G1000 SYSTEM MAINTENANCE MANUAL (LJ/VLJ AIRCRAFT)

2.2 Navigation and Communication Systems...................................................... 2-4 2.3 GFC 700 Interconnect.................................................................................... 2-5 2.4 GDU 1xxx Overview ..................................................................................... 2-6 2.4.1 GDU Communication .................................................................................... 2-7 SECTION 3—EQUIPMENT DESCRIPTION 3.1 Displays (MFD/PFD)..................................................................................... 3-1 3.1.1 GDU 1500...................................................................................................... 3-1 3.1.2 GDU 1040A ................................................................................................... 3-2 3.1.3 GDU 1240A ................................................................................................... 3-2 3.2 GMA 1347/1347D Audio Panel .................................................................... 3-3 3.3 GIA 63/63W Integrated Avionics Unit.......................................................... 3-3 3.4 GRS 77 Attitude, Heading, and Reference Unit (AHRS).............................. 3-4 3.5 GMU 44 Magnetometer................................................................................. 3-4 3.6 GDC 74B Air Data Computer........................................................................ 3-5 3.7 GEA 71 Engine/Airframe Unit ...................................................................... 3-5 3.8 GTX 33/33D Transponder ............................................................................. 3-6 3.9 GDL 69/69A Satellite Data Link Receiver.................................................... 3-6 3.10 GDL 90 GPS WAAS Receiver/UAT............................................................. 3-7 3.11 GSA 80/81 AFCS Servos/GSM 85(A) Servo Gearbox ................................. 3-7 3.12 GWX 68 Weather Radar................................................................................ 3-8 3.13 GTP 59 OAT Probe ....................................................................................... 3-8 3.14 GTX 33/33D Mode S Transponder................................................................ 3-9 3.15 GCU 475 MFD Control Unit ......................................................................... 3-9 3.16 GMC 715 AFCS Control Unit ..................................................................... 3-10 3.17 GSD 41 Data Concentrator .......................................................................... 3-10 3.17.1 GRC 10XM Remote Control ....................................................................... 3-10 ______________________________________________________________ Page iv G1000 System Maintenance Manual Rev. A 190-00903-00 3.17.2 GRT 10XM Wireless Transceiver ............................................................... 3-11 3.18 GCU 477 ...................................................................................................... 3-11 3.19 GSR 56/GDL 59 .......................................................................................... 3-12 SECTION 4—CONFIGURATION MODE 4.1 Introduction.................................................................................................... 4-1 4.2 Configuration Page Groups and Pages .......................................................... 4-2 4.2.1 User Interface................................................................................................. 4-2 4.2.2 Softkeys.......................................................................................................... 4-2 4.3 Secure Digital (SD) Cards ............................................................................. 4-3 4.4 Configuration Files ........................................................................................ 4-5 4.4.1 Configuration File Retention ......................................................................... 4-5 4.5 'SET' and 'ACTIVE' Commands .................................................................... 4-8 4.5.1 'SET' and 'ACTIVE' Softkeys ........................................................................ 4-8 4.6 Configuration Status ...................................................................................... 4-9 4.7 Data Transmission Indicators ........................................................................ 4-9 SECTION 5—TROUBLESHOOTING 5.1 Troubleshooting Methods .............................................................................. 5-1 5.1.1 Visual Hardware Inspection........................................................................... 5-1 5.1.2 LRU Failure Annunciations........................................................................... 5-1 5.1.3 System Status Page Failure Indications ........................................................ 5-8 5.1.4 Data Path Failure Messages........................................................................... 5-8 5.1.5 Configuration Page Data Path Indicators....................................................... 5-9 5.1.6 Advisory Messages ...................................................................................... 5-36 5.1.7 Common Problems....................................................................................... 5-68 5.1.8 Using Configuration Pages in Troubleshooting........................................... 5-77 5.1.9 Troubleshooting the GFC 700 Autopilot ................................................... 5-102 5.2 Calibration Procedures............................................................................... 5-114 5.2.1 GDC 74B Calibration Procedure ............................................................... 5-114 5.2.2 GEA 71 Standby Battery HSCM Calibration Procedure........................... 5-120 5.3 Backplate Connectors ................................................................................ 5-125 ______________________________________________________________ G1000 System Maintenance Manual Page v 190-00903-00 Rev. A SECTION 6—REPLACEMENT PROCEDURES 6.1 GDU 1xxx...................................................................................................... 6-2 6.2 GMA 1347D .................................................................................................. 6-2 6.3 GIA 63/63W................................................................................................... 6-2 6.4 GRS 77........................................................................................................... 6-3 6.5 GMU 44 ......................................................................................................... 6-3 6.6 GDC 74B ....................................................................................................... 6-3 6.7 GEA 71 .......................................................................................................... 6-4 6.8 GTX 33 .......................................................................................................... 6-4 6.9 GDL 69/69A .................................................................................................. 6-5 6.10 GDL 90 .......................................................................................................... 6-5 6.11 GSA 81........................................................................................................... 6-5 6.12 GSM 85(A) .................................................................................................... 6-6 6.13 GSD 41........................................................................................................... 6-6 6.14 GRT 10........................................................................................................... 6-6 6.15 GDL 59/GSR 56 ............................................................................................ 6-7 6.16 GCU 475/477 ................................................................................................. 6-7 6.17 GMC 710/715 ................................................................................................ 6-7 6.18 GWX 68 ......................................................................................................... 6-7 6.19 GTA 82 .......................................................................................................... 6-8 6.20 Configuration Module.................................................................................... 6-9 6.21 GEA 71 Backplate Thermocouple ............................................................... 6-10 SECTION 7—SOFTWARE INSTALLATION AND TESTING 7.1 Upload Overview ........................................................................................... 7-1 7.1.1 System Upload Page Softkeys ....................................................................... 7-2 7.1.2 GDU 1xxx...................................................................................................... 7-2 7.1.3 GIA 63W........................................................................................................ 7-4 7.1.4 GMA 1347D .................................................................................................. 7-7 7.1.5 GRS 77/GMU 44 ........................................................................................... 7-9 7.1.6 GDC 74B ..................................................................................................... 7-20 7.1.7 GEA 71 ........................................................................................................ 7-23 7.1.8 GTX 33/33D ................................................................................................ 7-24 7.1.9 GDL 69A ..................................................................................................... 7-25 7.1.10 GSA 80/81 ................................................................................................... 7-26 7.1.11 GCU 475 ...................................................................................................... 7-30 ______________________________________________________________ Page vi G1000 System Maintenance Manual Rev. A 190-00903-00 7.1.12 GMC 710 ..................................................................................................... 7-31 7.1.13 GWX 68 ....................................................................................................... 7-32 SECTION 8—RETURN TO SERVICE TESTING 8.1 WAAS GPS Test............................................................................................ 8-2 8.2 GIA Test......................................................................................................... 8-3 8.3 Display Test ................................................................................................... 8-4 8.4 AHRS/Air Data Backup Path Test................................................................. 8-5 8.5 Flight Test ...................................................................................................... 8-5 8.6 VHF COM Tests ............................................................................................ 8-5 8.7 VOR/ILS Tests............................................................................................... 