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The navigator is almost maintenance free. There is, however, a f e w important
points to be noted.
Battery.
The internal real time clock and memory that keeps track of waypoints, alarm
limits etc is backed up by a lithium cell battery (Type
2
life time is
years.
ent of Backup Battery.
Be sure t o have the new battery a t hand. Suppliers will typical be your marine
or a
electronics dealer
The battery is placed at the back of the navigator unit (see figure 7). It is an
advantage t o have or just have had power on the unit (for 5 minutes), before
the battery is changed. This will give about three times the normal
t o make the change:
Dismount the navigator.
1.
2.
D-SUB and
Dismount the
the navigator.
3.
Remove the battery rubber lid from the back of the navigator using
or a blunt instrument.
4.
Remove the old battery.
5.
have a t least
the contents of the memory.
6.
Insert the new battery
tweezers, a rubber clove, a clear thin plastic back
place the battery. Do not use your fingers directly on the battery. Grease
from fingers might reduce the lifetime of
7.
Replace the rubber lid.
8.
Connect the cables (if dismounted).
9.
Remount the navigator.
shop.
radio
antenna cable
seconds to insert the
checking the right
if
necessary t o get to
new
battery without
polarity.
Use a pair of plastic
or
a similar tool to re-
the
battery severely.
Expected
50
seconds
the back of
coin
a
loosing
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