Garmin GTN 7XX System Maintenance Manual
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Garmin GTN 7XX System Maintenance Manual

Part 23 aml stc
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System Maintenance Manual
GTN 6XX/7XX Part 23 AML STC
Contains Instructions for Continued Airworthiness
for STC SA02019SE-D
Aircraft Make, Model, Registration Number, and Serial
Number along with the applicable STC configuration
information must be completed in Appendix A and
saved with aircraft permanent records.
190-01007-A1
March 2013
Revision 5

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  • Page 1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Contains Instructions for Continued Airworthiness for STC SA02019SE-D Aircraft Make, Model, Registration Number, and Serial Number along with the applicable STC configuration information must be completed in Appendix A and saved with aircraft permanent records.
  • Page 3 Garmin. Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and to...
  • Page 4 4-1 through 4-8 Section 5 5-1 through 5-20 Section 6 6-1 through 6-28 Section 7 7-1 through 7-24 Section 8 8-1 through 8-2 Appendix A A-1 through A-22 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page B Rev. 5...
  • Page 5 $1,000,000 under Section 2410 of the Export Administration Act of 1979. Include this notice with any reproduced portion of this document. This information in this document is subject to change without notice. Visit the Garmin web site (www.garmin.com) for current updates and supplemental information concerning the operation of Garmin products.

  • Page 6: Table Of Contents

    GPS/SBAS Antenna Cable Overbraid ..................6-20 6.10 WXR HSDB Cable Overbraid ....................6-23 EQUIPMENT CONFIGURATION AND TESTING..............7-1 GTN 6XX/7XX ..........................7-1 GMA 35............................7-6 Configuration Module ......................7-10 Interfaced Equipment .......................7-10 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page ii Rev. 5...
  • Page 7 A.3 Wire Routing ..........................A-9 A.4 Aircraft Wiring Diagrams .......................A-11 A.5 Equipment Location ........................A-11 A.6 Equipment Interfaced to the GTN 6XX/7XX .................A-12 A.7 Equipment Interfaced to the GMA 35..................A-17 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page iii...
  • Page 8 Figure 3-5. GTN Software Loader Card Formatting .................3-3 Figure 3-6. Update Progress Window .......................3-4 Figure 3-7. Update Completion .........................3-4 Figure 3-8. GTN 6XX and GTN 7XX Configuration Mode Pages ............3-6 Figure 3-9. GTN 7XX Updates Page ......................3-7 Figure 3-10. System Information Page ......................3-8 Figure 3-11.
  • Page 9 Table A-2. Equipment Locations ......................A-11 Table A-3. GTN #1 Interfaced Equipment .....................A-13 Table A-4. GTN #2 Interfaced Equipment .....................A-15 Table A-5. Equipment Interfaced to the GMA 35 Audio Panel .............A-17 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page v...
  • Page 10 This page intentionally left blank System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page vi Rev. 5...

  • Page 11: Introduction

    GMA 35 as installed under STC SA02019SE-D. This document satisfies the requirements for continued airworthiness as defined by 14 CFR Part 23.1529 and 14 CFR Part 23 Appendix G. Information in this document is required to maintain the continued airworthiness of the GTN 6XX/7XX and GMA 35. 1.2 Organization...

  • Page 12: Definitions And Abbreviations

    IRU: Inertial Reference Unit LED: Light Emitting Diode LOC: Localizer LOI: Loss of Integrity LRU: Line Replaceable Unit MHz: Mega-Hertz NAV: Navigation OBS: Selected Course PA: Passenger Address System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 1-2 Rev. 5...

  • Page 13: Publications

    Garmin Document 005-00533-C0 Master Drawing List, GTN 6XX/7XX 005-00533-C1 GTN 6XX/7XX Equipment List Supplemental Airplane Flight Manual for the Garmin GTN 6XX/7XX 190-01007-A2 GPS/SBAS Navigation System Supplemental Airplane Flight Manual for Garmin GTN 6XX/7XX GPS/ 190-01007-A5 SBAS Navigation System (GPS Functions Not Approved for IFR...

  • Page 14: Distribution

    This document is required for maintaining the continued airworthiness of the aircraft. When this document is revised, every page will be revised to indicate the current revision level. Garmin Dealers may obtain the latest revision of this document on the Garmin Dealer Resource Center website.

