2. MAINTENANCE, TROUBLESHOOTING

2.2 Replacing the Fuse

The fuse (5 A) in the power cable protects the equipment against reverse polarity of ship’s mains, overcurrent, and equipment fault. If the fuse blows, find the cause before replacing it.

CAUTION

Use the proper fuse.

Use of a wrong fuse may cause serious damage to the equipment and void the warranty.

2.3 Troubleshooting

The table below provides simple troubleshooting procedures which the user can follow to restore normal operation. If you cannot restore normal operation contact your dealer for advice.

Troubleshooting

If…

But…

Then…

you pressed the

nothing appears on the

• try adjusting LCD contrast.

[POWER/BRILL] key to turn on

display or display contrast

• battery may have discharged.

the radar

is poor

• check if fuse has blown.

 

 

 

 

the control panel does not

adjust PANEL DIMMER on the

 

light

User menu.

 

 

 

the radar has warmed up and

the message “NO

check that the antenna cable is

you pressed the [MODE] key to

HEADING PULSE” or “NO

firmly connected.

transmit

BEARING PULSE”

 

 

appears

 

 

 

 

 

neither noise or targets

try adjusting gain, A/C SEA and

 

appear (characters and

A/C RAIN.

 

markers do)

check signal cable for damage.

 

 

 

a key is pressed

nothing happens

key may be faulty. Contact your

 

 

dealer.

 

 

 

the display freezes

 

Press the [POWER/BRILL] key

 

 

about five seconds to turn off the

 

 

power and then turn it on again.

 

 

 

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Furuno 1623 manual Replacing the Fuse, Troubleshooting, If… But… Then…