7 Issue 3.2 2014-12-10 Page 1-49...
Remote interface PWB (NAPI115A) - see page 2-2 • RF power module (NAA56/01D) - see page 2-3 NV40/NV30 electrical schematics The descriptions in this section all refer to the NV40/NV30 electrical schematics listed in Table 5.1 on page 5-5 of the NV40/NV30 Troubleshooting Manual.
NV40/NV30 Troubleshooting Manual Detailed Circuit Descriptions Digital inputs RFI filtering is provided on all digital input lines to ensure transmitter operation is not interrupted due to RF pick up on control lines. Opto-couplers buffer/isolate the external circuits and prevent unwanted transients from affecting transmitter operation. The digital inputs on connector J24 are shifted in through shift register IC U42.
See electrical schematics Figures SD-22 through SD-27. Each RF power module (1 through 16) provides up to 2750 W (for NV40) or 2062.5 W (for NV30) of RF output power and is comprised of an IPA PA PWB (A9), eight PA PWBs (A1 through A8), a power module interface PWB (A10), a module splitter PWB (A11) and a combiner PWB (A12).
Page 62
NV40/NV30 Troubleshooting Manual Detailed Circuit Descriptions The RF Drive input is applied to cable T1, which is connected as a balun to provide balanced, 180° out-of-phase, RF drive signals to the individual gates of dual N-channel power MOSFET (Q1). Cables T2:A and T2:B, as well as capacitors C2, C6, C7 and C17, inductor L2 (part of R12/R13 leads) and resistors R5, R8 through R10, R12 and R13 provide impedance matching, which transforms the 50 ohm input to low impedance for application to Q1.
Page 63
NV40/NV30 Troubleshooting Manual Detailed Circuit Descriptions PA fail detection The voltages across resistors R88, R90, R93, R96, R98, R99, R101 and R103, representative of the individual PA currents, are applied to differential amplifiers U25, U27 through U29, U31 through U33 and U35. Their output voltages are applied to input channels of multiplexer U30. PA 1 CUR through PA 8 CUR test points are provided at the module's front panel for monitoring.
Page 64
NV40/NV30 Troubleshooting Manual Detailed Circuit Descriptions associated power supply module. A dc voltage, proportional to the module temperature, is applied to the INTAKE TEMP (TP18) or EXHAUST TEMP (TP2) test point, which are available on the module's front panel. These voltages will be approximately 0.8 V at 25°C and will be approximately 3.9 V at 100 C.
When the nautel nomenclature is known: • Refer to the family tree (Figure 3.1) and identify the block(s) associated with the Nautel nomenclature. At the bottom of the main family tree block, a reference is made to “See Part Number Index Tables”. Locate the part's reference designation in the identified reference designation list in this section, noting they are sorted alphanumerically.
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 3.1) to include the reference designation of all higher level assemblies.
Nautel's normal supply source for that part. Note: OEM code 37338 is listed for parts manufactured by Nautel or to a Nautel control drawing. United States of America customers should refer all replacement part orders to Nautel Maine Incorporated (OEM code 57655).
NV40/NV30 Troubleshooting Manual Parts Lists Common abbreviations/acronyms The following abbreviations/acronyms may appear in the Description of Part column: • Denotes item is designed to be installed using Surface Mount Technology. • Denotes item is a Mass Termination Assembly connector. •...
Page 70
NV40/NV30 Troubleshooting Manual Parts Lists Table 3.1: OEM Codes / Manufacturers OEM Code Manufacturer OEM Code Manufacturer PANAS Panasonic SL575 Meanwell Sales Information PHOENIX See 5Y407 See 54583 SARONIX Saronix TEXAS See ER737 SAW84 IEI Technology Corp. U3040 ST Microelectronics...
Page 71
NV40/NV30 Troubleshooting Manual Parts Lists Figure 3.1: NV40/NV30 Family Tree NV40 OR NV30 40 kW (NV40) or 30 kW (NV30) FM BROADCAST TRANSMITTER NARF55B CONTROL/INTERFACE PWB REMOTE INTERFACE PWB NVE300 - 300 W FM EXCITER (A) NVE300 - 300 W FM EXCITER (B)
Page 72
NV40/NV30 Troubleshooting Manual Parts Lists Figure 3.2: NV40/NV30 Family Tree (continued) A21, A24, A27, A33, A36, A39, A42, A51 RF POWER MODULE A54, A57, A60, A66, A69, A72, A75 NAA56/01D RF POWER MODULE (SAME AS A18) A18A1 - A18A9 A18A10...
