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Troubleshooting
If your unit is not working, or if you need technical help, use the following
troubleshooting section before contacting the customer service department.
1. Check the power cable’s connection at the unit.
2. Make sure the power cable is wired properly. The red wire
connects to the positive battery terminal, black to negative
or ground.
3. Check the fuse.
4. Measure the battery voltage at the unit’s power connector.
You will measure the two biggest pins. It should be at least
10 volts. If it isn’t, the wiring to the unit is defective, the bat-
tery terminals or wiring on the terminals are corroded, or the
battery needs charging.
1. Electrical noise from the boat’s motor, trolling motor, or an
accessory may be interfering with the sonar unit. Rerouting
the power and transducer cables away from other electrical
wiring on the boat may help. Route the sonar unit’s power
cable directly to the battery instead of through a fuse block
or ignition switch.
2. Inspect the transducer cable for breaks, cuts, or pinched
wires.
3. Check the transducer and power connector. Make sure it’s
securely plugged into the unit.
1. Make sure face of the transducer is parallel to the ground.
(Refer to the installation manual for more information.)
2. If the transducer is mounted inside the hull, be sure it is
shooting through only one layer of berglass, that it is
securely bonded to the hull and DOES NOT have air
Troubleshooting
Unit won’t turn on
Unit freezes, locks up, or operates erratically
Weak bottom echo, erratic readings or no sh returns
119


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