Heathkit IT-3120 User guide

Heathkit@ Manual

for the

FET/TRANSISTOR

TESTER

Model IT -3120

595-1989-04

• • -

'':It

TABLE OF CONTENTS

Introduction ...... . . ......................... . ...

..

Parts List . . .
Assembly Notes
Step-by-Step Assembly

Subpanel Assembly and Wiring . .
Front Panel Assembly and Wiring
Subpanel Installation
Final Wiring

Test and Adjustment

Final Assembly .........

HEATH

BENTON

.......

COMPANY

HARBOR,

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MICHIGAN

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......

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49022

....

2

Operation

2

In

Case

....

.4

...

..

5

Specifications .. . ..........

. .

..

.8 Circuit Description

.

.19

. . 20

Chassis Photograph

13

15 Circuit Board X-Ray Views

17 Schematic

Warranty
Customer Service

......

of

Difficulty . . ......

Troubleshooting

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(Fold-out from page) .

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Printed

..

in

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20
29

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©

30

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31

32

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38

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39
41

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1976

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Inside Front Cover

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Inside Rear Cover

Copyright

Heath Company

All Rights Reserved

the United States of America

Page

2

INTRODUCTION

The Heathkit Model IT -3120 FET /Transistor Tester
instrument for quick, accurate tests of conventional (bipolar)
transistors, diodes, FET's, SCR's, triacs. and unijunction
transistors. Gain (DC Beta), transconductance (Gm), and
leakage values are read directly
meter.

You

can

quickly
out-of-circu it. The Tester provides special
balance
coded

FET sockets

Five current

microampere and collector currents

out

leads

and easily test devices either in-circuit

in-circuit impedances.

for

in-circuit tests

for

out-of-circuit tests.

ranges

permit

on

the large easy-to-read

Use

or

the

built-in

leakage measurements

as

high

is

a quality

circuitry

either the

transistor and

as

low

as

1 ampere.

PARTS

Check

each
correspond
from

Page

Any

part

on

it

should

identified

KEY

HEATH

No. Part No.

part against

to

the numbers on the

5) .

that

is

packaged in

be

until

that

PARTS DESCRIPTION
Per

the

following

an

placed back in its envelope after

part

is

called

Kit

list. The key numbers

Parts

Pictorial

envelope

for

with a part

in a step.

(fold-out

or
to

color

as

1

number

it

is

type

Pushbutton

easy,

consistent operation.

A special battery testing

of

the

condition
Another convenience
two-color

conventional (bipolar) transistors and

FET's. Also, separate, brief operating instructions
printed on the rear panel.

Refer

to

the

wiring,

soldering,

range, mode, and

of

front

panel design, black lettering

"Kit

Builders

resistors, and

circuit

the

of

this portable instrument

Guide" for

function

provides a meter indication

self-contained power supply .

capacitors.

switches

red

lettering

information

assure

is

the

on tools,

LIST

To

order a replacement part,
furnished
"Replacement Parts" inside the rear cover
For pricing information, refer to separate "Heath Parts Price
List."

KEY

No. Part No.

with

HEATH

this

kit. If

PARTS
Per

Kit

CAPACITORS-DIODE-CONTROLS

use

the Parts Order Form

one

is

not

DESCRIPTION

available,

of

the Manual.

for
for
are

see

RESISTORS

1/2-Watt

A1

1-129

A1

H05

6-1509

A1

1/4-Watt,

A2 6-1

A2

A2

660-12

6-3600-12

6-1501-

Other

A3 2-11-2

A4 3-13-3

1%

Precision

12

3

4.7
violet-gold)

10

black-orange)
15

green-black-gold)

n,

10% (yellow-

kn,

5%

(brown-

n. 1% (brown

81
82
83
84
85

'

21-57
57-65
10-934

10-926
14-

11

2

.005

J-lF

disc capacitor

1 N4002 silicon diode

750 n control

kn

control

15
250

kn/5000

control

n (5

k)

HARDWARE

#2

166 n

2

(brown-blue­blue-black)
360 n (orange-blue
black-black)
1500 n (brown-green­black-brown)

n,

2-watt, precision

1.5

n.