Page 73
206-1004-02 Cable Set Assy, NV PowerModule RLS 3 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Toroid, Ferrite, 12.7mm, K Mtl LA02 11-262-K 33062 Toroid, Ferrite, 12.7mm, K Mtl LA02 11-262-K 33062 Toroid, Ferrite, 12.7mm, K Mtl LA02 11-262-K 33062 Toroid, Ferrite, 12.7mm, K Mtl...
Page 82
Continued from previous page 206-8084 8 Input Reject PWB Assy 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...
Page 83
Continued from previous page 206-8084 8 Input Reject PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Installed at Next Higher Assy INSTALLED AT NEXT 37338 HIGHER ASSY Resistor, SMT, MF, 221 Ohms,1% 1/4W RAD17 RK73H2BL2210F 59124 Resistor, SMT, MF, 221 Ohms,1% 1/4W...
Page 84
Continued from previous page 206-8084 8 Input Reject PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Resistor, SMT, MF, 3320 Ohms,1% 1/4W RAD31 RK73H2BL3321F 59124 Installed at Next Higher Assy INSTALLED AT NEXT 37338 HIGHER ASSY Installed at Next Higher Assy...
Page 115
Continued from previous page NAPC156A Control/Interface PWB Assy, NV Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C156 Not Used NOT USED 37338 C157 Not Used NOT USED 37338 C158 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C159 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C160 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805...
Page 124
Continued from previous page NAPC156A Control/Interface PWB Assy, NV Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Not Used NOT USED 37338 Not Used NOT USED 37338 Conn, Post Shunt, 2 Pos, .10 Centreline JQ15 390088-2 09482 Conn, Post Shunt, 2 Pos, .10 Centreline...
Page 133
Continued from previous page NAPC156A Control/Interface PWB Assy, NV Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R264 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R265 Not Used NOT USED 37338 R266 Not Used NOT USED 37338 R267 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R268 Resistor,SMT,MF,0.0ohms,Jumper,0603...
NV40/NV30 Troubleshooting Manual Wiring/connector lists Section 4: 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 4.1 on page 4-2 lists the tables containing wiring information.
Page 178
(page 4-2) Table 4.5 Wiring List - NAE105B & /01 NVE300 Exciter (page 4-20) Table 4.7 Wiring List - Ac Distribution Assembly (Nautel Part # 206-5150-01) (page 4-22) Table 4.8 Wiring List - NAA56/01D RF Power Module (page 4-23) Table 4.2: Connector Mating Information Provided...
• Capacitor values are shown in microfarads (uF) • Unidentified diodes are part number 1N4938 (Nautel Part # QAP29) Graphic 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.
NV40/NV30 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.
3-1. Follow the family tree branches to the block that contains the desired reference designation, and associated Nautel nomenclature (e.g., NAPI104/03 Power Module Interface PWB ). Note the reference designations and Nautel nomenclatures of all higher assemblies in the path.
Page 204
2. 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: A18 NAA56/01D RF Power Module > A18A10 NAPI104/03 Power Module Interface PWB .
Page 205
Table 5.1: List of Electrical Schematics Figure # Title SD-1A NV40/NV30 Transmitter - Ac-Dc Power Stage, 3-Phase, 180-264 V ac (Sheet 1A of 3) SD-1B NV40/NV30 Transmitter - Ac-Dc Power Stage, 3-Phase, 312-457 V ac (Sheet 1B of 3) SD-1C...
Page 215
PA VOLTS CONTROL (1B) - TO AC/DC POWER STAGE W28P1 SHEET 2 PA VOLTS CONTROL (1A) + S2060046 VG PA VOLTS CONTROL (1A) - Figure SD-7: NV40/NV30 Transmitter - RF Power Stage (Sheet 1 of 3) Issue 3.2 2014-12-10 SD-7...
Page 216
W80P1 10kW COMBINER/ FILTER ASSY RF POWER 13-16 5kW REJ LD PWR (15/16) MODULE 15 W87P1 PART OF RF POWER MODULE 16 S2060039 V2 Figure SD-8: NV40/NV30 Transmitter - RF Power Stage (Sheet 2 of 3) Issue 3.2 2014-12-10 SD-8...
Page 217
REJ FAN TACH 10 SHEET 3 RXE110 FROM FAN VOLTS (REJECT LOAD B/C) + AC/DC FAN VOLTS (REJECT LOAD B/C) + S2060295 V1 POWER STAGE SHEET 3 Figure SD-9: NV40/NV30 Transmitter - RF Power Stage (Sheet 3 of 3) Issue 3.2 2014-12-10 SD-9...
