Raymarine L470 instruction manual Maintenance and Troubleshooting, Cleaning Instructions

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5 – Maintenance and Troubleshooting

5 – Maintenance and Troubleshooting

Periodically check the display unit, cable, and transducer. Be sure all components are free of corrosion and are securely mounted. Check all cables for signs of chafing or abrasion. Be sure all of the connections to the boat’s DC power and ground system are clean and tight.

Cleaning Instructions

Always keep the display unit clean. Use a soft, clean cloth to wipe off the display panel. Do not use abrasive cleansers, chemical cleaners or solvents. Use a glass cleaner or a suitable general-purpose detergent.

If you operate your boat in salt water, you will have to protect the hull with antifouling paint. Use caution when sanding or cleaning the outside of the hull near the transducer. Harsh cleaning solvents such as acetone may damage the transducer.

Sea growth can collect quickly on the bottom of the transducer. This can reduce the performance in just a few weeks. To prevent this, coat the bottom of the transducer with a thin layer of paint. Use only a water-based antifouling paint, or a water-based paint specifically designed for transduc- ers. Apply it with a brush.

If your transducer becomes fouled or stops working because of sand or sea growth, use a stiff brush to clean it. You may sand the surface with a fine-grit wet or dry sandpaper (#320 grade or finer), but this will affect the performance of the unit when the boat is moving at higher speeds.

The paddle wheel mechanism may become jammed by dirt or grit. Work this out of the mechanism, then clean the unit with soap and water or alcohol.

Troubleshooting Suggestions

If the unit is not working correctly, there may be a simple cause. Before you call for service help, please check these points:

The FishFinder display unit will not turn on –

1.The unit may actually be operating, but the contrast may have been set to the “full light” or “full dark” setting. With the unit turned off, hold the CLEAR button. When you press PWR to turn the unit on, all settings

Maintenance and Troubleshooting

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Contents FishFinder L470 Instruction ManualRaymarine Installation ContentsIntroduction Operating Instructions4 Setup Instructions Specifications Maintenance and TroubleshootingPage List of FiguresFrequency Menu Item viiiIntroduction 1 - IntroductionAbout the FishFinder L470 System Components Optional AccessoriesStandard Equipment Standard TransducersTransducer switch box select between two L470 About the Transducer 2 - InstallationInstallation Use a transom-mount transducer if Selecting the Correct Type of TransducerUse a thru-hull transducer if Use an in-hull transducer ifPositioning the Transom-Mount Transducer Assembling the Transducer BracketUse a trolling motor transducer if Use a Sidelooker transducerTransducer Bracket Side View Transducer Mounted on TransomAllow a clearance of at least 10 inches 254 mm 10 254 mm Transducer in released positionMounting the Transducer No!No!NoCorrect Mounting Position Mounting the Transom-Mount Transducer 3. Remove the two screws and the bracket covering the paddle wheels Installation Notes - Thru-Hull Transducer Installation Notes - In-Hull Transducer Installation Notes - Trolling Motor Transducers Installation Notes - Transducer for Speed and Temperature Only EMC Installation GuidelinesSuppression Ferrites Dismounting the Display Unit Mounting the Display Unit - Standard Mount2-25/32 Dimensions70 mm 210 mmFlush-mount Installation Mounting the Display Unit - Flush MountDisassembling from Bracket Installing the Transducer CableFiberglass 1/4 6mm Aluminum 1/2 13 mm Installing Cable on TransomCable feed-thru cap Cable clamp 1 25 mm Hull projections Installation with Separate Speed and Temperature Sensors Installing the Transducer Cable - Sidelooker OptionInstalling the Transducer Cable Making the DC Power Connections RF ground DC Power ConnectionsDC 12V connector to battery T/D connector to transducer RED BLACK Calibrating the Sensors higher value for Speed Cal. If the display unit is reading high, use a smaller number for Speed Cal. You may enter any value between 75 and Operating Instructions 3 - Operating InstructionsControls on Display Panel CLEAR Up and down arrows - andLeft and right arrows - and Setup Memory Turning the Power On and OffLamp/Contrast Menu Mode Operating PagesFunction See pageis turned on Only if Sidelooker featureAuto frequency on Transducer frequency FishFinder PageShallow alarm set Top of display Fish alarm set This entry shows the speed of the boat through the water Center of displayFrom the System Setup Menu, you can turn this item off or Bottom of display Choosing a Frequency When the boat is moving very fast Fish Indications50 kHz 200 kHz An arch-shaped image indicates a fishBottom Indications Rocks Bottom ConditionsHard Sand Soft Mud WindowContents Window PageOptions for Window Page Option A Option C Option E Option GOption B Option D Option F Option H Sidelooker Page Once the Sidelooker feature has been turned on, you can reach the Sidelooker page easily. Press the or buttons on the Page Control Pad until the Sidelooker Page appears. The unit will present a display similar to Fig Here are the special items on this display Bottom/Shore Digital Page button. The Log may be reset to zero from the A-Scope Mode Zoom ModeBottom Lock Mode Performance ModesZoom display Performance ModesZoom Mode Zoom magnification A-Scope Bottom Coverage Mode Bottom coverage Bottom Lock Mode the selected range, then Bottom Lock will not display the bottom image The Setup Menu 4 - Setup InstructionsSetup Instructions Fig.4-1Sidelooker Range SettingSetup Instructions Sensitivity Setting Auto sensitivity Changing the Chart Speed Setting Chart Speed SettingFrequency Setting AUTO frequency Resetting the Log Fig.4-8 System Setup MenuThe unit can present the display information in one of seven different languages. English is the default language whichSetup Instructions For example, if the temperature reading on Shallow AlarmCLEAR water. You can silence the buzzer again by pressing the conditions occurs shallow, deep, or fish alarm. For theUnits used for speedUnits used by CodeZoom Select Menu Setup Menus for Zoom Modefeature is particularly useful when fishing for species of fish button to leave this display, and store the Auto Zoom settingZoom Screen Split/Full Menu Item Bottom Lock Range Menu Item Setup Menus for Bottom Lock ModeBottom Lock Split/Full Menu Item Setup Menu for Window Page Setup Instructions for Sidelooker Resetting from the Digital PageSidelooker Range Menu Item Sidelooker Sensitivity Menu Item Sidelooker Chart Speed Menu ItemDisplay Option Information Shown Sidelooker View Menu ItemCombining Displays Resetting the Unit to Factory Defaults Default - US model Default - Europe model Default SettingsCleaning Instructions 5 - Maintenance and TroubleshootingTroubleshooting Suggestions Maintenance and TroubleshootingThe display unit “freezes” temporarily or permanently The FishFinder does not display fish arches The display unit does not see the bottom or fishThe display unit shows lots of background “noise” The depth setting flashes oftenFor marine product and services information How to Contact RaymarineFor accessories and parts Servicing a Thru-Hull TransducerFor technical support For product repair serviceRaymarine in Europe Prepaid Return ServiceMaintenance and Troubleshooting General Information 6 - SpecificationsSpecifications Feet, fathoms, meters FishFinder FunctionsConnectors Connector DiagramsGlossary Glossary of TermsStatute mile 5280 ft Nautical mile 6076 feetWarranty Limitations Limited Warranty Certificate