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GNS 400W Series Maintenance Manual

Page 3-1

190-00356-05

Rev. A

SECTION 3

THEORY OF OPERATION

The theory of operation in this section supports the maintenance/support philosophy of board
level repair.

Figure 3-1. GNS 400W Block Diagram

3.1 MAIN

BOARD

The Main Board includes the main unit processor and front panel interfaces as well as rear
interconnect and interfaces to the other boards. This is illustrated in Figure 3-1. The Main Board
contains the main unit power supplies. Two isolated power supplies are included

―

the Main

Power Supplies and the Com Power Supplies. The Main and Com Power Supplies operate
independently (a failure in one of the supplies will not cause a failure of the other supply). The
power supplies are duplicated so that, in a case where the main power supplies fail, the Com
Radio is capable of continued operation.

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Содержание GNS 400W

Страница 1: ...190 00356 05 October 2008 Revision A GNS 400W SERIES MAINTENANCE MANUAL GPS 400W GNC 420W AW and GNS 430W AW...

Страница 2: ...hereto provided that such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further that any unauthorized commercial distributi...

Страница 3: ...ls known to the State of California to cause cancer birth defects or reproductive harm This Notice is being provided in accordance with California s Proposition 65 If you have any questions or would l...

Страница 4: ...e below is subject to change without notice Authorized Garmin Sales and Service Centers are encouraged to access the most up to date bulletin and advisory information on the Garmin Dealer Resource web...

Страница 5: ...011 01058 00 BLACK 011 01058 10 GRAY 011 01058 40 BLACK NOTE 1 011 01058 45 BLACK 28 VDC UPGRADE UNIT 011 01058 50 GRAY NOTE 1 GNC 420AW 011 01059 00 BLACK 011 01059 10 GRAY 011 01059 40 BLACK NOTE 1...

Страница 6: ...s 2 4 SECTION 3 THEORY OF OPERATION 3 1 Main Board 3 1 3 2 VHF Communications Transceiver Com Board 3 3 3 3 Nav Board 3 4 3 4 Glideslope Receiver 3 4 3 5 WAAS GPS Receiver 3 4 3 6 Inverter Board 3 4 3...

Страница 7: ...RES 5 1 Tools 5 1 5 2 Inspection 5 1 5 3 Unit Description 5 1 5 4 Replacement Procedures 5 2 5 5 Periodic Maintenance 5 18 SECTION 6 SERVICE PARTS LIST 6 1 GPS 400W 6 1 6 2 GNC 420W 6 2 6 3 GNC 420AW...

Страница 8: ...Page 4 25 5 1 Data Card Slot Locations 5 3 5 2 Data Card Insertion Removal Detail 5 3 5 3 Top Assembly 5 5 5 4 Main and Nav Chassis 5 7 5 5 Fan Replacement 5 8 5 6 Main Chassis Bottom Cavity 5 10 5 7...

Страница 9: ...s not equipped with Garmin Automated Test Equipment ATE and not having access to Garmin proprietary repair documentation Component level repair is not authorized Send the unit to Garmin for repair whe...

Страница 10: ...y components that fail in normal use Such repairs or replacement will be made at no charge to the customer for parts or labor provided that the customer is responsible for any transportation cost This...

Страница 11: ...0W is a GPS WAAS unit that meets the requirements of Technical Standard Order TSO C146a and is approved for IFR en route terminal non precision and precision approach operations The GNC 420W AW includ...

Страница 12: ...transmitted by Global Positioning System GPS Satellites Display of the stored navigation and map database for use by the pilot flight crew Area navigation functions using the determined position veloc...

Страница 13: ...to meet the German FTZ requirements an external filter may be required to achieve the harmonic requirement 2 3 3 GNS 430W The GNS 430W performs the following functions All functions of a GNC 420W The...

Страница 14: ...1 to 33 V dc GPS 400W Main Connector 700 mA 28 V dc maximum 1 4 A 14 V dc maximum GNC 420W GNC 420AW Main Connector 1 2 A 28 V dc maximum 2 5 A 14 V dc maximum GNS 430W GNS 430AW Main Connector 1 2 A...

Страница 15: ...y Drop Lock 144 dBm Dynamic Range 20 dB Lat Lon Position Accuracy 1 25 meter RMS horizontal 2 meter vertical with WAAS Velocity 1000 knots maximum above 60 000 ft TTFF Time To First Fix 1 45 min typic...

