Garmin Diamond DA40, Maintenance Manual

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G1000/DA40 System Maintenance Manual Page 2-3
190-00303-03 Revision 6
2.1.2 GMA 1347 Audio Panel
The Garmin GMA 1347 Audio Panel is a digital audio panel with integrated marker beacon receiver. The GMA
1347 provides control of all cockpit intercom/mic systems as well as NAV/COM/ILS audio. The unit also provides
display reversion mode control through a large red button. Power is received from the ‘Avionics’ bus. The unit
only powers up when the avionics master switch is turned on. The GMA 1347 interfaces with the existing marker
beacon antenna as well as existing mic and phone jacks.
2.1.3 GIA 63 Integrated Avionics Unit (2)
Two Garmin GIA 63 IAUs provide VHF COM, VHF NAV, GPS NAV and other various navigation functions.
GIAs provide communication interface to all other G1000 LRUs in the system. Both GIAs are located remotely
beneath the baggage compartment in a sheetmetal enclosure, as shown in Figure 2-6 and Figure 2-7. The #1 GIA is
powered through the ‘Essential’ power bus and immediately powers up when the aircraft master switch is turned on.
The #2 GIA receives power through the ‘Avionics’ bus and powers up when the avionics master switch is turned on.
Both GIA 63s interface to the following equipment:
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Existing KAP 140 Flight Control System (GIA 2)
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Existing VOR/LOC/Glideslope Antenna System
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Existing VHF COM 1 & 2 Antennas
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Existing GPS 1 & 2 Antennas
2.1.4 GEA 71 Engine/Airframe Unit
The Garmin GEA 71 Engine/Airframe Unit provides engine/airframe data to the G1000 system. Data received from
transducers/sensors is processed, then sent to GIA 63, and subsequently to the GDU 1040 MFD. In display
reversionary mode, engine instrumentation is displayed on the PFD as well. The GEA is located behind the
instrument panel and is mounted in a vertical orientation as depicted in Figure 2-2 and Figure 2-6. Power is received
from the ‘Essential’ power bus. The GEA interfaces to the following:
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Manifold Pressure Sensor (MAP)
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Oil Pressure Sensor
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Fuel Pressure Sensor
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Tachometer Sensor
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Oil Temperature Sensor
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Fuel Flow Sensor
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4 Cylinder Head Temperature (CHT) Sensors
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4 Exhaust Gas Temperature (EGT) Sensors
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Alternator Current Sensor
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Existing Fuel Probes
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Existing Pitot Heat System
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Existing Open Door Detection Switches
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Existing Starter Engage System
2.1.5 GTX 33 Mode S Transponder
The Garmin GTX 33 provides Mode A, C, and S altitude and position reporting information to the G1000
system. The unit is mounted in the remote avionics enclosure below the baggage compartment (See
Figure 2-6 and Figure 2-7). Power is received from the ‘Essential’ bus. The GTX 33 interfaces with the
existing transponder antenna.