Tecnam P2002 JF - ATA 23-10 GMA 340 Troubleshooting; ATA 23.10 GNS 430 W; 530 W Troubleshooting

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Edition – Rev 0
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COMM 1 and 2 – TROUBLESHOOTING
TROUBLESHOOTING
Following table provides information to assist troubleshooting if problems occur on GNS
550W unit installation on P2002 JF.
The applicable CMM contains other troubleshooting and testing procedures dedicated to the
applicable unit and based on the fault messages displayed.
ATA 23.10 GNS 430W / 530W Troubleshooting
Trouble
Likely cause
Action required
The unit does not power
on.
The unit is not getting
power to the main
connector.
Make sure power is
connected to the main
connector
Check circuit breakers and
avionics switch.
The unit does not transmit.
Antenna disconnected
Check antenna connection
Antenna wiring defective
Test wiring
PTT switch failure
Replace PTT switch
PTT circuit defective
Test PTT switch wiring
MIC failure
Replace MIC
MIC circuit defective
Test MIC switch wiring
Unit defective
Replace/overhaul unit
Following table provides information to assist troubleshooting if problems occur on GMA
340 Audio Panel unit.
ATA 23-10 GMA 340 Troubleshooting
Trouble
Likely cause
Action required
The unit does not power
on.
The unit is not getting
power.
Check power connections,
breakers and avionics
switch
Faulty electrical wiring
Check wiring