3-watt,

.15

Hardware

C1
C2

C3

#4

Hardware

C4

C5

C6

250-1'75
252-51
254-7

250-52
252-2
254-9

10
10

10

2-56 x

3/8"

screw

2-

56

nut

#2

lockwasher

1/4"

8
8
8

4-40 x

4-40

#4

lockwasher

screw

nut

I§

~

fUitSf§hi9

Page

3

KEY

No.

-----

#6

Hardware

C7

C8

#10

C9

HEATH
Part No.

250-155

255-49

Hardware

250-83

PARTS DESCR IPTION
Per

Kit

---

6

3

2

#6 x 3/8"
metal screw
#6

# 1 0

self-tapping screw

sheet

spacer

x 1/2" hex head

Control Hardware

C10
C11
C12

252-7
253-10
254-4

2
2
2

Control nut
Control flat washer
Control lockwasher

SOCKETS - JACKS - PLUGS

01

434-342
434-343

02

436-11

03
'03 436-22 Black banana jack

436-24

03
03

436-29

D4 438-47

05

260-53

2
9

1
4
4

Transistor socket
Socket pin
Red banana jack

White banana jack
Green banana jack
Banana plug
Alligator clip

FEET-KNOBS-INSULATORS

E1

261-49

E2

462-362

E3

70-10 Black banana plug

E3

70-11

E3

70-12

E3

70-13

E4

73-34

8

2

4

Rubber

Knob

insulator
Red
insulator
Green banana plug
insulator

White banana plug

insulator

Rubber insulator

foot

banana plug

KEY

HEATH

No. Part No.

~-

-

--

Wire

(cent'd.l

344-70
344-71

344-72
344-73
344-74
344-75
344-77
344-78

PARTS DESCRIPTION
Per

Kit

White-black
White-brown

White-red
White-orange
White-yellow
White-green
White-violet
White-gray

MISCELLANEOUS

85-1167-1

F1

203-1412-2
F2 90-561-3
F3

204-1837

F4

207-82

F5 211-15

F6 214-76
F7

407-173

F8

455-50 2

F9

64-97
F10 64-98
F11

64-99
F12 490-5

597-260

597-308

391-34

The

following

use

in

the

completed

2 O-cell flashlight batteries (alkaline

longer

life).

5

2

1

batteries should

Kit:

Circuit board
Front panel
Cabinet shell
Subpanel
Clamp
Handle
Battery holder
Meter

Knob bushing
Mode switch
Range switch
Function switch
Nut starter
Parts Order Form
Kit Builders Guide
Blue and white label
Manual (See front cover
for part number.)

Solder

be

purchased

type

at

this time

preferred

for

for

WIRE

341-1
341-2
341-5
341·6

344-50

344-51 Brown
344·52
344-54
344-55 Greer.
344-59

Black stranded
Red

stranded
White stranded
Green stranded
Bla.::k

Red

Yellow

White

Page

4

=

= :

1.

Before
have read
the " Kit

2. Resistors
n,

or

kn,

directed otherwise.

starting

Builders

will

to

the

wiring and

Guide."

be

called

and color code.

ASSEMBLY

assemble

out

this

kit. be

soldering

by their respective value in

Use

1/2-watt resistors unless

sure

information

you

in

NOTES

3.

Capacitors
(in

11F)

SAFETY
excess
the

leads.

leads

WARNING:

so

and

We

the

ends

will

be

called

type (disc).

