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7. MAINTENANCE, TROUBLESHOOTING
7-5
7.4.3 Plotter
Requires GPS Receiver GP-310B.
Plotter troubleshooting
If… Then…
position is not fixed within
three minutes
! check that antenna connector is firmly fastened.
! Check the satellites numbers received, on the GPS status display (GPS
SENSOR SETTINGS menu, GPS STATUS key see page 7-11).
position is wrong
! check that the correct geodetic chart system is selected, on the GPS SENSOR
SETTINGS menu.
! enter position offset on the GPS SENSOR SETTINGS menu.
track is not plotted
! plotting has been stopped. (“H” icon appears at the top of the display.) Press the
TRACK HALT soft key on the TRACKS & MARKS CONTROL menu to start
plotting again.
bearing is wrong
! check that correct magnetic variation is entered, on the GENERAL SETUP
menu.
Loran C (or Decca) TDs do
not appear
! check that LORAN C (or DECCA) is selected at TD DISPLAY on the GENERAL
SETUP menu. Also, check that proper Loran C (Decca) chains codes are
entered, on the TD SETUP menu.
Loran C TDs are wrong ! enter TD offset on the TD SETUP menu.
ship’s speed indication is
not zero after the ship is
stopped
! try to decrease speed/course smoothing on the GPS SENSOR SETTINGS
menu.