Page
16
SECTION
7
MAINTENANCE
AND
ACCESSORIES
BATTERY
CHARGING
The
battery
will
indicate
a
need
to
be
charged
by
one
of
2
ways.
1.
The
meter
next
to
the
power
on/off
switch
on
the
front
panel
of
the
electronics
package
is
in
the
red
position.
Charging
is
recommended
when
the
unit
is
not
in
use
and
the
meter
is
half
way
up
in
the
green
area.
2.
The
LEDs
on
the
meter
do
not
illuminate
when
the
unit
is
turned
on
and
it
will
not
detect
a
target.
If
there
is
some
deflection
in
the
battery
level
meter
when
the
unit
is
turned
on,
but
it
does
not
operate,
this
indicates
that
the
battery
has
discharged
to
a
level
below
operational.
To
charge
the
battery,
connect
the
charger
to
the
CHARGE
jack
on
the
rear
panel
of
the
NJD
‐
5's
electronics
package.
Plug
the
charger
into
an
AC
outlet.
The
charger
is
rated
for
110
‐
240
VAC
primary
voltage.
A
full
charge
will
be
made
in
6
hours.
Charging
for
more
than
8
hours
can
overcharge
the
battery
and
shorten
its
useful
life.
The
BOOMERANG™
is
designed
to
use
its
battery
as
the
primary
power
source.
The
BOOMERANG™
may
be
used
while
charging.
Extended
operation
using
the
external
charger/power
supply
will
damage
or
shorten
the
life
of
the
battery.
FUSE
REPLACEMENT
If
the
LEDs
on
the
antenna
meter
box
do
not
light
and
the
meter
cable
is
properly
connected
and
the
power
switch
is
on
the
ON
position,
check
the
fuse.
The
fuse
holder
is
located
on
the
rear
panel
of
the
NJD
‐
5
electronics
package
near
the
serial
number.
Spare
fuses
are
supplied
with
the
NJD
‐
5.
Fuse
is
2.5
amps,
Type
GMA
(5x20mm).
REPLACEMENT
OF
ANTENNA
CLOTH
COVERING
1.
Remove
the
old
covering
which
is
held
on
with
Velcro
strips.
Do
not
remove
the
Velcro
from
the
antenna
or
tamper
with
the
antenna
cover
plate.
2.
Install
the
new
covering.
Use
only
an
ISA
replacement
covering.
Some
cloth
material
may
contain
metallic
threads
and
will
affect
the
operation
of
the
BOOMERANG™.
