Garmin G1000 Nxi System Maintenance Manual page 153

3) GIA CAN / RS-485 CONFIGURATION (GIA1 and GIA2)
Once the FAILED PATH message has been triggered, it will remain on the list
of messages until the next power cycle. This latching was implemented so
that for intermittent failures, the message would remain at the end of the
flight (to alert maintenance crew). Also, this keeps the crew from having to
acknowledge message repeatedly in the case of intermittent failures.
The box next to each channel indicates the current status of the channel per the below:
•
Red X = data path is known to be failed
•
Amber question mark (?) = data path status is unknown
•
Green checkmark ()= data path is known to be good
The applicable data paths can be verified by viewing the following configuration mode pages.
GDU RS-232 / ARINC 429 CONFIG Page
PFD 1 RS-232
Channel LRU
CHNL 2 GMC 710
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
IMPORTANT!
Indicator Status
Green PFD1/GMC 710 data path is functioning correctly.
PFD1/GMC 710 data path is not functioning correctly.
•
Verify GMC710 is powered on.
o If GMC 710 will not power on, remove unit and
Red
•
Load PFD1 and GMC 710 configuration files.
•
Swap PFD1and PFD2 to confirm if the problem is in
the original PFD1.
o Replace original PFD1 if box turns green after
•
Check the PFD1/GMC 710 interconnect wiring for
faults.
Replace GMC 710 if problem remains.
PFD1/GMC 710 data path functionality is unknown.
Amber
Reload PFD1 configuration file.
verify power and ground are present at the
GMC connector.

If power or ground is not present,
troubleshoot aircraft wiring for faults.

If power and ground are present,
replace GMC 710.
swapping displays.
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