Heathkit GC-1005 User manual

M°°E`GC-1005 Electronic Clock
H EATH KIT®
Copyright C 1972
Heath Company
All rights reserved
PRICE $2.00
1-595-1500-03

•
I
71)
NNW
Sincerely,
HEATH COMPANY
Benton Harbor, Michigan 49022
11
11 1 
11 111
11 I
I  I
O
Dear Customer:
The Heathkit electronic product you have purchased is one of the best performing electronic products in the
world.
Here's how we aim to keep it that way:
Your Heathkit Warranty
During your first 90 days of ownership, any parts which we find are defective, either in materials or
workmanship, will be replaced or repaired free of charge. And we'll pay shipping charges to get those parts to
you — anywhere in the world.
If we determine a defective part has caused your Heathkit electronic product to need other repair, through no
fault of yours, we will service it free — at the factory, at any retail Heathkit Electronic Center, or through any of
our authorized overseas distributors.
This protection is exclusively yours as the original purchaser. Naturally, it doesn't cover damage by use of
acid-core solder, incorrect assembly, misuse, fire, flood or acts of God. But, it does insure the performance of
your Heathkit electronic product anywhere in the world — for most any other reason.
After-Warranty Service
What happens after warranty? We won't let you down. If your Heathkit electronic product needs repairs or you
need a part, just write or call the factory, your nearest retail Heathkit Electronic Center, or any Heath
a,uthorized overseas distributor. We maintain an inventory of replacement parts for each Heathkit model at most
locations — even for many models that no longer appear in our current product line-up. Repair service and
technical consultation are available through all locations.
tNe 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.

5
15
16
17
Assembly
and
Operation
of the
ELECTRONIC CLOCK
MODEL GC-1005
TABLE OF CONTENTS
Introduction

Parts List

Assembly Notes

Step-by-Step Assembly

Cabinet Top

Cabinet Bottom

Alternate Line Voltage Wiring
Other Wiring

17
Decorating

20
Initial Tests
21
Operation

22
In Case of Difficulty
23
Troubleshooting Chart

24
Specifications
25
Circuit Fundamentals

26
Chassis Photograph

•

27
Circuit Board X-Ray Views

28
Circuit Board Voltage Charts
30
Identification Chart

31
Schematic.. .(fold-out from page)

31
Warranty

Inside front cover
Customer Service

Inside rear cover
HEATH COMPANY
BENTON HARBOR, MICHIGAN
490 2 2

Page 2
INTRODUCTION
The Heathkit Model GC-1005 digital Electronic Clock has
many attractive features, including: a wiring option that lets
it display either 12-hour or 24-hour time; an AM-PM alarm
with snooze alarm; a 6-digit, easy-to-read display; a power
interruption indication; a 50 or 60 Hz wiring option; and a
120-volt or 240-volt wiring option. The heart of the Clock is
an MOS/LSI* integrated circuit that performs all the logic
functions of keeping time.
A simple wiring option lets your Clock display either
12-hour or 24-hour time. The clock "knows" the difference
between AM and PM and will only sound the alarm for the
one time (either AM or PM, but not both) in 24 hours that
you desire. The snooze alarm waits approximately seven
minutes each time it is reset, until it sounds again.
The readout tubes clearly display the time on a sloped
surface, and the 6-digit display shows all 8's if there is a
significant power line interruption. The Clock can be wired
to operate from either a 50 Hz or a 60 Hz power line, or 120
volts or 240 volts AC.
Attractive, modern styling; small size; and solid-state
dependability make this Clock ideally suited for your office,
your home, or almost anywhere.
Refer to the "Kit Builders Guide" for complete information
on unpacking, parts identification, tools, wiring, soldering,
and step-by-step assembly procedures.
*MOS/LSI (Metal Oxide Semiconductor/Large Scale
Integration)
PARTS LIST
27 kS2 (red-violet- 
.10
orange)
82 k&2 (gray-red-

.10
orange)
91 kS2, 5% (white-brown-
 10
orange)
100 kS2 (brown-black- 
.10
yellow)
180 k12 (brown-gray- 
.10
yellow)
Check each part against the following list. The key numbers
correspond to the numbers in the Parts Pictorial (fold-out
from Page 5). Any part that is packaged in an individual
envelope with the part number on it should be placed back
in the envelope after it is identified until it is called for in a
step.
KEY PART
4 PARTS 
DESCRIPTION

PRICE
No. No.