Страница 16: ...neling 60 dB BW is less than 7 37 kHz for 8 33 kHz channeling Spurious Response Greater than 85 dB Modulation AM double sided Emission Designator 6K00A3E Frequency Band 118 00 to 136 99 MHz 25 kHz and...

Страница 17: ...level of a standard VOR deviation test signal produces less than a 50 of standard deflection AGC Characteristics From 99 to 13 dBm input of a Standard VOR Audio Test Signal audio output levels shall...

Страница 18: ...ard VOR Audio Test Signal audio output levels does not vary more than 3 dB Selectivity Nose Bandwidth The input signal level required to produce the reference AGC voltage does not vary more than 6 dB...

Страница 19: ...om the assigned channel At frequencies displaced by 132 kHz or greater the input signal is at least 60 dB down Standard deflection a With a standard deflection FLY DOWN condition 90 Hz dominant the ou...

Страница 20: ...___________________________________________________________ Page 2 10 GNS 400W Series Maintenance Manual Rev A 190 00356 05 Blank Page...

Страница 21: ...rocessor and front panel interfaces as well as rear interconnect and interfaces to the other boards This is illustrated in Figure 3 1 The Main Board contains the main unit power supplies Two isolated...

Страница 22: ...J14 Volume Controls All units include two volume control pots for the Com and Nav Receivers Data Card Interface The Main Board design includes interface for two front panel accessible data base cards...

Страница 23: ...al interface and a battery connection The WAAS Engine provides position and navigation data to the Main CPU via the serial interface and the Main CPU sends commands to the WAAS Engine via the serial i...

Страница 24: ...out in ARINC 429 format Toggles the VOR LOC identifier filter as commanded by the Main Processor Communicates to the Main Processor the detection of a remote frequency transfer key press Drives electr...

Страница 25: ...gnal that provides power to the display It also provides the interface to the data cards 3 8 VIDEO BOARD The Video Board provides two spare RS 232 serial ports through external connector J50 These ser...

Страница 26: ...___________________________________________________________ Page 3 6 GNS 400W Series Maintenance Manual Rev A 190 00356 05 Blank Page...

Страница 27: ...escribed The first method is to observe fault messages on the display and take the recommended actions Figure 4 1 and Table 4 1 If the fault message approach is unproductive minimum performance specif...

Страница 28: ...se on the TAWS Terrain data card The data is not usable Replace the card Altitude input failure N A Return the unit for service Audio database integrity error The unit has detected a problem with the...

Страница 29: ...comm board Return the unit for service COMM needs service N A Replace the comm board COMM push to talk key stuck The external push to talk PTT switch is stuck in the enabled or pressed state Press th...

Страница 30: ...iled N A Replace the WAAS GPS module GPS needs service The unit has detected a failure in its GPS receiver The GPS receiver may still be usable Press the switch again to cycle its operation Return the...

Страница 31: ...memory battery failure or system reset Replace the memory battery Return the unit for service Terrain configuration conflict The current TAWS Terrain configuration is not supported by the hardware The...

Страница 32: ...Actions continued VLOC has failed The unit has detected a failure in the VLOC receiver Replace the nav receiver VLOC needs service N A Replace the nav receiver VLOC not responding Internal system to s...

Страница 33: ...AND CONFIGURATION PAGES NOTE Actual test and configuration pages may vary from what is shown in this section All pages were current at the time of manual publication but are subject to change due to...

Страница 34: ...GPS Date Time Main Inputs 1 Main Discrete Inputs Main Inputs 2 Main Discrete Outputs Instrument Panel Self Test Main Analog Inputs Main Lighting Main CDI OBS Config GPS Date Time Main Status Loopback...

Страница 35: ...V dc The power consumption must not exceed the limits shown in Table 4 3 with the display backlight at maximum brightness Return the unit to Garmin for service if any unit fails the power requirement...

Страница 36: ...ay of the following terrain data card and Jeppesen NAVData card data World Wide Land Data World Wide Terrain Database Airport Terrain Database Data Card profile e g America World Cycle Version Copyrig...

Страница 37: ...y 12 0 V dc to unit pin J1 39 2 Ensure the power supply ground is connected to the unit ground J1 77 and 78 Measured value should be 12 0 5 V dc Memory Battery Voltage At the end of battery life the u...

Страница 38: ...Test Mode GPS Signal Apply a standard GPS test signal to the GPS antenna Let unit acquire satellite 16 and capture the last mode 5 value prior to its transition to mode 0 Verify GPS signal A8H 42 00 t...

