Garmin G1000 Nxi System Maintenance Manual page 118

Item
GSU 75B, GRS 77, or
GRS 7800
AHRS/ADAHRS
(Qty 2)
GMU 44
Magnetometer (Qty 2)
GDL 69A or GDL 69A
SXM
GWX 68 or GWX 70
GMC 710
GCU 477
GTS 820/850 Traffic
Unit
GTS Traffic
Processor
GRA 5500
GPA 65 PA/LNA Unit
GDL 59 Wi-Fi
Datalink
GSR 56 Satellite
Receiver
GSD 41 Data
Concentrator
G1000 Cooling Fan
Fail Annunciation
Check
G1000 Cooling Fan
Fail Annunciation
Check
Nose Avionics
Compartment Fans
Operational Check
Instrument Panel
Fans Operational
Check
G1000 Redundant
Connection Check*
Engine Data Check*
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Description/Procedure
Removal & Replacement
Magnetic variation database update.
Removal & Replacement
Verify the operation of the fan power and fan
speed monitoring circuits for GIA1 fan and
GIA2 fan.
Verify the operation of the fan power and fan
speed monitoring circuits for PFD1 fan, MFD
fan and PFD2 fan and fan fail messages.
Functional test of the GIA1 and GIA2 ported
fans. Verify airflow from all fan ports.
Functional test of the PFD1, MFD and PFD2
cooling fans. Verify airflow from each fan.
Verify PRI and SEC power sources for PFD
1, GIA 1, GSU 1 (or GRS 1, and GDC 1).
Verify secondary paths for ADAHRS (or
AHRS and ADC), engine parameters and
GPS data.
Verify the operation of PFD and MFD
Ethernet connections.
Verify ARINC connection between GSU 1
(or ADC 1 and GRS 1) and MFD.
Verify DISPLAY BACKUP button function.
Verify engine data is available and accurate
with GIA 1 or GIA 2 inoperative.
Manual
Interval
Section No.
6.9
4.6
6.10
6.11
6.16
6.15
6.14
On Condition
6.31
6.31
6.36
6.32
6.34
6.35
6.37
9.4
9.4
820 hours max
4.14
4.15
4.10 220 hours max
4.11 820 hours max
Page 105
Revision 1