Heathkit SW-717 User manual

ASSEMBLY MANUAL
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Copyrighr O 1971
Heath Company
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595-.1 293-04
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Assembly and
of the
SHORTWAVE
MODEL SW -717
O pe ratio n
RECEIVER
HEATH COMPANY
BENTON HARBOR. MICHIGAN 49O22

F-
TABLE OF CONTENTS
INTRODUCTION
CIRCUIT BOARD
Parts List
Step-by-Step Assembly
CHASSIS
Parts List
Step-by-Step Assembly
Chassis Parts Mounting
Subpanel Assembly
Circuit Board and Panel Mounting
Chassis Wiring
Transformer Primary Wiring
Chassis Top Assembly
Front Panel Mounting
INITIAL TESTS
ALIGNMENT
FINAL ASSEMBLY
INSTALLATION 51
OPERATION 53
IN CASE OF DIFFICULTY
Troubleshooting Chart 55
56
59
61
63
63
65
5
7
67
15
17
18
22
24
26
36
36
40
43
45
49
SPECIF ICATIONS
CIRCUIT DESCRIPTION
CHASSIS PHOTOGRAPHS
SCHEMATIC. , .(fold-outfrom page)
CIRCUIT BOARD X.RAY VIEW
RESISTANCE CHART
VOLTAGE CHART 68
WARRANTY .lnside Front Cover
CUSTOMER SERVICE Inside Rear Cover
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3
INTRODUCTION
The Heathkit Model SW-717 Shortwave Receiver is designed
to receive both the standard broadcast and the short wave
bands. The receiver tunes from 550 kHz to 30 MHz in four
overlapping bands.
The Receiver features electrical bandspread for all four
bands, a relative signal strength meter, a BFO control, an
automatic noise limiter, and a headphone jack. There is also
a built-in rod antenna for the broadcast band and provisions
for connecting an external antenna for shortwave reception.
Solid -state circuitry is used throughout. Most of the
components are mounted on a printed circuit board both for
ease of assembly and for reliability. The built-in power
suppfy is transformer operated from either 120 Vac or 24O
Vac and uses four silicon diodes in a full-wave bridge circuit.
Refer to the "Kit Builderc Guide" for complete information
on unpacking, Wrts identification, tools, wiring, soldering,
and step-by-step asemb ly proced ures.
I.IEATHKITT,

CIRCUIT BOARD
PARTS LIST
Remove the bag marked Pack #1 from the shipping carton
and empty its contents on your work table' Check each part
against the following list. The numbers in the "Key No'"
column refer to the numbers in the Parts Pictorial (fold-out
from Page 1 1). To avoid intermixing parts, any part packed
in an individual envelope with a part number on it should be
placed back in its envelope after it is identified until that
part is called for in a step.
After the above parts bag has been removed from the
shipping carton, the remaining parts will be considered to be
part of the Final Pack.
To order replacement parts, refer to the "Price Each"
column and use the Parts Order Form furnished with this
kit. lf a Parts Order Form is not available, refer to the
"Reolacement Parts" inside the rear cover of the Manual'
KEY PART PARTS
No. No. Per Kit PRICE
Each DESCRIPTION
2 .15 2.7 sl, 5% (red-violet-
sotd)
1 .15 22 O (red-red-black)
4 .15 100 Q (brown-black-
brown)
1 .15 470 O (Yellow-violet-
brown)
2 .15 680 O (blue-gray-brown)
2 .15 1000 O (brown'black-
red)
2 .15 27OO Q (red-violet-red)
2 .15 3300 O (orange-orange
red)
1 .15 6800 Q {blue-gray-red)
2 .15 10 kO (brown-black-
orange)
KEY
No. PART
No. PARTS
Per Kit
2
1
2
PRICE DESCRIPTION
Each
R ES I STORS ( 1 /2-watt, l}o/o, unless otherwise marked )Resistors (cont'd.)
1 1-21 1
1 1-22
1 1-23
1 1-24
1 1-60
1 1-102
1 1-26
1 1-27
1 1-31
1 1-33
15 kO (brown-green-
orange)
22 kO (red-red-orange)
27 kO (red-violet-orange)
33 kO (orange-orange-
orangel
68 kO (blue-gray-orange)
82 kO (gray-red-orange)
100 kQ (brown-black-
yellow)
150 kO (brown-green-
yellow)
330 kA (orange-orange
yellow)
470 kO (yellow'violet-
yellow)
1 1-143
1 1-49
1 1-3
1 1-6
't 1-7
1 1-9
1 1-13
1 1-14
1 1-19
1 1-20
1
1
2
.15
.15
,15
.15
.15
.15
.15
.15
.15
.15
HE.A.THKIT'

