Table of Contents
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b.
All
CMOS
devices
must be placed on
a grounded
bench surface and the technicians must ground
themselves
before handling the
devices. This
is
done most effectively by having the technician
wear a conductive wrist strap
in
series
with
a 100-
kilohm resistor
to
ground.
c. Do
not
wear
nylon clothing while handling
CMOS
circuits.
d.
Do
not insert or
remove
CMOS
devices
with
power
applied.
Check
all
power supplies
to
be used
for
testing
CMOS
devices,
and be certain that there
are
no
voltage transients present.
e.
When straightening
CMOS
device leads,
provide
ground straps
for
the apparatus used.
f.
When soldering, use a grounded soldering
iron.
g. All power must be turned
off
in
a system before
printed circuit
boards containing
CMOS devices
are inserted, removed,
or
soldered.
5.
REPAIR PROCEDURES
AND
TECHNIQUES
a.
Parts Replacement and Substitution
Special care
should be taken
to
be
as
certain
as
possible that
a
suspected component
is
actually the
one
at fault.
This special care
will
eliminate
unneces-
sary unsoldering
and removal
of
parts, which could
damage
or
weaken
other components or the printed
circuit board
itself.
When damaged
parts are replaced, identical parts
should be used.
If
the identical replacement compo-
nent is
not
locally available,
check
the parts
list for the
proper Motorola part number and order the compo-
nent from the nearest Motorola
Communications Parts
office listed
in
the
"Replacement Parts Ordering" sec-
tion of this
manual.
b.
Rigid Circuit Boards
The
SABER
radio
uses
bonded multi-layer printed
circuit boards.
Since
the inner
layers are
not
accessi-
ble, some special considerations are required when
soldering and unsoldering components. The
printed
18
through holes may interconnect multiple
layers
of the
printed circuit.
Therefore, care should
be
exercised
to
avoid pulling the plated circuit
out of the hole.
When soldering near
the module
socket pins, use
care
to
avoid accidentally getting solder
in
the
socket.
Also,
be careful
not to form
solder bridges between
the module
socket
pins.
Closely examine
your work
for
shorts due
to
solder bridges.
c. Flexible Circuits
The flexible circuits
are made
from a
different
material than the rigid boards, and different
tech-
niques must be used when soldering.
Excessive
pro-
longed heat
on
the
flexible circuit can damage the
material. Avoid
excessive
heat and
excessive
bend-
ing.
For parts replacement, use the (Motorola
part
number)
0180382A38 Temperature-Controlled Solder
Station
with
a 600
or
700 degree
tip,
and
use small
diameter solder such as (Motorola
part number)
1010041A60. The smaller size solder
will melt
faster
and require
less
heat being applied
to
the circuit.
To
replace a component
on
a flexible
circuit,
grasp
the
edge
of the
fiexible circuit
with
seizers
near the
part to be removed, and pull gently.
Apply the
tip of
the soldering
iron to
the component
connections while
pulling with the
seizers.
Do
not attempt to
puddle out
components. Prolonged application
of
heat may dam-
age
the flexible circuit.
6.
TEST
EQUIPMENT AND
SERVICE
AIDS
The
following paragraphs describe the test equip-
ment and
service aids
required
for
maintaining the
SABER
radio.
Your Motorola
sales
representative
will
assist
in
analyzing
your
specific requirements
and
help you
select
the latest
available equipment
to
suit
your individual needs.
In
addition, your
sales
repre-
sentative can advise you
of the
availability
of
new test
equipment and
service aids
that become
available
after the printing of this manual.
CAUTION
Leadiess
component technology requires the
use of specialized
equipment and procedures for
repair and servicing of the
SABER
radio.
If
you
are not totally familiar
with
leadless component
repair techniques,
it
is strangly recommended
that you either defer maintenance to qualified
service
personnel and
service shops
or
take the
recommended video taped leadiess component
repair training program,
MAV-PACK
3 (VID-952}
{see paragraph 6b,
Service Alds
and
Recommended Tools,
in
this section).
This
is
very
important
since
irreparable
damage
to
the
radio
can result
from
service
by unauthorized
persons. Unauthorized attempts
to
remove or
repair parts may void
any existing warranties or
extended performance agreements
with the
manufacturer.
Refer
to
Figure
4 for an
illustration
of
the trou-
bleshooting, programming, and test equipment setup.
a.
Recommended Test Equipment
The
list of
equipment contained
in
Table 2 includes
all
the
standard test equipment required
for
servicing
two-way portable radios,
and
several
unique items
designed specifically
for
servicing
the
SABER
radio.
Battery-operated test equipment
is
recommended when
available. The
"CHARACTERISTICS"
column is includ-
ed so that equivalent equipment may be substituted;
however, when
no
information is provided
in
this col-
umn, the
specific
Motorola model listed is either a
unique
item or no
substitution is recommended.
b.
Service Aids
and Recommended
Tools
Refer
to
the appropriate vhf
or uhf
service
manual
("SERVICE
AIDS"
and
"RECOMMENDED TOOL
LIST")
for
a
listing and description of the
service aids
and
tools designed specifically
for
servicing
the
SABER
radio, and the more common tools required
to
b.