Per Kit

Each
RESISTORS
NOTE: Each of the following resistors has a 10% tolerance
unless otherwise noted. 10% is indicated by a silver fourth
color band, while 5% is indicated by a gold band.
1 /4-Watt
Al
1-46-12
N 14
Al
1-12-12
\ -' , 1
Al 1-90-12 -  2
Al
1-32-12
Al
1-16-12
CAUTION:
The integrated circuit (#443-601) can be
damaged by static voltage. Do not handle it until you are
told to do so.
To order a replacement part, use the Parts Order Form
furnished with this kit. If a Parts Order Form is not
available, refer to "Replacement Parts" inside the rear cover
of the Manual.
KEY PART
No.
 No.
PARTS
Per Kit
DESCRIPTION PRICE
Each
1/2-Watt
A2 1-45
220 S2 (red-red-brown) .10
A2 1-13
2700 S2 (red-violet-red) .10
A2
1-114
\J / 2
8200 2, 5% (gray-red-
red)
.20
A2 1-109
73
12 kS2,
5% (brown-
red-orange)
.20
A2 1-162 N I( 1
( 4
15 kS2, 5%
(brown-
green-orange)
.10
A2
1-22 22 kS2 (red-red-
orange)
.10
A2 1-23
271(2 (red-violet-
orange)
.10
A2
1-47
56 k2 (green-blue-
orange)
.10
A2
1-121 '\ 13
120 kS2 (brown-red-
yellow)
.10

CIRCUIT BOARDS-CABINET-LABELS
85-1239-3
Main circuit
board
85-1240-2
1.,
Display circuit board
D1
92-77
1
Cabinet top
D2
92-78
1
Cabinet bottom
D3
390-341 *I 1 Heathkit label
390-362
-

1
Fuse label
390-926
1
Cord disconnect label
390-995
1
Wood-grain trim
391-34
Blue and white label
MISCELLANEOUS
Page 3
KEY PART
No.

No.
PARTS
Per Kit
DESCRIPTION
PRICE
Each
Resistors (cont'd.)
A2

1-30
- 6
270 k&2 (red-violet-
yellow)
.10
A2

1-33
6 \I
470 kS2 (yellow-violet-
yellow)
.10
A2

1-35
6\
1 MS
-
2 (brown-black-
green)
.10
CAPACITORS
A3

20-100
1
30 pF mica
.20
A4

21-163
6 \I
.001 pF disc
.10
A5

27-63
1\i
.022 pF Mylar
*
.10
A6

25-30
1
Dual 204F electrolytic
1.00
A7

25-241 1\/
1200 pcF electrolytic
.90
DIODES
B1

56-25
`
1
1
1N4166A zener
1.00
B1

56-56
\18
1N4149
.20
B1

57-27
1
1N2071
.50
B1

57-65
1N4002
.20
CORD-WIRE-CABLE
SWITCHES-INSULATORS
NOTE: Transistors and integrated circuits are marked for
identification in one of the following four ways:
1.
Part number.
2.
Type number. (In integrated circuits this refers
only to the numbers; the letters may vary.)
3.
Part number and type number.
4.
Part number with a type number other than the
one listed.
TRANSISTORS-INTEGRATED CIRCUIT
B4
60-1
0
-I-
,
SPST switch .20
60-6 3
SPST switch with spring
return
.30
B5
60-2
2'N
DPDT switch
.30
B6
75-52
‘t
6\
,
Switch insulator
.10
B7
75-103 1\/
Fish paper, 5-1/2"
x
1-7/8"
.10
B8
75-93
Fish paper, 1" x 1"
.10
B9
75-138
-
4N
Rubber foot
.10

B2 417-811

t'

B2 417-295

6
\,
B2 417-801
(2
g`i

B3 443-601

N
89-44

1
N

Line cord

.55
*DuPont Registered Trademark
KEY PART
No. No.
Cord-Wire-Cable (cont'd.)
340-11
344-50
1''v'
1
347-55
)\/
HARDWARE
Cl
250-420
7.:
C2
250-52
3.
C3
252-2
C4
254-9
C5
250-276
12-
C6
250-381
250-89
C7
250-1156
4'
,
C8
252-3
C9
253-60
2
-
-
C10
254-1
C11
259-1
6
-
54-820 N 1
El 204-1876 "2
6
E2 205-141

2
'7
E3 258-167

2
E4 346-6

‘‘i 1
E5

401-163
-
v 1
E6 411-286 .N3
E7 412-11 \ 1
E8 421-40
E9 431-43
N
v 1
El0 432-134 \
1
56
El 1 432-144 24
7
E12 432-199
PRICE
Each
Bare wire (used only

