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Heathkit SB-220
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23
p:*--=.:m1
PICTORIAL
3-3
(
/
)
Prepare the following lengths of hookup wire:
3-1 12"
black
18"
brown
3-1 12"
red
18"
brown
30"
green
Refer to Pictorial
3-3
for the following steps.
Connect a
3-112"
length of red wire from lug
1
(marked
t
on the case) of meter EC
(S-2)
to lug
4
of
rotary switch EU
(S-I
).
(\/J
Connect an
18"
length of brown wire to lug
3
of
terminal strip
EB
6-4).
(d
Connect an
18"
length of brown wire to lug
1
of
terminal strip
EB
6-4).
(
4
Connect a
30"
length of green wire to lug
3
of control
ET
(S-I).
(d
Remove an additional
ID"
of insulation from one end
(
r/r
Gather the green wire and the two brown wires and
of the
3-112"
black wire. Pass this end through lug
1
twist them together approximately one turn per inch.
of control ET
6-21
and wrap
it
around the control
solder lug
(S-I
1.
Connect the other end of this black
Set the front panel assembly aside until
it
is
required in later
wire to lug
2
of meter EC
(S-2).
steps.

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