Furuno DFF1, Operator'S Manual

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4. MAINTENANCE
4.1 Maintenance
Regular maintenance is essential for good performance. Check the items listed in the
table below monthly to help keep your equipment in good shape for years to come.
Checking
Item Action
Transducer cable Check that cable is tightly fastened and is not damaged.
Replace if damaged.
Power cable, transducer
cable plug Check that they are tightly fastened and not damaged.
Refasten if necessary. Replace if damaged.
Ground Check for corrosion. Clean if necessary.
Power supply voltage Check voltage. If out of rating correct problem.
Cleaning the network
sounder’s cabinet Dust or dirt on the cabinet may be removed with a dry cloth.
Do not use chemical-based cleaners to clean the cabinet;
they can remove paint and markings.
Transducer Marine life on the transducer face will result in a gradual
decrease in sensitivity. Check the transducer face for
cleanliness each time the boat is dry-docked. Carefully
remove any marine life with a piece of wood or fine-grade
sandpaper.
WARNING
Do not open the equipment
unless totally familiar with
electrical circuits and
service manual.
Only qualified personnel
should work inside the
equipment.