NorthStar Navigation installation manual Returning a 491 for service

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SECTION FOUR — Troubleshooting and servicing the

Returning a 491 for service

Before returning the 491 to the factory, to prevent delays it is critical that you first obtain a Return Materials Authorization (RMA) number from the Northstar Service Department. If the 491 was purchased through a dealer, call the dealer with the 491 serial number so they can help you get an RMA number. The 491’s serial number can be found on the label at the top of the 491.

Shipments without a proper RMA number will not be accepted!

If you have overnight or second-day shipping requirements, before ship- ping the 491, please call Northstar for turnaround time, freight charges, and payment arrangements.

The 491 should be shipped only in a properly designed carton with pack- ing material. Shipments to the Northstar factory should be made to the following address:

Northstar

Service Department

30 Sudbury Road

Acton, MA 01720 USA

NOTE:

Return the transducer to its manufacturer, not to

 

Northstar.

 

 

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491 INSTALLATION MANUAL Revision A

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Contents Echo Sounder Installation Manual Page Table of Contents Page Section ONE Introduction Welcome to the NorthstarWho should read this manual Scope of this manual Installation considerations Section TWO Installing the transducer Safety considerationsNorthstar-recommended transducers Airmar transducer elementsChoosing a mounting location Do not mount the transducerHull thickness limits Installing the transducer LWLUsing anti-fouling paint LWLCleaning a transducer DetailPage Section Three Installing Section Three Installing Installation Manual Revision a System components Echo sounder system components with the Northstar 961/962Mounting 190 dia 360 diaWiring Connecting the 491 to the 961/962Cable connection between the 961/962 Interface cable connection from 961/962 toConnecting the 491 to the 957/958 Connecting the 491 to a transducer 491-to-transducer connector pin wiringInitial checkout Turning the 491 onFor the 961/962 Turning the 491 off Installation test checklistSetting up the echo sounder For the 957/958/6000iSection Four Troubleshooting and servicing Status LED961/962 echo sounder system troubleshooting 957/958/6000i echo sounder system troubleshooting Getting technical support Contacting NorthstarOrdering replacement parts Servicing Hearing from youReturning a 491 for service Appendix a Technical specifications 491 technical specificationsON/OFF Glossary Cavitation Deadrise Echo sounder Fairing block TransducerGlossary Installation Manual Revision a Index 491 Index Index Installation Manual Revision a