Furuno GP-3500 User Manual Page 174

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  • TROUBLESHOOTING
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11. MAINTENANCE & TROUBLESHOOTING
11-4
11.5 Simple Troubleshooting
This section provides simple troubleshooting procedures which the user can
follow to restore normal operation. If you cannot restore normal operation do not
attempt to check inside the unit. Any trouble should be referred to a qualified
technician.
General troubleshooting
If… Then…
check for blown fuse
check that the power connector is firmly fastened
check for damaged power cable.
check battery for proper voltage output.
you cannot turn on the power
press the [POWER] key a little harder.
no picture appears press the [BRILL] key for several times.
there is no response when a key
is pressed
turn off and on the power.
Plotter troubleshooting
If… Then…
check that antenna connector is firmly
fastened.
position is not fixed within 90 seconds
check number of satellites received, on the
GPS STATUS display.
check that the correct geodetic chart system
is selected on the NAVIGATOR SETUP menu.
position is wrong
enter position offset, on the NAVIGATOR
SETUP menu.
check that “1. ON” is selected at DISP
TRACKS (HOLD) in the MARKS/SHIP’S
TRACKS SETUP menu.
the track is not plotted
check that “1. ON” is selected at SHIP’S
TRACKS DISP in the MARKS/SHIP’S
TRACKS SETUP menu.
Loran C (or Decca) TDs are wrong
enter TD offset, on the PLOTTER SETUP
menu.
Loran C (or Decca) TDs are wrong enter TD offset, on the
Bearing is wrong
check the MAGNETIC VARIATION in the
DISPLAY SETUP menu.
The ship’s speed indication is not zero after
the ship is stopped
try to decrease speed/course smoothing.
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