Heathkit DX 60B Assembly Manual

Page 2

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\l'l'l.i.l.i'i'i.l.l!!.l!l'i.i.ll.l.i.l.l.i'|'|.i'l'i l!|!!!!!i!i!i!i!i.l'i'i.l.|.l.i.l.l'l'i'fl

-
- .
- . Dear Customer:

Vou have just purchased one of the best performing electronic producu in the world - your Heathkit.
Heres how we aim to keep it that way:

Your Heathkit Warranty

i'i'i'i'i'i'ii'i'i'i'ii'i'iiii'i'i'i'i'ii'i'i'i'i'i'ii'i'l'i'i'i

During your first 90 days of ownership, any parts which we find
workmanlhip, will be replaced or repaired free of charge. And we'll pay a
you - anywhere in the world.

a defective, either in materials or
ping charges to get those parts to

it we determine a defective part has caused your Heathklt to need other repair, through no fault at yours, we
will service it free - at the factory, at any retail Heathklt Electronic Center, or through any of our authorized
overseas di ributors.

This protection is exclusively yours as the original purchaser. Naturally, it doesnt cover damage by use of
acid-core eolder, incorrect assembly, misuse, fire, flood or act: of God. But, it does insure the performance of
your Heathkit anywhere in the world - for most any other reason.

After-Warranty Service

What happen: after warranty? We won't let you down. If your Heamkit needs repair: or you need a part, just
write or call the factory, your nearest retail Heathklt Electronic Center, or any Heath authorized oversees
distributor. We maintain an inventory of replacement part! for each Heathkit model at most locations - even for
models that no longer appear in our current product line-up, Repair service and technical consultation is
available throum all locationt.

. We hope you'll never need our repair or replacement services, but it's nice to know you're protected anyway -
and that cheerful help is nearby. '

.l)'i.I.l.l."l'|.l'I'l.ll.li'i'l.l'il.i.l'l.l.ll'i'i'i!

HEATH COMPANY
Benton Harbor, Michigan 49022

.
Sincerely, I

&\i.i.i.i.i.

7

Page 9

HEATHKIT
PART PARTS DESCRIPTION PART PARTS
No, Per Kit No.
TRANSFORMER-COILS-CHOKES WIRE-SLEEVING
\54-179-24 1 Power transformer 89-1 1
\(0-644 1 Final amplifier coil Q344-54 1
\141-14 1 Coil and choke package 344-52 1
consisting of: \344.50 1
\(19)49-79 1 40 meter oscillator coil \344-51 1
20)4o-337 1 Driver plate coil \344-6 1
\(~2{)40-347 2 .32 11h low-pass filter coil \340-2 1
40-348 2 .44 uh low-pass iilter coil \340.3 1
\ 40-349 1 .5 uh low-pass filter coil \346-1 1
\(22)45-3 1 1 mh RF choke VIM-25 1
(23)45-4 1 1.1 mh RF choke -
\(24)45-19 1 Parasitic choke
\(25)45-41 1 .425 mh RF choke
TUBES-LAMPS-DIODES HARDWARE
$11-63 2 ac L6 tube 44)250-49 8
411-109 1 6DE'7 tube (45)250-34 4
11-75 1 6146 tube \(46)250-7 6
N 411-26 1 12AX'7 tube
\412-36 2 NE-ZE neon lamp \I(47)250-5e 4'7
:41'3111 1 Clear lens \(48)250-116 4
413-10 1 Red lens \(49)2so-s9 6
\(26)57-27 5 Silicon diode \(50)250-a 26
\(513250452 1
TERMINAL STRIPS-SOCKETS-PHONE JAC 52)251-1 10
\(27)431-14 1 Z-lug terminal strip 53)252-1
(one lug ground) V(54)252-15
\(28)431-1 1 2-1ug upright terminal 5 55)252-3 5
\(29)431-10 3 3-lug terminal strip 55)252-4
30)431-12 2 4-lug terminal strip \(57)252-3o
Q31)431-4o 1 4-lug terminal strip \(58)252-31
\(32)431-55 1 «4 6-lug terminal strip \(59)252-7
(33)431-45 1 6-lug terminal strip \(60)252-22
\(34)431-41 1 Z-lug high voltage term\'(61)252-32
\ strip 62)254-7 1
(35)431-43 1 3-lug high voltage termin\(63)254-1 7
strip \(64) 254 -2
N 431-42 2 5-lug high voltage term \(65)254-3
v strip 66)254-5
(363)434-36 2 9-pin ceramic tube 500%67)254-4
434-43 2 9-pin molded tube sock 68)253-9
\(37)434-39 2 Octal tube socket \(69)253-10
38)434-38 3 Crystal ocket \(70)253-19
§(39)434-74 1 Crystataf cket \\(71)259-6
(40)434_42 2 Phono socket (72)259-1
-. \\,.(41)436_4 1 Phone jack \73)259-1o
(42)432-3 1 Microphone connector \(74)455-9
(43)438-4 2 Phono plug

