SOURCE: Ais and 1920c Furuno chart plotter
n the system setup, under “UNITS” I set
BEARING to “MAG” (magnetic). This will cause the unit to display course /
bearing information in relation to the Magnetic North and match magnetic
compass readings. It is not the same as True North! One has to be careful with
this setting. There are a number of areas where the earth's magnetic field is
locally disturbed, sometimes very significantly. Your GPS may not account for
it.
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again, under “UNITS” I set “METRIC”.
SOURCE: The chart plotter worked perfect for 5 yeas,
I think you have a C- Map card (black colour)clean the contacts with a contactcleaner if it not works try the card somewhere else
The C-Map card have problems that they work for a while and than stops inside the card a some memorychips and they losing contact
SOURCE: My Raymarine C80 CHart plotter won't load.
Check to see if this is a power issue by connecting to shore power and fully charging your batteries overnight with instruments off. While still connected to shore power, with batteries fully charged, turn on C80 navigation system. If the loading screen comes on and does not reset, then try holding down the button immediately to the right of the red power button for at least 3 seconds to see if the system re-boots.
Testimonial: "Factory reset solved the problem. Soft key next to power button worked a treat!"
SOURCE: Garmin3010c chart plotter nav system Is blinking
Perhaps your GPS receiver lost its satellites? Are you in a building, or close to high buildings?
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