8-6 8.8 Maintenance Records..................................................................................... 8-6 SECTION 9—PERIODIC MAINTENANCE 9.1 Service Timer................................................................................................. 9-1 9.2 Maintenance Intervals.................................................................................... 9-1 9.3 Recommended Tools ..................................................................................... 9-2 9.4 General Maintenance Procedures .................................................................. 9-2 9.5 GFC 700 Visual Inspection Procedure .......................................................... 9-3 9.6 GSA 809(x) Greasing Procedure ................................................................... 9-3 9.7 GSM Slip Clutch Checking and Adjustment Procedure................................ 9-4 9.8 GSM 85(A) Servo Gearbox Semi-Automated Slip Clutch Test.................... 9-4 9.8.1 Abnormal Test Message Prompts .................................................................. 9-9 9.9 GDC 74B RVSM Altitude Inspection ......................................................... 9-11 9.10 Category B Long Term Power Interrupt Inspection .................................... 9-11 SECTION 10—SYSTEM RECONFIGURATION 10.1 MFD & PFD Upload Procedure .................................................................. 10-1 10.2 Initial System Software Upload ................................................................... 10-2 10.3 Software Load Confirmation ....................................................................... 10-2 10.4 Final Configuration Items ............................................................................ 10-4 10.4.1 Aircraft Registration Number Entry ............................................................ 10-4 10.5 Software/Configuration Troubleshooting .................................................... 10-6 10.6 System Communication Hierarchy .............................................................. 10-7 10.7 Aviation Database........................................................................................ 10-8 10.8 TAWS Configuration................................................................................... 10-9 10.9 ChartView Configuration .......................................................................... 10-10 ______________________________________________________________ G1000 System Maintenance Manual Page vii 190-00903-00 Rev. A 10.10 SD Card Use .............................................................................................. 10-12 10.10.1 Jeppesen Database ..................................................................................... 10-12 10.10.2 Miscellaneous Databases ........................................................................... 10-12 10.11 Updating Garmin Databases ...................................................................... 10-13 APPENDIX A—CONNECTOR PIN ASSIGNMENTS A.1 P601 (COM).................................................................................................. A-1 A.2 P602 (VOR/ILS) ........................................................................................... A-3 A.3 P603 (MAIN/SERIAL)................................................................................. A-5 A.4 P604 (MAIN DISCRETE)............................................................................ A-7 A.5 P605 (I/O #1) ................................................................................................ A-8 A.6 P606 (I/O #2) .............................................................................................. A-10 A.7 P10001 (GDU 1xxx) ................................................................................... A-12 A.8 P771 (GRS 77)............................................................................................ A-14 A.9 P441 (GNU 44) ........................................................................................... A-15 A.10 P741 (GDC 74A) ........................................................................................ A-16 A.11 P701 (GEA 71) ........................................................................................... A-18 A.12 P702 ............................................................................................................ A-20 A.13 GMA 1347D (P3471) ................................................................................. A-22 A.14 P3472 .......................................................................................................... A-24 A.15 P3301 (GTX 33) ......................................................................................... A-26 A.16 GDL 69/69A (P691) ................................................................................... A-28 A.17 GSA 81 (P801)............................................................................................ A-30 A.18 P411 (GSD 41)............................................................................................ A-31 A.19 P412 (GSD 41)............................................................................................ A-33 ______________________________________________________________ Page viii G1000 System Maintenance Manual Rev. A 190-00903-00 FIGURES 2-1 AHRS Block Diagram ................................................................................... 2-1 2-2 Top-Level Interconnect Block Diagram ........................................................ 2-2 2-3 Flight Instrumentation Data Paths ................................................................. 2-3 2-4 G1000 Navigation/Communication Data Paths............................................. 2-4 2-5 GFC 700 Autopilot Interconnect Block Diagram.......................................... 2-5 2-6 Three Display Installation Example .............................................................. 2-6 3-1 GDU 1500 Display ........................................................................................ 3-1 3-2 GDU 1040A Display...................................................................................... 3-2 3-3 GDU 1240A Display...................................................................................... 3-2 3-4 GMA 1347D Audio Panel ............................................................................. 3-3 3-5 GIA 63W Integrated Avionics Unit............................................................... 3-3 3-6 GRS 77 AHRS Unit ....................................................................................... 3-4 3-7 GMU 44 Magnetometer................................................................................. 3-4 3-8 GDC 74B Air Data Computer........................................................................ 3-5 3-9 GEA 71 Engine/Airframe Unit ...................................................................... 3-5 3-10 GDL 69/69A Satellite Data Link Receiver.................................................... 3-6 3-11 GDL 90 Universal Access Transceiver/GPS Receiver.................................. 3-6 3-12 GSA 80 Servo ................................................................................................ 3-7 3-13 GWX 68 Weather Radar................................................................................ 3-7 3-14 GTP 59 OAT Probe ....................................................................................... 3-8 3-15 GTX 33/33D Transponder ............................................................................. 3-8 3-16 GCU 475 MFD Control Unit ......................................................................... 3-9 3-17 GMA 715 AFCS Control Unit....................................................................... 3-9 3-18 GSD 41 Data Concentrator .......................................................................... 3-10 3-19 GRT 10 Remote Controller/GRC 10 Wireless Transceiver ........................ 3-10 3-20 GCU 477 Remote Controller ....................................................................... 3-11 3-21 GDL 59 System Level Block Diagram........................................................ 3-12 4-1 System Status Page (Configuration Mode).................................................... 4-1 4-2 Softkeys.......................................................................................................... 4-2 4-3 GDU 1xxx Bezel SD Card Slots.................................................................... 4-3 4-4 GRS/GDC Configuration File Storage (3 Display) ....................................... 4-6 4-5 System Configuration File Storage (3 Display)............................................. 4-7 4-6 SET and ACTIVE Softkeys and Columns..................................................... 4-8 4-7 Configuration Status Prompts ........................................................................ 4-9 4-8 Data Transmission Indicators ........................................................................ 4-9 ______________________________________________________________ G1000 System Maintenance Manual Page ix 190-00903-00 Rev. A 4-9 Loss Of Communication ................................................................................ 4-9 5-1 LRU Failure Annunciations........................................................................... 5-1 5-2 System Status Page (AUX Group)................................................................. 5-8 5-3 Main RS-232/ARINC 429 Configuration Page ............................................. 5-9 5-4 GIA RS-232/ARINC 429 Configuration Page ............................................ 5-18 5-5 GIA RS-485 Configuration Page ................................................................. 5-30 5-6 Advisory Messages ...................................................................................... 5-36 5-7 GDL 69 Configuration Page ........................................................................ 5-75 5-8 GMA Configuration Page ............................................................................ 5-78 5-9 AHRS/Air Data Input Configuration Page .................................................. 5-81 5-10 Engine Data Page......................................................................................... 5-82 5-11 GEA Status Page.......................................................................................... 5-84 5-12 GEA Configuration Page ............................................................................. 5-85 5-13 GDU Status Page ......................................................................................... 5-86 5-14 GDU Test Page ............................................................................................ 5-89 5-15 Diagnostics Page.......................................................................................... 5-92 5-16 Serial/Ethernet I/O Page .............................................................................. 5-93 5-17 Alert Configuration Page ............................................................................. 