Gia 63 Troubleshooting - Garmin G1000 Nxi System Maintenance Manual

GIA 63 Troubleshooting

COM
Symptom
Weak COM transmit power
Weak COM receiver
No COM sidetone
NAV
Symptom
Weak NAV receiver
G/S
Symptom
Weak G/S receiver
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Recommended Action
•
Switch GIA1 and GIA2, to verify location of problem:

If problem follows unit, replace GIA.

If problem does not follow unit, check COM antenna and cabling for
faults.
•
Switch GIA1 and GIA2, to verify location of problem:

If problem follows unit, replace GIA.

If problem does not follow unit, check COM antenna and cabling for
faults.
•
Switch GIA1 and GIA2, to verify location of problem:

If problem follows unit, replace GIA.

If problem persists, replace GMA1 with a known good unit.

If problem persists, reinstall original GMA1 and replace GMA2.
Recommended Action
•
Set up a NAV/COM Ramp Test Set to radiate a test signal.
•
Switch GIA1 and GIA2, to verify location of problem:

If problem follows unit, replace GIA.

If problem does not follow unit, check NAV antenna, coupler, and
cabling for faults.
Recommended Action
•
Set up a NAV/COM Ramp Test Set to radiate a test signal.
•
Switch GIA1 and GIA2, to verify location of problem:

If problem follows unit, replace GIA.

If problem does not follow unit, check NAV antenna, coupler, and
cabling for faults.
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