  • Page 15: System Description

    The GTN 6XX WAAS navigators are a family of panel-mounted GPS/NAV/COM navigators. The GTN 6XX units include the GTN 625, GTN 635, and GTN 650. They are 6.25 inches wide and 2.65 inches tall. The GTN 6XX features a 600 by 266 pixel color LCD touchscreen. The GTN 625 is a GPS/...

  • Page 16: Backplate Connectors

    2.2 Backplate Connectors Figure 2-1. GMA 35 Connector Layout Detail - Rear View Figure 2-2. GTN 650 Connector Layout Detail - Rear View System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 2-2 Rev. 5...

  • Page 17: Figure 2-3. Gtn 750 Connector Layout Detail - Rear View

    Figure 2-3. GTN 750 Connector Layout Detail - Rear View 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 2-3...

  • Page 18: Gtn Optional Interfaces

    TAWS Annunciator Panels  Multifunction Displays  Interface Adapters  Synchro Heading Sources  Weather Radar  Iridium Transceiver  ADS-B Traffic and FIS-B Weather Sources System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 2-4 Rev. 5...

  • Page 19: Gtn Block Diagram

    2.4 GTN Block Diagram Figure 2-4. GTN System Interface Diagram 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 2-5...
  • Page 20 This page intentionally left blank System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 2-6 Rev. 5...

  • Page 21: Gtn Control And Operation

    3 GTN CONTROL AND OPERATION 3.1 GTN Controls 3.2 GTN Normal Mode Overview Figure 3-1. GTN 6XX Normal Mode Screen Figure 3-2. GTN 7XX Normal Mode Screen 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 3-1...

  • Page 22: Through

    NOTE An SD card reader is needed to create the GTN Software Loader card using the application that is downloaded from Garmin. The approved readers are SanDisk® SDDR-999 and SDDR-93, although other SD card readers will work. Create a GTN Software Loader Card as follows: 1.

  • Page 23: Figure 3-4. System And Software Version

    CAUTION In order to create a GTN Software Loader Card, the drive that you select will be completely erased. Figure 3-5. GTN Software Loader Card Formatting 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 3-3...

  • Page 24: Figure 3-6. Update Progress Window

    Figure 3-7. Update Completion 9. Eject the card from the card reader (or stop the card reader in Windows). The GTN Software Loader Card is now ready to use. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 3-4...
  • Page 25 2. Insert the GTN Software Loader Card into the GTN 7XX SD card slot (See Section 3.3.1 for instructions on how to create a GTN Software Loader Card). 3. Hold down the HOME key until Garmin is fully lit on the display after power is applied by closing the circuit breaker for the GTN 7XX.

  • Page 26: Gtn Configuration Mode Overview

    1. Remove power from the GTN by opening the circuit breaker. 2. Press and hold the HOME key and reapply power to the GTN (push in the circuit breaker). 3. Release the HOME key when the display activates and the name ‘Garmin’ appears fully lit on the screen.

  • Page 27: Figure 3-9. Gtn 7Xx Updates Page

    11. When the updates are finished, the GTN will display ‘Update Complete!’. When finished, remove power from the GTN and remove the Software Loader Card. Reinsert the database card into the SD card slot. Figure 3-9. GTN 7XX Updates Page 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 3-7...

  • Page 28: Figure 3-10. System Information Page

    GTN. Touch the GTN key and choose which LRU to display. Touch UP or DOWN to view all the information. Figure 3-10. System Information Page System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 3-8...

  • Page 29: Figure 3-11. Gtn 7Xx Setup Pages

    Enhanced lighting allows the user to set the display parameters that affect the backlight and key lighting brightness. Enhanced lighting may be used to configure separate Day/Night lighting curves. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 3-9...
  • Page 30 This page allows the user to customize the configuration of discrete inputs/outputs on the J1001 and J1002 connectors. Waypoints These settings are not used in this STC. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 3-10 Rev. 5...

  • Page 31: Figure 3-12. Gtn 7Xx Options Pages

    3.4.4 GTN Options Page Figure 3-12. GTN 7XX Options Pages 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 3-11...

  • Page 32: Figure 3-13. Gtn 7Xx Taws Configuration Page

    TAWS feature in the GTN. NOTE For first time TAWS enablement, refer to the GTN 6XX/7XX AML STC IM, P/N 190-01007-A3, for additional requirements and checkout procedures. This manual only describes the necessary steps to re-enable the feature for existing installations.

