Heathkit SW-717 Assembly page 28

Use
the point of
a pen knife
to
open up one end
of
a
2"
length
of
metal braid. Slide this
end over the
capacitor mounting lug
at AU
(S-1
). Route
the
braid
under
the terminal strip
BF
to
point
BA on
the circuit
board
(S-1). Solder
the braid directly
to
the
foil.
Make
sure
this
braid does
not touch any
metal
on
the
terminal strip.
Use
the
point of
a pen knife
to
open up
one end
of
a
3"
length
of
metal
braid.
Slide
the
braid over
the
capacitor
mounting
lug
at
AT
(S-1 ). Solder
the other
end
of the
braid
to the three solder lugs
AN,
AP,
and
AR.
Use
the
point of
a pen knife
to
open up one end
of
a
1-3l4"
length
of
metal braid. Slide
the braid over lug
2
of
terminal
strip
X
on the rear
chassis
apron (S'1
L
Solder
the other end
of
the braid directly
to
the
circuit
board
foil
at
BB.
()
()
()
( )
Open up both ends
of a
1-1
14" leng6h
of
metal braid
with a knife point.
Slide one end
of
the
braid onto
solder lug
AF
(S-1
),
and
the
other end over
the solder
lug on
the
rear
of variable
capacitor G (S-1
).
14A
( )
Refer
to
Detail 14A
and
form
a
twisted
pair
from two
11"
lengths
of
red
stranded
wire.
Remove
114"
ot
insulation
from the
end
of
each
wire. Twist the fine
strands
together, and
melt
a
small amount
of solder on
the
ends
of
each
wire.
( )
Refer
to
Detail
148
and,
at
one end
of
the
twisted
pair,
connect one
wire
to
lug
4
(S-1) and the
other
wire
to
lug
5
(S-1) of control
B.
( )
At the other
end
of the twisted
pair, connect one
wire
to
lug
1
(NS) and
the other
wire
to
lug
2 (NS)
of (
)
terminal strip
AK,
Route these
wires
as
shown,
NOTE: When a wire passes
through
a
connection and then
goes
to
another
point,
as
in the next
step,
it will
count
as
two wires
in the
solder
instructions,
one entering and one
leaving
the connection.
),frk
Y
Detail 148
lf
this
receiver
will
be used
in
Canada,
these
instructions
for
wiring terminal strip AK
must
be
followed
to
comply with
Canadian standards.
So
the clearance between lugs
will not
be reduced,
all
leads
to
lugs 2
through
5
must
be wrapped
at the
top of
the solder
lug. Connections
to
lugs
'l
and 6
may
be
wrapped around
the
side
away
from
lugs
2 or
5.
LUGS
2
THROUGH
5
LUG
LUG
i
0R
6
2 0R
5
( )
Cut
a
2-1
14"
length
of
yellow hookup wire
and
remove
all the
insulation.
Save
the insulation
for
use
later.
( )
Push
the end
of
the hookup
wire
through lug 1 (S-2)
to
lug
2
(S-1
)
of
dual
trimmer capacitor
AH.
Connect
the other
end
of the wire
to
solder lug
AG (S-1
).
( )
Connect
a
22O
Q
(red-red-brown)
resistor
from
lug
1
(NS)
to
lug 2
(NS)
of terminal strip
BF.
TRANSISIOR
/./
#417-118
EMITTER*
LEAD
LEAD
CLIP
OFF
THIS
LEAD
AS
SHORT
AS
POSSIBLT
Detail t4C
Refer
to
Detail 14C and prepare
two
2N3393
(#417-11
8)
transistors
as
shown.
( )
Position one
of
these transistors
with the flat
side
toward
the
chassis,
Connect
the emitter lead
to
lug
3
(NS) and
the
base
lead
to
lug
4
(NS) of terminal strip
BF.
o
3/a
1"
2" 3"
4"
5r'
6"