5-94 5-18 Airframe Configuration Page....................................................................... 5-94 5-19 RS-232/ARINC 429 Configuration Page..................................................... 5-95 5-20 CAN/RS-485 Configuration Page................................................................ 5-96 5-21 GIA I/O Configuration Page........................................................................ 5-97 5-22 COM Setup Page.......................................................................................... 5-98 5-23 GIA Status Page........................................................................................... 5-99 5-24 GFC Configuration Page............................................................................ 5-101 5-25 GFC Status Page ........................................................................................ 5-102 5-26 GFC 700 Annunciation Field..................................................................... 5-103 5-27 GDC 74B PC Interface Cable .................................................................... 5-114 5-28 GDC 74B Field Calibration Utility, Main Page ........................................ 5-115 5-29 Serial Port Pull-Down List......................................................................... 5-115 5-30 '0 Feet' Calibration Screen ......................................................................... 5-116 5-31 'Calibration Failed' Screen ......................................................................... 5-116 5-32 'Program Calibration to Unit' Screen ......................................................... 5-117 5-33 'Field Calibration Result' Screen................................................................ 5-117 5-34 Calibration Files Screen............................................................................. 5-118 5-35 Post-Calibration Email Example ............................................................... 5-119 5-36 The 'About' Screen ..................................................................................... 5-119 5-37 AUX-System Status Page .......................................................................... 5-120 5-38 HSCM Offset Tool User Interface Display ............................................... 5-121 ______________________________________________________________ Page x G1000 System Maintenance Manual Rev. A 190-00903-00 5-39 Configuration Upload Page ....................................................................... 5-122 5-40 HSCM Offset Tool User Interface Display ............................................... 5-123 5-41 Post-Calibration Email Example ............................................................... 5-124 5-42 GIA 63W Backplate Connectors ............................................................... 5-125 5-43 GEA 71 Backplate Connectors .................................................................. 5-126 5-44 GSD 41 Keyplate Information ................................................................... 5-126 5-45 GMA 1347D Backplate Connectors .......................................................... 5-126 5-46 GTX 33/33D Backplate Connectors .......................................................... 5-127 5-47 GDU 1xxx Backplate Connector (P10001) ............................................... 5-127 5-48 GRS 77 Backplate Connector (P771) ........................................................ 5-127 5-49 GDC 74B Backplate Connector (P741)..................................................... 5-127 5-50 GDL 69A Backplate Connector (P691)..................................................... 5-128 5-51 GCU 475 Backplate Connector (P4751) ................................................... 5-128 5-52 GMC 710 Backplate Connector (P7101)................................................... 5-128 5-53 GWX 68 Backplate Connector (P400) ...................................................... 5-128 5-54 GSD 41 Backplate Connector (P411) ........................................................ 5-128 5-55 GSD 41 Backplate Connector (P412) ........................................................ 5-129 6-1 System Status Page (Configuration Mode).................................................... 6-1 6-2 Configuration Module.................................................................................... 6-9 6-3 GEA 71 Backplate Thermocouple ............................................................... 6-10 7-1 AUX-GPS Status Page (example) ................................................................. 7-5 7-2 Marker Beacon Symbology ........................................................................... 7-9 7-3 Pitch/Roll Offset .......................................................................................... 7-12 7-4 Magnetometer Calibration ........................................................................... 7-13 7-5 Engine Run-Up ............................................................................................ 7-16 7-6 Magnetometer Interference.......................................................................... 7-18 8-1 System Status Page (Configuration Mode).................................................... 8-1 9-1 Total Time in Service .................................................................................... 9-1 9-2 GFC Status Page ............................................................................................ 9-5 9-3 System Upload Page .................................................................................... 9-12 9-4 Upload 'Complete' Window ......................................................................... 9-12 9-5 BKUP CAPS Checkbox on GDU 1xxx Test Page ...................................... 9-13 10-1 System Status Page ...................................................................................... 10-2 10-2 Transponder Configuration Page ................................................................. 10-4 ______________________________________________________________ G1000 System Maintenance Manual Page xi 190-00903-00 Rev. A TABLES 4-1 Configuration Page Groups ........................................................................... 4-4 5-1 LRU Failure Annunciations and Recommended Actions.............................. 5-2 5-2 AFCS Annunciations ................................................................................. 5-104 7-1 GRS 77/GMU 44 Calibration ...................................................................... 7-12 7-2 Magnetometer Interference Test Sequence.................................................. 7-19 9-1 Test Results.................................................................................................... 9-6 9-2 GDC 74B RVSM Altitude Inspection Criteria ............................................ 9-11 ______________________________________________________________ Page xii G1000 System Maintenance Manual Rev. A 190-00903-00 Blank Page ____________________________________________________________________ G1000 System Maintenance Manual Page 1-1 190-00903-00 Rev. A SECTION 1 INTRODUCTION This manual provides maintenance information for the Garmin G1000 Integrated Flight Deck installed and configured for VLJ and LJ (very light and light jet) aircraft. Troubleshooting, LRU replacement, uploading and configuring software, and return to service testing procedures are included. 1.1 SCOPE This manual is general in scope and is intended to be used only as a guideline. Consult OEM maintenance documentation for the most current and exact maintenance information for a specific aircraft. This manual presumes familiarity with the basic operating procedures covered in the G1000 Pilot's Guide and Cockpit Reference Guide (CRG). 1.2 MANUAL ORGANIZATION The following is a brief description of each section in the manual. Section 1―Introduction This section discusses the scope of the manual content and describes manual organization. Section 2―System Overview This section gives give an overview of the G1000 System. Section 3―LRU Descriptions This section describes each G1000 LRU. Section 4―Configuration Mode This section explains the configuration mode and the role it plays in troubleshooting. It also contains limited user interface information. Section 5―Troubleshooting This section contains troubleshooting procedures which can help isolate a defective LRU. Section 6―Replacement Procedures This section lists procedures needed to replace a defective LRU. Section 7―LRU Software Installation and Testing This section explains how to install, configure, and test software for a replacement LRU. Section 8―Return To Service Testing This section describes return to service tests. Section 9―Periodic Maintenance This section contains periodic maintenance procedures. ____________________________________________________________________ Page 1-2 G1000 System Maintenance Manual Rev.A 190-00903-00 Section 10―System Reconfiguration This section explains how to completely reconfigure the system should it become necessary. Appendix A―Connector Pin Assignments This appendix illustrates and lists the names of G1000 connector pins. ____________________________________________________________________ G1000 System Maintenance Manual Page 2-1 190-00903-00 Rev. A SECTION 2 SYSTEM OVERVIEW This section describes the major subsystems of the G1000. Because G1000 configurations vary depending on specific aircraft, this section is only a guideline. Refer to the OEM maintenance documentation for aircraft specific system information. 2.1 G1000 FLIGHT INSTRUMENTATION The GRS 77 AHRS, GDC 74B Air Data Computer, and GMU 44 Magnetometer supply the G1000 with flight instrumentation data. The data consists of aircraft attitude, heading, altitude, airspeed, vertical speed, and outside air temperature information, all displayed on the PFD (the same data is displayed on the MFD in reversionary mode). Data outputs from the GRS 77 and GDC 74B are sent directly to the PFD via ARINC 429. Additional communications paths connect the GRS and GDC 74B to GIA 63W units providing quadruple redundant capability. The GRS 77 receives GPS data from both GIAs, airspeed data from the GDC 74B, and magnetic heading from the GMU. Using these three external sources, combined with internal sensor data, the GRS accurately calculates aircraft attitude and heading (Figure 2-1). In addition to using internal sensors, the GRS 77 uses GPS information, magnetic field data and air data to assist in attitude/heading calculations. In normal mode, the GRS 77 relies upon GPS and magnetic field measurements. If either of these external measurements is unavailable or invalid, the GRS 77 uses air data information for attitude determination. Four GRS 77 modes of operation are available and depend upon the combination of available sensor inputs. Loss of air data, GPS, or magnetometer sensor inputs is communicated to the pilot by message advisory alerts. Figure 2-1. GRS 77 Block Diagram ____________________________________________________________________ Page 2-2 G1000 System Maintenance Manual Rev. A 190-00903-00 Figure 2-2 shows a top-level G1000 interconnect block diagram. NOTE The block diagrams shown in this section are not aircraft specific. Refer to the OEM maintenance documentation for aircraft specific diagrams. Figure 2-2. G1000 Top-Level Interconnect Block Diagram ____________________________________________________________________ G1000 System Maintenance Manual Page 2-3 190-00903-00 Rev. A Figure 2-3 shows a G1000 flight instruments block diagram. Figure 2-3. G1000 Flight Instrumentation Data Paths ____________________________________________________________________ Page 2-4 G1000 System Maintenance Manual Rev. A 190-00903-00 2.2 NAVIGATION AND COMMUNICATION SYSTEMS The GIA 63W LRUs contain the VHF COM, VHF NAV, and WAAS GPS receivers. COM and NAV digital audio is sent to the GMA 1347D Audio Panel. GPS data is sent to the GRS 77 and both displays for processing. The GTX 33 and GTX 33D Mode S Transponders communicate with their respective GIA. Transponder data is sent from the GIA to the PFD. The GMA 1347D Audio Panel controls audio selections and the reversionary mode. Figure 2-4. G1000 Navigation/Communication Data Paths ____________________________________________________________________ G1000 System Maintenance Manual Page 2-5 190-00903-00 Rev. A 2.3 GFC 700 INTERCONNECT Figure 2-5 shows a GFC 700 Autopilot interconnect block diagram. Figure 2-5. GFC 700 Autopilot Interconnect Block Diagram ____________________________________________________________________ Page 2-6 G1000 System Maintenance Manual Rev. A 190-00903-00 2.4 GDU 1xxx OVERVIEW The GDU 1xxx provides display and control interface for the G1000 and functions interchangeably as a PFD or an MFD. Typical VLJ/LJ installations involve 3 GDUs and optional remote control devices. In a 3 GDU configuration, two PFDs (PFD1 and PFD2) and one MFD comprise the primary control and display interface. Figure 2-6 Three Display Installation (Example) ____________________________________________________________________ G1000 System Maintenance Manual Page 2-7 190-00903-00 Rev. A 2.4.1 GDU Communication HSDB The GDU communicates directly with other GDUs and other LRUs via a High Speed Data Bus (HSDB). These other LRUs include integrated avionics units, serial data concentrators, data link receivers, and weather radars. In the G1000 System, the integrated avionics unit is the GIA 63/63W. The GIA 63/63W communicates with additional LRUs and discretes, concentrating serial, analog, and discrete input and output data. This data provides a means for the GDU 1xxx to communicate indirectly with additional LRUs. These indirect LRUs include audio panels, engine acquisition units, and FADECs. ARINC 429 The GDU communicates directly with other LRUs via ARINC 429. These LRUs include Attitude and Heading Reference Systems (AHRS) and Air Data Computers (ADC). RS-232 The GDU communicates directly with remote control units and provides debugging information via RS-232. Dimming The GDU provides dimming of the displays and other integrated control/display LRUs (such as the audio panels and remote controllers) via its monitoring of an aircraft dimming bus, through a light detection sensor (photocell), or manually. Uploading and Configuring Software The GDU’s SD Card slots are used to upload and configure software for the G1000. A software loader card contains software files and configuration files. An SD card can also be used to download maintenance data. GDU Software GDU software is uploaded into each GDU individually from a software loader card. GDUs are configured in a similar manner as other LRUs. LRUs are uploaded with software after the GDU software is loaded. Databases Certain databases are stored internally in each GDU. These databases include the basemap database and the navigation database. Other databases are stored on a SD Card that remains resident in the GDU. These databases include the terrain, obstacle, SafeTaxi, ChartView, FliteCharts, and airport terrain databases. Each GDU retains its own copy of each database. Some product features such as ChartView and TAWS require one-time activation via a uniquely programmed SD card. ____________________________________________________________________ Page 2-8 G1000 System Maintenance Manual Rev. A 190-00903-00 Blank Page ____________________________________________________________________ G1000 System Maintenance Manual Page 3-1 190-00903-00 Rev. A SECTION 3 EQUIPMENT DESCRIPTION This section describes the G1000 Line Replaceable Units (LRUs) that could be configured VLJ/LJ aircraft. Not all of the LRUs described in this section are necessarily standard equipment, some are optional depending on the specific model of aircraft. Refer to OEM maintenance documentation for the exact quantity of LRUs used in a specific installation. 3.1 DISPLAYS (MFD/PFD) 3.1.1 GDU 1500 Figure 3-1. GDU 1500 Display The GDU 1500 consists of a 15-inch LCD display 1024 x 768 resolution. The GDU 1500 is configured as a Multi Function Display. The MFD shows navigation information and engine/airframe instrumentation. The GDU 1500 communicates with both GDU 1040’s and the GDL 69A through a High-Speed Data Bus (HSDB) Ethernet connection. The GDU 1500 also communicates with the GCU 475 via RS-232 digital interface. ____________________________________________________________________ Page 3-2 G1000 System Maintenance Manual Rev. A 190-00903-00 3.1.2 GDU 1040A Figure 3-2. GDU 1040A Display In certain VLJ configurations, each 1040A is configured as a PFD that features a 10.4-inch LCD with 1024 x 768 resolution. The 1040A installed on the left/pilot side is designated as PFD1, and the one installed on the right/copilot side is designated as PFD2. These units communicate with each other, the MFD (GDU 1500), and with the on-side GIA 63W Integrated Avionics Unit through a High-Speed Data Bus (HSDB) connection. 3.1.3 GDU 1240A In certain VLJ configurations three GDU 1240As are utilized. Each unit is configured as one of two PFDs or one MFD. The GDU 1240A features a 12-inch LCD with 1024 x 768 resolution. The unit installed on the left/pilot side is designated as PFD1, and the one installed on the right/copilot side is designated as PFD2. The unit installed in the center is designated the MFD. These units communicate with each other and with the on-side GIA 63W Integrated Avionics Unit through a High-Speed Data Bus (HSDB) connection. These units communicate with each other and with the on-side GIA 63W Integrated Avionics Unit through a High-Speed Data Bus (HSDB) connection. Figure 3-3. GDU 1240A Display ____________________________________________________________________ G1000 System Maintenance Manual Page 3-3 190-00903-00 Rev. A 3.2 GMA 1347/1347D AUDIO PANEL Figure 3-4. GMA 1347D Audio Panel The GMA 1347D Audio Panel integrates NAV/COM digital audio, intercom system, and marker beacon controls. Manual display reversion is also controlled by the GMA 1347D. The GMA 1347D is normally installed between the MFD and PFD. The GMA 1347D can also be installed in dual-audio panel applications (usually paired with a dual-PFD setup). The GMA 1347D communicates with both GIA LRUs using RS-232 digital interface. Software and configuration settings are received through a RS-232 digital interface with the GIA. Two Audio Panels are usually configured for operation. 3.3 GIA 63/63W INTEGRATED AVIONICS UNIT Figure 3-5. GIA 63W Integrated Avionics Unit ____________________________________________________________________ Page 3-4 G1000 System Maintenance Manual Rev. A 190-00903-00 The GIA 63W is the central ‘Integrated Avionics Unit’ (IAU) in the G1000 system. It functions as the main communication hub, linking all LRUs (except GIA #2) with the on-side PFD. Each GIA 63W contains a GPS WAAS receiver, VHF COM/NAV/GS receivers, a flight director (FD) and system integration microprocessors. Each GIA 63W is paired with a CDU via HSDB connection. The GIA 63Ws are not paired together and do not communicate with each other directly. 3.4 GRS 77 ATTITUDE, HEADING, AND REFERENCE UNIT (AHRS) Figure 3-6. GRS 77 AHRS Unit The GRS 77 provides aircraft attitude and heading information via ARINC 429 to both the on- side GDU and the on-side GIA 63W. The GRS 77 contains advanced sensors (including accelerometers and rate sensors) and interfaces with the on-side GMU 44 to obtain magnetic field information, with the GDC 74B to obtain air data, and with both GIA 63Ws to obtain GPS information. 3.5 GMU 44 MAGNETOMETER Figure 3-7. GMU 44 Magnetometer The GMU 44 measures local magnetic field. Data is sent to the GRS 77 for processing to determine aircraft magnetic heading. This LRU receives power directly from the GRS 77 and communicates with the GRS 77 using an RS-485 digital interface. ____________________________________________________________________ G1000 System Maintenance Manual Page 3-5 190-00903-00 Rev. A 3.6 GDC 74B AIR DATA COMPUTER Figure 3-8. GDC 74B Air Data Computer The GDC 74B processes data from the pitot/static system as well as the OAT probe. This LRU provides pressure altitude, airspeed, vertical speed and OAT information to the G1000 system, and communicates with the on-side GIA 63W, on-side GDU and on-side GRS 77 using an ARINC 429 digital interface. The GDC 74B is designed to operate in Reduced Vertical Separation Minimum (RVSM) airspace. 3.7 GEA 71 ENGINE/AIRFRAME UNIT Figure 3-9. GEA 71 Engine/Airframe Unit The GEA 71receives and processes signals from the engine and airframe sensors. This LRU communicates with both GIA 63Ws using an RS-485 digital interface. ____________________________________________________________________ Page 3-6 G1000 System Maintenance Manual Rev. A 190-00903-00 3.8 GDL 69A SATELLITE DATA LINK RECEIVER Figure 3-10. GDL 69/69A Satellite Data Link Receiver The GDL 69A is a satellite radio receiver that provides real-time weather information to the G1000 MFD (and, indirectly, to the inset map of the PFD) as well as digital audio entertainment. The GDL 69A communicates with the MFD via HSDB connection. A subscription to the XM Satellite Radio service is required to enable the GDL 69A capability. 3.9 GDL 90 GPS WAAS RECEIVER/UAT Figure 3-11. GDL 90 Universal Access Transceiver/GPS WAAS Receiver The GDL 90 LRU is a remote-mounted unit containing a GPS/WAAS Receiver and a Universal Access Transceiver (UAT). The GDL 90 transmits data via the UAT data link and receives data from other UAT-equipped aircraft as well as FIS-B weather. The received data can be output to an appropriate display. ____________________________________________________________________ G1000 System Maintenance Manual Page 3-7 190-00903-00 Rev. A 3.10 GSA 80/ 81 AFCS SERVOS/GSM 85(A) SERVO GEARBOX Figure 3-12. GSA 80 Servo The GSA 80/81 servos are used for the automatic control of pitch, roll, and yaw. These units interface with each GIA 63W. The GSM 85(A) servo gearbox is responsible for transferring the output torque of the GSA 80 servo actuator to the mechanical flight-control surface linkage. 3.11 GWX 68 WEATHER RADAR Figure 3-13. GWX 68 Weather Radar The GWX 68 provides airborne weather and ground mapped radar data to the MFD through the GDL 69A and GSD via an HSDB connection. ____________________________________________________________________ Page 3-8 G1000 System Maintenance Manual Rev. A 190-00903-00 3.12 GTP 59 OAT PROBE Figure 3-14. GTP 59 OAT Probe The GTP 59 OAT Probe provides outside air temperature measurement which is used by the GDC 74A. Communication interface to the G1000 is through the GDC 74A/B. 3.13 GTX 33/33D MODE S TRANSPONDER Figure 3-15. GTX 33/33D Transponder The GTX 33 and GTX 33D are solid-state transponders that provide Modes A, C and S capability. The GTX 33D includes Mode S with diversity. Both transponders can be controlled from either PFD, and only one transponder can be active at a time. Each transponder communicates with the on-side GIA 63W through an RS-232 digital interface. ____________________________________________________________________ G1000 System Maintenance Manual Page 3-9 190-00903-00 Rev. A 3.14 GCU 475 MFD CONTROL UNIT Figure 3-16. GCU 475 MFD Control Unit In certain VLJ aircraft configurations the GCU 475 provides the Flight Management System (FMS) controls for the MFD through an RS-232 digital interface. 