Humminbird 200DX manual Unit comes on before I press POWER, and wont turn off

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MAINTENANCE AND WARRANTY

TROUBLESHOOTING

5. The unit comes on before I press POWER, and won't turn off.

Check the transducer cable. If the outer jacket of the cable has been cut and the cable is in contact with bare metal, you need to repair the cut with electrical tape. If there is no problem with the cable, disconnect the transducer from the unit and see if the problem is corrected, to confirm the source of the problem.

6. I get gaps in the reading at high speeds.

Your transducer needs adjusting. If the transducer is transom-mounted, there are two adjustments available to you - height and running angle. Make small adjustments and run the boat at high speeds to determine the effect. It may take several tries to optimize high speed operation. This can also be a result of air or turbulence in the transducer location caused by rivets, ribs, etc.

7. My unit loses power at high speeds.

Most Humminbird fishfinders have over-voltage protection that turns the unit off when input voltage exceeds 20 VDC. Some outboard motors do not effectively regulate the power output of the engine's alternator and can produce voltage in excess of 20 volts when running at high RPMs. Your fishfinder displays input voltage in the Diagnostic screen. Use this readout to determine if the voltage exceeds 20 VDC.

8. The screen begins to fadeout. Images are not as sharp as normal.

Check the input voltage using Diagnostic. The fishfinder will not operate on input voltages below 10 VDC.

9.The display shows many black dots at high speeds and high sensitivity settings.

You are seeing noise or interference caused by one of several sources. Noise can be caused by other electronic devices. Turn off any nearby electronics and see if the problem goes away. Noise can also be caused by the engine. If engine noise is causing the interference, the problem will intensify at higher RPMs. Increase the engine speed with the boat stationary to isolate this cause. Propeller cavitation can appear as noise on-screen. If the transducer is mounted too close to the propeller, the turbulence generated can interfere with the sonar signal. Ensure that the transducer is mounted at least 15" (38cm) from the prop.

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Contents Page Table of Contents Installation Preparation AccessoriesInstallation Overview Parts SuppliedDetermining How to Mount the Transducer Alternate Transducers and Mounting Methods Portable MountingTrolling Motor Mounting Thru-Hull MountingBeginning Installation Transducer ExchangeTransom Installation InstallationStep One Determine Where to Mount the Transducer Step Two Drill the Mounting Holes Step Three Assemble the TransducerStep Five Adjust the Running Position of the Transducer Step Four Mount the Transducer to the TransomStep Six Route the Cable Step One Determine the Mounting Location Inside the Hull InstallationStep Two Test the Mounting Location Step Three Permanently Mount the Transducer Step One Determine Where to Mount Control Head InstallationStep Two Connect the Power Cable to the Boat Step Three Drill the Mounting Holes Step Four Run the CablesStep Five Assembling the Connector Holder Your Humminbird is now ready for operationTest the Installation Using the 200DX HOW Sonar WorksFeature Memory Simulator OperationWhat YOU see ON-SCREEN What You See On-ScreenUsing the 200DX What YOU see on Screen Control Functions Control FunctionsUsing the 200DX Using the 200DX Menu Functions Using the 200DX Using the 200DX Using the 200DX Using the 200DX Using the 200DX Using the 200DX Using the 200DX Using the 200DX Advanced Features Using the Diagnostic FeatureAdvanced Features Specifications Fstn LCDMaintenance and Warranty MaintenanceNothing happens when I turn the unit on TroubleshootingThere is no transducer detected There is no bottom reading visible on the display Unit comes on before I press POWER, and wont turn off My unit loses power at high speedsGet gaps in the reading at high speeds Screen begins to fadeout. Images are not as sharp as normalHumminbird ONE Year Full Warranty Service Policy Customer Support
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