Avoid

suggest

that

will

you wear

not

fly

out

by their capacitance value

eye

injury

when you clip

glasses,

toward

your

or

at least clip

eyes.

off

1"

I I

2"

3"

I

4"

I

5"

I

6"

I

~

~fh*iifHfj]

Page

5

STEP-BY-STEP

START

Position

the

complete each

NOTE: When wiring this kit, you will be
instructed
of time,

wire,

remove

The wires are listed
they will be used .
wire until you are specifically instructed
to

do so

( ) Prepare

As

steps, turn

the
lead

circu it board as shown. Then

step

on

the

to

prepare lengths of wire ahead

as

in

the

cut

1/4"

in

white wire;

1/4"

2·

1"

5"

you install each wire

wire

next

it

to

the

indicated length

of insulation from each end.

in

the

Do

a step.

the

following lengths of

the

circuit board over, solder

to

the

foil, and

Pictorial.

step. To prepare a

order

not

use

in

the following

cut

off

in

~

5·1/2"

4"

3·1/4"

the

and

which

excess

ASSEMBLY

CONTINUE

NOTE

DIODES MAY

I

NAN

Y 0 F

THE

POS

ALWAYS
AS

SHOWN

Il

, v '

750 n control.

10

360

blu

4.7 n (Yellow-violet-gold).

.15

1.5

Solder the leads
off

15

( )

green-black-gold)

166

ITION

ON

lrlll

BANDED

1 N4002 silicon diode

kn

(brown-black-orange).

n.

1%

e-black-black)

n, 3-watt

n,

2-watt precision.

the

excess lead lengths.

n.

1%

n.

F 0 L

THE

CIRCUIT

precision

precision.

precision

LOW

THE

END

.

to

.

BE

the

SUPPLIED

IN

G S HAP E S.

BANDED

BOARD.

(#57-65).

(o

range

foil and

(brown-

(brown-

END

·

cut

I'

1"

white wire.

5"

white wire.

5·1/2"

white

4"

white wire.

3·1/4"

white wire.

rOR

GOOD

CONNECTIONS , YOU

K(EP

~~:

DAMP

SOLDER

THE

SOLDERING

TII~

c~~~:~.

SPONGE

OR

wire.

MUST

WITH

A -. _ _~ I

CLOTH

.

4tl

..

~"

PICTORIAL

1

over

the

outlines

on

4.7 n (yellow·violet·gold).

1500

n. 1%

green-black-brown)

4.7 n (yellow·violet-gold).

the

Solder
off

the excess lead lengths.

the

precision

leads

circuit board.

(brown-

.

to

the

foil and

cut

_pa_g_e_6

______________________________________________________________________

Refer

to

Pictorial 2

yellow

the
the

.

the

The

the

red
brown

white

following
circuit

following

other

such

number

are

at

( ) Prepare

6"
8-1/2"
8-1/2"
7-1/2"

NOTES:

1.

