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Trouble shooting
Unit doesn’t power up.
a) Check the cable connection and wiring. Make sure the cable is properly connected
to the Fishfinder. The red wire connects to positive terminal, and black to negative
terminal or ground.
b) Make certain the battery voltage is not lower than the warning value (10v)
c) Check the fuse.
Weak Bottom Echo, Unstable Depth Reading, or No Fish Signals.
a) Make certain the transducer is installed properly.
b) Extremely heavy vegetation may confuse the sonar signal, causing it to misinterpret
the depth. If you are certain that the readings are incorrect under these conditions,
discontinue use.
c) Oil, dirt and fuel might cause a film to form on the transducer and reduce its effe-
ctiveness. Cleaning the face of the sensor might help.
d) Electrical noise from the boat's motor can interferes with the sonar, which will cause
some weaker signals being eliminated.
e) Please check the battery voltage. The unit's transmitter power will decrease due
to the voltage drop. And this will reduce its ability to find the bottom or targets.
f) The sonar might be in turbulent water. Mounting it in a smooth flow of water might help.
No depth readout when transducer is installed in the way “Shoot-
thru-hull”.
Make certain the hull of the boat is single layer construction. Also any air trapped in
the lamination of the fiberglass would prevent the sonar
signal passing through, which will cause no depth readout.
Bottom disappears, suddenly weakens, when the boat moves at high
speed
a) The transducer might be in turbulent water. See the installation guide and adjust
the transducer position to a smooth flow of water.
b) Electrical noise from the boat's motor can interferes with the sonar, which will cause
some weaker signals being eliminated. Try increasing the Noise Reject level or