Страница 39: ...1059 XX x x x x 16w GNS 430W 011 01060 XX x x x x 10w x x GNS 430AW 011 01061 XX x x x x 16w x x Main Lateral Left Right Outputs Command the test via the main CDI OBS configuration page Figure 4 5 The...

Страница 40: ...V Main Vertical Flag Output Load 333 ohms three 1000 ohm loads across J1 29 and J1 30 Command the test via main CDI OBS configuration page Figure 4 5 Measure J1 29 relative to J1 30 OUT OF VIEW IN VIE...

Страница 41: ...put will sink this current when active Measure at applicable pin Figure 4 6 Main Discrete Outputs Page Test Mode ANNUCIATOR PIN VLOC J1 1 GPS J1 2 WAYPOINT J1 3 TERMINAL J1 4 APPROACH J1 5 MESSAGE J1...

Страница 42: ...75 ohm to GROUND 100 k ohm to GROUND ACTIVE INACTIVE ARINC 429 Transmitter and Receivers Figure 4 8 Main ARINC 429 Page Configuration Page The transmitter lines A and B of the ARINC 429 channel must m...

Страница 43: ...configuration page Figure 4 9 429 RX 1 HIGHSPEED and 429 RX 2 HIGHSPEED Test both 429 receivers and 429 transmitter in high speed Connect 429 transmitter A and B to both 429 receivers Verify 429 RX 1...

Страница 44: ...Connect the transmitter to the receiver Verify GPS RS232 2 OK via the main RS232 config test page Figure 4 10 GPS RS232 3 Connect the transmitter to the receiver Verify GPS RS232 3 OK via the main RS2...

Страница 45: ...he bearing is selected to 150 degrees Note that the angle displayed is rounded to one tenth of a degree Load Calibrated OBS resolver precision track selector or equivalent For MAIN OBS ROTOR C J1 31 M...

Страница 46: ...d with a VSWR of no greater than 1 2 1 Audio The standard audio load is 500 ohms between COMM AUDIO HI J2 7 and COMM AUDIO LO J2 19 4 5 2 Standard Signals RF Level Units All specifications given for t...

Страница 47: ...ce voltmeter 3 SQUELCH COMPRESSOR TEST I This input disables the compressor and opens the squelch when input is low Vin low 1 Volts 5 mA This input is designed to be operated from a hard switch or rel...

Страница 48: ...s intended to reduce transmitter to receiver interference in a dual radio installation 15 COMM REMOTE TRANSFER I This input switches between the active and standby frequencies when a signal less than...

Страница 49: ...ut must not vary more than 6 dB when the level of an RF signal modulated 30 is held constant at 1000 V and the modulation frequency is varied over the audio frequency range of 350 2500 Hz The audio ou...

Страница 50: ...to 25 or 8 33 kHz mode the channel to 127 mHz 2 Set the test set to 127 000 mHz 1 kHz audio mod 30 mod depth and 1000 V RF output 3 Measure the audio output level from the receiver 4 Set the test set...

Страница 51: ...27 000 and 136 975 kHz and in the 8 33 kHz channel mode at 118 030 127 005 and 136 980 kHz 1 Set the channel spacing to either 25 or 8 33 kHz mode and select the receive test channel 2 Adjust the test...

Страница 52: ...ed 2 mVrms when the volume control is set to rated audio 1 Enable the audio compressor and the squelch 2 Set the channel spacing to the 25 kHz mode 3 Generate an RF signal with RF carrier frequency of...

Страница 53: ...25 1000 Hz distortion 15 2500 Hz distortion 15 Signal Pin Signal Name Reference Pin Reference Name Load J2 7 COMM AUDIO HI J2 19 COMM AUDIO LO 500 Ohms Microphone Intercom The audio level shall not b...

Страница 54: ...mpressor 2 Set the unit for 25 kHz channel spacing with the compressor enabled 3 Set the signal generator for a 127 mHz carrier frequency 1 kHz audio frequency 30 modulation 100 V output level 4 Measu...

Страница 55: ...33 kHz carrier squelch must open within 60 mSec when the RF signal transitions from no signal to 6 0 V modulated 30 at 1 kHz The 25 kHz noise squelch and 8 33 kHz carrier squelch must open within 40...

Страница 56: ...y 6 dB 9 Measure the audio output in ac Vrms hysteresis 10 Verify the following Squelch open point 1 5 V X 6 0 V Hysteresis ac Vrms 10 mVrms Noise Squelch 25 kHz 1 Enable the compressor 2 Set the unit...

