Heathkit SB-201 - Circuit Board Assembly

Page 12
Ge
gues
tHxiT:
STEP-BY-STEP
ASSEMBLY
CIRCUIT
BOARD
ASSEMBLY
|
(|)
Locate
the
circuit
board
and
position
it
as
shown
in
Pictorial
1;
then
complete
the
steps
around
this
Pictorial.
Be
sure
to
read
Page
10
of
the
manual
before
beginning
assembly
of
the
kit.
-
(\)
Install
sixteen
silicon
diodes.
Position
the
banded
end
of
each
diode
as
shown.
Sol-
der
and
cut
off
the
excess
leads
except
the
indicated
lead
of
the
first
diode.
IMPORTANT:
THE
BANDED
END
OF
DIODES
CAN
BE
MARKED
IN
A
NUMBER
OF
WAYS.
BANDED END
i
{
|
as
(|)
Install
the
six
30
kM
(30,000
2)
7
watt
resistors.
Use
the
500
wyf
mica
capacitor
as
a
temporary
spacer
between
each
re-
sistor
and
the
circuit
board.
Solder
and
cut
off
the
excess
leads
as
each
resistor
is
installed.
Space
these
resistors
so
they
do
not
touch
the
electrolytic
capacitors,
the
circuit
board
or
each
other.
—
(
)
Install
the
700
7
watt
resistor,
using
the
500
pyf
mica
capacitor
as
a
temporary
pacer
between
the
resistors
and
circuit
board.
Solder
and
cut
off
the
excess
leads.
(
f)
In
a
like
manner,
install
the
1
2
5
watt
precision
resistor,
using
the
game
capacitor
as
a
spacer,
Solder
=
cut
off
the
excess
leads,
(
\}
Install
the
3600
&
1/2
watt
precision
resistor,
Solder
and
cut
off
the
ex-
ss
leads,
CUT
THIS
LEAD
T0
APPROXIMATELY
1/2"
LONG.
—— oad
J
(*
Install
the
six
125
ufd
electrolytic
capacitors,
Position
the
center
lug
in
the
large
center
hole
and
the
four
other
lugs
in
outside
holes
in
the
circuit
board
for
each
capacitor,
Bend
the
center
lugs
over
against
the
foil
and
twist
the
outside
lugs
1/8
turn.
Solder
all
lugs
which
extend
through
foil,
ZFoil side of
-eireuit board
>