Signal Conditioners; Instrument Panel Annunciators (Prop Synch And Standby Battery) - Garmin G1000 Nxi System Maintenance Manual

Signal Conditioners

Removal:
1. For Signal Conditioner No. 1, remove PFD1 from the instrument panel per Section 6.1.
For Signal Conditioner No. 2, remove PFD2 from the instrument panel per Section 6.1.
2. Remove 3 top screws from Signal Conditioner rack.
3. Slide mounting tray out from rack and disconnect the unit connector. If needed, remove
MFD as per Section 6.1 to access the Signal Conditioner connector.
4. Remove the four mounting bolts and remove the Signal Conditioner unit.
5. If planning to reinstall the same unit, it is not necessary to disconnect the ground strap
from the unit ground stud. If replacing with a new unit, disconnect the ground strap from
the removed unit and retain the ground strap and associated hardware for reinstallation
on the new unit.
Reinstallation:
1. Reinstallation of the Signal Conditioners is the reverse of the removal. Reference the
Main Instrument Panel Installation drawing, listed in Table 1-1, for more details.
2. Proceed to Section 7.4.3 for testing.

Instrument Panel Annunciators (Prop Synch and Standby Battery)

Removal:
1. Remove MFD from the instrument panel as per Section 6.1.
2. Using a M22885/108T8234 extraction tool, disconnect connector from the back of the
switch.
3. Pull the pushbutton cap fully out of the switch body and allow the cap to rotate 90° where
it is held by the retaining element.
4. While holding the retaining sleeve (back side of the instrument panel), loosen the two
screws inside the switch body until the switch is free to come out.
5. Remove the mounting sleeve and switch from the instrument panel.
Reinstallation:
1. Reinstallation of the Prop Synch and Standby Battery switches is the reverse of the
removal. Reference the Main Instrument Panel Installation drawing, listed in Table 1-1,
for more details.
2. Press and hold the cockpit annunciator "Press To Test" switch located to the left of the
annunciator panel, and verify the following:
• For the Standby Battery Annunciator/Switch: STBY Battery Switch legends
illuminates and reflects "STANDBY BATTERY" in white, "ARM" in green, and
"ON" in amber.
• For the Prop Synch Annunciator/Switch: Prop Synch Switch legends illuminates
and reflects "PROP SYNC" in white, and "ON" in green.
3. Release cockpit annunciator "Press To Test" switch.
4. If further maintenance is not required, proceed to Section 9.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Page 247
Revision 1