Heathkit IG-18 - Page 15

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Refer

to

Pictorial

7 (fold-out

from

Page

17) and

to

Detail

7 A

for

the

following

steps.

( ) Mount

the

power

transformer

to

the

under-

side

of

the

chassis

with

four

#6

lockwash-

ers,

and

four

6-32

nuts.

Connect

the

power

transformer

leads

to

the

power

supply

circuit

board

as

follows:

( )

One

red

to U (8-1).

( )

Red-yellow

to

V (8-1).

( ) The

other

red

to

X

(S-l).

NOTE: When

wiring

this

kit,

you

may

find

it

easier

to

prepare

the

lengths

of hookup

wire

ahead

of

time,

as

in

the

following

step.

The

wires

are

listed

in

the

order

in which

they

will

be

used.

Remove

1/4"

of

insulation

from

the

ends

of

each

wire.

( )

Prepare

the

following

lengths

of hookup

wire:

6"

red

5-1/2"

black

Twist

these

two

wires

together

to

form

a

twisted

pair

as

shown

in

Detail

7B.

( ) At

the

end of

this

twisted

pair

with

the

2"

black

Wire, connect

the

black

wire

to

hole Y

NEG

(S-l)

and

the

"red

wire

to

hole

Z POS

(S-1)

in

the

power

supply

circuit

board.

( ) At

the

other

end of

this

twisted

pair,

connect

the

1"

black

wire

to

hole C NEG (S-1) and

the

3"

red

wire

to hole A POS (S-1) in

the

wave

generator

circuit

board.

The

chassis

subassembly

is

now

complete.

Recheck

your

work;

thEm

proceed

to

the

switch

prewiring.

1"

I

2"

I

~3/4"

RED

3"

I

~

2"

BlK

Detail

7A

Detail

78

4"

I

3"

RE

D

5"

I

Page

13

OP

OF

CHASS I 5

I

1"-

I

r-sLK"1

6"

I

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