Garmin GTN 7 series Manual de instruções - Página 7
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The optional GMA 35 is an audio panel with a Marker Beacon receiver. The GMA 35 in conjunction with
a GTN 7XX provide full audio panel capability, for communication and navigation radios, headsets,
microphones, and speakers. The GMA 35 is mounted in a notch behind the GTN 7XX to free up mounting
space in the flight deck instrument panel. Rotorcraft model specific installation of the GTN is documented
in GTN 6XX/7XX PART 27 AML STC INSTALLATION MANUAL and Garmin 190-01007-H9 Rev. 1, "GTN
6XX/7XX Navigator Installation, Eurocopter EC 130B4/T2 Rotorcraft".
2.3 Control, Operating, and Testing Information
See Garmin 190-01004-03 Rev. D, "GTN 625/635/650 Pilot's Guide" and 190-01007-03 Rev. D, "GTN
725/750 Pilot's Guide" for information on how to operate the system in normal mode.
See the Section 3 of the GTN 6XX/7XX PART 27 AML STC SYSTEM MAINTENANCE MANUAL, Section
3 for details on how to operate and access configuration mode and diagnostic pages, and Section 1.5 for
document part numbers. See Section 6 for general ground checks and system test procedures.
See GTN 6XX/7XX PART 27 AML STC SYSTEM MAINTENANCE MANUAL for a system description.
2.4 Servicing Information
None. In the event of system failure, troubleshoot the GTN 6XX/7XX and GMA 35 in accordance with
Section 4 of the GTN 6XX/7XX PART 27 AML STC SYSTEM MAINTENANCE MANUAL.
2.5 Periodic Maintenance
The GTN and GMA 35 are designed to detect internal failures. A thorough self-test is executed
automatically upon application of power to the units, and built-in tests (BIT) are continuously executed.
Detected errors are indicated as failure annunciations, system messages, or a combination of the two.
Operation of the GTN 6XX/7XX and GMA 35 is not permitted unless the inspections described in this
section have been completed within time intervals prescribed in Table 1. All antennas connected to the
GTN should be maintained in accordance with maintenance and inspection data appropriate for the
antenna installation.
Item
Description/Procedure
Removal and replacement of the following items. See Section
Equipment Removal
5 of the GTN 6XX/7XX PART 27 AML STC SYSTEM
& Replacement
MAINTENANCE MANUAL for instructions.
• GTN 6XX/7XX or GMA 35 units
• NAV antenna cable splitter
• NAV antenna cable diplexer
• Fan
The display backlight LEDs are rated by the manufacturer as
Display Backlight
having a usable life of at least 36,000 hours. This life may be
more or less than the rated time depending on the operating
conditions of the GTN. Over time, the backlight lamp may dim
and the display may not perform as well in direct sunlight
conditions. The user must determine by observation when the
display brightness is not suitable for its intended use. Contact
the Garmin factory repair station when the backlight lamp
requires service.
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter EC130 Series
Page 4 of 21
Table 1. Maintenance Intervals for GTNs and GMA 35
Interval
On Condition
On Condition
190-01007-K9 Rev. 1