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Heathkit TA-16 - Chassis Bottom Wiring

Heathkit TA-16
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Page
20
CHASSIS
BOTTOM
WIRING
Refer
to
Pictorial
11
for
the
following
steps.
NOTE:
When
wiring
to
the
foil
side
of
the
circuit
board,
do
not
push
the
insulation
of
the
wire
down
tightly
against
the
foil.
Always
leave
about
1/8"
of
the
bare
wire
end
exposed
to
insure
a
good
solder
connection
to
the
foil
and
wire.
(
.)
Prepare
the
following
lengths
of
colored
hookup
wire.
2"
brown
7"
yellow
19"
large
black
( )
Connect
a
2"
brown
wire
between
lugs
1
(S-1)
and
4
(NS)
of
double
phono
socket
E.
)
Connect
a
7" yellow
wire
from
lug
2
of
phono
socket
E
(S-1)
to
hole
H
in
the
circuit
board
(S-1).
( )
At
the
free
end
of
the
coaxial
cable
extend-
ing
from
hole
P,
connect
the
inner
lead
to
lug
3
(S-1)
and
the
shield
lead
to
lug
4
(S-2)
of
double
phono
socket
E.
(
_,)'Route
the
wires
that
extend
from
grommet
L
around
the
chassis
edge
as
shown.
( )
At
the
free
end
of
the
coaxial
cable
extend-
ing
from
grommet
L,
connect
the
inner
lead
to
hole
P
(S-1)
and
the
shield
lead
to
hole
N
(S-1)
in
the
circuit
board.
Connect
the
free
ends
of
each
of
the
remaining
wires
extending
from
grommet
L
to
the
cir-
cuit
board
as
follows:
WIRE
COLOR
( )
White
( )
Yellow
)
Red
(
/)/
Orange
(./Brown
( )
CONNECT
TO
HOLE
L
(S-1).
M
(S-1).
K
(S-1).
AH
(S-1).
W
(S-1).
Connect
a
19"
large
black
wire
from
hole
J
in
the
circuit
board
(S-1)
to
solder
tab
J
(NS).
6-32x3/8"
SCREW
PLASTIC
CABLE
CLAMP
#6
LOCKWASHER
6-32
NUT
INSIDE
OF
CHASSIS'
Detail
11F
-)
Slide
a
plastic
cable
clamp
over
all
of
the
wires
at
N.
Secure
the
cable
clamp
to
the
chassis
with
6-32
x
3/8"
hardware
as
shown
in
Detail
11F.
( )
Similarly,
place
a
plastic
cable
clamp
over
all
of
the
wires
at
R.
Secure
the
cable
clamp
to
the
chassis
with
6-32
x
3/8"
hardware.
Connect
the
free
ends
of
each
of
the
wires
ex-
tending
from
grommet
M
as
follows:
WIRE
COLOR
CONNECT TO
( )
Red
( )
Large
red
(-4
Large
black
lug
1
of
terminal
strip
G
(NS).
lug
2
of
terminal
strip
G
(NS).
lug
3
of
terminal
strip
G
(NS).
( )
Brown-yellow
twisted
pair:
( )
( J
Brown
Yellow
lug
1
of
AC
socket
B
(NS).
lug
2
of
AC
socket
B
(NS).
Brown-red
twisted
pair:
Brown
Red
lug
1
of
circuit
breaker
X
(S-1).
lug
1
of
terminal
strip
H
(NS).
Prepare
the
following
lengths
of
colored
hookup
wire:
2-1/2"
brown
2"
yellow
2-1/2"
brown
2"
red
1-1/2"
black
6"
red
2"
yellow
3"
red
1-1/2"
black

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