Troubleshooting; G1000 Alerting System - Garmin G1000 NAV III Line Maintenance Manual

2

TROUBLESHOOTING

Begin troubleshooting by determining the specific failure. Follow guidance for the appropriate LRU provided in
this section. Reference applicable aircraft manufacturer provided wiring diagrams as an aid in troubleshooting.
See Section 3 for instructions on removing and replacing. Once an LRU is replaced, a software
update and configuration may be required. See Section 4 for instructions on configuration and
uploading software.
If PFD1, MFD1, GIA1 or GIA2 configuration files are loaded during troubleshooting, any
optional equipment files for equipment installed in the aircraft must also be loaded. Failure to
reload the optional configuration files may deactivate the equipment. Be sure to note any
optional equipment installed (by pre-inspection or by logbook entry) before loading PFD/MFD
and/or GIA 1/2 configuration files.

2.1 G1000 Alerting System

2.1.1 System Annunciations
A red X through a display field; such as Com frequencies, Nav frequencies, or engine data, indicates that display
field is not receiving valid data. Figure 2-1 shows display fields that are not receiving valid data and their
associated LRUs. See Section 2.1.1.1 for information on troubleshooting system annunciations.
No. 1 GIA 63
No. 2 GIA 63
Attitude: GRS 77 AHRS
Heading: GRS 77 or GMU 44
No. 1 & 2 GIA 63
or GEA 71
or Equivalent
Engine/Airframe
Sensors
G1000 Nav III Line Maintenance Manual
190-00352-00
NOTE
NOTE
GTP 59 OAT Probe
or GDC 74A ADC
Figure 2-1. Red X'd Display Fields
GIA 63 No. 1, 2
No. 1 GIA 63
No. 2 GIA 63
GDC 74A
Air Data Computer
GTX 33 Transponder or
#1 & 2 GIA 63
Page 2-1
Rev. L