Garmin G1000 Nxi System Maintenance Manual page 401

VOR/LOC/GS Test
Perform the following test using ramp test equipment. Operate the equipment according to the
test equipment manufacturer's instructions.
The PFD HSI does not show a course deviation bar unless a valid VHF NAV
frequency is tuned.
1. Ensure FD is coupled to PFD 1 as indicated by a left pointing arrow next to the XFR
button.
2. Simulate a VOR signal on a radial equivalent to the aircraft heading. Tune the NAV 1
and NAV 2 receivers to the simulation frequency.
3. Set the HSI on PFD 1 to VOR1 by pressing the CDI softkey until VOR1 is selected. Set
the HSI on PFD 2 to VOR2 by pressing the CDI softkey until VOR2 is selected. Rotate
CRS1 and CRS2 knobs to set VOR1 and VOR2 course pointers to aircraft heading.
(CDI Synchronization must be set to OFF on the Aux – System Setup 1 page on the
MFD.)
4. Verify full scale deflection of VOR1 and VOR2 CDI by varying the selected course at
least 10° left and right. Reset course pointers to aircraft heading.
5. Engage the autopilot and press the NAV key on the AFCS mode controller. Using the
CRS1 knob alter course by 10° to the right. Verify the flight director and aircraft controls
respond by flying to the VOR course. Repeat to the left.
6. Couple FD to PFD2 by pressing the XFR button on the AFCS mode controller. Verify FD
is coupled right as indicated by a right pointing arrow on the AFCS mode controller next
to the XFR button. Repeat step 5 using CRS2 knob while coupled to PFD2.
7. Set CRS1 and CRS2 course pointers to aircraft heading.
8. Simulate a Localizer/Glideslope signal. Tune this signal on NAV 1 and NAV 2 receiver.
Set the PFD 1 HSI to LOC1 and PFD 2 HSI to LOC2 by pressing CDI softkey until LOC1
and LOC2 is selected. Use the test equipment to center the deviation bars (localizer and
glideslope) on PFD1 and PFD2.
9. Press the APR key on the AFCS mode controller. Verify that the LOC and GS
annunciations are green on PFD 1 and PFD 2. Apply right/left and up/down
localizer/glideslope signals using the test equipment. Verify that the Flight Director and
flight controls respond appropriately.
10. Couple FD to PFD 1 by pressing the XFR button on the AFCS mode controller. Verify
FD is coupled to PFD 1 as indicated by a left pointing arrow on the AFCS mode
controller next to the XFR button.
11. Repeat step 9 while coupled to PFD 1.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
NOTE
Page 388
Revision 1