  • Page 33: Figure 3-14. Chart Configuration Page

    5. When the ChartView feature is activated, the ChartView key will be lit green, as shown in Figure 3-14. NOTE The feature unlock card should be provided to the customer after service has been completed. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 3-13...

  • Page 34: Figure 3-15. Com Transmit Power Configuration Page

    5. When the 16W COM feature is activated, the 16W key will be lit green, as shown in Figure 3-15. NOTE The feature unlock card should be provided to the customer after service has been completed. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 3-14 Rev. 5...

  • Page 35: Figure 3-16. Weather Radar Page

    5. When prompted, touch Yes to enable Digital Weather Radars. When the feature is activated, the Digital Radar key will be lit green. NOTE The feature unlock card should be provided to the customer after service has been completed. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 3-15...
  • Page 36 Ground Clutter Suppression. NOTE For first time GWX 70 advanced feature enablement, refer to the GTN 6XX/7XX AML STC IM, P/N 190-01007-A3, for additional installation requirements and checkout procedures. This manual only describes the necessary steps to re-enable the feature for existing installations.

  • Page 37: Figure 3-17. Gtn 6Xx And 7Xx Diagnostics Pages

    This is useful for ensuring that annunciator and signal outputs are properly connected to annunciator lights or other LRUs and that they are receiving the signal. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 3-17...
  • Page 38 This key should only be pressed if the intent is to clear all configuration settings. Touching the Clear Config Module key opens a confirmation window to reset all of the settings stored in the configuration module to their defaults. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 3-18...

  • Page 39: Database Updates

    GTN. The following describes each database and how the databases are updated. See Table 3-1 for a summary of the database location and update rate. The GTN Database card, Garmin P/N 010-00900-00, includes the Basemap, Obstacle, SafeTaxi, and Navigation databases.
  • Page 40 This page intentionally left blank System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 3-20 Rev. 5...

  • Page 41: Instructions For Continued Airworthiness

    Detected errors are indicated as failure annunciations, system messages, or a combination of the two. Operation of the GTN 6XX/7XX and GMA 35 is not permitted unless the inspections described in this section have been completed within time intervals prescribed in Table 4-1. All antennas connected to the GTN should be maintained in accordance with appropriate inspection data for the antenna installation.

  • Page 42: Maintenance Intervals

    GTN unit will remain fully operational, but the GPS signal acquisition time may be increased. There is no loss of function or accuracy of the GTN unit with a dead battery. The battery must be replaced by the Garmin factory repair station or factory authorized repair station. Every 10...

  • Page 43: Visual Inspection

    Clean as needed. 6. Conduct a visual check of the GPS/WAAS antenna cable overbraid if installed. 7. Conduct a visual check of the WXR cable overbraid if installed. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 4-3...

  • Page 44: Electrical Bonding Test

    4.5.1 GTN Bonding Check (Metallic or Tube/Fabric Aircraft) Perform an electrical bonding check as follows: 1. Remove the GTN 6XX or GTN 7XX from the mounting rack. 2. Remove the backplate assembly from the rack. NOTE For GTN 7XX only, if the GMA 35 is installed, it must be removed from its rack and the GMA 35 backplate assembly must be removed prior to performing Step 3.
  • Page 45 5 milliohms. 5. Reinstall the backplate assembly and reinstall the GMA unit in the mounting rack. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 4-5...

  • Page 46: Transient Voltage Suppressor (Tvs) (If Installed)

    If the fuse is good, check the wiring for faults. If the wiring is good, replace the TVS. 3. Verify continuity between P1001-19 and P1001-20. 4. Reinstall the GTN as described in Section 6.1 and reset the GTN’s circuit breaker. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 4-6...

  • Page 47: Figure 4-1. Tvs Assembly Check

    If there is continuity between the power bus and some contacts but not others, check the wir- ing to the ‘open’ contacts and repair as necessary. 6. Reconnect the connector in the TVS assembly. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 4-7...

  • Page 48: Gps/Waas Antenna Cable Overbraid Inspection (If Installed)

    3. Check that the overbraid is securely attached at the bulkhead end. If any of these checks shows evidence of a lightning strike, replace the overbraid assembly in accordance with Section 6.10. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 4-8...

