Heathkit SW-717 Assembly page 33

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Refer
to
Pictorial 19
for
the
following
steps'
( )
connect the
1-1 12"
hookup
wire
from
lug
4
(S-1) to
( )
Prepare
the following
lengths
of yellow hookup
wire:
hole
O on the
circuit
board
(S-1).
( )
Connect the 2-314"
hookup
wire from
lug
6
{S-1)
to
hole
P
on
the circuit board (S-1).
( )
Connect the
4"
hookup wire
from
lug
8 (S-1) to
hole
R
on the
circuit
board (S-1 ).
( )
Connect the hookup wire coming
from hole
X on the
circuit
board
to
lug
21 (NS).
( )
Connect
the7"
hookup
wire from
lug 21
(S-2) to
the
terminal lug on variable capacitor G
(S-1),
( )
Inspect
the
connections
at
lug
21
carefully
to
make
sure
there is NO contact
between
them and the
three
adjacent solder
lugs.
( )
Connect
the hookup wire
coming
from lug
12
of water
#2 of
switch
C
to
hole M on the
circuit
board
(S-1).
The letter M may
be
partially
obscured
by the
edge
of
the
chassis.
Refer
to
Pictorial
21
for
the
following
steps.
)
Bend the
solder
lug
at
BS
and
lug
1
of control A
so
they touch
each
other.
lt
may
be
necessary
to
reposition the control.
)
Connect
a
20
pF
disc capacitor
from
lug 2
(NS) to
lug
1 (NS) of control
A.
)
Connect
a
1-1
14"
yellow hookup wire from
lug 2 of
control
A
(S-2) to
hole
GG in the circuit board
(S-1).
{ }
Connect one end
of
a
2"
yellow hookup wire to
hole
X
on the
circuit board (S-1). Position the
wire
between the switch and the
chassis.
The free end
will
be
connected later,
Wire the
lugs
on the front of
wafer
#2 of
switch C
as
follows:
( )
Connect
a
2-1
14" hookup wire
from lug 1 (S-1)
to
hole Y
on
the circuit
board
(S-1).
( )
Connect
the
1-1
12" hookup wire
from
lug
3 (S-1)
to
the
remaining hole
in foil
S
on
the circuit
board
(S-1).
( )
Connect a
2-1
14"
hookup wire from
lug 5
{S-1)
to the
remaining
hole in
foil
T
on
the circuit board (S'1
).
( )
Connect the
3-1
14" hookup wire
from
lug
7 (S-1)
to
the remaining
hole
in
foil
U on the
circuit
board (S-1
),
( )
Connect
the
4-1
14" hookup wire
from
lug
9
(S-1
)to
the
remaining
hole in
foil
W on
the circuit board (S-1).
( )
Connect
the
lead
at the positive
(+)
end
of a
10
pF
electrolytic
capacitor
to
lug 11 (S-1).
Connect
the
other
lead
of
the
capacitor
to
lug
12
on
the
gg
of
wafer
#2 (S-3).
Refer
to
Pictorial 20
for
the
following
steps.
{ )
Prepare
the following
lengths
of yellow
hookup wire:
1-1
/4"
1-112"
()
Refer
to
Detail
21A (on
Page
32) and
prepare a 5"
length
of
shielded cable
as
shown.
Connect end
A of
the cable
to control A
as
follows:
Shield lead
through
lug
1to
solder
lug
BS.
Solder
the connections.
Inner
lead
to
lug
3
(S-1
).
()
{ )
Connect
the free
cable
end
to
circuit board
hole
c
(s-1).
2"
2-1/4"
1-1
12"
2-1/4"
3-114"
4-114"
4"
7"
2-3/4"
Wire
the
lugs
on the rear
of
wafer
#2 of
switch
C as
follolrta:
( )
Connect
the 1-1l4"
hookup wire from
lug
2 (S-1)
to
hole N on the circuit
board
(S-1).
%o
2"
3"
4"
5" 6"