Standby Indicator Check - Garmin GI 275 Installation Manual

6.5.3.4 EIS Annunciator Light Check
If an EIS annunciator(s) is installed, perform the following procedure:
1. In Configuration mode, navigate to the Discrete Outputs page (Diagnostics → Discrete Outputs).
2. Toggle the discrete labeled as "Engine Warning" (as configured in Section 5.4.12.1) to Active and
verify that the red engine annunciator lamp illuminates. Toggle back to Inactive.
3. Toggle the discrete labeled as "Engine Caution" (as configured in Section 5.4.12.1) to Active and
verify that the yellow engine annunciator lamp illuminates. Toggle back to Inactive.
NOTE
For separate annunciators, if the annunciator lights do not illuminate, verify the lamp
operation by pressing on the lens holder. If the lamp does not illuminate, inspect and/or
replace the lamps and repeat the check.
4. If the annunciator(s) do not illuminate, remove power from the aircraft and inspect the wiring.
6.5.4

Standby Indicator Check

This check verifies the configuration of the MFD/Standby ADI and HSI/Standby ADI automatic reversion
and backup battery. Aircraft not configured for auto-reversionary standby instruments do not need to
perform the following check.
1. Power on all GI 275s in the system in Normal mode.
2. Verify that no amber or red battery icon is displayed on the GI 275 standby display and that no
messages annunciate.
3. Verify that attitude, heading, altitude, and airspeed are displayed normally on the standby display's
ADI page and on the primary display (i.e., no warnings, cautions, or advisories related to these
functions).
4. Verify that the additional configured pages display information on the standby display (i.e., the
standby should not be in reversionary mode).
5. Power off the primary display.
6. The standby display should revert to the ADI page within 1 second. Ensure that the attitude,
heading, altitude, and airspeed are displayed normally on the GI 275 standby display (i.e., no
warnings, cautions, or advisories related to these functions).
7. Power back on the primary display.
8. Verify that the primary display returns to Normal mode (may take up to 2 minutes for AHRS to
align after restoring power).
9. Turn off the aircraft master switch and verify that all displays not equipped with a backup battery
have powered off.
10. Touch Stay On on the dialog box that appears on the standby display. If any other display has the
backup battery installed, touch Turn Off.
11. Verify that attitude, heading, altitude, and airspeed are displayed on the standby display.
12. Turn back on the aircraft master switch.
13. Verify that all displays in the system return to Normal mode (may take up to 2 minutes for AHRS
to align).
190-02246-10
Rev. 11
GI 275 Part 23 AML STC Installation Manual
Page 6-34