.05/ft
for soldering iron tip)
Black wire

.05/ft
8-wire cable

.25/ft
2-32 x 1/4" self-tapping

.05
screw
4-40 x 1/4" screw

.05
4-40 nut

.05
#4 lockwasher

.05
6-32 x 3/8" flat

.05
head screw
6-32 x 3/8" black screw .05
6-32 x 3/8" screw

.05
6-20 x 2-1 /4" self-

.10
tapping screw
6-32 nut

.05
#6 flat washer

.05
#6 lockwasher

.05
#6 solder lug

.05
Power transformer
Angle bracket
Tool plate
Speaker clamp
Sleeving
Speaker
Display tube
Neon lamp
3/16-ampere slow-blow
fuse
Terminal strip
Connector pin
Integrated circuit
(IC) connector
Wire nut
MPS-L01
transistor

.40
MPS-L51
transistor

.50
MPS-A20 transistor

.20
MK5017AA integrated

15.00
circuit
PARTS

DESCRIPTION
Per Kit
1.65
.85
1.20
1.10
.10
.10
.15
.40
4.60
.15
.10
.05
.05
1.40
5.00
.20
.40
.10
.10
.01
.10

LARGE
BARE WI RE
CUT TO
CHI SEL
SHAPE
Page 4
KEY PART

PARTS
DESCRIPTION

PRICE
The

prices

apply

only

on

purchases

from

the

Heath
No.

No.

Per Kit
Each
Company where shipment is to a U.S.A. destination. Add
10% (minimum 25 cents) to the price when ordering from a
Miscellaneous (cont'd.)
E13

446-609

1
Window
1.20
Heathkit Electronic Center to cover local sales tax, postage,
and

handling.

Outside

the

U.S.A.,

parts and service are
490-5
Nut starter
.10
available
from your local Heathkit source and will reflect
597-260

*1'
Parts Order Form
additional

transportation,

taxes,

duties,

and

rates

of
597-308

1N-•
Kit Builders Guide
exchange.
Manual (See front cover
for part number.)
2.00
Solder (Additional 6' rolls
of solder, #331-13, can be
ordered for 25 cents each.)
ASSEMBLY NOTES
1.
Before you start to assemble this kit, read the wiring,
soldering, and step-by-step assembly information in
the "Kit Builders Guide."
2.
Due to the small foil area around the circuit board
holes and the small areas between foils, it will be
necessary to use the utmost care to prevent solder
bridges between adjacent foil areas. Use only a
minimum amount of solder and use no larger than a
25
N
-watt soldering iron with a small tip. Allow it to
reach operating temperature, and then apply it only
long enough to make a good solder connection.
3.
If a small wattage, small-tip soldering iron is not
available, proceed as follows: Be sure your soldering
iron is cool. Wrap the large bare wire (supplied) tightly
around the soldering iron tip as shown in Figure 1.
Allow approximately 1/4" of wire to extend beyond
the end of the soldering iron. Cut the wire end to a
SOLDERING'
IRON TI
P
F
igure
1
chisel shape as shown. Occasionally apply solder to the
turns of large bare wire to achieve a good heat
transfer.
4.
Resistors will be called out by their resistance value in
52, kn, or MS2, and color code.
5.
Capacitors will be called out by their capacitance value
(in pF or
a
uF) and type (disc, mica, Mylar, or
electrolytic).

START
'W"
STEP-BY-STEP ASSEMBLY
4"
I
3
3 4 1/ 1 / 4 0
/2
1 1. 1 1
5
"  6"
1
1" 
2"
Page 5
Position the display circuit board as shown
in Pictorial 1-1. Then complete each step
on the Pictorial.
NOTE:  In  the 
following  steps,  use
1/4-watt 
resistors  (the 
smaller  resistors)
unless directed otherwise.
(\-)

180
kn (brown-
g
ray-yellow).
(‘--)  27 kfl (red-violet-orange).
1 
91 Ica 5% (white-brown-orange).
N
Y 1 
180 kS2 (brown-gray-yellow).
SAFETY WARNING: Avoid eye injury
when you clip off excess leads. We suggest
that you wear glasses, or at least clip the
leads so the ends will not fly toward your
eyes.
(s- 1

Solder the leads to the foil and cut
off  the  excess  lead  lengths.  Save
these  excess  lead  lengths for the
next four steps.
NOTE: In the following four steps, use cut
off resistor leads as shown. Solder each
lead as it is installed. lc
,
- r ,
)
 3/4" resistor lead at K. See the inset .
drawing.
N)

3/4" resistcr lead at L.
N)

3/4" resistor lead at
N.
'N , 1 
3/4" resistor lead at P.
(  ) 
Make  sure  the 
fdur  previously
installed wires are still down against
the circuit board and did not move
during soldering.
(V)

180 kn (brown-gray-yellow).
( L
)

82 kft (gray-red-orange).
t= )

27 ks -
2 (red-violet-orange).
(k )

100 Id2 (brown-black-yellow).
( 
1 
27 ks2 (red-violet-orange).
( 1 / 44 ) 
Solder the leads to the foil and cut
off the excess lead lengths.
CONTINUE
''''t•.-)