All
CMOS
devices
must be placed on
a grounded
bench surface and the technicians must ground
themselves
before handling the
devices. This
is
done most effectively by having the technician
wear a conductive wrist strap
in
series
with
a 100-
kilohm resistor
to
ground.
c. Do
not
wear
nylon clothing while handling
CMOS
circuits.
d.
Do
not insert or
remove
CMOS
devices
with
power
applied.
Check
all
power supplies
to
be used
for
testing
CMOS
devices,
and be certain that there
are
no
voltage transients present.
e.
When straightening
CMOS
device leads,
provide
ground straps
for
the apparatus used.
f.
When soldering, use a grounded soldering
iron.
g. All power must be turned
off
in
a system before
printed circuit
boards containing
CMOS devices
are inserted, removed,
or
soldered.
5.
REPAIR PROCEDURES
AND
TECHNIQUES
a.
Parts Replacement and Substitution
Special care
should be taken
to
be
as
certain
as
possible that
a
suspected component
is
actually the
one
at fault.
This special care
will
eliminate
unneces-
sary unsoldering
and removal
of
parts, which could
damage
or
weaken
other components or the printed
circuit board
itself.
When damaged
parts are replaced, identical parts
should be used.
If
the identical replacement compo-
nent is
not
locally available,
check
the parts
list for the
proper Motorola part number and order the compo-
nent from the nearest Motorola
Communications Parts
office listed
in
the
"Replacement Parts Ordering" sec-
tion of this
manual.
b.
Rigid Circuit Boards
The
SABER
radio
uses
bonded multi-layer printed
circuit boards.
Since
the inner
layers are
not
accessi-
ble, some special considerations are required when
soldering and unsoldering components. The
printed
18
through holes may interconnect multiple
layers
of the
printed circuit.
Therefore, care should
be
exercised
to
avoid pulling the plated circuit
out of the hole.
When soldering near
the module
socket pins, use
care
to
avoid accidentally getting solder
in
the
socket.
Also,
be careful
not to form
solder bridges between
the module
socket
pins.
Closely examine
your work
for
shorts due
to
solder bridges.
c. Flexible Circuits
The flexible circuits
are made
from a
different
material than the rigid boards, and different
tech-
niques must be used when soldering.
Excessive
pro-
longed heat
on
the
flexible circuit can damage the
material. Avoid
excessive
heat and
excessive
bend-
ing.
For parts replacement, use the (Motorola
part
number)
0180382A38 Temperature-Controlled Solder
Station
with
a 600
or
700 degree
tip,
and
use small
diameter solder such as (Motorola
part number)
1010041A60. The smaller size solder
will melt
faster
and require
less
heat being applied
to
the circuit.
To
replace a component
on
a flexible
circuit,
grasp
the
edge
of the
fiexible circuit
with
seizers
near the
part to be removed, and pull gently.
Apply the
tip of
the soldering
iron to
the component
connections while
pulling with the
seizers.
Do
not attempt to
puddle out
components. Prolonged application
of
heat may dam-
age
the flexible circuit.
6.
TEST
EQUIPMENT AND
SERVICE
AIDS
The
following paragraphs describe the test equip-
ment and
service aids
required
for
maintaining the
SABER
radio.
Your Motorola
sales
representative
will
assist
in
analyzing
your
specific requirements
and
help you
select
the latest
available equipment
to
suit
your individual needs.
In
addition, your
sales
repre-
sentative can advise you
of the
availability
of
new test
equipment and
service aids
that become
available
after the printing of this manual.
CAUTION
Leadiess
component technology requires the
use of specialized
equipment and procedures for
repair and servicing of the
SABER
radio.
If
you
are not totally familiar
with
leadless component
repair techniques,
it
is strangly recommended
that you either defer maintenance to qualified
service
personnel and
service shops
or
take the
recommended video taped leadiess component
repair training program,
MAV-PACK
3 (VID-952}
{see paragraph 6b,
Service Alds
and
Recommended Tools,
in
this section).
This
is
very
important
since
irreparable
damage
to
the
radio
can result
from
service
by unauthorized
persons. Unauthorized attempts
to
remove or
repair parts may void
any existing warranties or
extended performance agreements
with the
manufacturer.
Refer
to
Figure
4 for an
illustration
of
the trou-
bleshooting, programming, and test equipment setup.
a.
Recommended Test Equipment
The
list of
equipment contained
in
Table 2 includes
all
the
standard test equipment required
for
servicing
two-way portable radios,
and
several
unique items
designed specifically
for
servicing
the
SABER
radio.
Battery-operated test equipment
is
recommended when
available. The
"CHARACTERISTICS"
column is includ-
ed so that equivalent equipment may be substituted;
however, when
no
information is provided
in
this col-
umn, the
specific
Motorola model listed is either a
unique
item or no
substitution is recommended.
b.
Service Aids
and Recommended
Tools
Refer
to
the appropriate vhf
or uhf
service
manual
("SERVICE
AIDS"
and
"RECOMMENDED TOOL
LIST")
for
a
listing and description of the
service aids
and
tools designed specifically
for
servicing
the
SABER
radio, and the more common tools required
to
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