Page 218
VREF TO SHEET 4 LOCAL REMOTE RF ON RF OFF SUMMARY 4.096V REF TP41 DS12 DS13 DS14 R334 10.0K DATABUS LT1790BIS6-4.096 VOUT AREF R284 R300 R299 R305 R257 TO SHEET 3 C160 C161 C194 GND1 GND2 R281 R296 R252 R253 R236 I/O7 PH2/XCK2...
Page 227
FROM EXTERNAL 10MHz SOURCE W5J1 W5P1 P4** COM(GND) RJ45 AC ENTRANCE LOW VOLTAGE COUPLER MODULE POWER SUPPLY W4P1* W4P2* TO LAN 1 PPS FROM AC LINE POWER SOURCE W2P1* W2P2* EXGINE PWB (90-264VAC) RS-485 (+) (OPTIONAL) COM (GND) LINE/NEUTRAL RS-485 (-) +15V +V +15V NOTES:...
Page 229
SHOWN FOR REFERENCE ONLY REJECT POWER SAMPLE 1 250W 250W 250W 0.001 3320 BAT54HT1 250W 250W 250W 250W 250W 250W REJECT POWER SAMPLE 2 250W 250W 250W 0.001 BAT54HT1 3320 250W 250W 250W 250W 250W 250W REJECT POWER SAMPLE 3 250W 250W 250W...
Page 230
IPA BIAS IPA V IPA O/P PWR RF DRIVE IPA RF DRIVE W3P1 W3P2 PA DRIVE 1 W1P1 W1P2 # POWER - # MODULE FAULT - PA V 1 PA O/P PWR 1 PA 1 (0 ) DS1:A DS1:B BIAS 1 PA DRIVE 2 PA V 2 PA O/P PWR 2...
Page 231
PA RF 1 OUTPUT PA O/P PWR 1 (0 ) 250W PART OF PA RF 2 PA O/P PWR 2 (0 ) COMBINER PWB 250W 0 RF OUT REJECT LOAD t° 250W 250W PA RF 3 10K @ 25C PA O/P PWR 3 PART OF 3320 0.001...
Page 232
* DENOTES INDUCTANCE FORMED BY LEADS OF R12 & R13 PA VOLTS 1000 470pF BIAS 0.01 T3:A Q1:A T2:B RF DRIVE RF OUT 15pF 100pF 0.001 0.01 0.001 Q1:B 15pF 56pF T3:B T2:A 0.01 47.5K S2060206 V2 Figure SD-24: NAPA20C/01 Power Amplifier PWB Issue 3.2 2014-12-10 SD-24...
Page 233
TP26 PA V 1 TP27 R177 R181 1.21M PA V 3 1500 R178 R176 4750 10.0K #HIGH_REJECT_PWR- PA V 5 R183 U38:A TO SHEET 2 R182 15.0K 1000 PA V 7 PA_VOLTS_A TO SHEET 3 R179 C192 R180 C101 TP14 1000 0.01 R156...
Page 236
* DENOTES SHORT CIRCUIT STUB ** DENOTES A MICRO-STRIP TRANSMISSION LINE OF SPECIFIC LENGTH AND CHARACTERISTIC IMPEDANCE. SHOWN FOR REFERENCE ONLY REJECT POWER SAMPLE 1 250W 250W 250W 0.001 BAT54HT1 3320 250W 250W 250W 250W 250W 250W REJECT POWER SAMPLE 2 250W 250W 250W...
Page 237
IPA VOLTS CONTROL (A) + FAN V SAMPLE (B) IPA VOLTS CONTROL (A) - # IPA PS INHIBIT (A) + 0.5W FAN V SAMPLE (A) 0.5W IPA VOLTS CONTROL (B) + FAN VOLTS (MODULES 1 TO 4) IPA VOLTS CONTROL (B) - FAN VOLTS (MODULES 1 TO 4) FAN V (A) FAN V (B)
3-1. Follow the family tree branches to the block that contains the desired reference designation and Nautel nomenclature (e.g., NAPI104/03 Power Module Interface PWB ). Note the reference designations and Nautel nomenclatures of all higher assemblies in the path. Example: A18 NAA56/01D RF Power Module > A18A10 NAPI104/03 Power Module Interface PWB .