180 Id2 (brown-gray-yellow).
* 1
°
1

27
 Id2  (red-violet-orange).
*t.
( 
)

91 kft, 5% (white-brown-orange).
("1 
27 ks -
2 (red-violet-orange).
(\ 1 
100 Id2 (brown-black-yellow).
('''' )  470 
kf2,

1/2-watt
 (yellow-violet-
yellow).
NO 
Solder the leads to the foil and cut
off the excess lead lengths.
1 -
J)
 470 
kft, 
1/2-watt
 (yellow-violet-
yellow).
AO  470 
ka 
1/2-watt 
(yellow-violet-
yellow).
14:0  470  kfl,  1/2-watt
 (yellow-violet-
yellow).
N)

470

162,  1/2-watt

(yellow-violet-
yellow).
ti )

470  kn,  1/2-watt 
(yellow-violet-
yellow).  Be sure the leads of this
resistor  do 
not  touch  any  other
resistor leads.
* Nif 1

Solder the leads to the foil and cut
off the excess lead lengths.
\i,../1 
180 kS2 (brown-gray-yellow).
\J., 1  180 kit (brown-gray-yellow).
) 
180 ks2 (brown-gray-yellow).
‘ 1\1

Solder the leads to the foil and cut
off the excess lead lengths.
PICTORIAL 1-1
FOR GOOD SOLDERED
CONNECTIONS. YOU MUST
KEEP THE SOLDERING
IRON TIP CLEAN
WIPE IT OFTEN WITH A
DAMP SPONGE OR CLOTH .
PART
NUMBER

PARTS PICTORI
.  .
eivrerreq•Peo.4
NOTE: HEATH PART NUMBERS ARE STAMPED
ON MOST DIODES.
F3)
Ca)
0
..... ` 7 . 7".".. 1 •
Jl

5/-1

55
ARTS PICTORIAL
13 
i-zac_r-ri
4

Page 6
START
-4 41-
NOTES:
1.
Use the plastic nut starter supplied
with this kit to hold and start 6-32
and 4-40 nuts on screws.
2.
You will install two angle brackets
on  this circuit
 board.
 Do  not be
concerned
 if  the 
brackets  touch
nearby foils.
(  )  Angle bracket. 
Use a 4-40 x  1/4"
screw, a #4 lockwasher, and a 4.40
nut.
4-40 x 1/4"  SCREW
<:6
-\ ,7
#4 LOCKWASHER
6
4 -40 NUT
{,- ) 
Cut one lead of a 27 kfl, 1/4-watt
(red-violet-orange)

resistor to 3/8".
You will use this short lead in the
next three steps.
3/8
k
L. U T
1. Sixteen  connector  pins  at 0
V101. Solder the pins to the
foil.  Be  sure  tge  pins  are
straight and even. Do not fill
the pins with solder.
CONNECTOR
PIN 
RIDGE
NW/
AM/ /17112  1WM.1 .1
N
SOLDER
2. Push  the  3/8"  lead  of  the
previously prepa e
ed resistor
into each connector pin. This
will open the connector pins
slightly and make it easier to
install the display tubes later.
-0-3/8'  LEAD
Sixteen
 connector 
pins  at  V102.
Solder each pin to the foil and push
the short lead into each pin.
,J )
 Sixteen
 connector 
pins  at  V103.
Solder each pin to the foil and push
the short lead into each pin. Then
discard the prepared 27 kS2 resistor.
) 
Angle bracket. Use a 4-40
x 1/4"
screw, a #4 lockwasher, and a 4-40
nut.
CONTINUE
NOTE: 
In  each  of 
the following steps
where a transistor is installed, line up the
flat on the transistor with the flat on the
circuit board and insert the transistor leads
into the corresponding E, B, and C holes
in the circuit board. Solder each transistor
as it is installed and
lengths.
- 4 ---
cut
off the excess lead
FLA i
1/8
\
. 
.
'..j 
MPS-L01  transistor  (#417-811)  at
Q101.
NQ 1 
MPS- LO1 
transistor
 (#417-811)
 at
Q102.
)  MPS-L01

transistor  (#417-811)  at
Q103.
'4.„:1  100 Id2 (brown-black-yellow).
l' - : )  27 kS2 (red-violet-orange).