In
to
later

2. In
cause
number,
tion.
wires

for

the

following

following

steps,

board. The

steps,

wires

will

as

(S-3),

following

the

connection.

~~~fifi6Sfff{¥~

steps.

lengths

connect

2-1/2"

7"
7"
8-1/2"

other

(NS)

be

added

means

of

hookup

white
green
black

red

only

end

means

to

the

"S"

one

will

not

later.

solder

tells

wire :

end

be

connected

to

solder

"S-"

the

how

of a wire

be-

with a

connec-

many

PICTORIAL

2

Connect a

Connect

Connect

Connect a 7

Connect a

Connect a

Connect a

Connect

Cut
the

an

an

an

off

the excess lead lengths

circuit

6"

yellow

8-1/2"

8-1/2"

-1/2"

2-1/2"

7"

green

7"

black wire

8-1/2"

board.

wire

red wire

brown

white

white

wire

red

wire

to

hole E (S

to

hole

wire

to

wire

to

hole

wire

to

hole

to

hole C (S-1).

to

hole 0 (S-1).

to

hole

-1).

F (S-1).

hole A (S-1).

B (S-ll.

G (S-1).

M (S-1).

from

the foil side

of

34% % 0

I , I I I 1 I

1"

I

2"

I

3"

I

4"

I

5"

I

6"

,

///1

~

..

fU=.MiifH£§l

_____________________________________

• • • • • • • • • •

• • • • • • • • •

• • • • • • • •

• • • •

• • • • •

..

,'

w...

~

..-..

: ,-,-, .

./

-..

'.~

..

.

_ .

JIll...

~,

f18c.

..

"

,'.

-'

""'

....

..

~

J""\

.

.

..

."

.:

....

'..

~

g

P_a_

e_7

Refer

to

Pictorial 3 for

In

the

NOTE:

switches as follows:

1. Align

2. Press

3.

4.

following steps, install

board.

circuit board holes.

turn

the

each

end

Re-examine

seated against

Make sure

side

of

the

switch.

r..: : ::

YerQ~~:--_?8--

the

following steps.

the

switch over

Then

insert

the

switch against
circuit board over and solder
of

the

switch

the

switch

the

the

jumper wires on

the

circuit board

:

::

the

mode

the

holes

the

switch lugs into

the

circuit board;

to

the

foil.

to

make sure it

circuit board.

do

not

~

and

on

the

touch

cB

oaa

PICTORIAL 3

fu

nction

the

circuit

the

then

one

lug

at

is

still

component

the

lugs

of

~

~

. .

~~

Then

5.
surrounded

the

Install

at

AA. NOTE: To make sure you use

switch,

on

Install

board

Carefully
all
excess lead lengths.

NOTE:. You should have a
it

aside; it will

compare

Pictorial 3.

the

at

AB.

examine

leads

are

be

0

solder

with foil)

mode

switch

it

function switch

the

soldered

used later.

to

166

the

(#64-97)

the

circuit

to

remaining lugs (those
to

the

circuit board foil.

on

the

circuit board

the

correct

one

shown

at

(#64-99)

board foil

the

foil.

on

Then

location

the

to

cut

AA

circuit

make sure

off any

n precision resistor left. Set

Page

8

:::

o

PICTORIAL 4

SUBPANEL ASSEMBLY AND WIRING

Refer

to

Pictorial 4

NOTE: The plastic clamps you will install in the next two steps
are quite brittle. Place them in warm water
make them more flexjble before you install them.

( ) Refer

subpanel at AC. Support the back
then

use

hole. Position the clamp

( ) Likewise, install the clamps

NOTES:

1. The term
screws, nuts, and lockwashers when parts are being

for

the

following

to

the inset drawing and install a clamp

a screwdriver

"hardware"

to

press

as

shown in

at

will

steps.

AD, AE,

be

used

for

a few minutes to

of

the clamp

the

to

on

the

the subpanel;

into

the

Pictorial.

AF,

and AG .

refer

to

the

of

the

mounted in some

"Use 2-56 x

use

a 2-56 x
and a 2-56 nut. Refer
step

for

correct way

2.

Use

the plastic

hold

and start 2-56 and 6-32 nuts on screws.

( )

Mount
Use

2-56 x

( ) Install the range switch

shown.
NOTE:

cutout

the
the switch and insert one end at a time
cutout.

3/8"

3/8"

screw, one

the

correct

to

install the hardware.

nut

the assembled

3/8"

hardware

Use

2-56 x

The push

buttons

in the subpanel. Therefore, you must

following

hardware,"

or

to

the Pictorial called

number

starter suppl ied

circuit

3/8"

of

board on the subpanel.

at

AH,

(#64-98)

hardware at

of

this switch are larger than

steps. The phrase

for

example, means

more

#2

lockwashers,

out

lockwashers and the

with

this

kit

AJ,

AK,

and

AL.

on the subpanel

AN

and AP.

into

to

in a

to

as

tilt
the

_p_ag_e__1_0

Refer

to

Prepare the

