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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 you to solve a performance problem yourself, and therefore avoid sending your
unit back for repair.
900 Series™ Doesn’t Power Up
If your 900 Series™ doesn’t power up, use the Installation Guide that also comes with
it for specific confirmation details, making sure that:
• the power cable is properly connected to the 900 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.
900 Series™ Defaults to Simulator with a Transducer Attached
A connected and functioning transducer will cause the newly-started 900 Series™ to
go into Normal operating mode automatically. If, when you power up the 900 Series™,
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 900 Series™, check to
make sure that the transducer cable is securely connected to the 900 Series.
Reconnect if necessary, and power up the 900 Series™ 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.
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