  • Page 49: Troubleshooting

    RF interference at 1575.42 MHz Disconnect the ELT antenna coaxial to from VHF COM. check for possible re-radiation. Move GPS antenna further from the COM antenna. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 5-1...
  • Page 50 (ARINC 429 heading can be monitored on the ARINC Inputs input used). page found on the GTN Diagnostics Wiring connections are incorrect. page. See Section 3.4.5. Check wiring. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 5-2 Rev. 5...
  • Page 51 CDI scaling on EFS software version 1501) FMS #1/#2 GPS’ on FMS #1/#2 inputs as 40/50 is not correct. configuration is not set to appropriate. “KLN 90-GPS”. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 5-3...
  • Page 52 SD card slot. Reload software into the GTN (See mode. Section 3.3). Ensure the GTN powers up in normal mode after this. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 5-4 Rev. 5...

  • Page 53: Gtn Failure Annunciations

    5.2 GTN Failure Annunciations If data fields become invalid, the GTN typically annunciates the failures with a large red X, as shown in Figure 5-1. Figure 5-1. Failure Screen 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 5-5...

  • Page 54: Gtn System Messages

    Garmin stuck in the pressed state. Knob is located on the left technical support. position. side of the unit. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 5-6 Rev. 5...
  • Page 55 Catalog full; not all could not be created because catalog to make room for the waypoints GNS waypoint(s) the user waypoint catalog is full. from the GNS. transferred. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 5-7...
  • Page 56 Alert Text Possible Cause Corrective Action GNS CROSSFILL - Waypoint transfer failed/ Waypoint transfer The data transfer should be reattempted. incomplete failed. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 5-8 Rev. 5...

  • Page 57: Table 5-3. Com Alert Troubleshooting Guide

    Press the COM remote transfer switch to cycle its operation. If the problem persists, contact Garmin technical support. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 5-9...
  • Page 58 Hold remote COM been pressed for at least two seconds. exited by pressing the COM remote transfer key to exit. transfer switch for at least two seconds. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 5-10 Rev. 5...

  • Page 59: Table 5-4. Gps/Sbas Alert Troubleshooting Guide

    The GTN is searching the Wait 20 minutes for the unit to complete the Search-the-sky in sky for GPS satellites. cycle or until the current position is located. progress. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 5-11...

  • Page 60: Table 5-5. Vloc/Gs Alert Troubleshooting Guide

    Verify that the NAV remote transfer switch wiring is correct. If the problem persists, contact Garmin technical support. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 5-12 Rev. 5...

  • Page 61: Table 5-6. Remote Transponder Alert Troubleshooting Guide

    Ensure the aircraft has a clear view of TRANSPONDER 2 - The transponder has the sky. ADS-B is not transmitting insufficient data to support Refer to the transponder installation position. ADS-B. manual. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 5-13...

  • Page 62: Table 5-7. Gad 42 Alert Troubleshooting Guide

    Refer to traffic system been in standby for more than 60 seconds. installation manual. 60 seconds. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 5-14 Rev. 5...

  • Page 63: Table 5-9. Database Alert Troubleshooting Guide

    DATALINK - GDL 88 ADS-B GTN. traffic has failed. The GDL 88 has detected an Refer to the GDL 88 STC internal failure. Installation Manual. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 5-15...

  • Page 64: Table 5-10. Weather Radar Alert Troubleshooting Guide

    WX RADAR SERVICE – Refer to the weather radar Weather radar is reporting a Weather radar needs service. installation manual for system failure. Return unit for repair. troubleshooting. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 5-16 Rev. 5...

  • Page 65: Table 5-11. Taws Alert Troubleshooting Guide

    TAWS configuration is invalid. invalid due to a loss or cycle power to the GTN. GTN needs service. corrupted registry. If the problem persists, contact Garmin technical support. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 5-17...

  • Page 66: Table 5-12. Third-Party Sensor Alert Troubleshooting Guide

    Verify the GTN RX channel is connected to the remote device TX channel. Verify there is only one TX source per RX port. Check wiring. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 5-18 Rev. 5...

  • Page 67: Gma 35 Troubleshooting

    RS-232 communication between the RS-232 ports. GTN 7XX and the GMA 35 is not Check for correct wiring functioning correctly. between the audio panel and the GTN 7XX. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 5-19...