7"
2"
6-1/

_____________________________________________________________________

Pictorial 6

white-orange
white

2"

for

the

following

white-yellow

following

lengths

2"

white
2-1 /2"
4"

white

steps.

of

white

wire:

( )

Connect a 4"
to

lug

( ) Prepare

1-1/4"

1/4"white

1-

9"

white-black

9"

wh

10

of

switch F (S-1).

the

following

white

ite-green

wh

ite

wire

lengths

9"

10"

7-1 /4"

~

from

white

red

fifPhSiifi¥£iU

lug 5

of

switch D (S-

of

wire:

-red

black

1)

Connect a
B

(S

switch G (S-1).

( ) Connect a

through clamp

( ) Connect a 6-1/

switch B (S-1), through clamps
switch G (S-1).

( ) Connect a

through

Connect a 2-1/
(S-1)

-1).

through

clamp

through

7"

white-orange

2"

white

AD.

2"

2"

white wire

AD,

2"

cla

mp

wire

clamps

white

AC

wire

from

to

lug 4

of

white-yellow

from

to

lug 6

of

wire

AD

to

l

ug 7 of

from

lug 15

and AD.

lug 2

switch G (S-1).

wire

AC

lug 3

switch G (S-

from

to

of

switch F (S-1)

from

and

AD,

to

of

switch F (S-1) ,

1)

lug 8

of

switch G (S-1).

of

switch

lug 14

lug 6

lug 5

.

switch F

of

.

of

of

only one end
later .

( )

( )

Connect
(NS)

( )

Connect
(S-2)

NOTE

: In each

Connect
sw itch E (S-1).
through

to

to

lug 3

a 1-

lug 3

of

one end

clamps

a 1-1/

4"

of

switch

1/4"

of

switch P (S

of

the

following

a w ire. The

AE

white

white

of

a 9"

Insert

and

wire

N (NS).

wire

-1).

fiv

other

white

the

AF.

from

lug 3

from

lug 3

e steps,

end

will

-black wire

other

end

of

switch M

of

switch

you

will

connect

be connected

to

lug 5

of

this

N

of

wire

3,4

% % 0

~1~,~I~,~t~,~~----L---~I~--~--~I----~--~1

1"

2"

3"

____

L-

___

4"

!L-

I

5"

__~__~!____~___

6"

,

~ >fif=f§fiif{~

_______________________________________________________________________

pa

_g_e_9_

( )

Temporarily

su

the
control

( )

Temporarily
T.

Use a control

to

Refer
following

( ) Position the free ends

NOTE:
cut
of

the insulation.

( ) Prepare the

Pictorial 5 (fold-out

steps.

circuit

When bare

the

white

1"

bare 3/
1-1/2"
3/4"

bare

3/4"

bare

install a

bpanel at

nut.

install a 15

board

out

wire

wire

to

following

white

S.

lockwasher and a

of

the way

is

the

250

kD/5000

Use a control

kD

control

from

of

the wires

as

shown.

called

for

in the

indicated

lengths

1"
1-1/4"

1-1/4"white

4"

bare

length;

of

bare

white

hookup

D (5

k)

control

lockwasher and a

on the subpanel

control

nut.

this

page)

coming

following
then remove all

wire

:

for

from

on

the

the

steps,

at

( )

( ) Prepare the

NOTE:
their
90 degrees)

neat

Connect a 1"

(S-2)

of

switch M to

Connect a 1-1/4"
(S-2)

to

lug 6

of

Connect a 1-1/4"

to

lug 6

(S-2)

8"

white-red

9"

brown

6"

white-violet

3"

white

Most

terminating

when

as

possible when

of

following

wire

lengths are longer than needed

points.

you

bare

switch

switch

position

it

is

wire

from

lug 6

of

white

wire

P (NS).

white

wire

R (NS).

lengths

12"

8"

yellow

7"

wh

Therefore,

the wires

completed.

lug 9 (NS)

switch

N (NS).

from

lug 6

from

lug 6 of

of

wire:

white-gray

ite-green

use

square corners (bent

to

make the

through

of

switch

switch

to

lug 4

reach

kit

as

N

P

( )

Connect a 1"
(S·l)

of

( ) Connect a

7

(S-l)

of

NOTE:
for
following

( )

( ) Connect a

( ) Connect a

NOTE

goes

two
one leaving the
soldering these connections,
to

Use

the

help in

to

wires in the solder

solder

identifying

steps.

Connect a 3/4"
to

lug 5

to

lug 5

tolug50fswitch

: Where a

another

these

bare

control

of

of

S.

1-1/2"

white

con

trol

S.

switch

"through

lug

bare

switch

N (NS).

3/4"

bare

switch P (NS).

3/4"

bare

R

wire

passes

point,

as

connection . Be

the

instructions

wires."

wire

between lugs 3 (NS) and 6

wire

between lugs 5

numbering

pushbutton

wire

wire

wire

(S-l).

through a connection

in

the

to

apply

drawing

switch lugs in the ( )

from

lug 2

of

swi tch M

from

lug 2

of

switch N (S-l)

from

lug 2

of

switch

next

step,

it

(S-2) one

especially

enough solder and heat

careful,

(S-l)

of

Pictorial 5

P (NS)

