Tecnam P2002 JF - ATA 23-10 SL30;SL40 Troubleshooting

Page 101 2
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Edition – Rev 0
23 – 10
COMM 1 and 2 – TROUBLESHOOTING
Following table provides information to assist troubleshooting if problems occur on
SL30/SL40 unit.
ATA 23-10 SL30/SL40 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
The SL30 does not
transmit.
The TxKey input is not
being pulled low.
Checks the TxKey (mic
key) input, pulled low for
transmit.
A weather channel is
selected.
Select a different
frequency, the unit will not
transmit on a weather
channel.
The input voltage is too
low.
Check input supply voltage
(> 9 volts DC required)
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