3.15 GMC 715 AFCS CONTROL UNIT Figure 3-17. GMC 715 AFCS Control Unit In certain VLJ aircraft configurations the GMC 715 provides the controls for the GFC 700 AFCS through an RS-232 digital interface allowing communication with both PFDs. ____________________________________________________________________ Page 3-10 G1000 System Maintenance Manual Rev. A 190-00903-00 3.16 GSD 41 DATA CONCENTRATOR Figure 3-18. GSD 41 Data Concentrator The GSD 41 is a data concentrator used to expand the input and output capabilities of the G1000 system. Communication is through the High Speed Data Bus. 3.17 GRC10/GRT10 Figure 3-19. GRT 10 Remote Controller and GRC 10 Wireless Transceiver 3.17.1 GRC 10 XM Remote Control The GRC 10 remote control allows passenger interface with the GDL XM radio without inputs from the pilot or co-pilot. It’s use does not prevent XM radio channel selection via the MFD though it’s use disables the volume and mute selections on the MFD. ____________________________________________________________________ G1000 System Maintenance Manual Page 3-11 190-00903-00 Rev. A 3.17.2 GRT 10 XM Wireless Transceiver The GRT 10 wireless transceiver operating at 2.4GHZ allows the user to interface wirelessly with the GDL XM radio by receiving and transmitting information to the GRC 10 remote control via RF. 3.18 GCU 477 Figure 3-20. GCU 477 Remote Controller The GCU 477 is a panel-mounted user control interface that enables the aircraft’s flight crew to control the Garmin G1000 Flight Management System (FMS). The GCU 477 has 40 alpha- numeric keys, 15 special function keys, one dual rotary encoder, and one joystick encoder. The GCU 477 sends data over an RS-232 serial connection to the G1000 that informs the CDU (Control Display Unit) when the manual interface controls are operated by the user. ____________________________________________________________________ Page 3-12 G1000 System Maintenance Manual Rev. A 190-00903-00 3.19 GSR56/GDL59 Figure 3-21. GDL 59 System Level Block Diagram The GDL 59 serves as a short range, high speed data link between the aircraft and ground based networks. The GDL 59 is located in the aircraft and will provide communications service through an 802.11 RF link when on the ground. The GDL 59 can also provide a flight data logger function. When paired with the GSR 56 Iridium data link, the GDL 59 can provide in- flight voice calling and short burst data communications to ground based networks. The GDL 59 has various connection options to aircraft audio panels, a Plain Old Telephone Service (POTS) handset, aircraft avionics through High Speed Data Bus (HSDB), and zero, one or two GSR 56 Iridium satellite modules, as shown in Figure 3-21. The GDL 59 provides an effective means for aircraft avionics, pilots, and potential passengers to transfer voice and data between the aircraft and ground networks. ____________________________________________________________________ G1000 System Maintenance Manual Page 4-1 190-00903-00 Rev. A SECTION 4 CONFIGURATION MODE This section describes the configuration mode of operation. This section presumes basic familiarity with the operation of the G1000. 4.1 INTRODUCTION Configuring, calibrating, and troubleshooting the G1000 is performed in the configuration mode. To enter configuration mode: 1. Press and hold the ENT key on the PFD while applying power. Release the ENT key after ‘INITIALIZING SYSTEM’ is displayed in the upper left corner of the PFD. 2. Repeat step 1 for PFD 2 (if installed). The System Status Page (Figure 4-1) is displayed on the MFD and the PFD. 3. Press the 12th softkey on GDU 1xxx that does not have an ENT key to enter Config Mode. Figure 4-1. System Status Page (Configuration Mode) ____________________________________________________________________ Page 4-2 G1000 System Maintenance Manual Rev. A 190-00903-00 4.2 CONFIGURATION PAGE GROUPS AND PAGES NOTE Certain "protected" configuration pages are critical to aircraft operation and safety. The technician is unable to modify or change settings on theses pages. They are viewable to aid in troubleshooting. Configuration pages are grouped according to function. The active page title is displayed at the top of the screen in the center. In the bottom right corner of the screen, the current configuration page group, number of pages available in the group, and placement of the current page within the group are indicated by icons. The page groups and pages listed in this section are nonspecific. Page groups and pages can change depending on the configuration in a specific aircraft (Table 4- 1). 4.2.1 User Interface Once the G1000 is placed in configuration mode, the large and small FMS knob is used to cycle through the different configuration pages, to change page groups, and to change pages in a group. The FMS knob is also used to perform the following: • To activate the cursor press the small FMS knob. • To cycle the cursor through different data fields rotate the large FMS knob. • To change the contents of a highlighted data field rotate the small FMS knob. This action displays an options menu for the particular field, or in some cases, allows the user to enter data for the field. • To confirm a selection press the ENT key. To cancel a selection, press the small FMS knob. Pressing the small FMS knob again turns the cursor off. The CLR key can also be used to cancel a selection or turn the cursor off. NOTE The MFD/PFD, Audio Panel, MFD Control Unit and AFCS controls are described in the Pilot's Guide. 4.2.2 Softkeys Some configuration pages have commands or selections that are activated by the display softkeys (Figure 4-2). If a softkey is associated with a command, that command will be displayed directly above the key. A grayed-out softkey shows a command that is unavailable. A softkey that is highlighted shows the current active selection. Figure 4-2. G1000 Softkeys ____________________________________________________________________ G1000 System Maintenance Manual Page 4-3 190-00903-00 Rev. A 4.3 SECURE DIGITAL (SD) CARDS Software files are uploaded into the G1000 using a Secure Digital (SD) Data Card. The card contains all necessary files to load software and configuration settings to all G1000 LRUs. Basically, all software and configuration parameters are pre-determined by Garmin and/or the OEM. During removal and replacement of LRUs, software and configuration files may need to be reloaded (refer to Section 7). It is very important that the technician use the correct card part number because each card part number defines all files found on the card for a specific G1000 installation except for certain configuration settings such as the aircraft registration number (N#) which must be entered manually. Use care when using the card during maintenance. The G1000 is designed to immediately initialize the card upon power-up. On-screen prompts must be given careful attention in order to avoid potential loss of data. Always read and thoroughly understand all related information before attempting to use the card. NOTE Ensure that the G1000 system is powered off before inserting the SD card. The GDU data card slots use the Secure Digital (SD) cards and are located on the top right portion of the display bezels (Figure 4-3). Each display bezel is equipped with two SD card slots. SD cards are used for aviation database and system software updates as well as terrain database storage. To install an SD card: Insert the SD card in the SD card slot, pushing the card in until the spring latch engages. The front of the card should remain flush with the face of the display bezel. To remove an SD card: Gently press on the SD card to release the spring latch and eject the card. Figure 4-3. GDU Bezel SD Card Slots ____________________________________________________________________ Page 4-4 G1000 System Maintenance Manual Rev. A 190-00903-00 Table 4-1. Configuration Page Groups (example) SYSTEM System Status Date/Time Setup Main Lighting Audio Alert Configuration System Upload File Manager Diagnostics Terminal Maintenance Log OEM Diagnostics Terminal System Configuration System Data Paths System Setup Manifest Configuration GDU RS-232/ARINC 429 Config GDU Status GDU Test Diagnostics Serial / Ethernet I/O Alert Configuration Airframe Configuration GDC GDC Configuration GIA RS-232/ARINC 429 Config CAN/RS-485 Configuration GIA I/O Configuration COM Setup GIA Status CAN Configuration GSD GSD ARINC Configuration GSD RS-485 Configuration GSD I/O Configuration GSD Status GDL GDL69 Configuration GTX RS-232/ARINC 429 Config Transponder Configuration GRS AHRS/AIR Data Input GRS/GMU Calibration OTHER STORMSCOPE S-TEC ® GFC GFC Configuration GFC Status GMA GMA Configuration GWX GWX Configuration RMT Remote Status CAL Fuel Tank Calibration Flaps & Trim Calibration HSCM Calibration Airframe Calibration GEA Engine Data GEA Status GEA Configuration Fuel Calibration ____________________________________________________________________ G1000 System Maintenance Manual Page 4-5 190-00903-00 Rev. A 4.4 CONFIGURATION FILES NOTE The GRS 77 AHRS and GMU 44 Magnetometer LRUs do not use configuration files. However, these LRUs do require several calibrations during installation and/or maintenance. The G1000 Loader Card contains the following configuration files (this list is nonspecific and can differ depending on the requirements of a particular installation): • AIRFRAME―contains data such as airspeed parameters, engine/airframe sensor limitations, fuel tank parameters and alerting system settings that tailor a G1000 PFD or MFD to a specific airframe. • SYSTEM―configures the G1000 Ethernet to communicate with a PFD, MFD, and GIAs and other LRUs that support HSDB. • MANIFEST―uploads a manifest of all software part numbers and versions associated with an approved system configuration. • MFD1―configures the MFD serial/discrete communications and alerting system settings. • PFD1/PFD2―configures PFD serial/discrete communication and alert system settings. • GIA1/GIA2―these files configure GIA1/GIA2 serial/discrete communication settings. • GMA1/GMA2―configures GMA audio and serial communication settings. • GTX1/GTX2―configures GTX transponder and serial communications settings. • GEA1/GEA2―configures GEA engine/airframe parameters. • GDC1/GDC2―configures GDC air data values for the aircraft. • GDL69―configures GDL 69/69A data link and communications settings. • GMC―configures the GMC 710. • GCU―configures the GCU 475. • CALIBRATION―configures the fuel and trim calibration data. • GWX―configures the GWX 68 weather radar settings. • AUDIO―configures all of the audio messages for the G1000 system including tones and voice messages. 