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24. MAINTENANCE AND TROUBLESHOOTING
24-6
Chart troubleshooting
If… then… Remedy
the message "No con-
nection to dongle" ap-
pears
• dongle is not connected to USB
port.
• Connect dongle.
the message "There is
no dongle or an error
has occurred in the
dongle. The system will
automatically shut
down." appears
• dongle is not connected.
• data in the dongle is corrupted.
• Connect dongle.
• Contact FURUNO for assistance.
monitored route is not
displayed
• route has not been selected.
• monitor route has not been se-
lected to be visible above the
chart.
• Select route to monitor.
• Open the [Route] page of the
[Symbol Display] menu and check
the monitored route parts to show.
planned route is not
displayed
• route has not been selected.
• planned route has not been se-
lected to be visible above the
chart.
• Select route as “planned”.
• Open [Route] page of [Symbol Dis-
play] menu and check the planned
route parts to show.
route monitoring is
stopped
• Alert 691: RM Stop - Exceed
Max XTE. Own ship is too far
away from the route.
• Alert 692: RM Stop - No Valid
Sensor Data. Chart radar inter-
nal error.
• Alert 693: RM Stop - Other
Causes. Required data (posi-
tion, SOG/COG) not found.
• Steer the ship back to the route
then restart route monitoring.
• Request service.
• Check sensor connections.
symbol of user chart
cannot be erased
• two or more symbols may be
superimposed on each other.
• Do the delete action several times.
position cannot be
found
• position sensor(s) is not select-
ed on the [POSN] page.
• position sensor is turned off.
• sensor cable has loosened.
• Check position sensor selections.
• Turn on position sensor.
• Check cable.
S57 chart cannot be
displayed
• No ENC chart for area.
• Dongle not connected.
• Open S57 chart from [Manage
Charts] dialog box
• Connect dongle.
past track is not
displayed
• past track is not selected to be
visible.
• Open [Tracking] page of [Symbol
Display] menu and select [Own
Ship Past Tracks] to [Primary] or
[Secondary] as appropriate.
monitored user chart is
not displayed on chart
display
• user chart is not selected to be
visible.
• Open [Mariner] page of [Symbol
Display] menu and select parts to
show.
user chart is not dis-
played on radar display
• user chart is not selected in
Voyage navigation mode.
• Select user chart in Voyage navi-
gation mode.
the message "Nearing
memory usage limit.
Click the Restart button
to restart the system to
prevent trouble." ap-
pears
• the memory usage limit for soft-
ware is close to capacity. Per-
formance may be affected.
If you need to save your work, click
the [Later] button then restart the
equipment. If you don't need to save
your work, click the [Restart] button.