Gdl 69A Sxm (If Installed); Configuration Modules - Garmin G1000 NXi Supplemental Maintenance Manual

2. Disconnect the ADAHRS connector.
3. Disconnect the pitot and static lines.
4. Turn each retention screw counterclockwise until they disconnect from the remote rack.
5. Gently slide the unit from the remote rack. Do NOT loosen the remote rack hardware
fastening it to the avionics shelf or the GSU 75 must be re-calibrated per Section 7.10)
GSU 75 Installation:
1. Visually inspect the connector to ensure there are no bent or damaged pins. Also
inspect the pitot and static fittings for damage. Repair any damage.
2. Place the GSU 75 unit on the remote rack and slide the unit back until the feet are fully
engaged with the remote rack.
3. Push down and turn each retention screw clockwise. Torque each retention screw to
15-20 in-lbs.
4. Connect the pitot and static lines.
5. Connect the ADAHRS connector to the unit.
6. Calibrate and test the GSU 75 per Section 7.10.
6.4

GDL 69A SXM (if installed)

Removal:
For 182 and 206 aircraft, gain access by removing the right side GDU 1054B display unit
1.
(see Section 6.1.)
For 172 aircraft, gain access to the aft avionics compartment in the tail of the aircraft.
2.
Unlock the GDL 69A SXM handle by loosening the Phillips screw on the handle.
3.
Pull the handle upward to unlock the GDL 69A. Gently remove the unit from the rack.
4.
Reinstallation:
Visually inspect the connectors to ensure there are no bent or damaged pins. Repair
1.
any damage.
Lift the handle and gently insert the GDL 69A SXM into its rack. The handle should
2.
engage the dogleg track.
Press down on the GDL 69A SXM handle to lock the unit into the rack.
3.
Lock the handle to the GDL 69A SXM body using the Philips screw. Torque the handle
4.
screw to 10-14 in-lbs.
Configure and test the GDL 69A SXM according to Section 7.11.
5.
6.5

Configuration Modules

Configuration Module Removal & Replacement
Configuration modules (Reference Figure 6-1 and Table 6-1, Item 1 shown below) are located in
the following LRU harness connector backshells: GDU 1054B or GDU 1050 PFD. Additionally,
the GSU 75 has different style configuration modules that are located in the connector
backshells. Refer to Section 6.5.2 for the GSU 75 configuration module removal and
G1000 Supplemental Maintenance Manual
Textron Nav III Series
190-02128-04
Page 6-3
Revision 3