■
r ) 
100 k2 (brown-black-yellow).
(--') 
27 kS2 (red-violet-orange).
---) 
Solder the leads to the foil and cut
off the excess lead lengths.
/ 
MPS- LO1 
transistor  (#417-811)  at
Q107.
1  MPS- LO1  transistor  (#417-811)  at
0104.
4., )  MPS-L01  transistor  (#417-811)
 at
Q105.
4; 1 
MPS-L01
 transistor
 (#417-811)  at
Q106.
,....,
(  )  Make sure all leads are soldered, and
cut  off 
any 
excess 
lead 
lengths.
NOTE: Do not cut off the four leads
that extend
 from  the side of the
circuit board.
1 
Compare
 the  foil  area 
w!th 
t. -
e.
X-Ray View (on Page 28) to ze..7„. --a
there are no solder bridges.
Temporarily set the circuit
boar:: :
- ...:_= ::- , 2
FINISH
PICTORIAL 1-2
NOT
USED
NOT
USED
NOT
USED
r
•
-- - 1 H-
•

PART
NUMBER
IDENTIFICATION
DRAWING
0 0
Page 7
The steps performed in this Pictorial are in
this area of the circuit board.
START
Position the main circuit board as shown
in the identification drawing.
NOTE:  In  the 
following  steps, 
use
1 /2-watt
 resistors 
unless  directed  other-
wise.
)

12 kSZ, 5% (brown-red-orange).
j .) 
Twelve 
120 kS2 (brown-red-yellow)
resistors.
•  -:,
`1))

Solder the leads to the foil and cut
off the excess lead lengths.
CONTINUE
3`.. ,
)
22 kS2 (red-red-orange).
)% 1
)
22 kS2 (red-red-orange).
'tv: ) 22 kS2 (red-red-orange).
kJ)
12 k2 5% (brown-red-orange).
) t.o. 
1
1 M2 (brown-black-green).
Z ,,,  1
270 id?. (red-violet-yellow).
.  1 , -f  1
1 M12 (brown-black-green).
t ,, ' )
270 k1
-
2 (red-violet-yellow).
V)
Solder the leads to the foil and cut
off the excess lead lengths.
, 
IN,..)
1 MS2 (brown-black-green).
---...,
.i 
( 
1
270 kS2 (red-violet-yellow).
"  ('  ) 1 MS2 (brown-black-green).
(  ) 270 kS2 (red-violet-yellow).
"  (\-)
1 MS2 (brown-black-green).
( N
270 k2 (red-violet-yellow).
'  (''',.)
1 MS2 (brown-black-green).
,  I
270 k52 (red-violet-yellow).
N-) 
2700 ,S2
(red-violet-red).
(\/
Solder the leads to the foil and cut
off the excess lead lengths.
PICTORIAL 2-1

1
HEATH COMPANY
BENTON HARBOR, MICHIGAN 49022
PHONE [phone] TLX 72-9421
HEATH
Schlumberger
December 5, 1973
IMPORTANT NOTICE
Please make the following change in your Manual before you start to assemble the kit.
Page 8 — In the right-hand column, change the sixth step to read:
( ) 120 k22 (brown-red-yellow).
Thank you,
HEATH COMPANY
GC-1005/595-1500-3
591-1329

PART
NUMBER
0

(1
22 kE2 (red-red-orange).
°
Page 8
The
steps
performed in
this
Pictorial are in
this area of the circuit board.
START
)

Six

27

k1
-
2,

1/4-watt

(red-violet-
orange) resistors.
'r
1,,1

Solder the leads to the foil and cut
off the excess lead lengths.
NOTE:

DIODES

MAY

BE

SUPPLIED
IN ANY OF THE FOLLOWING SHAPES.
ALWAYS POSITION THE BANDED END
AS SHOWN ON THE CIRCUIT BOARD.
--
"I
>
BAND OR BANDS
(`I)

Eight 1N4149 diodes (#56-56).
IV)

1
N2071 diode (#57-27) at D201.
Solder the leads to the foil and cut
_

off the excess lead lengths.
CONTINUE
.)."-) 15 kSl, 5% (brown-green-orange).
1 27
kS2
(red-violet-orange).
4M1
-
) 8200 E2, 5% (gray-red-red).
-
1=
-
)

56 kE2 (green-blue-orange).
N) 120 kE2,X, (brown-red-yellow).
't
°
1 56 kE2 (green-blue-orange).
( ) 12 k2, 5% (brown-red-orange).
) Solder the leads to the foil and ct
off the excess lead lengths.
\s) 8200 E2, 5% (gray-red-red).
1 N4002 diode (#57-65) at D203.
\(,-) 1 N4002
diode (#57-65) at D202.
1N4166A
zener diode (#56-25)
2D201.
( '") 220 ft (red-red-brown).
) Solder the leads to the
foil and
cL
off the excess lead lengths.
PICTORIAL 2-2

Page 9
START
AP"
START
,
(v)

Six

MPS-
(#417-295).
transistor, solder
and cut off
i
L51

transistors
As

you

install

each
the leads to the foil
the excess lead lengths.
FLAT
N
t•-
)