Страница 57: ...Change the RF input level to 53 dBm 1 000 V Observe and capture the waveform showing the time it takes for the audio output to stabilize open time Opening Time 8 33 kHz 1 Enable the compressor 2 Set t...

Страница 58: ...level required to produce the reference AGC voltage must not vary more than 6 dB over the input signal frequency range of 2 778 kHz from the assigned channel frequency Measure at channel 127 005 Skir...

Страница 59: ...TEST J2 21 GROUND None Spurious Response The spurious response rejection is a measure of the capability of the receiver to discriminate between the wanted modulated signal at the nominal frequency an...

Страница 60: ...signal generator to the following Carrier Frequency 127 mHz Output Level 1 V Modulation 30 Audio Frequency 1 kHz Measure the reference IF AGC voltage Set the signal generator to the following Carrier...

Страница 61: ...nnels to which the receiver can be tuned but excluding the frequency range between these two channels In the presence of an unmodulated carrier having a level of 7 dBm at the receiver input terminals...

Страница 62: ...riggered with the remote transfer signal 8 Ground the COMM REMOTE TRANSFER pin J2 15 This will return the receiver to 118 000 mHz Observe and capture the waveform showing the time it takes for the aud...

Страница 63: ...ot in the transmit mode 6 Set the spectrum analyzer for a center frequency of 148 400 mHz 10kHz div span 7 Measure the peak RF output power from the comm antenna port 8 Verify peak RF output power 57d...

Страница 64: ...asure the TX CW power in watts 5 Unkey the microphone 6 Repeat steps 2 5 at 127 500 mHz and 136 5 mHz 7 Verify the following 10W com radio 10 14 watts 16W com radio 16 22 watts Modulation Capability T...

Страница 65: ...n is 0 dB 0 5dB Carrier Noise Level The demodulated noise on the transmitter output without audio modulation must be at least 45 dB below the demodulated audio level obtained when the transmitter is m...

Страница 66: ...and apply a standard microphone test signal except set the frequency to 350 Hz 3 Key the transmitter 4 Measure the distortion of the signal after the AM demodulator 5 Unkey the transmitter 6 Repeat st...

Страница 67: ...Key the microphone 4 Measure the RMS audio level 5 Unkey the microphone 6 Repeat steps 1 5 for 127 500 mHz and 136 500 mHz 7 Verify audio level is between 1 12 and 1 68 Vrms Signal Name Signal Pin Re...

Страница 68: ...formula RMS x Sqrt 2 When the transmitter is modulated with a standard microphone input signal the frequency deviation due to unwanted frequency modulation of the carrier must not exceed 1000 Hz Meas...

Страница 69: ...and record as a test failure If test passes proceed 6 Record the reference input level 7 Unkey the microphone 8 Set the audio test signal to 350 Hz at the recorded reference input level 9 Key the mic...

Страница 70: ...MMON J6 2 NAV Composite Video Load NAV COMPOSITE OUT One standard composite video load is 10 000 ohms connected between NAV COMPOSITE OUT J6 8 and GND J6 41 NAV Super Flag Load NAV SUPER FLAG OUT One...

Страница 71: ...nce phase REF and variable phase VAR 30 Hz signal amplitude modulated 30 with respect to the reference phase signal REF The RF input signal must be at a level of 53 dBm and have a frequency within 0 0...

Страница 72: ...tics They must be phase locked in such a manner that their voltage waveforms simultaneously pass through zero in the same direction The maximum simultaneous variation in frequency must not exceed 0 3...

Страница 73: ...ncy of max output must be less than 6 dB when the RF input level is 73 dBm With the IDENT mode selected the difference between the maximum and minimum VOICE IDENT audio output levels measured at the N...

Страница 74: ...e audio SINAD is not be less than 6 dB with a standard VOR audio test signal at RF frequencies of 108 00 mHz 112 50 mHz 112 55 mHz and 117 95 mHz Localizer Optional Test Measure at the NAV AUDIO HI J6...

Страница 75: ...Localizer Test Signal at 108 10 mHz when the RF level is lowered to the Flag threshold level such that it causes the course deviation output NAV LEFT to be less than 50 of standard deflection 50 of st...

Страница 76: ...500 Hz When the RF level of a Standard VOR Test Signal is such that the deviation sensitivity is 1 2 that with a 73 dBm signal Verify that the bearing error is less than 3 degrees at a RF level just a...

