Mooney M20M, Pilot Operating Handbook

Page: 287 / 377

GI 275 Part 23 AML STC
190-02446-12 Rev. 4
Airplane Flight Manual Supplement Page 47 of 70
Controls Overview
A dual concentric knob with a center push-button provides the primary means
with which to navigate between screens and access menus and functions of the
GI 275. The outer knob will always change from Page-to-Page on GI 275s that
have multiple pages. A display touch is required in most cases to select the
display field of a Page that will be changed by inner knob rotation or press. The
inner knob changes the value of the selected field. For primary, stand-alone
ADIs the outer knob does not provide any control since there is no other page
available for selection. When the outer knob is rotated, a momentary display of
knob function is provided at the top of each page.
To access the Menu, press and hold the inner knob. To access the Menu via
touchscreen, swipe up from the bottom of the GI 275 display.
Display Brightness
Display brightness is controlled automatically based on input to a bezel-mounted
photocell. The brightness level can be manually adjusted using controls in the
Menu → Backlight selection. Optionally, brightness can be controlled using the
aircraft’s cockpit lighting dimmer control.
System Power Sources
The GI 275 primarily depends on aircraft power to function. The GI 275 system
is directly connected to the aircraft’s main or essential bus and energized when
the aircraft master switch is turned on. Other systems, like the navigation
equipment, weather datalink, and autopilot are typically located on the avionics
bus and may not be functional when this bus is powered off.
The major components of the GI 275 are protected with resettable circuit
breakers available to the pilot. These breakers are labeled as follows
(appropriate boxes will be checked):