Six

MPS-A20

transistors
(#417-801).
NOTE: When you install . disc, mica, or
Mylar capacitors, remove any excess coat-
ing from the leads. Use long-nose pliers to
remove the coating.
REMOVE COATING

-fn..
-
EVEN WITH

W%
''..
BOTTOM OF
CAPACITOR BODY

1
Six .001 ,uF disc capacitors.
N
sir

1

Solder
the leads to the foil and cut
off the excess lead lengths.
Assemble tht two tool plates to-
gether as
shown. Use a 6-32 x 3/8"
screw, two #6 Iockwashers, and a
6-32 nut.
TOOL
PLATE
o-32 x 3/8"
SCREW
#6 LOCKWASHER
) NOTE: In the following steps you
will prepare and install the IC con-
nectors. Read and follow the in-
structions
very closely.
I
lq ) Cut two (2) strips of
twelve (12) IC
connectors.
CONNECTOR STRIP
i I
,
e\oglo
vv

v, ,
v
o 00000,000001
o0
1
......_
12 CONNECTORS
CONTINUE
PICTORIAL 2-4
CONTINUE
) 30 pF mica.
) MPS-A20 transistor (#417-801) at
Q214.
• 11
,
6111116!
0
0
0
0
MPS-A20 transistor
(#417-801) at Q213.
67/7.
7
7)
.022 uF Mylar.
1 Solder the leads to the foil and cut
off
the excess lead lengths.
A L 2-3
IMPORTANT: On the next page, use the
following method to install the two IC
connector strips.
Position the connector strips as
shown.

CONNECTING
BAND
CONNECTING
BAND
CONNECTOR
STRIP
CONNECTOR STRIP
MOUNTING
LOCATION
Be sure the strips are perpendicular
to the circuit board. Then turn the
board over and solder the connec-
tors
to the foil.

The steps performed in this Pictorial are in
this area of the circuit board.
PART
NUMBER
IDENTIF (CATION
DRAWING
AX
CONTINUE
3"
gray
wire at hole AJ. The free
end will be connected later.
?V 1 3" green wire from hole AU to hole
AK.
5" violet wire at hole U. The free
end will be connected later.
N)
Connector pin at hole T.
( ) Connector pin at hole Y.
0
0 0
BX

'A'
Z
,g) 0
AN
1 Connector pin at hole Z.
t-.4) Connector pin at hole X.
1 Solder the pins to the foil. Also, bi
sure the wires are soldered and th
,
excess ends cut off.
) Compare the foil area with th
N
X-Ray View (on Page 29) to be sur
there are no solder bridges.
PICTORIAL 2-5

AK

1-0

F-
6 (---)
M
0
—
CB—
Page 10
START
AP'
'ici
►
Two strips of twelve connectors.

N
"NI-)

Use

the

assembled tool

plates to
remove the connecting bands. First
bend each band inward, and then
outward, as shown (several times if
necessary). Do not bend the connec-
tors.
TOOL PLATES
BANDS
6
L
/
J
•,...
i
1

1

I

BEND

1

HERE
IC CONNECTORS
(

)
Cut a 5-1/2" length of 8-wire cable
and separate the cable into eight
individual wires. You will use these
wires in the following steps.
'---------------------_
1
---

SEPARATE
—

f=
8- WIRE
CABLE
NOTE: In
the following steps, when a wire
is called for, cut the wire to the indicated
length, remove 1/4" of insulation from the
wire_ends, twist the strands together, and
apply a small amount of solder to the bare
ends. Solder each wire as it is installed and
cut off the excess bare wire ends.
4
-
\i )
2-5/8" brown wire.

,
\\/)
2-3/8" red wire.
N
IV

1
2-7/8" orange wire.
-
4
\1
1
5-1/4" yellow wire from hole AX to
hole BX.
Route it as shown.
ts
t•-1 )
2
-
1/2"
red wire from hole M to hole
AN.
0
3/4 y
1/
4
2

1 "

2"

3"

4"

5"

