Heathkit IG-4505 - Page 29

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Page 29
CHASSIS WIRING-Continued
Refer to Pictorial 2-8 in the Illustration Booklet for the
following steps.
(_ ) R105: Connect a 27 kQ (red-violet-orange) resistor
from pilot lamp PL101 lug 1 (S-2) to switch SW101
lug 1 (S-2).
(_) Place the 1-1/2’ length of large clear sleeving over the
3/16-ampere fuse.
( ) F101: Connect the 3/16-ampere slow-blow fuse from
terminal strip AF lug 4 (S-2) to switch SW101 lug 2
(S-1). Make sure the fuse leads do not touch any other
Jugs or parts.
( ) Write ‘3/16-ampere slow-blow’” in the blank space
provided on the fuse label. Then peel the paper
backing from the label and press it in place above the
line cord in the chassis.
() Position the free ends of all wires coming from
terminal strips AA and AB over the back of the chassis
and out of the way.
(_ ) Place the previousty assembled circuit board in the
chassis as shown in the Pictorial. Insert the free end of
the large shielded cable, coming from circuit board
holes BB and CC, through grommet AE. NOTE: Since
grommet AE serves as a strain relief for the large
shielded cable, the cable will not slide easily through
the grommet. Therefore, use your fingers to apply a
soapy solution (either liquid or bar type soap will do)
to the cable to make it slide through the grommet.
Then wipe off the excess soap.
Connect the transformer leads to the circuit board as
follows:
( ) Short yellow lead to hole L (S-1).
( ) Long yetlow lead to hole K (S-1).
( ) Either red lead to hole H (S-1).
( ) Other red jead to hole G (S-1).
(_ } Connect the inner lead of the small shielded cable
coming from switch SW2 to solder lug AC (S-1).
(_ ) Connect the large black stranded wire coming from
circuit board hole R to solder tug AD (S-1).
Refer
to
Pictorial
2-9
in
the
Nlustration
Booklet
for
the
following
steps.
NOTE:
When
you
connect
the
following
wires
to
the
foil
side
of
the
circuit
board,
leave
the
insulation
1/8"
away
from
the
foil
so
that
solder
can
flow
around
the
bare
wire
end.
See
the
inset
drawing.
( ) Reposition the circuit board as shown.
Connect
the
wires
coming
from
terminal
strip
AA
to
the
foil
side
of
the
circuit
board
as
follows:
(_
)
Large
black
wire
coming
from
lug
3
to
hole
C
(S-1).
(
)
White-red
wire
coming
from
lug
6
to
hole
B
(S-1).
Connect the wires coming from terminal strip AB to the foil
side of the circuit board as follows:
(_ )} Red wire coming from lug 1 to hole D (S-1).
( ) Large black wire coming from lug 2 to hole E (S-1).
( ) White-yellow wire coming from lug 5 to hole A (S-1).
{ ) Inner lead of the small shielded cable coming from lug
6 to hole LL (S-1).
Refer to Pictorial 2-10 for the following steps.
(_
)
Mount
the
circuit
board
to
the
front
of
the
chassis
as
shown.
Position
switch
SW102
so
the
lug
with
the
white-red
wire
is
on
top.
Then
mount
switch
SW102
to
the
chassis
with
two
6-32
x 3/8”
screws.
Install
control
flat
washers
and
control
nuts
on
switches
SW1
and
SW2.
WHT-RED SW102
CONTROL
FLAT
WASHER
GONTROL
NUT
PICTORIAL 2-10