Humminbird 405SX Customer Support, Further information on Humminbird products can be found at

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MAINTENANCE

CUSTOMER SUPPORT

Units received on Friday are usually shipped by Wednesday, units received Monday are usually shipped by Thursday, etc.

We reserve the right to deem any product unserviceable when replacement parts are no longer reasonably available or impossible to obtain.

After the original warranty period, a standard flat rate service charge will be assessed for each repair (physical damage and missing parts are not included). Please call our Customer Support Department to verify the service charge for your unit.

If charges are not prepaid, the unit will be returned C.O.D. If you are experiencing problems related to bottom or depth readings, please send your transducer along with your unit when sending for repair.

CUSTOMER SUPPORT

If you have any questions, call our Humminbird Customer Support Hotline: 1-334-687-0503

Throughout the U.S. and Canada, hours are Monday-Friday, 8:00 a.m. to 5:00 p.m. Central time.

If after reading “Troubleshooting” you determine your unit needs factory service, please attach a description of the problem and send it with the unit to the address below.

If you are including a check, please attach it to the unit.

Humminbird

Service Department

108 Maple Lane

Eufaula, AL 36027

Further information on Humminbird products can be found at:

www.humminbird.com

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Contents 405SXSINGLEBEAMfishfinder Operations ManualThank YOU Table of Contents Installation Preparation AccessoriesInstallation Overview Parts SuppliedInstallation Overview Determining How to Mount TransducerAlternate Transducers and Mounting Methods Alternate Transducers and Mounting MethodsPortable Mounting Trolling Motor MountingBeginning Installation Beginning InstallationUsing the 405SX HOW Sonar WorksHOW Sonar Works Simulator OperationWhat You See On-Screen Feature MemorySimulator Operation What YOU see ON-SCREEN Screen as regular clusters of ind To best represent those conditions on-screenWater interferes with Sonar What YOU see on Screen Fish ID. The 405SX uses Instance, a small schoolControl Functions Control Functions2D View Large Digit View Chart View Menu Functions Menu Functions Sensitivity. The Sensitivity function controlsDepth Range Using the 405SX Bottom return. The left Side of the screen is a Lower Zoom LimitUsing the 405SX Triplog Using the 405SX Blacken in the display below the bottom. This gives Speed offset is remembered after power is disconnected Using Diagnostic Using the Diagnostic FeatureMaintenance MaintenanceNothing happens when I turn the unit on MAINTENANCE/TROUBLESHOOTINGTroubleshooting There is no transducer detected There is no bottom reading visible on the displayTroubleshooting Unit comes on before I press POWER, and won’t turn offMy unit loses power at high speeds Get gaps in the reading at high speedsMAINTENANCE/WARRANTY WARRANTY/SERVICE PolicyHumminbird ONE Year Full Warranty Service PolicyFurther information on Humminbird products can be found at Customer SupportCustomer Support Specifications Page TOP