Garmin G1000 Line Maintenance Manual page 124

Uncontrolled if Printed
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Table 4-5. GIA 64W System Messages (Continued)
System Message
COM1 REDUCED TX
POWER
COM1 RMT XFR
COM1 SERVICE
COM1 INOP - SERL
COM1 INOP - SYNTH
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Page 4-40
Cause
The COM sub-system of
the GIA is operating in a
reduced power transmit
mode due to a voltage
fault or it has exceeded its
operating temperature
range.
The COM1 remote
transfer key line is stuck in
the enabled state.
A fault has been detected
in the COM subsystem of
GIA1. COM1 may still be
usable.
There is COM serial
communication fault.
There is COM synthesizer
lock fault.
Recommended Actions
• Check input voltage to the
GIA while transmitting.
• Check for loose
connections, bent pins, or
shorts.
• Check the fan, wiring, and
air tubing for proper
ventilation (if applicable)
• Replace fan or cooling
system if not sure it is
operating correctly.
• If the fault continues,
replace the GIA.
• Press the remote transfer
switch to cycle operation.
• Check the remote transfer
switch and wiring.
• If the fault continues,
replace the GIA.
• Cycle power to the GIA.
• Replace the GIA.
• Cycle power to the GIA.
• Check status of the other
LRU.
• Check data bus wiring.
• Retrieve log from CMC
Fault Folder.
• If the problem persists,
replace the GIA.
• Cycle power to the GIA.
• Perform a radio check.
• Check data bus wiring.
• Retrieve log from CMC
Fault Folder.
• If the problem persists,
replace the GIA.
LMM for the Kodiak 100
190-02102-00 Rev.4