30.6 Sonar troubleshootingProblems with the sonar and their possible causes and solutions are described here.Problem Possible causes Possible solutionsUnit power supply fault. Check the unit power supply and cables.Other unit fault. Refer to the instructions supplied with the unit.Check that the unit is correctly connected to a Raymarinenetwork switch. If a crossover coupler or other couplercable / adapter is used, check all connections (asapplicable).Check the status of the Raymarine network switch (ifapplicable).SeaTalkhs / RayNet networkproblem.Check that SeaTalkhs/ RayNet cables are free fromdamage.Sonar data not available onmultifunction display.Software mismatch betweenequipment may preventcommunication.Contact Raymarine technical support.Gain or Frequency settings maybe inappropriate for presentconditions.Check the sonar presets, gain and frequency settings.Unit power supply fault. Check the voltage from the power supply, if this is too lowit can affect the transmitting power of the unit.Unit cable fault. Ensure that the power, transducer and all other cables tothe unit are properly connected and free from damage.Check that the transducer is mounted correctly and isclean.Transducer fault.If you have a transom mount transducer, check that thetransducer hasn't kicked-up due to hitting an object.Other unit fault. Refer to the instructions supplied with the unit.Vessel stationary. Fish arches are not displayed if the vessel is stationary;fish will appear on the display as straight lines.High vessel speed Turbulence around the transducer may be confusing theunit.Problematic data readings.Note: Not all transducersand / or sonar modulessupportthedetectionofdepth,range and temperature. Formore information, refer tothe latest specifications anddocumentation availablefor your particular productson the Raymarine website(www.raymarine.com).Scroll speed set to zero Adjust the scroll speed.Paddle wheel fault Check that the paddle wheel is clean.No speed offset set Add speed offset.Incorrect calibration Re-calibrate equipmentIncorrect speed reading (DST)Transducer does not have aspeed elementInstall transducer with speed element to enable speedreadings.410 a Series / c Series / e Series