4.4.1 Configuration File Retention The G1000 stores all configuration settings in various locations allowing the configuration of the system to be retained in the aircraft during maintenance. Since the G1000 is installed in a variety of aircraft, it is imperative that aircraft specific data be retained at the aircraft level. Figures 4-4 and 4-5 illustrate a block diagram of how a typical G1000 stores configuration settings. The GRS 77 and GDC 74B configuration modules function differently than the rest of the system. The GDC 74B’s configuration file is loaded directly to GDC internal memory, a copy is also stored in the GDC configuration module. The GRS 77 configuration module stores calibration data recorded during installation calibration procedures and does not store configuration settings. ____________________________________________________________________ Page 4-6 G1000 System Maintenance Manual Rev. A 190-00903-00 Figure 4-4. GRS/GDC Configuration File Storage (3 Display) ____________________________________________________________________ G1000 System Maintenance Manual Page 4-7 190-00903-00 Rev. A Figure 4-5. System Configuration File Storage (3 Display) ____________________________________________________________________ Page 4-8 G1000 System Maintenance Manual Rev. A 190-00903-00 4.5 'SET' AND 'ACTIVE' COMMANDS The SET and ACTIVE commands on various configuration pages are used for setting input/output conditions (Figure 4-6). SET>ACTV and ACTV> Softkeys ACTIVE Column SET Column Figure 4-6. SET and ACTIVE Softkeys and Columns 4.5.1 SET and ACTIVE Softkeys When troubleshooting the system the technician can look for inequalities (configuration mismatch) between SET and ACTIVE columns. Certain problems can be resolved by pressing the SET>ACTV softkey which reloads settings to the specific LRU from the PFD (this can also be accomplished by reloading the configuration files for the LRU, using the G1000 SW Loader Card. Use the ACTV>SET softkey with care. If an improperly configured unit is installed, this softkey causes the wrong configuration to replace the correct one. SET—refers to a setting or group of settings that reside in the PFD’s internal memory and/or master configuration module. ACTIVE—refers to a current setting stored and used in a LRU. LRUs store the ‘active’ settings within internal memory. Data can be manually copied from one column to the other by using the following two softkeys: SET>ACTV (Set to Active)—allows the installer to send the information in the SET column (data stored in the master configuration module) to the ACTV column (data used by the LRU). ____________________________________________________________________ G1000 System Maintenance Manual Page 4-9 190-00903-00 Rev. A ACTV>SET (Active to Set)—causes the current settings of the LRU to be copied to the master configuration module as SET items. 4.6 CONFIGURATION STATUS Whenever configuration settings are changed the technician receives on-screen prompts and/or confirmation similar to those shown in Figure 4-7. Figure 4-7. Configuration Status Prompts 4.7 DATA TRANSMISSION INDICATORS Several configuration pages use an indicator light system to show discrete (ON/OFF) data and/or hardware component status. Unless otherwise noted, the following applies to all configuration page status indicators: • Green―expected data is successfully received and is ON. A green light can also indicate that the parameter/component is working correctly. • Red―expected data is not received. A red light can also indicate that a parameter/component is invalid. • Black―expected data is successfully received and is OFF, or no data is expected. A black light can also indicate that the parameter/component is not responding. Figure 4-8. Data Transmission Indicators A blank ACTIVE column displays the loss of communication between the display and a specific LRU (Figure 4-9). Figure 4-9. Loss of Communication ____________________________________________________________________ Page 4-10 G1000 System Maintenance Manual Rev. A 190-00903-00 Blank Page ____________________________________________________________________ G1000 System Maintenance Manual Page 5-1 190-00903-00 Rev. A SECTION 5 TROUBLESHOOTING This section contains LRU troubleshooting methods and procedures which are designed to help isolate a defective LRU. The procedures and methods do not pertain to any specific aircraft configuration. 5.1 TROUBLESHOOTING METHODS 5.1.1 Visual Hardware Inspection Begin troubleshooting with a visual inspection. Check for corrosion, damage, or other defects. Replace any damaged parts as required. Inspection may require the temporary removal of a unit or units to gain access to connectors. Follow the guidance given in Section 6 for LRU replacement. Refer to the OEM maintenance documentation for instructions on removing any aircraft access panels. 5.1.2 LRU Failure Annunciations When an LRU fails or is not receiving data, a large red ‘X’ is displayed in windows relating to the failed LRU (Figure 5-1 and Table 5-1). Figure 5-1. LRU Failure Annunciations 5.1.2.1 LRU Failure Annunciations and Recommended Actions Table 5-1 lists specific annunciations, the associated LRU, and recommended actions to take. Use the information listed in Table 5-1 in conjunction with Figure 5-1. ____________________________________________________________________ Page 5-2 G1000 System Maintenance Manual Rev. A 190-00903-00 Table 5-1. LRU Failure Annunciations and Recommended Actions Annunciation Associated LRU Recommended Actions NAV1 or COM1 GIA1 • Check PFD1 Alert Window for GIA1 configuration, software or failed data path error messages. Correct any errors before proceeding. • Swap GIA1 and GIA2 and reconfigure for their new positions to verify location of problem: − If problem follows GIA1, replace GIA1. • Check Ethernet interconnect from GIA1 to MFD or PFD1 (based on aircraft configuration) and unit connector pins for faults. • If problem persists, replace PFD1. NAV2 or COM2 GIA2 • Check PFD1 Alert Window for GIA2 configuration, software or failed data path error messages. Correct any errors before proceeding. • Swap GIA1 and GIA2 and reconfigure for their new positions to verify location of problem: − If problem follows GIA2, replace GIA2. • Check Ethernet interconnect from GIA2 to MFD or PFD2 (based on aircraft configuration) and unit connector pins for faults. • If problem persists, replace MFD or PFD2 (based on aircraft configuration). ____________________________________________________________________ G1000 System Maintenance Manual Page 5-3 190-00903-00 Rev. A Table 5-1. (continued) GPS INTEG or Time GIA1 or 2 • Ensure that a cell phone or a device using cell phone technology is not turned on (even in a monitoring state) in the cabin. • Check PFD1 Alert Window for GIA1/2 configuration, software or failed data path error messages. Correct any errors before proceeding. • Verify the aircraft is located where the GPS antennas have a clear view of the sky. • Verify the aircraft is not parked in close proximity to a hanger with the doors open equipped with a GPS repeater • On the MFD AUX – GPS STATUS page, check for erratic GPS Signal Strength bars. If they are erratic, external interference is affecting the GPS receiver. Locate source of interference and remove. • Swap GIA1 and GIA2 to verify location of problem. If problem follows the GIA, replace the GIA. • Check corresponding GPS antenna and cable for faults. Correct antenna or cable fault. • Check PFD1 to GIA1 and PFD2 (or MFD) to GIA2 Ethernet interconnect for faults. Correct interconnect fault. • If problem persists; replace PFD1, PFD2 or the MFD that shows the problem. ____________________________________________________________________ Page 5-4 G1000 System Maintenance Manual Rev. A 190-00903-00 Table 5-1. (continued) XPDR FAIL GTX 33 or 33D • Check PFD1 Alert Window for GIA1/2 and GTX 33 configuration, software or failed data path error messages. Correct any errors before proceeding. • Perform a SET>ACTV configuration reset on the GTX Transponder Configuration page for each installed GTX. • Verify the aircraft registration is entered for the transponders on the GTX Transponder Configuration page. • Check the GIA and GTX racks for connector pin faults (push-back or bent) on the RS-232 interconnect lines. • Replace the GTX 33/33D. • If problem persists, replace the GIA. AIRSPEED FAIL ALTITUDE FAIL VERT SPEED FAIL GDC 74B • Ensure that a cell phone or a device using cell phone technology is not turned on (even in a monitoring state) in the cabin. • Check PFD1 Alert Window for PFD1/2, MFD or GDC configuration, software or failed data path error messages. Correct any errors before proceeding. • Inspect GDC 74B pitot/static ports and plumbing for blockage. • Check GDC 74B configuration settings for the PFDs, MFD, GIA1, and GIA2. Reload if unsure they are correct. • If PFDs, MFD, and GIA configuration settings are correct, replace the GDC 74B. • If problem persists, replace the GDC 74B configuration module. OAT and TAS GTP 59 • Check OAT probe wiring, probe, and connectors for faults or damage. • Replace GDC 74B Config Module. • Replace the GTP 59. • If problem remains. replace GDC 74B. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-5 190-00903-00 Rev. A Table 5-1. (continued) ATTITUDE FAIL GRS 77 • Ensure that a cell phone or a device using cell phone technology is not turned on (even in a monitoring state) in the cabin. • Ensure metal objects (tool boxes, power carts, etc.) are not interfering with the magnetometer and aircraft is not in hangar, near other buildings, parked over metal drainage culverts or on hard surfaces that may contain steel reinforcements • Check PFD1 Alert Window for PFD1/2, MFD or GRS configuration, software or failed data path error messages. Correct any errors before proceeding. • Ensure GRS 77 unit connecter is secure and proper wire harness strain relief is provided. • Ensure the GRS 77 is fastened down tightly in it’s mounting rack and that the mounting rack is not loose (CAUTION - do not loosen the mounting rack hardware to the airframe shelf or the aircraft will need to be re-leveled and the PITCH/ROLL OFFSET procedure performed). • Cycle GRS 77 power to restart initialization. • Ensure GPS has acquired at least four satellites, has a 3D navigation solution, and a DOP of less than 5.0. This is particularly important for an ATTITUDE FAIL that appears during ground operation only. • Perform an Engine Run-Up Test to check if engine vibration is causing the GRS 77 to go offline. • Replace GRS 77. • If problem persists, replace the GRS77 Configuration module. • Contact Garmin Aviation Product Support if condition continues after replacing the GRS 77 and config module for additional assistance. ____________________________________________________________________ Page 5-6 G1000 System Maintenance Manual Rev. A 190-00903-00 Table 5-1. (continued) Annunciation Associated LRU Recommended Actions HDG FAIL GRS 77 & GMU 44 • Check PFD1 Alert Window for PFD1/2, MFD or GRS configuration, software or failed data path error messages. Correct any errors before proceeding. • Ensure metal objects (tool boxes, power carts, etc.) are not interfering with the magnetometer and aircraft is not in hangar, near other buildings, parked over metal drainage culverts or on hard surfaces that may contain steel reinforcements • Ensure that a cell phone or a device using cell phone technology is not turned on (even in a monitoring state) in the cabin. • Cycle power after moving aircraft away from metal objects to determine if metal objects were the source of the interference. Allow up to five minutes for the heading to reinitialize. • Perform a Magnetometer Interference Test to check for interference from onboard electrical system components (e.g. NAV lights). Pay particular attention to any new electrical devices that have been installed since the aircraft was new. Correct any discrepancies that do not allow this test to pass before continuing. • Ensure GRS 77 and GMU 44 connectors are secure. • Check the wiring and any inline connectors between the GRS and GMU for faults. • Recalibrate the GMU 44. • Replace the GMU 44. • If problem persists, replace the GRS 77. