Replacing The Fuse; Troubleshooting - Furuno 1715 Operator's Manual

2.2 Replacing the Fuse

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

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.
If...
you pressed the
[POWER/BRILL] key to turn on
the radar
the radar has warmed up and
you pressed the [MODE] key
to transmit
a key is pressed
the display freezes
CAUTION
Use the proper fuse.
Use of a wrong fuse may cause
serious damage to the equipment
and void the warranty.
Troubleshooting
But...
display contrast is poor
nothing appears on the display
the control panel does not light
the message "NO HEADING
PULSE" or "NO BEARING
PULSE" appears
neither noise or targets appear
(characters and markers do)
nothing happens
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2. MAINTENANCE, TROUBLESHOOTING
try adjusting LCD contrast.
(See page 4.)
battery may have
discharged; check battery.
check if fuse has blown.
adjust PANEL DIMMER on
page 1 of system menu.
check that the antenna cable is
firmly connected.
try adjusting gain, A/C SEA
and A/C RAIN.
check antenna cable for
damage.
key may be faulty. Contact
your dealer.
press the [POWER/BRILL] key
about five seconds to turn off
the power and then turn it on
again.
Then...