Page 239
Then, repeat this procedure until the desired part or assembly is found. Table 6.1: List of Mechanical Drawings Figure # Title MD-1 NV40/NV30 Transmitter (Front View) MD-2 NV40/NV30 Transmitter (Rear View) MD-3 NAPC156A Control/Interface PWB MD-4...
Page 240
MODULE POWER SUPPLY MODULES (U12 - U43) FAN POWER SUPPLY MODULES [A (U7)and B (U8)] IPA POWER SUPPLY MODULES [A (U9), B (U10) and C (U11)] FRONT DOORS REMOVED FOR CLARITY Figure MD-1: NV40/NV30 Transmitter (Front View) Issue 3.2 2014-12-10 MD-1...
Page 241
POWER SUPPLY INTERFACE PWBs INTERFACE PWBs AC DISTRIBUTION ASSEMBLY STATION REFERENCE GROUND BACK DOORS REMOVED +12 V POWER SUPPLIES LVPS FOR CLARITY A and B A and B Figure MD-2: NV40/NV30 Transmitter (Rear and Side Views) Issue 3.2 2014-12-10 MD-2...
Page 243
02 03 05 06 OUTPUTS DS17 DS25 DS33 DS41 DS10 DS18 DS26 DS34 DS42 TRANSMITTER AUDIO EXTERNAL VERY LOW PRESET 1 CHANGEOVER READY LOSS FAULT FWD POWER STATUS ALARM STATUS ALARM ALARM ALARM DS11 DS19 DS27 DS35 DS43 DS12 DS20 DS28 DS36 DS44...
Page 244
NVE EXCITER PWB PA MODULE PA MODULE ASSEMBLY ASSEMBLY EXGINE PWB LED PWB LED PWB BACK VIEW Figure MD-5: NAE105B and /01 NVE300 Exciter Issue 3.2 2014-12-10 MD-5...
Page 246
Figure MD-7: Ac Distribution Assembly (206-5150-01) Issue 3.2 2014-12-10 MD-7...
Page 247
MODULES MODULES MODULES MODULES REJECT REJECT 13 - 16 9 - 12 5 - 8 1 - 4 LOAD B/C LOAD A FAN VOLTS FAN VOLTS +12V SBC/ +12V FAN +12V FAN AUI OUT V OUT V RTN CAUTION: HEATSINKS MAY BE LIVE.
Page 248
19 21 20 23 (U/S) POWER SUPPLY INTERFACE ASSY 206-4060 V CTRL INH FAIL M2060022 V1 Figure MD-9: Power Supply Interface PWB (206-4060) Issue 3.2 2014-12-10 MD-9...
Page 252
(U/S) (U/S) (U/S) (U/S) (U/S) (U/S) (U/S) (U/S) TP10 TP11 TP12 DR D DR C PWR C DR B PWR B DR A PWR A ADDRESS ADDRESS ADDRESS ADDRESS (UPPER) (UPPER) (UPPER) (UPPER) TERM TERM TERM N/C (LOWER) (LOWER) (LOWER) (LOWER) CLSD OPEN CLSD...
Page 253
POWER MODULE INTERFACE COMBINER PA PWBs (A1 - A8) IPA PWB (A9) MODULE SPLITTER COOLING FANS Figure MD-14: NAA56/01D RF Power Module Issue 3.2 2014-12-10 MD-14...
Page 256
PA DRV 1 PA DRV 2 PA DRV 3 PA DRV 4 PA DRV 5 PA DRV 6 PA DRV 7 PA DRV 8 FAN V ENABLE MODULE SPLITTER INHIBIT NAPI105 SER. M2060073 V2 Figure MD-17: NAPI105/01A Module Splitter PWB Issue 3.2 2014-12-10 MD-17...
Page 257
PA RF 8 PA RF 7 PA RF 6 PA RF 5 PA RF 4 PA RF 3 PA RF 2 PA RF 1 COMBINER ASSY 206-1150 REJECT COMB LOAD RF OUT (U/S) -90 RF OUT 0 RF OUT M2060016 V1 Figure MD-18: Module Combiner PWB (206-1150) Issue 3.2 2014-12-10 MD-18...
List of terms Section 7: 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 AES-EBU. digital audio transfer standard. The AES/EBU digital interface is usually implemented using 3-pin XLR connectors (the same type connector used in professional microphones).
Page 260
NV40/NV30 Troubleshooting Manual List of terms A setting that controls power level, frequency and audio parameters. The NV40/NV30 Preset. allows you to pre-program multiple presets. Printed Wiring Board. PWB. Single Board Computer. Refers to the CPU and associated components located on the back of SBC.