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-7 190-00903-00 Rev. A Table 5-1. (continued) Engine/Airframe Sensors GEA 71 & GIA 63W • Check PFD1 Alert Window for GIA1/2 or GEA1/2 configuration, software or failed data path error messages. Correct any errors before proceeding. • Verify GEA1/2 internal power supply and calibration status boxes are green in configuration mode. − If the internal power supply box is red, check for shorted sensors that receive 5V, 10V or 12V power from the GEA. − If the calibration status boxes are red, replace the GEA 71. • Verify internal, external, and reference voltages listed in the Main Analog and I/O A Analog boxes are not dashed out (does not include Aircraft Power 1 and 2). If any voltages are dashed out, replace the GEA. • Check the MFD AUX – SYSTEM STATUS page if the GEA is online (green checkmark is present). If GEA is not online (Red-X is present), verify the unit is receiving power at the GEA rack connector. • Reload configuration files to both GIA’s and the GEA. • Replace the GEA 71. • If problem persists, check the GIA/GEA interconnect wiring and unit connector pins for faults. ____________________________________________________________________ Page 5-8 G1000 System Maintenance Manual Rev. A 190-00903-00 5.1.3 System Status Page Failure Indications The System Status Page in the AUX group of pages displays the status for all detected LRUs. Active LRUs are indicated by green check marks and failed LRUs are indicated by red “X”s. Figure 5-2. System Status Page (AUX Group) 5.1.4 Data Path Failure Messages In addition to LRU failure annunciations, data path messages can also be used to help identify a faulty LRU. The following message indicates that a data path connected to the GDU (MFD or PFD) or the GIA 63/GIA 63W (1 or 2) has failed. 'FAILED PATH – A data path has failed. Check configuration mode' The failed path message is triggered by the timeout of a digital channel. The channels that are checked are displayed on these configuration pages: 1. Main GDU RS-232/ARINC 429 Configuration Page (PFD1/2, and MFD) (Figure 5-3). 2. GIA RS-232/ARINC 429 Configuration Page (GIA1 and GIA2) (Figure 5-4). 3. GIA RS-485 Configuration Page (GIA1 and GIA2) (Figure 5-5). Once the failed path message is displayed, it remains on the list of messages until the next power cycle. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-9 190-00903-00 Rev. A 5.1.5 Configuration Page Data Path Indications In addition to the failure messages, the data path can be checked by observing the indication boxes on the Main and GIA Configuration Pages. The status of the channel is indicated by the following colors: • Red = data path has failed • Black = data path status is unknown • Green = data path is good 5.1.5.1 GDU RS-232/ARINC 429 Configuration Page (PFD1/2 and MFD) Figure 5-3. Main RS-232/ARINC 429 Configuration Page The Main RS-232/ARINC 429 Configuration Page troubleshooting tables which follow show display status for the various pages. Note that channel assignments with their associated LRUs will differ depending on the specific aircraft configuration. These tables serve as examples only. ____________________________________________________________________ Page 5-10 G1000 System Maintenance Manual Rev. A 190-00903-00 SELECT UNIT―PFD1 RS-232 WINDOW Channel LRU Indicator Status PFD1/GMC 710 or GMC 715 data path is functioning correctly. PFD1/GMC 710 or GMC 715 data path is not functioning correctly. • Check PFD1 Alert Window for PFD1 or GMC configuration or software error messages. Correct any errors before proceeding. • Verify GMC is powered on by pressing the “ANN TEST” softkey on the MFD AUX - SYSTEM STATUS page to see if the key indicators turn on. • If GMC indicator lights do not come on, remove unit and verify power and ground are present at the GMC connector. − If power or ground is not present, troubleshoot aircraft wiring for faults. − If power and ground are present, check the PFD1 and GMC connector for damaged pins. • Swap PFD1 and PFD2 to confirm if the problem is in the original PFD1. − Replace original PFD1 if box turns green after swapping displays. • Replace the GMC. CHNL 2 GMC 710 or GMC 715 PFD1/GMC 710 or GMC 715 data path functionality is unknown. Reload PFD1 configuration file. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-11 190-00903-00 Rev. A SELECT UNIT―PFD1 ARINC 429 WINDOW Channel LRU Indicator Status/Recommended Actions PFD1/GRS 77 data path is functioning correctly PFD1/GRS 77 #1 data path is not functioning correctly. • Check PFD1 Alert Window for PFD1 or GRS configuration or software error messages. Correct any errors before proceeding. • Verify GRS77 #1 status is OK using the AUX - SYSTEM STATUS PAGE on the MFD. If it has a Red-X, troubleshoot why the GRS is offline before proceeding. • Ensure GRS connecter is secure and proper wire harness strain relief is provided. • Swap GRS1 and GRS2 (if a GRS2 is installed) to confirm if the problem is in the original GRS1. − Replace original GRS1 if box turns green after swapping units. • Swap PFD1 and PFD2 to confirm if the problem is in the original PFD1. − Replace original PFD1 if box turns green after swapping displays. • Check the PFD1/GRS 77 #1 interconnect wiring and unit connector pins for faults. • Replace GRS 77 #1. IN 1 GRS 77 #1 PFD1/GRS 77 data path functionality is unknown. Reload PFD1 configuration file. ____________________________________________________________________ Page 5-12 G1000 System Maintenance Manual Rev. A 190-00903-00 SELECT UNIT―PFD1 ARINC 429 WINDOW (Con't.) PFD1/GDC 74B #1 data path is functioning correctly PFD1/GDC 74B #1 data path is not functioning correctly. • Check PFD1 Alert Window for PFD1 or GDC configuration or software error messages. Correct any errors before proceeding. • Verify GDC 74B #1 status is OK using the System Status Page on the MFD. If it has a Red-X, troubleshoot why the GDC is offline before proceeding. • Swap PFD1 and PFD2 to confirm if the problem is in the original PFD1. − Replace original PFD1 if box turns green after swapping displays. • Check the PFD1/GDC 74B #1 interconnect wiring and unit connector pins for faults. • Replace GDC 74B #1. IN 2 GDC 74B #1 PFD1/GDC 74B #1 data path functionality is unknown. Reload PFD1 configuration file. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-13 190-00903-00 Rev. A SELECT UNIT―PFD2 RS-232 WINDOW Channel LRU Indicator Status/Recommended Actions PFD2/GMC 710 or GMC 715 data path is functioning correctly. PFD2/GMC 710 or GMC 715 data path is not functioning correctly. • Check PFD1 Alert Window for PFD2 or GMC configuration or software error messages. Correct any errors before proceeding. • Verify GMC is powered on by pressing the “ANN TEST” softkey on the MFD AUX - SYSTEM STATUS page to see if the key indicators turn on. • If GMC indicator lights do not come on, remove unit and verify power and ground are present at the GMC connector. − If power or ground is not present, troubleshoot aircraft wiring for faults. − If power and ground are present, check the PFD2 and GMC connector for damaged pins. • Swap PFD1 and PFD2 to confirm if the problem is in the original PFD2. − Replace original PFD2 if box turns green after swapping displays. • Replace the GMC. CHNL 2 GMC 710 or GMC 715 PFD2/GMC 710 or GMC 715 data path functionality is unknown. Reload PFD2 configuration file. ____________________________________________________________________ Page 5-14 G1000 System Maintenance Manual Rev. A 190-00903-00 SELECT UNIT―PFD2 ARINC 429 WINDOW Channel LRU Indicator Status/Recommended Actions PFD2/GRS 77 #2 data path is functioning correctly. PFD2/GRS 77 #2 data path is not functioning correctly. • Check PFD1 Alert Window for PFD2 or GRS configuration or software error messages. Correct any errors before proceeding. • Verify GRS77 #2 status is OK using the AUX - SYSTEM STATUS PAGE on the MFD. If it has a Red-X, troubleshoot why the GRS is offline before proceeding. • Ensure GRS connecter is secure and proper wire harness strain relief is provided. • Swap GRS1 and GRS2 (if a GRS2 is installed) to confirm if the problem is in the original GRS2. − Replace original GRS2 if box turns green after swapping units. • Swap PFD1 and PFD2 to confirm if the problem is in the original PFD2. − Replace original PFD2 if box turns green after swapping displays. • Check the PFD2/GRS 77 #2 interconnect wiring and unit connector pins for faults. • Replace GRS 77 #2. IN 1 GRS 77 #2 PFD2/GRS 77 #2 data path functionality is unknown. Reload PFD2 configuration file. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-15 190-00903-00 Rev. A SELECT UNIT―PFD2 ARINC 429 WINDOW (Con't.) PFD2/GDC 74B #2 data path is functioning correctly. PFD2/GDC 74B #2 data path is not functioning correctly. • Check PFD1 Alert Window for PFD2 or GDC configuration or software error messages. Correct any errors before proceeding. • Verify GDC 74B #2 status is OK using the System Status Page on the MFD. If it has a Red-X, troubleshoot why the GDC is offline before proceeding. • Swap PFD1 and PFD2 to confirm if the problem is in the original PFD2. − Replace original PFD2 if box turns green after swapping displays. • Check the PFD2/GDC 74B #2 interconnect wiring and unit connector pins for faults. • Replace GDC 74B #2. IN 2 GDC 74B #2 PFD2/GDC 74B #2 data path functionality is unknown. Reload PFD2 configuration file. ____________________________________________________________________ Page 5-16 G1000 System Maintenance Manual Rev. A 190-00903-00 SELECT UNIT—MFD ARINC 429 WINDOW Channel LRU Indicator Status/Recommended Action MFD/GRS 77 #1 data path is functioning correctly. MFD/GRS 77 #1 data path is not functioning correctly. • Check PFD1 Alert Window for MFD or GRS configuration or software error messages. Correct any errors before proceeding. • Verify GRS77 #1 status is OK using the AUX - SYSTEM STATUS PAGE on the MFD. If it has a Red-X, troubleshoot why the GRS is offline before proceeding. • Ensure GRS connecter is secure and proper wire harness strain relief is provided. • Swap GRS1 and GRS2 (if a GRS2 is installed) to confirm if the problem is in the original GRS1. − Replace original GRS1 if box turns green after swapping units. • Swap MFD and PFD1 (if the same P/N) to confirm if the problem is in the original MFD. − Replace original MFD if box turns green after swapping displays. • Check the MFD/GRS 77 #1 interconnect wiring and unit connector pins for faults. a. Replace GRS 77 #1. IN 1 GRS 77 #1 MFD/GRS 77 #1 data path functionally is unknown. Reload MFD configuration file. