Troubleshooting - Furuno Marine Radar Operator's Manual

5.3 Troubleshooting

Table 5-2 contains simple troubleshooting pro-
cedures which you can follow to try to restore
normal operation. If you cannot restore normal
operation, do not attempt to check inside any
unit of the radar system. Any repair work is best
left to a qualified technician.
If...
you pressed the
[POWER] key to
turn on the radar
the radar has
warmed up and you
pressed the
[STBY TX] key to
transmit
you have adjusted
the gain with A/C
RAIN and A/C SEA
off
a key is pressed
Table 5-2 Troubleshooting table
But...
the control panel
does not light
nothing appears on
the display or display
contrast is poor
characters are
distorted
the antenna does not
rotate
characters and
indications are
abnormal
neither noise nor
targets appear
(indications and
markers do)
neither indications nor
markers appear
(noise and targets do)
the sweep (radial line
sweeping around the
display) is not
synchronized with
antenna rotation
there is no change in
sensitivity
nothing happens
Then...
• try adjusting the control panel back-
lighting on the OTHERS menu.
• battery may have discharged.
• check fuse in power cable.
• try adjusting the brilliance.
• request service.
• the problem may be in antenna unit.
Request service.
• have a qualified technician check the
set.
• check signal cable for damage.
• check signal cable for damage.
• the problem may be in the antenna
unit. Request service.
• request service.
• key may be faulty. Request service.
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