@
KEY PART PARTS PRICE DESCRIPTION KEY PART PARTS PRICE DESCRIPTION
No. No. Per Kit Each No. No. Per Kit Each
CAPACITORS
Disc
2 21-149 1 .15 2.7 PF
2 21-60 1 .i 5 18 pF
2 21-5 1 .15 20 pF
2 21-9 2 .15 100 pF
2 21-23 2 .15 42O pF
2 21-16 3 .15 .01 uF
2 21-143 4 .30 .05 pF
2 21-95 4 .25 .1 ttF
Mica
3 2o-1 16 1 '45 4oo PF
Electrolytic*
4 25'54 3 .30 10 PF, 1 5 volts
5 25'i46 1 '70 100 PF' 30 volts
5 25-131 1 .85 25Q ttF, 25 volts
*May be marked MFD instead of ptF.
Polystyrene
6 29-5 1 .15 1000 pF
6 29-3 1 .25 27OO pF
Trimmer
7 31-54 2 .55 +-4O pF
7 3x-56 2 .45 1.5-20 pF
CONTROL
I 10-241 'r 1.00 10 kO
INDUCTORS
I 40-487 2 1'00 300 pH peaking coil
(orange-black-brown )
10 4O-1O24 t 1'00 L1 (band A oscillator)
10 40-1025 1 1.00 L2 (band B oscillator)
10 40-1026 1 1.00 L3 (band C oscillator)
10 40-1027 t 1.00 L4 (band D oscillator)
10 40-1028 1 1.00 L5 (band B antenna)
10 4O-1O29 1 1.00 L6 (band C antenna)
10 40-1030 1 1.00 L7 (band D antenna)
DIODES-FILTERS
11 56-26 1 .40 1N191 (brown-white-
brown) diode
12 56-61 1 .95 'l mA, 1.3 V stabistor
(GE STB 620)
13 404-399 3 .60 Ceramic filter
TRANSISTORS
NOTE: Transistors are marked for identification in one of
the following four ways:
1. Part number.
2. Transistor type number.
3. Part number and transistor type num-
ber.
4. Part number with a transistor type number
other than the one listed.
417-91 2 .85 2N5232A
417-224 1 1,40 MPSUOs
417-225 1 1.60 MPSUss
417-118 1 .40 2N3393
417 -169 1 1 .50 MPF 1 05
417-201 1 .50 X29A829
417-222 1 1.00 2N5308
417-240 1 2.40 40673
PARTS FROM THE FINAL PACK
85-452-3 I 2.O5 Circuit board
344-56 1 .05/ft Blue hookup wire
14 391-34 1 .15 ldentification label
1 b 490-E 1 .1 5 Nut starter
Parts Order Form
Kit Builders Guide
1 2.00 Manual (See front cover
for Part number.)
Solder (Additional 3' rolls
of solder, #331-6, can be
ordered for .25 cents each.'
597-260 1
597-308 1
The above prices apply only on purchases from the Heath
Company where shipment is to a U.S.A. destination. Add
10% (minimum 25 cents) to the price when ordering from a
Heathkit Electronic Center to cover local sales tax, postage
and handling. Outside the U.S.A. parts and service are
available from your local Heathkit source and will reflect
additional transportation, taxes, duties and rates of
exchange.

STEP.BY-STEP ASSEMBLY
Before starting to assemble this kit, read the "Kit Builders
Guide" for complete information on wiring, soldering, and
step-by-step assembly procedu res.
Use 1/2-watt resistors unless directed otherwise in a step.
Resistors are designated by the color code and the resistance
value. The symbol fl means ohms, and K or kQ indicates
1,000 ohms. Capacitors are designated by their value and
type. The symbol pF means microfarad, and pF means
picofarad. 1 pF is equal to 1,000,0O0 pF.
Before you install a disc capacitor, remove from its leads any
excess body coating material which would protrude through
the circuit board and prevent soldering the leads to the foil.
Be very careful not to cover unused holes with solder or
bridge solder between foils during the assembly of the
circuit board. Use a soldering iron that is rated at 15 to 25
watts. lts tip should be no wrder tnan 1/1 6" at its widest
dimension; a pyramid or chisel-shaped tip is best. This type
of soldering iron will make the kit easier to assemble, with
less chance of solder bridges occurring. Solder a part, or
group of parts, only when instructed to do so.

START
IDENTIFICATION
DRAWING
CONTINUE
PICTORIAL 1

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coNTTNUE I
PART.
NUMBER
IDENTIFICATION
DRAWING
START
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PICTORIAL 2

r"n"to @
CONTINUE
PART
NUMBER IDENTIFICATION
DRAWI NG
START
PICTORIAL 3