Garmin G1000 Nxi System Maintenance Manual page 136

(B) AHRS and ADC data path check
1. Verify there are no AHRS loss of data messages, such as:
•
AHRS not receiving any GPS information
•
AHRS not receiving backup GPS information
•
AHRS using backup GPS source
2. Place the G1000 in configuration mode.
3. In the GIA page group, go to the GIA RS-232/ARINC 429 CONFIG page.
4. With GIA1 selected in the SELECT UNIT window, verify the following indicators are
green:
•
RS232 Channel 1 [(GDC72 #1) or (GDC74 #1)]
•
RS232 Channel 6 [(GRS79 #1), (GRS77 #1), or (GRS7800 #1)]
•
ARINC 429 IN2 [(GSU75 #2), (GRS77 #2) or (GRS7800 #2)]
•
ARINC 429 IN5 [(GDC74 #1)] (only if a GDC 7400 installed)
•
ARINC 429 IN6 [(GSU75 #1), (GRS77 #1), or (GRS7800 #1)]
(Ref. Section 5.1.1.2.)
5. With GIA2 selected in the SELECT UNIT window, verify the following indicators are
green:
•
RS232 Channel 1 [(GDC72 #2) or (GDC74 #2)]
•
RS232 Channel 6 [(GRS79 #2), (GRS77 #2), or (GRS7800 #2)]
•
ARINC 429 IN2 [(GSU75 #1), (GRS77 #1), or (GRS7800 #1)]
•
ARINC 429 IN5 [(GDC74 #2)] (only if a GDC 7400 is installed)
•
ARINC 429 IN6 [(GSU75 #2), (GRS77 #2), or (GRS7800 #2)]
(Ref. Section 5.1.1.2.)
6. In the GDU page group, go to the GIA RS-232/ARINC 429 CONFIG page.
7. With PFD1 selected in the SELECT UNIT window, verify the following indicators are
green:
•
ARINC 429 IN1 [(GSU75 #1), (GRS77 #1), or (GRS7800 #1)]
•
ARINC 429 IN2 [(GDC72 #1) or (GDC74 #1)]
(Ref. Section 5.1.1.1.)
8. With PFD2 selected in the SELECT UNIT window, verify the following indicators are
green:
•
ARINC 429 IN1 [(GSU75 #2), (GRS77 #2), or (GRS7800 #2)]
•
ARINC 429 IN2 [(GDC72 #2) or (GDC74 #2)]
(Ref. Section 5.1.1.1.)
9. Restart the G1000 in normal mode.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Page 123
Revision 1