Garmin Striker 4 Manuale Proprietario

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To check the voltage, measure the female power and ground 
sockets of the power cable for DC voltage. If the voltage is 
less than 10 Vdc, the device will not turn on.
My sonar does not work
• Push the transducer cable all the way into the back of the 
device.
Even if the cable seems to be connected, you should push 
firmly so that it is fully seated.
• Check to make sure the sonar transmission is turned on.
Troubleshooting
9