3. MAINTENANCE, TROUBLESHOOTING
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3.2 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 deal-
er for advice.
Trouble Remedy
The display shows “No radar” and radar does not
go into stand-by.
• Check if power is being supplied to the antenna
unit.
• Check if the power supply is the rated voltage
of the device (12/24 VDC)
• Check if the fuse (in the cable assy.) has
blown.
• Check all cables for damage.
• Check that the software version of the display
unit is compatible with the antenna unit.
The equipment goes into stand-by after start up.
However, no radar echoes appear after transmit-
ting. Then, radar echoes disappear and the mes-
sage "No radar" appears.
• Check the power supply voltage and capacity.
• Check that all cables are securely connected.
• Check all cables for damage.
In TX state, no echoes appear or echoes are
faint.
Check that tuning, gain, sea clutter, and rain clut-
ter are properly adjusted.
Echoes are faint even if the tuning is adjusted or
the sensitivity is increased.
The magnetron in the antenna unit may have de-
teriorated. Contact a FURUNO agent or dealer
about replacement of the magnetron.
Echoes appear only in some areas and are faint. • Check the sector blank settings.
• Check for obstructions around the antenna.
Echoes are displayed where there is no targets. False images can occur due to various factors.
Adjust the sensitivity, sea clutter, etc. appropri-
ately.
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