  • Page 68: Gma 35 Failure Annunciations

    AUDIO PANEL - Audio panel is inoperative or connection to Audio panel has failed. GTN is lost. Verify the wiring from the audio Wiring connections are panel to the GTN. incorrect. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 5-20 Rev. 5...

  • Page 69: Equipment Removal And Reinstallation

    CAUTION Be sure not to over-tighten the unit into the rack. The application of hex drive tool torque exceeding 15 in-lbs can damage the locking mechanism. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-1...

  • Page 70: Figure 6-1. Gtn 7Xx Mounting Rack Assembly

    Figure 6-1. GTN 7XX Mounting Rack Assembly System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-2 Rev. 5...

  • Page 71: Figure 6-2. Gtn 6Xx Mounting Rack Assembly

    Figure 6-2. GTN 6XX Mounting Rack Assembly 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-3...

  • Page 72: Table 6-1. Self Test Values

    5° right bank for 5 seconds; commands decreasing right bank at 1°/ second for 5 seconds, until command is 0° bank again. This cycle repeats continuously. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-4 Rev. 5...

  • Page 73: Gma 35

    Be sure not to over tighten the unit into the rack. The application of hex drive tool torque exceeding 15 in-lbs can damage the locking mechanism. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-5...

  • Page 74: Figure 6-3. Gma 35 Mounting Rack Assembly Overview

    Figure 6-3. GMA 35 Mounting Rack Assembly Overview System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-6 Rev. 5...

  • Page 75: Sd Card

    With the label facing right, insert the new SD card by pushing the card straight into the slot and press until it is fully inserted. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-7...

  • Page 76: Nav Antenna Cable Diplexer

    MS21055, MS21057, MS21073 Nutplate, Side-by-side MS21086 Note: Part numbers in parentheses are inactive or cancelled part numbers; these numbers may still be available and/or referenced on packaging material. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-8 Rev. 5...

  • Page 77: Nav Antenna Cable Splitter

    MS21055, MS21057, MS21073 Nutplate, Side-by-side MS21086 Note: Part numbers in parentheses are inactive or cancelled part numbers; these numbers may still be available and/or referenced on packaging material. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-9...

  • Page 78: Configuration Module (P1001 Only)

    The instructions for removal/replacement of a configuration module apply equally to either P/N. Unless otherwise noted, refer to the corresponding backshell assembly drawing when performing the following removal and reinstallation steps. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-10...

  • Page 79: Figure 6-4. Backshell Assembly (Potted Configuration Module)

    3. Insert connector into the configuration module (1). 4. Place the cover (7) back on the connector and reinstall screws (8). See Figure 6-4 for this step. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-11...

  • Page 80: Figure 6-5. Backshell Assembly (Configuration Module With Spacer)

    3. Place the configuration module (1) in position. 4. Insert connector into the configuration module (1). 5. Place the cover (6) back on the connector and reinstall screws (5). System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-12...

  • Page 81: Gtn Fan

    1. Position the fan on the backplate with the fan connector pigtail oriented along the left edge of the backplate, as shown in Figure 6-6. 2. Reinstall screws. 3. Connect fan power connector. Figure 6-6. Fan/Backplate Orientation (GTN 7XX) 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-13...

  • Page 82: Table 6-5. Fan Kit

    Insert newly crimped socket contacts and wires into the appropriate connector housing location as shown in Figure 6-7. 2. Plug the three-conductor wire harness connector into the connector on the fan. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-14...

  • Page 83: Figure 6-7. Fan Wiring Replacement

    Figure 6-7. Fan Wiring Replacement 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-15...

  • Page 84: Tvs And Fuse (Nonmetallic Aircraft Only)

    This section applies to IFR nonmetallic aircraft only. VFR nonmetallic aircraft do not require the use of TVSs or fuses. Certain nonmetallic aircraft will require TVSs at the main power input of the GTN. Refer to the GTN 6XX/7XX AML STC Installation Manual for TVS component part numbers. 6.8.1 Fuse Removal 1.

  • Page 85: Figure 6-8. Tvs/Fuse Replacement (Tvs1/F1)

    4. Apply heat with a soldering iron to opposite end of the TVS assembly so that the bad TVSs can be removed. Use caution when applying heat to the solder joint to ensure that the remaining TVSs aren’t damaged. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-17...