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-17 190-00903-00 Rev. A MFD/GDC 74B #1 data path is functioning correctly MFD/GDC 74B #1 data path is not functioning correctly. • Check PFD1 Alert Window for MFD or GDC configuration or software error messages. Correct any errors before proceeding. • Verify GDC 74B #1 status is OK using the AUX – SYSTEM STATUS page on the MFD. If it has a Red-X, troubleshoot why the GDC is offline before proceeding. • Swap MFD and PFD1 (if the same P/N) to confirm if the problem is in the original MFD. − Replace original MFD if box turns green after swapping displays. • Check the MFD/GDC 74B #1 interconnect wiring and unit connector pins for faults. • Replace GDC 74B #1. IN 2 GDC 74B #1 MFD/GDC 74B #1 data path functionality is unknown. Reload MFD configuration file. ____________________________________________________________________ Page 5-18 G1000 System Maintenance Manual Rev. A 190-00903-00 5.1.5.2 GIA RS-232/ARINC 429 Configuration Page (GIA1 and GIA2) Figure 5-4. GIA RS-232/ARINC 429 Configuration Page The following GIA RS-232/ARINC 429 Configuration Page troubleshooting tables which follow show display status for the various pages. Note that channel assignments with their associated LRUs will differ depending on the specific aircraft configuration. These tables serve as examples only. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-19 190-00903-00 Rev. A SELECT UNIT—GIA1 RS-232 WINDOW Channel LRU Indicator Status/Recommended Action GIA1/GDC 74B #1 data path is functioning correctly. GIA1/GDC 74B #1 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GDC configuration or software error messages. Correct any errors before proceeding. • Verify GDC 74B #1 status is OK using the AUX – SYSTEM STATUS page on the MFD. If it has a Red-X, troubleshoot why the GDC is offline before proceeding. • Swap GIA1 and GIA2, reconfigure both GIA’s to their new locations to confirm if the problem is in the original GIA1. − Replace original GIA1 if box turns green after swapping units. • Check the GIA1/GDC 74B #1 interconnect wiring and unit connector pins for faults. • Replace GDC 74B #1. CHNL 1 GDC 74B #1 GIA1/GDC 74B #1 data path functionality is unknown. Reload GIA1 configuration files. CHNL 2 GRS 77 #2 (output only) GIA1/GRS 77 #2 output data path is not monitored. A black box is normal. GIA1/GTX 33 #1 data path is functioning correctly. GIA1/GTX 33 #1 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GTX configuration or software error messages. Correct any errors before proceeding. • Swap GIA1 and GIA2, reconfigure both GIA’s to their new locations to confirm if the problem is in the original GIA1. − Replace original GIA1 if box turns green after swapping units. • Check the GIA1/GTX 33 #1 interconnect wiring and connector pins for faults. • Replace GTX 33 #1. CHNL 5 GTX 33D #1 w/TIS GIA1/GTX 33D #1 data path functionality is unknown. Reload GIA1 configuration files. ____________________________________________________________________ Page 5-20 G1000 System Maintenance Manual Rev. A 190-00903-00 SELECT UNIT—GIA1 RS-232 WINDOW (Con't.) GIA1/GRS 77 #1 data path is functioning correctly. GIA1/GRS 77 #1 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GRS configuration or software error messages. Correct any errors before proceeding. • Verify GRS77 #1 status is OK using the AUX - SYSTEM STATUS PAGE on the MFD. If it has a Red-X, troubleshoot why the GRS is offline before proceeding. • Ensure GRS connecter is secure and proper wire harness strain relief is provided. • Swap GIA1 and GIA2, reconfigure both GIA’s to their new locations to confirm if the problem is in the original GIA1. − Replace original GIA1 if box turns green after swapping units. • Swap GRS1 and GRS2 (if a GRS2 is installed) to confirm if the problem is in the original GRS1. − Replace original GRS1 if box turns green after swapping units. • Check the GIA1/GRS 77 #1 interconnect wiring and unit connector pins for faults. • Replace GRS 77 #1. CHNL 6 GRS 77 #1 GIA1/GRS 77 #1 data path functionality is unknown. Reload GIA1 configuration files. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-21 190-00903-00 Rev. A GIA1/GMA 1347D #1 data path is functioning correctly. GIA1/GMA 1347D #1 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GMA configuration or software error messages. Correct any errors before proceeding. • Verify GMA #1 status is OK using the AUX - SYSTEM STATUS PAGE on the MFD. If it has a Red-X, troubleshoot why the GMA is offline before proceeding. • Swap GMA 1347D #1 and GMA 1347D #2, reconfigure both GMA’s to their new locations to confirm if the problem is in the original GMA 1347D #1. − Replace original GMA 1347D #1 if box turns green after swapping units. • Swap GIA1 and GIA2, reconfigure both GIA’s to their new locations to confirm if the problem is in the original GIA1. − Replace original GIA1 if box turns green after swapping units. • Check the GIA1/GMA 1347D #1 interconnect wiring and connector pins for faults. CHNL 7 GMA 1347D #1 GIA1/GMA 1347D #1 data path functionality is unknown. Reload GIA1 configuration files. ____________________________________________________________________ Page 5-22 G1000 System Maintenance Manual Rev. A 190-00903-00 SELECT UNIT—GIA1 ARINC 429 WINDOW Channel LRU Indicator Status/Recommended Actions GIA1/GDC 74B #1 data path is functioning correctly. GIA1/GDC 74B #1 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GDC configuration or software error messages. Correct any errors before proceeding. • Verify GDC 74B #1 status is OK using the AUX – SYSTEM STATUS page on the MFD. If it has a Red-X, troubleshoot why the GDC is offline before proceeding. • Swap GIA1 and GIA2, reconfigure both GIA’s to their new locations to confirm if the problem is in the original GIA1. − Replace original GIA1 if box turns green after swapping units. • Check the GIA1/GDC 74B #1 interconnect wiring and unit connector pins for faults. • Replace GDC 74B #1. IN 5 GDC 74B #1 GIA1/GDC 74B #1 data path functionality is unknown. Reload GIA1 configuration files. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-23 190-00903-00 Rev. A GIA1/GRS 77 #1 data path is functioning correctly. GIA1/GRS 77 #1 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GRS configuration or software error messages. Correct any errors before proceeding. • Verify GRS77 #1 status is OK using the AUX - SYSTEM STATUS PAGE on the MFD. If it has a Red-X, troubleshoot why the GRS is offline before proceeding. • Ensure GRS connecter is secure and proper wire harness strain relief is provided. • Swap GIA1 and GIA2, reconfigure both GIA’s to their new locations to confirm if the problem is in the original GIA1. − Replace original GIA1 if box turns green after swapping units. • Swap GRS1 and GRS2 (if a GRS2 is installed) to confirm if the problem is in the original GRS1. − Replace original GRS1 if box turns green after swapping units. • Check the GIA1/GRS 77 #1 interconnect wiring and unit connector pins for faults. a. Replace GRS 77 #1. IN 6 GRS 77 #1 GIA1/GRS 77 #1 data path functionality is unknown. Reload GIA1 configuration files. ____________________________________________________________________ Page 5-24 G1000 System Maintenance Manual Rev. A 190-00903-00 SELECT UNIT—GIA2 RS-232 WINDOW Channel LRU Indicator Status/Recommended Actions GIA2/GDC 74B #2 data path is functioning correctly. GIA2/GDC 74B #2 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GDC configuration or software error messages. Correct any errors before proceeding. • Verify GDC 74B #2 status is OK using the AUX – SYSTEM STATUS page on the MFD. If it has a Red-X, troubleshoot why the GDC is offline before proceeding. • Swap GIA1 and GIA2, reconfigure both GIA’s to their new locations to confirm if the problem is in the original GIA2. − Replace original GIA2 if box turns green after swapping units. • Check the GIA2/GDC 74B #2 interconnect wiring and unit connector pins for faults. • Replace GDC 74B #2. CHNL 1 GDC 74B #2 GIA2/GDC 74B #2 data path functionality is unknown. Reload GIA2 configuration files. CHNL 2 GRS 77 #1 (output only) GIA2/GRS 77 #1 output data path is not monitored. A black box is normal. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-25 190-00903-00 Rev. A GIA2/GTX 33 #2 data path is functioning correctly. GIA2/GTX 33 #2 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GTX configuration or software error messages. Correct any errors before proceeding. • Swap GIA1 and GIA2, reconfigure both GIA’s to their new locations to confirm if the problem is in the original GIA2. − Replace original GIA2 if box turns green after swapping units. • Check the GIA2/GTX 33 #2 interconnect wiring and connector pins for faults. • Replace GTX 33 #2. CHNL 5 GTX 33/33D #2 w/TIS GIA2/GTX 33 #2 data path functionality is unknown. Reload GIA2 configuration files. ____________________________________________________________________ Page 5-26 G1000 System Maintenance Manual Rev. A 190-00903-00 SELECT UNIT—GIA2 RS-232 WINDOW (Con't.) GIA2/GRS 77 #2 data path is functioning correctly. GIA2/GRS 77 #2 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GRS configuration or software error messages. Correct any errors before proceeding. • Verify GRS77 #2 status is OK using the AUX - SYSTEM STATUS PAGE on the MFD. If it has a Red-X, troubleshoot why the GRS is offline before proceeding. • Ensure GRS connecter is secure and proper wire harness strain relief is provided. • Swap GIA1 and GIA2, reconfigure both GIA’s to their new locations to confirm if the problem is in the original GIA2. − Replace original GIA2 if box turns green after swapping units. • Swap GRS1 and GRS2 (if a GRS2 is installed) to confirm if the problem is in the original GRS2. − Replace original GRS2 if box turns green after swapping units. • Check the GIA2/GRS 77 #2 interconnect wiring and unit connector pins for faults. a. Replace GRS 77 #2. CHNL 6 GRS 77 #2 GIA2/GRS 77 #2 data path functionality is unknown. Reload GIA2 configuration files. ____________________________________________________________________ G1000 System Maintenance Manual Page 5-27 190-00903-00 Rev. A GIA2/GMA 1347D #2 data path is functioning correctly. GIA2/GMA 1347D #2 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GMA configuration or software error messages. Correct any errors before proceeding. • Verify GMA #2 status is OK using the AUX - SYSTEM STATUS PAGE on the MFD. If it has a Red-X, troubleshoot why the GMA is offline before proceeding. • Swap GMA 1347D #1 and GMA 1347D #2, reconfigure both GMA’s to their new locations to confirm if the problem is in the original GMA 1347D #2. − Replace original GMA 1347D #2 if box turns green after swapping units. • Swap GIA1 and GIA2, reconfigure both GIA’s to their new locations to confirm if the problem is in the original GIA2. − Replace original GIA2 if box turns green after swapping units. • Check the GIA2/GMA 1347D #2 interconnect wiring and connector pins for faults. CHNL 7 GMA 1347D #2 GIA1/GMA 1347D #2 data path functionality is unknown. Reload GIA2 configuration files. ____________________________________________________________________ Page 5-28 G1000 System Maintenance Manual Rev. A 190-00903-00 SELECT UNIT—GIA2 ARINC 429 WINDOW Channel LRU Indicator Status/Recommended Actions GIA2/GDC 74B #2 data path is functioning correctly. GIA2/GDC 74B #2 data path is not functioning correctly. • Check PFD1 Alert Window for GIA or GDC configuration or software error messages. Correct any errors before proceeding. • Verify GDC 74B #2 status is OK using the AUX – SYSTEM STATUS page on