Страница 77: ...vary more than 6 dB over the input signal frequency range of fc 9 kHz to fc 9 kHz from the assigned channel frequency Optional Test Skirt Bandwidth At frequencies of fc 36 kHz and fc 36 kHz the input...

Страница 78: ...Hz greater than 150 Hz the deviation of opposite polarity obtained when the signal is modulated with 150 Hz greater than 90 Hz must be within 8 7 2 millivolts of the standard deflection as tested in H...

Страница 79: ...ude modulated simultaneously by 90 and 150 Hz tones so that the sum of their separate modulation levels is 80 2 The tones must have the following characteristics They must be phase locked in such a ma...

Страница 80: ...Deviation Flag When valid information is present flag out of view the course deviation flag output must be 375 80 millivolts When invalid information is present flag in view the course deviation flag...

Страница 81: ...uency Skirt Bandwidth At frequencies displaced by 132 kHz on either side of the assigned channel frequency the input signal level required to produce reference AGC voltage must be at least 60 dB respe...

Страница 82: ...er is tuned to 335 mHz The undesired test signal must consist of a standard glideslope signal in which the 150 Hz signal is modulated at 30 4 8 TESTING FAILURES Table 4 6 lists recommended actions bas...

Страница 83: ...ias Replace GPS Module GPS Signal Replace GPS Module Return the unit for service Time Mark Output Replace GPS Module 4 9 RETURN TO SERVICE TEST When a board is replaced and the unit has been reassembl...

Страница 84: ...___________________________________________________________ Page 4 58 GNS 400W Series Maintenance Manual Rev A 190 00356 05 Blank Page...

Страница 85: ...parts 5 2 INSPECTION Perform the following inspection procedures on an assembled unit before replacing any parts Verify that all screws are secure and in place Verify that the display face is clean Ve...

Страница 86: ...g to the left and the swing arm handle at the bottom front 2 Press the data card into place until it seats on the internal connector and the front of the card is flush with the face of the unit 3 If t...

Страница 87: ..._________________________________________________________ GNS 400W Series Maintenance Manual Page 5 3 190 00356 05 Rev A Figure 5 1 Data Card Slot Locations Figure 5 2 Data Card Insertion Removal Deta...

Страница 88: ...ch Top Cover 2 to Main Chassis 3 and remove Top Cover Replacement Install four screws 1 that attach Top Cover 2 to Main Chassis 3 5 4 2 1 CDU Assembly Figure 5 3 all units Removal 1 Remove Top Cover s...

Страница 89: ...___________________________________________________________ GNS 400W Series Maintenance Manual Page 5 5 190 00356 05 Rev A Figure 5 3 Top Assembly...

Страница 90: ...Shoulder Screws 6 that secure the rear hinge 7 Separate fold open the two chassis 5 If desired the front Nav Chassis Hinge Pins 8 and 9 can be removed to completely separate the two Chassis Fasten Ma...

Страница 91: ...___________________________________________________________ GNS 400W Series Maintenance Manual Page 5 7 190 00356 05 Rev A Figure 5 4 Main and Nav Chassis...

Страница 92: ...units Removing the Fan 1 Separate the Main and Nav Chassis 2 Disconnect the Red and Black Fan Wires 1 from the Main Board 3 Remove three screws 2 attaching Fan to Nav Chassis Attaching the Fan 1 Insta...

Страница 93: ...rd 3 Attach Top Cover Comm Board Removal GNC 420W AW GNS 430W AW 1 Remove Top Cover 2 Remove three Comm Board Covers 4 3 Unsolder Buss Wire Detail A from Coax Connector 4 Remove two screws 6 attaching...

Страница 94: ...___________________________________________________________ Page 5 10 GNS 400W Series Maintenance Manual Rev A 190 00356 05 Figure 5 6 Main Chassis Bottom Cavity...

Страница 95: ...three screws 4 attaching WAAS GPS Module to Main Chassis Main Board all units The Main Board is not a serviceable item but can be removed to replace the Memory Battery Removal 1 Remove CDU Assembly 2...

Страница 96: ...___________________________________________________________ Page 5 12 GNS 400W Series Maintenance Manual Rev A 190 00356 05 Figure 5 7 Main Chassis Top Cavity...

Страница 97: ...t is required to replace the battery Once the Main and Nav Chassis are separated the Main Board is exposed and the Main Board Memory Battery can be replaced Removal 1 Remove all electrical grounds fro...

Страница 98: ...___________________________________________________________ Page 5 14 GNS 400W Series Maintenance Manual Rev A 190 00356 05 Figure 5 8 Memory Battery Location on the Main Board...