  • Page 86: Figure 6-9. Detail Of Tvs Pin Assembly

    8. Reconnect the power end of the assembly to the power bus 9. Reconnect the ground end of the assembly to ground. 10. Perform a polarity check per Section 6.8.2.1. Figure 6-9. Detail of TVS Pin Assembly System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-18 Rev. 5...

  • Page 87: Figure 6-10. Tvs2 Assembly

    The meter should indicate 2.0 to 2.5 volts when the red lead is attached to the ground terminal lug, and the black lead is attached to the power bus terminal lug. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-19...

  • Page 88: Gps/Sbas Antenna Cable Overbraid

    #10 terminal lug. 9. Connect the remaining end of the antenna cable to the GTN and terminal lug to the P1001 shield block ground. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-20...

  • Page 89: Figure 6-11. Gps/Sbas Antenna Cable Overbraid

    OVERBRAID DOUBLED BACK ON SELF 2" MAX OVERBRAID INTSTALLED OVER ENTIRE OVERBRAID LENGTH OF THE GPS ANTENNA CABLE AIRCRAFT SPRUCE P/N 863 Figure 6-11. GPS/SBAS Antenna Cable Overbraid 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-21...
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  • Page 91: Wxr Hsdb Cable Overbraid

    All overbraid ends must be secured outside the backshell by the strain relief bar (Refer to Figure 6-12). Failure to do so may allow the overbraid ends to contact and short HSDB pins, resulting in weather radar malfunction or damage. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-23...
  • Page 92 This page intentionally left blank System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-24 Rev. 5...
  • Page 93 Figure 6-12. WXR HSDB Cable Overbraid Details Sheet 1 of 2 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-25...
  • Page 94 This page intentionally left blank System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-26 Rev. 5...

  • Page 95: Figure 6-12. Wxr Hsdb Cable Overbraid Details

    Figure 6-12. WXR HSDB Cable Overbraid Details Sheet 2 of 2 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 6-27...
  • Page 96 This page intentionally left blank System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 6-28 Rev. 5...

  • Page 97: Equipment Configuration And Testing

    GTN unit (i.e. 750 for 750, 625 for 625 etc.). If wiring updates are needed or the configuration module is being replaced simultaneously, refer to the GTN 6XX/7XX AML STC Installation Manual P/N 190-01007-A3 for installation instructions. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev.

  • Page 98: Table 7-1. Configuration And Checkout Procedures

    Perform interface check per Replacing a Serial Tuned DME Section 7.4.2.2 (Interface GTN 650/750 Check). Perform the appropriate Replacing a Display interface check per Section GTN 6XX/7XX 7.4.3 (Displays). System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 7-2 Rev. 5...
  • Page 99 Perform the appropriate Replace weather radar interface check per Section GTN 725/750 7.4.6. Perform the fan interface check Replace Fan per Section 7.4.8 (Fan Interface GTN 6XX/7XX Check). 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 7-3...

  • Page 100: Enabled Features

    Checkout Log. A copy of the GTN Configuration and Checkout Log form may be found in the appendices of this document. If any of the settings differ from the checkout log, update the settings to the correct value. For information regarding individual settings, refer to the GTN 6XX/7XX AML STC Installation Manual.
  • Page 101 Tune the unit to a local VHF frequency and verify the receiver output produces a clear and understandable audio output. Verify the transmitter functions properly by contacting another station and getting a report of reliable communications. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 7-5...

  • Page 102: Gma 35

    Configuration Log. A copy of the GTN Configuration Log form may be found in the appendices of this document. If any of the settings differ from the checkout log, update the settings to the correct value. For information regarding individual settings, refer to the GTN 6XX/7XX AML STC Installation Manual. Figure 7-1. Audio Panel Page...
  • Page 103 If the configuration setting “COM 1 is connected as COM 2” is set to True, then the COM 2 microphone should be exercised rather than COM 1. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 7-7...
  • Page 104 2. Verify that the alert audio source is heard in the pilot and copilot headsets and that the audio volume is sufficient for all anticipated cockpit noise conditions. Adjust the audio volume level as needed. For modification of configuration settings, refer to the GTN 6XX/7XX AML STC Installation Manual.
  • Page 105 3. Tune a station on COM 1 and verify that the sound is muted by active COM 1 audio (break squelch on COM 1 if necessary). 4. Verify that stereo audio is also heard in the passenger headsets. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 7-9...

