Garmin G3X Touch, Maintenance Manual

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Maintenance Manual 190-02472-02
G3X Touch EFIS Part 23 AML STC Revision 2
Page 18
3. G3X CONTROL & OPERATION
The Garmin G3X Touch EFIS is intended for Part 23 aircraft covered by the AML STC # SA01899WI.
The following is an overview of G3X Touch panel-mounted units and display features that are provided by
the G3X Touch EFIS.
3.1 GDU 4X0 Softkeys/Features and Control
The GDU 4X0 does not have a power button and will turn ON when power is applied to the aircraft. G3X
Touch remote-mounted LRUs also do not have dedicated power buttons but will turn ON when battery
power is applied to the aircraft or the dedicated bus power (avionics power) is applied. The G3X GDU has
the following controls as shown in Figure 3-1:

Dual Concentric Knobs – Control knobs that can be used to scroll and select through various
options on the display. Pressing the knob acts as an enter or selection of the currently highlighted
information. The function of each knob on the lower bezel is context sensitive and is identified on
the screen just above the associated knob. Reference Section 3.2.2.1 for using the GDU knob in
configuration mode.

Menu Button – Used to enter configuration or configuration/diagnostic mode. Reference Garmin
G3X Touch EFIS Part 23 AML STC Installation Manual (190-02472-01) for specific functions
covered in various pages in configuration mode. In normal mode, pressing the MENU button once
brings up the “PFD options” and twice will bring up the “Main Menu”.

Back Button – Used to return to a previous section/page.

Direct to – Not used in configuration mode.

NRST Button – Used in conjunction with the MENU button to enter diagnostic mode or with
MENU and BACK buttons to reboot the GDU. No other functions in configuration mode.

Photocell – The photocell may be configured to be used by the display to automatically adjust
the display backlighting in reference to ambient light conditions.

SD Card Slot – A card slot in the display that accepts standard SD cards. The following list
shows the tasks that can be performed via the SD card slot with an SD card installed:
o
Update databases
o
Software updates
o
Datalogging