Navico 2kW, Installation Manual

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68 | Troubleshoot the radar
•
Check to make sure that nothing is interfering with the motor and gears, is binding or
preventing the antenna from turning.
•
Check for any disconnected, pinched or broken wires.
•
Check for worn or broken motor brushes (open scanners only).
•
Verify that the scanner cable is correctly pinned, all wires are in the correct locations and
the connectors are correctly locked to the mating connectors on the modulator board.
•
Check the motor and replace any faulty component. (See the Service Manual for
information on replacing the motor)
• Check the wiring of the interconnection cable between the scanner and the radar
processor.
•
Checking these connections is especially important if the installer removed the connectors
for easy routing when installing the scanner cable.
10.4 How to reduce noise and interference
If other electronic equipment on the vessel is being affected by noise interference from the
radar, check that the radar is actually the source of the problem by switching it off, running the
other electronic equipment for a while to see if the noise interference has disappeared, and then
switching the radar on again.
If the radar is causing the noise interference, check that:
• the affected piece of equipment and/or the antenna is not located within the radar beam.
(
For information about the optimum installation height and the radar beam width
(see "Install the
radar" page 9),).
• the cables supplied with the equipment have been installed correctly. In particular, check
for loose connections and loose or missing shield meshwork at the cable ends.
•
the covers of the scanner and radar processor box are securely screwed and/or fastened
in place, so that the internal shielding is effective.
•
each piece of radio equipment is grounded to the closest ground location, and that other
devices are grounded to the closest ground location on the hull.
• the radar cabling has not been bundled with the VHF radio cabling and/or with the
direction finder cabling. The radar cabling must always be separate.
10.5 Make sure the power is present and correctly wired
Check the in-line fuse.
Re-verify that the correct system voltage is being used for the radar processor box model and
that the power is properly wired. If the radar processor has incorrect power, the system may
not initialize properly or the radar processor may be damaged.