and then

will

count

entering

and

(S-l)

as

and

when

( ) Connect an

(S-l),

K

(S-l).

Connect a 9"

(S-l),

of

control

Connect
(S-l),

G

(S-l).

Connect a 3"
through

( ) Connect one end

switch A

AE,

AC,

Connect

( )

(S-1),

control T (S-l)

Connect

( )

(S-l),

G

(S-l).

8"

through

through

S (S-2).

a

6"

through

clamp

(S-l).

and

an

through

a

7"

through

white-violet

white

AF.

8"

.

white-green

clamps

white-red

clamps

brown

clamps

clamps

wire

AC,

to

lug 2

of a 12"

Insert the

It

will

yellow

clamps

wire

from

AC

and

AD,

wire

from

AC,

AE,

AF,

wire

from

AC

and

AD,

from

lug 5

of

switch D (S-l).

white-gray
other

be

connected later .

wire

from

AC,

AE,

wire

from

AC

and

AD,

lug

end

and

lug

to

lug 5

11

and

lug 3

to

lug 2

of

wire
through

lug 7

AF,

lug 18

to

lug

10

of

switch

of

switch

of

switch

AG,

to

lug 3

of

switch

of

switch

switch B (S-l),

to

lug 2

of

clamps

of

to

of

11

switch

of

lug 2

switch

switch

A

of

B

B

B

B

1"

I I

2"

3"

I

4"

I

5"

I

6"

I

Page

n lug 9 (NS) through lug 4

,witch

N (NS).

from

lug 6

of

lug 6

switch N

of

switch P

'e

5)

-e

from

5)

;

of

wire :

Nhite·gray
,

II

ow

hite-green

9

SWITCH

LUG

NUMBERING

Q

'ger than needed

~

.

us

e square corners (bent

?

INires

to make the kit

,d.

-e

from

lug

,d

AD.

to

from

lug

AF,

IE,

ire

from

AD,

to

,d

m lug 5

sw

itch D

.f

,hi Ie-gray wire

ther end through clamps

mnected late

from

lug 7

>.E,

and

e

from

lug

dAD,

10

to

lOaf switch

lug 5 of switch

11

of

swi tch B

and AG,

to

lug 3

of swit

lug 2 of switch

of

switch B (5·11,

(5·1

J.

to

lug 2

r.

of

switch A

AF,

to

lug 2

18

of switch

lug

11

of

reach

lug 3

ch B

switch

as

B

Q

of

of

B

PICTORIAL

5

5"

I I

6"

wH"

-eRN

~

IIhT \

SlK

~

R n\'lhT R[D

'n

n n/ I

Pi

SWITCH

LUG

NUMBERING

Q

Page

10

Refer

to

Pictorial 6

( ) Prepare the

7"

white-orange

2"

white

6-1

/2"

white-yellow

)

(

Connect a

B

(5-1),

switch G (5-11.

)

(

Connect a
through clamp

)

(

Connect a
swil

ch

B (5-1),

switch G

( )

Connect a
through clamp

( )

Connect a
(5-1) through clamp

for

followin'

7"

white-

through

2"

white

AD,

6-1/2"

throu

(S-l).

2" while

AD,

2-1/2"

the

cl

I

v

t

11\

PICTORIAL

6

Q

%%~O

I I ! t! t !

Refer

to

Pictorial 8

Prepare a

10"

for

the

length

following

of

black solid wire.

steps.

. / 5

OPEN

IDE

Page

13

Connect one end
switch A
through clamps

( ) Route the red wire coming

through clamps AC and

( ) Connect the

hole
T

(S-l).

( ) Connect the black wire coming

hole D, through clamps AE,
switch P (S-2).

( ) Connect the green

hole
switch P (S-2).

( ) Connect the

hole B, through clamps

switch N (S·2).

( ) Connect the brown

hole
switch M

( ) Connect the red wire coming

F, through clamps

M (S-1).

( ) Connect the

hole G

( ) Refer

each
arm

This completes the assembly and
it

aside temporarily.

(S-l).

E,

through clamps

C,

through clamps

A,

through clamps

(S-l).

to

lug 3

to

the

clamp.

until

it

locks

of

a

10"

black wire

Insert

the

other end

AC

and

AD.

It

will

from

AD.

It

will

yellow

white

white

To

wire coming

AE

and

AF,

AF,

wire

coming

AE,

AF,

wire coming

AE,

AF,

wire

coming

AE,

AF,

from

AE,

AF,

and

AG,

wire coming

of

switch D

inset drawing on Pictorial 8 and close

do

to

(S-l)

.

this, push inward on

the stationary arm.

wiring

FRONT PANEL ASSEMBLY AND

Refer

to

Pictorial 9

Place a soft

( )

front

panel

( ) Locate the

for

the

following

cloth

on

your

from

becoming scratched.

front

panel and position

work

steps.

surface

to

of

be

connected later.

circuit

board hole M

be

connected later.

from

circuit

to

lug 1

from

circuit

and

AG,

to

from

circuit

and

AG,

to

from

circuit

and

AG,

to

from

circuit

and AG,

from

of

WI

it

circuit

to

lug 6

circuit

the

the

subpanel. Set

RING

to

as

shown.

to

board hole

protect

lug

11

this wire

board

of

control

board

lug 2

board

lug 5

board

lug 5

board

lug 8

of

switch

board

flexible

the

of

't

. 1

/

0'

1,

'

C~K

3

~~

;

15