Page 7

\I('75)456-7

121E

NMHNWNhrfiJHNfiWOfiNQJHF-Dmfiim

DESCRIPTI ON

Line cord

Yellow hookup wire
Red hookup wire
Black hookup wire
Brown hookup wire
Large red hookup wire
Small bare wire

Large bare wire
Sleeving

Wire harness

3-48 x 1/4" screw
4-40 x 1/2" screw
6-32 x 3/16" round head
screw

6-32 x 1/4" screw
6-32 x 1/4" black screw
6-32 x 3/8" screw
#6 sheet metal screw
10-24 x 3/4" screw
6-32 spade bolt

3-48 nut

4-40 nut

6-32 nut

8-32 nut

10-24 nut

10-24 wing nut
Control nut

6-32 speednut
Push-on speednut

#3 lockwasher

#6 lockwasher

#8 lockwasher

#10 lockwasher

Thin control lockwasher
Control lockwasher
#8 flat washer
Control flat washer
#10 flat washer

#6 small solder lug
#6 solder lug
Control solder lug
3/ 8" bushing

1/4" shaft coupler

Page 10

Page 8

_HEATHKIT
PART PARTS DESCRIPTION PART PARTS DESCRIPTION
No. Per Kit No. Per Kit
METAL PARTS \1 Miscellaneous (cont'd.)
\90-358 1 Cabinet V23) 73'4 4 5/ 16" grommet
\200-425-1 1 Chassis ( 3'1 1 3/8" grommet
\ 203-485 1 Front panel >(81)261-9 4 Rubber foot
? 205 259 1 To 1 t ~ (82)260-39 1 Anode clip (Appearance may
4 - p p a e
\ 205-260 1 Bottom plate \ 206 3 1 girtigbe shad
206-271 1 F t h 1d ' 1
1%{206-272 1 Rig: 5:11:01 Q 206-54 3 2-3/8" tube shield
(7'7)206-136 1 Oscillator shield \ (33)65'9 1 Circuit breaker
206-137 1 Driver shield \w-(84)75-24 1 Line cord strain relief
\1 (name-2'13 1 Center shield (832316 } CaPaCitor mountmg wafer
2 206-274 1 Low-pass filter chassis \ 391 1 131::an white label
MISCELLANEOUS \ 1 aginuilngit: f)ront cover for
53-66 1 5" shaft \ 597-260 1 Parts Order Form
\ 53-102 1 7-7/8" shaft \ Solder
462-122 5 Skirt knob
100-687 2 Knob with pointer assembly

PROPER SOLDERING TECHNIQUES

Only a small percentage of customers find it
necessary to return equipment for factory
service. By far the largest portion of mal-
functions in this equipment are due to poor
or improper soldering.

If terminals are bright and clean andfree of wax,
frayed insulation and other foreign substances,
no difficulty will be experienced in soldering.
Correctly soldered connections are essential if
the performance engineered into a kit is to be
fully realized. If you are a beginner with no
experience in soldering, a half hour's practice
with some odd lengths of wire may be a worth-
while investment.

For most wiring, a 25 to 100 watt iron or its
equivalent in a soldering gun is very satisfactory.
A lower wattage iron than this may not heat the
connection enough to flow the solder smoothly.
Keep the iron tip clean by wiping it from time
to time with a cloth.

CHASSIS WIRING AND SOLDERING

1. Unless otherwise indicated, all wire used
is the type with colored insulation (hookup
wire). In preparing a length of hookup wire,
1/ 4" of insulation should be removed from
each end unless directed otherwise in the
assembly step.

2. To avoid breaking internal connections when
stripping insulation from the leads of trans-
formers or similar components, care should
be taken not to pull directly on the lead. In-
stead, hold the lead with pliers while it is
being stripped.

3. Leads on resistors, capacitors, and similar
components are generally much longer than
need be to make the required connections.
In these cases, the leads should be cut to
proper length before the part is installed.
In general, the leads should be just long
enough to reach their terminating points.