6
1111131

11

1

1

t1

1

A
Page 11
START
2-1/4" green wire from hole AT to
hole AR. Do not shorten this wire.
/ 3" blue wire at hole J. The free end
will be connected later.
Cut a 10" length of 8-wire cable
and:
1.
Separate the brown and red
wires from the cable, leaving
the brown wire connected to
the red wire.
2.
Separate the orange wire from
the cable.
3. Separate the yellow wire from
the cable.
4. Separate the green and blue
wires from the cable.
Leave  the 
green  wire
connected to the blue wire
and the violet wire connected
to the gray wire.
) 8" orange wire 
hole AS. The free
somosmowellesmommoimomouset
end will be connected later.
NOTE: The power line frequency in the
E U.S.A. is 60 Hz.
Do not
perform the
E following
step unless you live in an area
:(or a foreign country) that has a 50 Hz
:power line frequency.
E( )
3" yellow wire from hole BY to hole =
BZ.
3malmmammuommmisassammed
:NOTE: Most clocks indicate up to 12 E
:hours (0 - 12)
and then repeat. Do not :
:perform the following step unless you :
:want your Clock to indicate 24-hour time
(0-24).
:( )
3-1 /4" yellow wire from hole AY to
hole A2.
ammimmemsimillommasemmil
CONTINUE
Prepare the gray and violet wire pair
as shown.
7"
1/4"—•-:
Install

end 
A 
of the wire
combination as shown.
Violet wire to hole AB.
Gray wire to hole AA.
1 Cut the green and
blue wire pair to a
length
of 9 - 1/2" and prepare the
ends the same as the previous pair.
( 
Install the wire combination as
shown.
PICTORIAL 2-6
Blue wire to hole AD.
Green wire to hole AC.
) Check to be sure all wires are
soldered.

VI
BL
OF
YE
Of
1/2"-•
VIOL
BLU
GRN
YEL
ORG
SEPARATE THE WIRES AS SHOWN.
3"
4"
m-----
2 1
/2"
CUT THE WIRES AS SHOWN AND REMOVE 1/4''
OF INSULATION FROM EACH WIRE END.
Page 12
START
(

1

Cut a 9-1/2" length of 8-wire cable
and:
1.
Remove the gray wire from
the cable.
2.
Remove the brown and red
wires from the cable. (Leave
these

two

wires

connected
together.)
(

)

Prepare the remaining wires of the
cable as shown in Detail 2-7A.
In the following steps, connect the wires
of end A of the cable to the circuit board.
End B will be connected later.
)

Violet to hole AL.
(s, )

Orange to hole AE.
1

Yellow to hole AF.
Green to hole AH.
)

Blue to hole AG.
NOTE:

When

you

install

electrolytic
capacitors, match the positive (+) marked
end with the positive (+) marking on the
circuit
boar
d.
\
1
0
*-
Dual 20 liF electrolytic. Install the
capacitor under the previously
installed cable.
(

)

1200
/./F
electrolytic.
Solder the leads to the foil and cut
off the excess lead lengths.
PICTORIAL 2-7
V I OLc.z...

r
-
Detail 2-7A
1/4"

Yellow wire to hole G (S-1).
Orange wire to hole C (S-1).
Red wire to hole B (S-1).
Brown wire to hole A (S-1).
LONG 4-WIRE CABLE

,A ER'.'
...--
,--B'RED
,
C(ORG)
Doita%
...,..____ 
, --- E
GRN'
F
IBLUI
SHORT 4-WIRE
----
Gi \qt.)
CABLE
RED AND BROW'.
WI RE PAIR
- r
S B
RED
R
(BRNO
0
PICTORIAL 2-8
Refer to Pictorial 2-8 for the following steps.
) Locate a red and brown wire pair and cut the pair to
6".
RED AND BROWN WIRE PAIR
Detail 2-8A
Refer to Detail 2-8A and prepare the wire ends as shown.
Refer to Pictorial'. 2-8 and connect end A of the red and
brown wire pair to the main circuit board as follows:
Brown t
wire to hole R (S-1).
Red wire to hole S (S-1).
Page 13
Connect end A of the long 4-wire cable as follows:
Refer to Pictorial 2-9 (fold-out from Page 15) and position
the display circuit board near the main circuit board. Then
connect the free wire ends of the short 4-wire cable to the
display circuit board as follows:
Gray wire to hole H (S-1).
'(.1) Blue wire to hole F (S-1).
) 
Cut a 9-1/2" length of 8-wire cable.
(•.)
Refer to Detail 2-8B, separate the 8-wire cable into
two 4-wire cables, and prepare the cables as shown.
Refer to Pictorial 2-8 and connect end A of the short 4-wire
cable to the main circuit board as follows:
Green wire to hole E (S-1).
Violet wire to hole D (S-1).
Connect the free
wire
ends of the long 4-wire cable to
the display circuit board as follows:
)
Gray wire to hole H (S-1).
Yellow wire to hole G (S-1).
1 •. ) )
Blue wire to hole F (S-1).
Orange wire to hole C (S-1).
)
Green wire to hole E (S-1). Red wire to hole B (S-1).
\ i/  )
Violet wire to hole D (S-1).
Brown wire to hole A (S-1).
3/4",
BRNI
RED
ORG
YEL
8-WIRE CABLE
SEPARATE THE WIRES AS INDICATED.
h•--1-1/2"
LONG 4-WIRE CABLE
RED
ORG
YEL
3/71*-
BRN
GRN
BLU
VIOL
GRAY,
-1
'13/4"
r•-•
SHORT
4-WI RE
CABLE
GRN
BLU
VIOL
GRAY
SHORT
4
-11I
RE
CABLE
O
6 1/2"
CUT THE WIRES TO THE INDICATED LENGTHS AND
REMOVE 1/4" OF
INSULATION FROM THE WIRE ENDS.
" - 1/4" 
1/4"-el
LONG 4-WIRE CABLE
Detail 2-8B
I
r*-4-314"
VIOL
5 1/2" GRN
1---5 3/4" GRAY.BLU
f~1/2"
i r•-1/4"

