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3.2 Replacing the Fuse
The 3 A fuse in the snap-in fuse holder on the power cable protects the equipment from
equipment fault and reverse polarity of the ship’s mains. If the fuse blows find out the cause
before replacing it. If the fuse blows again after replacement, contact a FURUNO agent or
dealer for advice. If the LED lamp on the front panel does not light, the 4 A fuse inside the
network sounder may have blown. In the case, contact a FURUNO agent or dealer for
advice.
CAUTION
Use the correct fuse.
Use of a wrong fuse can cause fire or
equipment damage.
3.3 LED Lamp
The green LED lamp on the front panel lights or flashes according to equipment stats.
When a radar or plotter is OFF, or the network sounder is not connected to a radar or
plotter, the LED lamp flashes for 3 minutes and then lights continuously. When a radar or
plotter is ON, the LED lamp flashes continuously.
LED lamp
Lighting (after flashing 3 minutes):
A radar or plotter is OFF or the net cable is disconnected or damaged.
Flashing:
The network sounder works with a radar or plotter.
Figure 3-2 LED lamp