  • Page 106: Configuration Module

    This page allows you to calibrate the OBS resolver, configure the CDI key, selected course for GPS and VLOC, as well as the V-Flag state. Configurable fields are described in the following sections. Figure 7-2. Main Indicator (Analog) Configuration Page System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 7-10...

  • Page 107: Figure 7-3. Vor/Loc/Gs Configuration Page

    Verify OBS operation by checking that the selected course displayed at the top of the page is within 2° of the selected course. Figure 7-3. VOR/LOC/GS Configuration Page 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 7-11...
  • Page 108 OBS card, ensure that the indicated value is within 2° of the value set on the indicator. If the resolver is not within 2°, calibrate the resolver as described in Section 7.4.1.1.2.1. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 7-12 Rev.
  • Page 109 7. If a second GTN is installed, switch to GPS2 data by pressing the 1-2 key on the EFS 40/50 control panel and repeat steps 3 through 5 with the second GTN. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 7-13...
  • Page 110 6. Select VLOC on the GTN and verify that the SN3308 displays NAV 1 or NAV 2 (depending on the GTN navigation source configuration). 7. Using a VOR test set verify that the CDI deviation on the SN3308 is displayed correctly. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 7-14...
  • Page 111 Instrument Panel Self-Test page is displayed. See Section 6.1.1. Select GPS2 by pressing the NAV key on the SN3308. Repeat steps 5 through 9 with the second GTN. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 7-15...
  • Page 112 GTN is). 7. Ensure that the NAV1 (or NAV2) indication does not have a red line through it. Repeat steps 3 through 7 for the second GTN, if installed. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 7-16...
  • Page 113 7.4.3.5 GMX200/MX20 Interface Check The Garmin GMX 200 or MX20 interface should be verified as described in this section. 1. Ensure that the GTN has a 3-D position fix.

  • Page 114: Figure 7-4. Xpdr1 Configuration Page

    ‘X’d rather than the Transponder 2 data field to verify that the wiring is not crossed. (i.e. Transponder 1 is incorrectly connected to the GTN.) Repeat the steps 1 through 3 for the second GTN. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 7-18...
  • Page 115 7.4.5.1 Ryan TCAD Traffic System Interface Check If a Ryan TCAD has been connected to the GTN 6XX/7XX unit, the traffic interface should be verified as described in this section.
  • Page 116 7. Touch the Mode key, set the mode to Off. Repeat steps 1 through 7 for the second GTN 7XX (if installed). System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 7-20...
  • Page 117 GTN #1. Verify that the range on GTN #2 changes and the range on GTN #1 does not change. 13. On each GTN 7XX, use the Mode key to set the mode to Off. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 7-21...
  • Page 118 Message Queue key. Ensure that the “COOLING FAN- the cooling fan has failed” message is not displayed. Note that the fan may take a few minutes to power on if the unit is below normal operating temperature. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 7-22...

  • Page 119: Enabled Features

    Reconfigure TAWS settings per the Configuration Checkout Log. The TAWS configuration settings are located under the GTN Options menu. Figure 7-5. Audio Configuration Page Figure 7-6. TAWS Configuration Page 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 7-23...
  • Page 120 If no audio message is heard, then a fault exists within the audio system or associated wiring and the TAWS capability must be considered non-functional. Verify the TAWS audio wiring to the audio panel. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page 7-24 Rev.

  • Page 121: System Return To Service Procedure

    Record part and serial numbers of any LRU which was replaced.  Record any database updates which were performed during maintenance.  Any other applicable information related to the maintenance work performed on the aircraft. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page 8-1...
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  • Page 123: Appendix A Aircraft Specific Information

    Unit P/N: Mod Level: Unit Model: Serial #: GPS Antenna P/N: GPS Ant Model: GMA 35:  [N/A] Unit P/N: Mod Level: Unit Model: Serial #: 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page A-1...