Connect the wires from the foil side of the circuit
board. Tug lightly on the wires to be sure they are
soldered.
MAIN
CIRCUIT BOARD1
Page 14
) Connect the blue wire coming from hole J in the main
circuit board to hole J in the display circuit board
(S-1).
Refer to Detail 2-9B and install the neon lamp at
#4 LOCKWASHERdt

V201 on the main circuit board. Mount it 3/8" above
4-40 NUT

the circuit board, solder the leads to the foil, and cut
Detail 2-9A

off the excesslead lengths.
DISPLAY
CIRCUIT BOARD
WOOD -
GRAI
TRIM
FISH PAPER
FISH PAPER
r
K
#6
SOLDER LUG
_A (
#6
SOLDER LUG

_
Refer to Detail 2-9A and mount the display circuit
board to the main circuit board. (Be sure the cables
are positioned as shown.) First, insert the four bare
wires at K, L, N, and P into their corresponding holes;
then install a 4-40 x 1/4" screw, a #4 lockwasher, and
a 4-40 nut as shown. Next, solder the bare wires at K,
L, N, and P to the toil and cut off the excess lead
lengths. (Make sure the display circuit board is parallel
to the main circuit board. That is, the display circuit
board should be sitting on the main circuit board or be
at a uniform height above the main circuit board.)
--
(`.3) Refer to Pictorial 2-9 and route the brown and red
wire pair coming from holes R and S in the main
circuit board behind the display circuit board. Then
FL1C
 NEON LAMP
o
3/8"
e 
e 
V201
MAIN
CIRCUIT
BOARD

I
Detail 2-9B
connect the brown wire to hole R (S-1) and the red
wire to hole S (S-1) in the display circuit board.
N * 4 )
Temporarily set aside the circuit board assembly.
PICTORIAL 3-1

6-32 x 3/8"
FLAT HEAD
SCREW
/ SWITCH
/
4INSULATOR
1 11
O
S ST \\\A
SWITCH
P
WITH
SPRING
RETURN
WOOD-GRAIN
TRIM
Detail 3-1B
efer to Detail 3-1B, remove the narrow wood-grain
im piece from the protective paper backing, center
the trim between the sides of the window, and apply it
as shown.
WOOD-GRAIN
TRIM
Page
15
Locate the 5-1/2" x 1-7/8" fish paper, refer to Detail
3-1C, and cut a
1/4"
wide strip from one end as
shown. Then cut the strip in half.
Detail 3-1A

44 )
Cut a 1" wide strip from the fish paper as shown. Set
this 1" wide strip and the remaining large piece of fish
CABINET TOP

paper aside. They will be used later.
Refer to Pictorial 3-1 for the following steps.
In the following(steps, you will install parts in the cabinet
top.
Refer to Detail 3-1A and install an SPST switch with
spring return at B. (Operate the switch to make sure it
is a spring-return switch.) Use two 6-32 x 3/8" flat
head screws and a #6 solder lug, and be sure the
switch lugs and solder lug are positioned as shown.
Slide a switch insulator over the switch lugs and bend
the lugs as shown in the Pictorial.
As before, mount an SPST switch (without spring
return) at A. Use two 6-32 x 3/8" flat head screws and
a #6 solder lug. Be sure the switch lugs are positioned
as shown. Then slide a switch insulator over the switch
lugs and bend the lugs.
Prepare a 7" length of black wire by removing 3-1/4"
of insulation from one end and 1/4" of insulation
from the other end.
) Pass the 3-1/4" bared end through the solder lug at A
to the solder lug at B. Solder this wire to both lugs.
The other end will be connected later.
Detail 3-1D
Refer to Detail 3-1D and mount the window. Remove
the protective paper backing from the two 1/4" wide
strips of fish paper and apply them to the window and
cabinet top as shown in Pictorial 3-1 to hold the
window in place.
)'‘ ) Set the cabinet top aside temporarily.
34
1
1/ A 0
Z2
1" 
2" 3
" 
4" 
5"
1
6 "