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5-2. Antenna System Check
Since the antenna is exposed to direct sunlight and salt water spray, it is subject to corrosion or salt water
immersion at the antenna base. Physical damage, such as a crack, may occur under heavy ship's
vibration. If cracks or water immersion is found, contact FURUNO dealer for servicing.
5-3. Battery Check
The FM-2710 operates normally at any voltage between 11 and 15 VdC. If the battery voltage is out of
ratings, check the battery liquid and the charging system of your boat. Check also rust or corrosion at the
battery terminals and the ship's mains switch-board for poor contact.
To protect the transceiver from serious dam-
age, a 10A fuse is provided in the snap-in
fuse holder onthe power cable. The fuse
protects against over-voltage/reverse polar-
ity of the ship's mains or internal fault of the
equipment. If the fuse has blown, first find
the cause of the problem before replacing it.
CAUTION
Use the correct fuse.
Use of the wrong fuse can cause fire
or equipment damage.
5-4. Fuse Replacement