~~~

70

~

Detail 9A

( )

2.

Start a socket pin down through socket hole 1. Be
sure the open side of the top of the pin faces the
center of the socket.

3.

( )

of

( ) 4. On the underside of the socket. grasp the full length

of

( ) 5.

of

( ) 6. Similarly . prepare a 4-pin socket; do

( ) Install a prepared 5-pin transistor socket at BA with 2-56

of

( ) Install the prepared 4-pin socket at BF with 2-56 x 3/8"

( ) Install a black banana jack

( ) Install a

( ) Install a red banana jack

( ) Install a green banana jack at

( )

( )

Push the pin as far as you can into the socket. Then
pull it with long-nose pliers until it is fully seated.

of the pin with pliers and twist the pin about 45 de­grees to hold it into the socket.

In

the same manner. install four more pins into the

socket.

in

hole

5.

x 3/8" hardware.

hardware. Be sure to position the socket with lug 2 as
shown.

at

BB.

with

the

jack. Do

white

with

the

jack. Do

with

the jack. Do

with

the jack. Do

Mount a battery
hardware.
shown.

Mount
hardware.
shown.

a battery holder at

not

overtighten

banana jack at BC.

not

overtighten

not

overtighten

not

overtighten the nut.

holder at

Be

sure

to

position the positive (+) end

Be

sure

to

position the positive (+) end

at

BD.

BE. Use

BG

BH

not install a pin

Use

the

the

nut.

Use

the

the

nut.

Use

the

the

nut

the

with

with

'~

TURN

45°

nut

supplied

nut

supplied

nut

supplied

.

nut

supplied

4·40 x 1/4"

as

4-40 x 1/4"

as

'Refer to Detail 9A for the following six steps.

1.

( )

Position a transistor socket as shown.

( ) Mount the handle at BN with

self-tapping screws.

#10

x 1/2" hex head

Page 14

®

~

fH*iifH£il

o

PICTORIAL

o

10

.l

1"

I

2"

I I

3"

4"

I I

5"

6"

I