62 | Troubleshoot the radar
This appendix gives information on fixing possible problems with the radar. Many problems are
caused by:
• faulty or loose contacts at switches and relay points
• poor adjustment of the radar (particularly inadequate tuning adjustment)
• poor maintenance (particularly of the cables)
You'll save yourself a considerable amount of time if you check these items before placing a call
to Navico; plus, you may find the problem right away.
9.1 Technical support, service and repairs
The product is covered by a warranty which is supplied as a separate document.
If you need technical support or answers to other questions after you've followed the
instructions in this manual, you can:
• contact your Navico distributor or
• see the inside back cover of the manual or
• visit www.navico.com
Before you make contact, be sure to have:
• the serial number of the hardware (usually shown on the faceplate of the unit).
When you describe the problem, be as complete and as accurate as possible.
9.2 If the scanner fails to turn
If the scanner fails to turn, it is possible that there has been a breakdown of either the motor
unit inside the scanner or the safety switch of the scanner unit.
Turn the power OFF and investigate as follows:
• Visually check for, and remove, any external obstruction.
• Open the scanner dome or gearbox and perform an internal inspection.
• 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.
9 Troubleshoot the radar
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