Raymarine DS400 & DS500 User Manual

Chapter 7: Maintenance and Problem Solving

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This chapter provides information on routine maintenance and on possible 
causes of problems you may experience with your DS400/500.

CAUTION:  
This unit contains high voltage. Adjustments require specialized service 
procedures and tools only available to qualified service technicians - 
there are no user serviceable parts or adjustments and the operator 
should not attempt to service the equipment. The operator should not 
remove the rear cover of the module.

The DS400/500 is a sealed unit. Maintenance procedures are therefore 
limited to the following periodic checks:

•

Examine the cables for signs of damage, such as chafing, cuts or nicks.

•

Check that the cable connectors are firmly attached.

The DS400/500 is a sealed unit and does not require regular cleaning. 
However, if you find it necessary to clean the unit, please follow these basic 
procedures:

•

Ensure power is off.

•

Wipe the module clean with a damp cloth.

•

If necessary, use IPA (isopropyl alcohol) or a mild detergent solution to 
remove grease marks.

Sea growth can collect quickly on the bottom of the transducer, this can 
reduce the performance in just a few weeks. To prevent the build-up of sea 
growth, coat the transducer with a thin layer of paint.