Furuno FCV-582L manual Maintenance & Troubleshooting, Cleaning the Display Unit, Checking

MAINTENANCE & TROUBLESHOOTING

WARNING

Do not open the cover.

There are no user-serviceable parts inside. Refer any repair work to a qualified technician.

4.2 Cleaning the Display Unit

Dust or dirt on the display unit can be removed with a soft cloth. If desired a water-moistened cloth may be used. Do not use chemical clean- ers to clean the display unit; they can remove paint and markings.

4.1 Checking

Regular maintenance is essential for good per- formance. Checking the items listed in the table below on a regular basis will keep the equipment in good shape for years to come.

Table 4-1 Checking

Item	Action
Cable run	If conductors are
	exposed, replace
	cable.
Power cable,	If loosened,
transducer cable plug	tighten.
Display unit ground	If corroded, clean.
Ship's mains	If out of rating,
voltage	correct problem.

4.3 Transducer Maintenance

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.

4.4 Replacing the Fuse

The fuse on the power cable protects the sys- tem from reverse polarity of the ship’s mains and equipment fault. If the fuse blows, find the cause before replacing it. Use only a 3A fuse. Using the wrong fuse will damage the unit and void the warranty.

WARNING

Use only a 3A fuse.

Use of a wrong fuse can result in equipment damage and void the warranty.

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