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Troubleshooting
Before contacting the Humminbird® Customer Resource Center, please read the
following section. Taking the time to review these troubleshooting guidelines may
allow youto solve aperformance problem yourself, andtherefore avoid sendingyour
unit back for repair.
300 Series™ Doesn’t Power Up
If your300 Series™doesn’t power up,use theInstallation Guide thatalso comeswith
it for specific confirmation details, making sure that:
• The power cable is properly connected to the 300 Series™ control head.
• The power cable is wired correctly, with red to positive battery terminal and
black to negative terminal or ground.
• The fuse is operational.
• The battery voltage of the power connector is at least 10 Volts.
Correct any known problems, including removing corrosion from the battery
terminals or wiring, or actually replacing the battery if necessary.
300 Series™ Defaults to Simulator with a Transducer Attached
A connected and functioning transducer will cause the newly-started Fishing System
to go into Normal operating mode automatically. If, when you power up the Fishing
System, it goes into Simulator mode automatically, even though a transducer is
already connected, this means that the control head is not detecting the transducer.
Perform the following troubleshooting tasks:
• Using the Installation Guide that also comes with your Fishing System, check
to make sure that the transducer cable is securely connected to the Fishing
System. Reconnect if necessary, andpower up the Fishing System again to see
if this fixes the problem.
• Replace the non-functioning transducer with a known good transducer if
available and power up the control head again.
• Check the transducer cable. Replace the transducer if the cable is damaged or
corroded.