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DIAGNOSTIC
The GEONAV features a diagnostic program to verify its cor-
rect performance, once installed, and to detect problems that
may occur during the use of the unit.
To access the diagnostic program, keep pressed any key but
CLR, while pressing the PWR key.
The GEONAV will switch on and carry out automatically a
test of the whole system; as soon as the memory test is com-
pleted, the program will test the LCD, the CompactFlash™
card and the keyboard. Press ENTER to run one test, CLR to skip
to the next one. To exit from the keyboard test, press CLR
twice.
Once the keyboard test is completed, the diagnostic program
allows checking the messages received from the GPS through
the NMEA 0183 port. Hold the knob pressed to freeze the
messages on the screen, then release it to keep on displaying
the new messages sent by the GPS. To test channel 1 (depth
sounder or wind instrument), press GOTO. Press CLR to quit.
After the keyboard, the diagnostic program will test the inter-
nal non-volatile memory and the backlight. Press ENTER to run
one test, CLR to skip to the next one.
Once terminated all tests, press ENTER to re-boot the unit.
WARNING: The internal memory can be cleared by pressing simultaneously the
PWR and CLR keys. This operation will delete all the settings stored in the GEONAV
and restore factory settings.
NOTE: In case of damaged cartridge or abnormal power spikes, the unit might lock,
requiring a power shutdown to restart. In that case, the unit can be turned off without
the need of detaching the power, by simply holding the PWR key pressed for more
than 10 seconds. This function is useful if the unit is panel mounted or flush mounted
and the power switch cannot be easily accessed.
Diagnostic