Heathkit SB-201 - Page 9

Page 8
Ge
guearHeitT
PROPER
SOLDERING
TECHNIQUES
Only
a
small
percentage
of
customers
find
it
neces-
sary
toreturn
equipment
for
factory
service.
By
far
the
largest
portion
of
malfunctions
in
this
equipment
are
due
to
poor
or
improper
soldering.
If
terminals
are
bright
and
clean
and
free
of
wax,
frayed
insulation
and
other
foreign
substances,
no
difficulty
will
be
experienced
in
soldering.
Correctly
soldered
connections
are
essential
if
the
performance
engineered
into
a
kit
is
to
be
fully
realized.
If
you
area
beginner
with
no
experience
in
soldering,
a
half
hour’s
practice
with
some
odd
lengths
of
wire
may
be
a
worthwhile
investment.
For
most
wiring,
a
25
to
100
watt
iron
is
very
satisfac-
tory.
A
lower
wattage
iron
than
this
may
not
heat
the
connection
enough
to
flow
the
solder
smoothly.
Keep
the
iron
tip
clean
by
wiping
it
from
time
to
time
witha
cloth.
CHASSIS
WIRING
AND
SOLDERING
1.
Unless
otherwise
indicated,
all
wire
used
is
the
type
with
colored
insulation
(hookup
wire).
In
preparing
a
length
of
hookup
wire,
1/4”
of
insu-
lation
should
be
removed
from
each
end
unless
directed
otherwise
in
the
assembly
step.
2.
To
avoid
breaking
internal
connections
when
stripping
insulation
from
the
leads
of
transfor-
mers
or
similar
components,
care
should
be
taken
not
to
pull
directly
on
the
lead.
Instead,
hold
the
lead
with
pliers
while
it
is
being
strip-
ped.
3.
Leads
on
resistors,
capacitors,
and
similar
com-
ponents
are
generally
much
longer
than
need
be
to
make
the
required
connections.
In
these
cases,
the
leads
should
be
cut
to
proper
length
before
the
part
is
installed.
In
general,
the
leads
should
be
just
long
enough
to
reach
their
ter-
minating
points.
4.
5.
Wherever
there
is
a
possibility
of
bare
leads
shorting
to
other
parts
or
to
the
chassis,
the
leads
should
be
covered
with
insulating
sleeving.
Where
the
use
of
sleeving
is
specifically
in-
tended,
the
phrase
“use
sleeving”’
is
included
in
the
associated
assembly
step.
In
any
case
where
there
is
the
possibility
of
an
unintentional
short
circuit,
sleeving
should
be
used.
Extra
sleeving
is
provided
for
this
purpose.
Crimp
or
bend
the
lead
(or
leads)
around
the
terminal
to
form
a
good
joint
without
relying
on
solder
for
physical
strength.
If
the
lead
is
too
large
to
allow
bending
or
if
the
step
states
that
it
is
not
to
be
crimped,
position
it
so
that
a
good
solder
connection
can
still
be
made.
Position
the
work,
if
possible,
so
that
gravity
will
help
to
keep
the
solder
where
you
want
it.
Place
a
flat
side
of
the
soldering
iron
tip
against
the
joint
to
be
soldered
until
it
is
heated
suffi-
ciently
to
melt
the
solder.