Page 5-54
G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Revision 1
190-00716-01
5.10 GIA 63 Troubleshooting
5.10.1
COM
Symptom Recommended
Action
Weak COM transmit power
•
Switch GIA1 and GIA2, to verify location of problem:
9
If problem follows unit, replace GIA.
9
If problem does not follow unit, check COM antenna and cabling for
faults.
Weak COM receiver
•
Switch GIA1 and GIA2, to verify location of problem:
9
If problem follows unit, replace GIA.
9
If problem does not follow unit, check COM antenna and cabling for
faults.
No COM sidetone
•
Switch GIA1 and GIA2, to verify location of problem:
9
If problem follows unit, replace GIA.
9
If problem persists, replace GMA1 with a known good unit.
9
If problem persists, reinstall original GMA1 and replace GMA2.
5.10.2
NAV
Symptom Recommended
Action
Weak NAV receiver
•
Set up a NAV/COM Ramp Test Set to radiate a test signal.
•
Switch GIA1 and GIA2, to verify location of problem:
9
If problem follows unit, replace GIA.
9
If problem does not follow unit, check NAV antenna, coupler, and
cabling for faults.
5.10.3
G/S
Symptom Recommended
Action
Weak G/S receiver
•
Set up a NAV/COM Ramp Test Set to radiate a test signal.
•
Switch GIA1 and GIA2, to verify location of problem:
9
If problem follows unit, replace GIA.
9
If problem does not follow unit, check NAV antenna, coupler, and
cabling for faults.
Summary of Contents for Cessna Caravan G1000
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