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@

TRANSFORMER WIRING
Refer to Pictorial 3 for the following steps.
( ) Measure the leads from where they come

out of the power transformer and cut them
to the following lengths:

COLOR LENGTH
Brown 3"
Brown 3"

Red 2- 3/ 4"
Red 4"
Green-yellow 2-1/2"
Yellow 4"
Black-green 2-1/ 2"
Black- yellow 4"
Black- red 4"
Black 2- 1/2"

( )

Strip 1/4" of insulation from the end of
each wire except the yellow one, and apply
a small amount of solder to the tip of each
bared lead.

Connect the power transformer leads as follows:
COLOR CONNECT TO

V(\ifiinther brown lug 1 of terminal strip F (NS).

\(8 Brown
(y Short red

(5) Gre en-yellow

X) Long red
(>9

lug 2 of terminal strip F (NS).
lug 1 of terminal strip J (S-Z).

lug 2 of terminal strip J
(S-l).

lug 1 of electrolytic capac-
itor K (NS).

Remove 3/ 4' of insulation from the end of
the yellow lead. Pass the bare end through
lug 3 of terminal strip J (5-5) to lug 2 of
socket BE (S-l).

Alternate Line Voltage Wiring

Two sets of line voltage wiring instructions are
given below, one for 120 VAC line voltage and the
other for 240 VAC line voltage. In the U.S.A.,
120 VAC is most often used, while in foreign
countries 240 VAC is more common. USE ONLY
THE INSTRUCTIONS THAT AGREE WITH THE
LINE VOLTAGE IN YOUR AREA.

120 VAC Wiring

M Twist together loosely the black and black-
green power transformer leads. Connect
both to lug 2 of terminal strip BD (NS).

) Twist together loosely the black-red and
black-yellow power transformer leads.
Connect both to lug 6 of socket BE (NS).

Now proceed to Component Wiring.

240 VAC Wiring.

together loose
of terminal str

connect both to lug 1
5-2).

black lead to
(NS).

( ) Connect

2 of terminal

Connect the black-red lead to lug6 of
BE (NS).

ket

COMPONENT WIRING

) Connect a 220 n (red-red-brown) resistor
between lugs 2 (NS) and 3 (NS) of terminal
strip E.

) Connect a 10 o (brown-black-black) re-
sistor between lugs 1 (NS) and 2 (NS) of
terminal strip E.

(y) Connect either positive (+) lead of a 20-20
Md electrolytic capacitor to lug 2 (S-3) and
the other positive (+) lead to lug 3 (8-2) of
terminal strip E.

) Connect the remaining lead of this capaci-
tor to lug 2 of terminal strip F (8-3).

Connect the cathode lead of a silicon diode
to lug 1 of terminal strip E (S-2) and the
other lead to lugl of terminal strip F (8-2).
See Detail 3B.

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Page 29

_I-IEATI-IKIT

Detail 10A

The low-pass filter coils will be installed in the
following steps. Bend the ends of the coilsto the
approximate shape shown in the Pictorial. This
can be done by holding the coil with a pair of
long-nose pliers as shown in Detail 10A. Then
bend the ends of the coil with your finger. Also,
do not attempt to bend the coil lead around the
lugs to make a connection; merely insert it into
the lug opening and follow the soldering instruc-
tions.

m Connect a yellow marked coil (#40-347) be-
tween lugs 1 (S-2) and 3 (NS) of terminal
strip DE. Position the coil so it does not
touch lug 2 of the terminal strip.

bq Connect ayellow marked coil (#40-347)from
lug 2 of terminal strip DB (8-2) to lug 1 of
phono connector DA (NS).

:46 LOCKWASHER
6732 NUT

) Place a 1/2" length of sleeving on one lead

\ of a green marked coil (#40-348). Position
this lead through hole DF and connect it to
lug 3 of terminal strip DC (NS).Connect the
other lead to lug 1 of phono connector DA
(5-2).

Place a 1/2" length of sleeving on one lead
of a green marked coil (#40-348). Position
this lead through hole D6 and connect it to
lug l of terminal strip DC (NS).Connect the
other lead to lug 3 of terminal strip DE (NS).

M Connect a blue marked coil (#40-349) be-
tween lugs 1 (S-3) and 3 (8-3) of terminal
strip DC.

% Connect a 4-1/2" large bare wire to lug 3

of terminal strip DE (8.3). Use sleeving on
this wire.

VCarefully inspect the wiring for any un-
soldered, or loose connections. Also, make
sure the coils are not touching the chassis.

(>k Refer to Pictorial 11 and mount the filter
assembly to the top of the chassis. Position
the wire from the assembly through grommet
Z. Secure the assemblyto the chassis, using
#6 lockwashers and 6-32 nuts on the spade
bolts.

PICTORIAL ll