  • Page 124: Configuration Log

    A.2 Configuration Log GTN 6XX/7XX PART 23 CONFIGURATION LOG - GTN #1 Configuration (GTN Setup Menu) GTN Software Versions Main Board GPS/WAAS Board NAV Board Software: Software: Software: Boot Code: Boot Code: COM Board FPGA: FPGA: Software: Touch Controller Board...
  • Page 125 GTN 6XX/7XX PART 23 CONFIGURATION LOG - GTN #1 Configuration (GTN Setup Menu) (Continued) COM Configuration (GTN 635/650/750 Only) VOR/LOC/GS Configuration (GTN 650/750 only) COM Radio: NAV Radio: Enabled Disabled Enabled Disabled COM RF Squelch: ARINC 429 TX Speed: High...
  • Page 126 GTN 6XX/7XX PART 23 CONFIGURATION LOG - GTN #2 Configuration (GTN Setup Menu) GTN Software Versions Main Board GPS/WAAS Board NAV Board Software: Software: Software: Boot Code: Boot Code: COM Board FPGA: FPGA: Software: Boot Code: Touch Controller Board Software:...
  • Page 127 GTN 6XX/7XX PART 23 CONFIGURATION LOG - GTN #1 Configuration (Continued) (GTN Setup Menu) Lighting Configuration Lighting Bus Configuration Lighting Configuration Lighting Configuration Bus 1 Bus 2 Display Source: Photocell Lighting Bus 1 Display Minimum Level: 14 VDC 14 VDC...
  • Page 128 GTN 6XX/7XX PART 23 CONFIGURATION LOG - GTN #2 Configuration (GTN Setup Menu) (Continued) COM Configuration (GTN 635/650/750 Only) VOR/LOC/GS Configuration (GTN 650/750 only) COM Radio: NAV Radio: Enabled Disabled Enabled Disabled COM RF Squelch: ARINC 429 TX Speed: High...
  • Page 129 GTN 6XX/7XX PART 23 CONFIGURATION LOG - GTN #2 Configuration (Continued) (GTN Setup Menu) Lighting Configuration Lighting Bus Configuration Lighting Configuration Lighting Configuration Bus 1 Bus 2 Display Source: Photocell Lighting Bus 1 Display Minimum Level: 14 VDC 14 VDC...
  • Page 130 Copilot PA: TEL: Present Not Present Crew Audio: Music 1: Present Not Present Alert Audio Sum: Music 2: Present Not Present Marker Beacon: Present Not Present Notes System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page A-8 Rev. 5...

  • Page 131: Wire Routing

    A.3.1 Single Engine The following diagram depicts approximate location of all LRUs and antenna(s) along with the wire routing for the GTN 6XX/7XX and GMA 35 throughout the aircraft structure for a single-engine aircraft. 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev.
  • Page 132 The following diagram depicts approximate location of all LRUs and antenna(s) along with the wire routing for the GTN 6XX/7XX and GMA 35 throughout the aircraft structure for a twin-engine aircraft. System Maintenance Manual GTN 6XX/7XX Part 23 AML STC...

  • Page 133: Aircraft Wiring Diagrams

    STC installation manual detailing which equipment was installed and how it was connected. NOTE Electrical loads for equipment installed by this STC are listed in the GTN 6XX/7XX AML STC Installation Manual. A.5 Equipment Location Table A-2 lists the splitter and diplexer. Check all that apply and add a brief description of the location.

  • Page 134: Equipment Interfaced To The Gtn 6Xx/7Xx

    Covered by GTN STC Installation Manual?: See Section 3 of this document. Check “Yes” if the equipment is listed in Appendix C of the GTN 6XX/7XX AML STC Installation Manual. Check “No” if the equipment is not listed in Appendix C of the GTN 6XX/7XX AML STC Installation Manual.

  • Page 135: Table A-3. Gtn #1 Interfaced Equipment

     Yes  No TAWS  Yes  No  Yes  No (external to GTN) Weather Source:  Yes  No  Yes  No WX-500 Stormscope 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page A-13...
  • Page 136  Yes  No If a second GTN is not installed in the aircraft, check this box and do not fill out Table A-4.  [GTN #2 Not Installed] System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page A-14...

  • Page 137: Table A-4. Gtn #2 Interfaced Equipment

     Yes  No TAWS  Yes  No  Yes  No (external to GTN) Weather Source:  Yes  No  Yes  No WX-500 Stormscope 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page A-15...
  • Page 138  Yes  No (e.g., GAD 42) Synchro  Yes  No  Yes  No Heading Source Weather Radar  Yes  No  Yes  No System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1 Page A-16 Rev. 5...

  • Page 139: A.7 Equipment Interfaced To The Gma 35

     Yes  No NAV Radio #1 Yes  No NAV Radio #2 Yes  No NAV Radio #3 Yes  No NAV Radio #4 Yes  No 190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC Rev. 5 Page A-17...
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