Insignia 250DX manual My unit loses power at high speeds

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MAINTENANCE

TROUBLESHOOTING

7. My unit loses power at high speeds.

Your 250DX has 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. The 250DX displays input voltage in the Diagnostic screen. Use this readout to determine if the voltage exceeds 20 VDC.

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

Check the input voltage using Diagnostic. The 250DX 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 Operations Manual Thank YOU Table of Contents Parts Supplied Installation PreparationAccessories Installation OverviewDetermining How to Mount the Transducer Installation OverviewTrolling Motor Mounting Alternate Transducers and Mounting MethodsAlternate Transducers and Mounting Methods Portable MountingTransducer Exchange Beginning InstallationTransducer Exchange HOW Sonar Works Using the 250DXHOW Sonar Works Simulator Operation Feature MemorySimulator Operation What You See On-Screen What YOU see ON-SCREENDepth of the water changes, the range What YOU see on Screen Control Functions Control FunctionsUsing the 250DX Using the 250DX Menu Functions Menu FunctionsUsing the 250DX Depth Range Upper Zoom Limit To disable Zoom, press the Menu button until Fish symbols shown on-screen Using the 250DX Using the 250DX Using the 250DX Numeral Size. Two options are available Using the 250DX Using Diagnostic Advanced FeaturesUsing the Diagnostic Feature Maintenance MaintenanceMaintenance Troubleshooting TroubleshootingNothing happens when I turn the unit on There is no bottom reading visible on the display There is no transducer detectedGet gaps in the reading at high speeds Unit comes on before I press POWER, and won’t turn offScreen begins to fade out. Images are not as sharp as normal My unit loses power at high speedsCustomer Support Customer SupportSpecifications TOP
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