Страница 99: ...four screws 9 that attach Nav Receiver Board 8 to Nav Chassis 7 Replacement 1 Install two screws 6 and attach 44 pin connector to Nav Chassis 7 and install Nav Receiver Board 8 2 Install four screws 9...

Страница 100: ...v A 190 00356 05 Replacement 1 Install three screws 11 that attach Glideslope Board 10 to Nav Chassis 7 and attach Glideslope Board 2 Solder connector wire from Coax Connector Detail A 3 Connect Ribbo...

Страница 101: ...___________________________________________________________ GNS 400W Series Maintenance Manual Page 5 17 190 00356 05 Rev A Figure 5 9 Nav Chassis Cavity...

Страница 102: ...cotton cloth dampened with clean water Do not use any chemical cleaning agents Take care to not scratch the display surface Display Backlight The display backlight lamp is rated by the manufacturer a...

Страница 103: ...vailable but are not listed in the tables Contact Garmin Aviation Product Support for part availability and pricing Contact Garmin for the correct COMM Board service part number if it is being replace...

Страница 104: ...5 6 360 00009 00 3V Lithium Battery Figure 5 5 2 S11 01097 00 GPS WAAS Module Figure 5 2 1 125 00034 01 Main Chassis Figure 5 2 1 125 00034 01 Main Chassis W O Studs 6 3 GNC 420AW Reference Designator...

Страница 105: ...Figure 5 7 10 S12 00212 11 Glideslope Board Figure 5 5 2 S11 01097 00 GPS WAAS Module Figure 5 3 4 371 00001 01 Fan Figure 5 2 1 125 00034 01 Main Chassis Figure 5 2 1 125 00009 00 Main Chassis W O S...

Страница 106: ...___________________________________________________________ Page 6 4 GNS 400W Series Maintenance Manual Rev A 190 00356 05 Blank Page...

Страница 107: ...intenance Manual Page A 1 190 00356 05 Rev A APPENDIX A SYSTEM INTERCONNECTS This Appendix contains pin descriptions for the rear panel connectors These descriptions can aid in the fabrication of test...

Страница 108: ...Out 3 WAYPOINT ANNUNCIATE Out 4 TERMINAL ANNUNCIATE Out 5 APPROACH ANNUNCIATE Out 6 MESSAGE ANNUNCIATE Out 7 OBS ANNUNCIATE Out 8 SPARE ANNUNCIATE Out 9 INTEGRITY ANNUNCIATE Out 10 ANNUNCIATE D Out 11...

Страница 109: ...LOCK Out 44 MAIN OBI DATA Out 45 MAIN OBI SYNC Out 46 GPS ARINC 429 OUT A Out 47 GPS ARINC 429 OUT B Out 48 GPS ARINC 429 IN 1 A In 49 GPS ARINC 429 IN 1 B In 50 GPS ARINC 429 IN 2 A In 51 GPS ARINC 4...

Страница 110: ..._____________________________ Page A 4 GNS 400W Series Maintenance Manual Rev A 190 00356 05 74 COM REMOTE RECALL 1 In 75 DEMO MODE SELECT In 76 RESERVED 77 AIRCRAFT GROUND 78 AIRCRAFT GROUND 1 Main s...

Страница 111: ...4 COM MIC KEY In 5 INTERCOM MIC HI In 6 COM MIC AUDIO HI In 7 500 COM AUDIO HI Out 8 RESERVED 9 RESERVED 10 RESERVED 11 AIRCRAFT POWER In 12 AIRCRAFT POWER In 13 RESERVED 14 TRANSMIT INTERLOCK In 15...

Страница 112: ...13 VOR OBS STATOR D In 14 PARALLEL DME 8MHZ Out 15 VOR LOC SUPERFLAG Out 16 500 VOR ILS AUDIO HI Out 17 500 VOR ILS AUDIO LO Out 18 SERIAL DME CLOCK Out 19 SERIAL DME DATA Out 20 SER DME CHAN REQ PAR...

Страница 113: ...aintenance Manual Page A 7 190 00356 05 Rev A 36 VOR ILS ARINC 429 IN A In 37 PARALLEL DME 800KHZ Out 38 GLIDESLOPE SUPERFLAG Out 39 PARALLEL DME 400KHZ Out 40 PARALLEL DME 200KHZ Out 41 AIRCRAFT GROU...

Страница 114: ...___________________________________________________________ Page A 8 GNS 400W Series Maintenance Manual Rev A 190 00356 05 Blank Page...

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