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b.
Whenever possible,
avoid
touching
any
electrically conductive part
of
the unit
with your
hands.
c.
When servicing
a unit, avoid
carpeted areas,
dry environments, and
certain types
of
clothing
(silk, nylon,
etc.) because they
contribute to
static
buildup.
d.
All
electrically powered
test
equipment should
be grounded. Apply
the ground
lead from
the
test
equipment to the unit before connecting the
test
probe. Similarly,
disconnect the
test
probe prior to
removing the ground lead.
e.
If
the microphone cartridge
is removed from
the
unit,
place
it on a
conductive
surface, such as
a
sheet
of aluminum
foil
which is connected to
ground through
100k
ohms
of
resistance.
WARNING
If
the aluminum
foil
is
connected directly to ground,
be
cautious
of
possible electrical shock from contacting
the
foil
at the same time as other electrical circuits.
f.
When
soldering,
be-sure
the soldering
iron
is
grounded.
g.
Prior
to
replacing circuit components
or
touching the microphone cartridge,
be
sure to
discharge
any
static
buildup.
Since voltage
differences can exist
across
the human
body,
it is
recommended that
only
one hand be used
ff
it
is
necessary to
touch the microphone
cartridge
and
associated
wiring.
h.
Replacement microphone cartridges
should be
kept
in
conductive packaging
until
they are placed
in
the
unit.
5S.
MAINTENANCE
Refer to the schematic diagram, the
exploded
view, and
the
parts lists.
Every part
in
the
microphone is identified
and
illustrated for
assistance
in
removal and replacement.
If
disassembly
of
the remote
speaker
microphone
is
required,
do
not
reassemble
it
without doing the following (numbers
in
parentheses refer
to item numbers
in
the
exploded view.
e
Remove the O-Ring
(14)
from the
cover
assembly (8).
e
Inspect the seal areas around the housing
(1)
and
the cover (8) for foreign material
which might prevent the O-ring from
sealing property.
e
Inspect
O-ring
(14)
and both
cover screw
O-rings
(10).
If
any
of
these are split,
cracked, or damaged
in
any way,
discard
and
replace them.
e
lf
the
main printed
circuit
board
(3)
is
removed, remove the speaker
spacer
(19)
and
inspect the membrane
of
the seal
pad
(20}
for
tears
or holes.
If
the membrane
is
damaged, remove
it, being
careful
to
remove
all old
adhesive,
and
replace
it
with
a
new seal pad.
NOTE
When
placing the seal pad
(20),
it is
critical
that the
small seal pad opening
be aligned
with
the microphone port
in
the housing.
¢
Tighten
all
hardware loosened or removed
during
disassembly per the values
listed
in
the Torque Specifications table. Use the
recommended torque driver
(RSX-4043A
Rototorq
Tool
or equivalent).
TORQUE SPECIFICATIONS
TORQUE
TORQUE
APPLICATION
BIT NO.
(IN.
LBS.)
Back Cover
Screws
6680321878
PC Board
Screws
6680321B78
6680321B78
Pocket
Clip
Screw
Antenna Adapter
10
6680370B90
Accessory
Connector
Mounting
Screw
6680321B78
6
4
4
4
If
necessary, the external surfaces
of
the
remote speaker microphone may
be
cleaned with
0.5%
solution of
mild
dishwashing detergent
in
water
(one teaspoon
of
detergent
in
a gallon of
water).
2
b.
Whenever possible,
avoid
touching
any
electrically conductive part
of
the unit
with your
hands.
c.
When servicing
a unit, avoid
carpeted areas,
dry environments, and
certain types
of
clothing
(silk, nylon,
etc.) because they
contribute to
static
buildup.
d.
All
electrically powered
test
equipment should
be grounded. Apply
the ground
lead from
the
test
equipment to the unit before connecting the
test
probe. Similarly,
disconnect the
test
probe prior to
removing the ground lead.
e.
If
the microphone cartridge
is removed from
the
unit,
place
it on a
conductive
surface, such as
a
sheet
of aluminum
foil
which is connected to
ground through
100k
ohms
of
resistance.
WARNING
If
the aluminum
foil
is
connected directly to ground,
be
cautious
of
possible electrical shock from contacting
the
foil
at the same time as other electrical circuits.
f.
When
soldering,
be-sure
the soldering
iron
is
grounded.
g.
Prior
to
replacing circuit components
or
touching the microphone cartridge,
be
sure to
discharge
any
static
buildup.
Since voltage
differences can exist
across
the human
body,
it is
recommended that
only
one hand be used
ff
it
is
necessary to
touch the microphone
cartridge
and
associated
wiring.
h.
Replacement microphone cartridges
should be
kept
in
conductive packaging
until
they are placed
in
the
unit.
5S.
MAINTENANCE
Refer to the schematic diagram, the
exploded
view, and
the
parts lists.
Every part
in
the
microphone is identified
and
illustrated for
assistance
in
removal and replacement.
If
disassembly
of
the remote
speaker
microphone
is
required,
do
not
reassemble
it
without doing the following (numbers
in
parentheses refer
to item numbers
in
the
exploded view.
e
Remove the O-Ring
(14)
from the
cover
assembly (8).
e
Inspect the seal areas around the housing
(1)
and
the cover (8) for foreign material
which might prevent the O-ring from
sealing property.
e
Inspect
O-ring
(14)
and both
cover screw
O-rings
(10).
If
any
of
these are split,
cracked, or damaged
in
any way,
discard
and
replace them.
e
lf
the
main printed
circuit
board
(3)
is
removed, remove the speaker
spacer
(19)
and
inspect the membrane
of
the seal
pad
(20}
for
tears
or holes.
If
the membrane
is
damaged, remove
it, being
careful
to
remove
all old
adhesive,
and
replace
it
with
a
new seal pad.
NOTE
When
placing the seal pad
(20),
it is
critical
that the
small seal pad opening
be aligned
with
the microphone port
in
the housing.
¢
Tighten
all
hardware loosened or removed
during
disassembly per the values
listed
in
the Torque Specifications table. Use the
recommended torque driver
(RSX-4043A
Rototorq
Tool
or equivalent).
TORQUE SPECIFICATIONS
TORQUE
TORQUE
APPLICATION
BIT NO.
(IN.
LBS.)
Back Cover
Screws
6680321878
PC Board
Screws
6680321B78
6680321B78
Pocket
Clip
Screw
Antenna Adapter
10
6680370B90
Accessory
Connector
Mounting
Screw
6680321B78
6
4
4
4
If
necessary, the external surfaces
of
the
remote speaker microphone may
be
cleaned with
0.5%
solution of
mild
dishwashing detergent
in
water
(one teaspoon
of
detergent
in
a gallon of
water).
2
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