System Return To Service Procedure; Recommended Test Equipment; Table 8-1 - Lru Status Indicators - Garmin G3X Touch Maintenance Manual

8.

SYSTEM RETURN TO SERVICE PROCEDURE

This section provides checkout procedures to be completed after maintenance and/or repair has been
performed in accordance to this manual, in order to verify the proper operation and function of G3X Touch
systems.
Perform the procedures as applicable to the specific installation. Procedures not applicable may be
skipped.
8.1

Recommended Test Equipment

The following test equipment is recommended to conduct and complete all post installation checkout
procedures in this section:

Ground power cart (capable of supplying power to the aircraft systems and avionics)

Calibrated Air data test set

Calibrated VHF NAV test set

Low resistance ohmmeter

Calibrated Digital Level

Digital Multi-Meter (DMM)

Calibrated Optical Tachometer
8.1.1 LRU Status and Software Check
Perform LRU status and software check. The "System Information" page in the configuration mode of the
GDU 4X0 PFD has a "Devices Online" tab that reports the status of installed LRU's and their currently
installed software part numbers and versions. The icon/checkbox next to each LRU reports a green
checkmark, a 'red x' or blank checkbox to indicate the status of each LRU as described in Table 8-1.
To access the System Information Page, perform the following steps on the primary GDU:
1. In configuration mode, select the System Information Page. Scroll the Device List box and the
selected device's info by using the Touch Panel or a Move Selector Knob.
2. Verify that all LRUs connected or configured to each display have a green indicator and correct
software part numbers and version numbers are reported.
3. Press the Back key to return to the Configuration Mode page when finished. Return the GDU to
normal mode.
Color LRU Condition
Green The LRU is online & no faults found.
Red 'X' The LRU is online & a fault, warning, or error has been detected.
Blank The LRU is not online.
Maintenance Manual
G3X Touch EFIS Part 23 AML STC
Table 8-1 – LRU Status Indicators
Page 91
190-02472-02
Revision 2