Heathkit SP 2A Schematic

Page 1

PAR TS LIST

PAR T PAR TS
N0. Per Kit

DESCRIPTION

PART PAR TS
No. Per Kit

DESCRIPTION

Sockets-Terminal Strips (cont)

Capacitors

21-3 2 10 uuf disc ceramic

21-13 2 500 uuf disc ceramic

21-14 2 .001 ufd disc ceramic

21-31 0 .02 nfd disc ceramic

21-36 3 .002 ufd disc ceramic

23-28 2 .1 ufd 200 v plastic molded paper

23-53 2 .1 nfd 400 v plastic molded paper

23 -59 4 .05 uld 200 v plastic molded
paper

25-4 2 10 grid 25 v tubular electrolytic

25-30 2 20-20 ufd 350vtubular electrolytic

25-35 3 2 ufd 50 v tubular electrolytic

25-41 1 40 ufd 350 v tubular electrolytic

25-44 2 25 ufd 25 v tubular electrolytic

25-71 2 30 ufd 200 v tubular electrolytic

Controls-Switches

10-35 8 500 K ohm Audio INPUT LEVEL

10-79 1 l megohm linear, tapped
LOUDNESS control

10-80 1 1 megohm linear, tapped
LOUDNESS control

10-81 2 1 megohm Audio Tone control

10-82 2 1 megohm Audio Tone control

10-83 1 250 K ohm Audio LEVEL control

10-84 1 250 K ohm Audio LEVEL control

10-88 2 10 K ohm Audio OUTPUT LEVEL
control

10-90 1 100 K ohm linear (miniature)
REMOTE BALANCE control

11-17 2 100 ohms wirewound HUM control

B63-162 1 1 deck - 3 position rotary
SCRATCH FILTER

A63-164 1 2 deck - 8 position rotary
SELECTOR

A63-165 1 2 deck 8 position rotary
SELECTOR

B63-166 1 1 deck - 4 position rotary
FUNCTION

63-178 2 Line switch "ON-OFF"

Tubes-Lamps

411-25 2 12AU7

411-26 2 12AX7

411-106 2 EF86

412-1 1 #47 - 6 volt Pilot lamp

Transformers-Chokes

46-20 1 2.2 henry

54-71 1 Power transformer

Sockets-Terminal Strips

431-1 2 Dual l-lug terminal strip

431-2 2 2-lug terminal strip

431-5 1 4-lug terminal strip

431-6 1 2-lug screw type terminal
strip

431-15 1 1-1ug terminal strip

434-16 2 9-pin wafer tube socket

434-20 5 110 v 2-prong socket

434-76 4 Triple phono socket

434-78 6 9-pin socket, printed
circuit type

434-82 2 Double phono socket

434-87 1 Socket for type #47 PILOT LIGHT

Plugs-Covers

206-93 2 Switch cover

432-17 1 Connector female

432- 18 1 Connector male

432-19 2 9-pin molded connector

438-4 8 Single prong phono plug

438-6 2 Octal plug

440-3 1 Cover with insulating linear

440-4 2 Vinyl plug cover

Hardware

250-2 12 2-38 x 5/16" machine screw

250-8 36 #6 x 3/8" sheet metal screw

250-9 46 6-32 x 3/8" machine screw

250-18 2 8-32 x 3/8" machine screw

250-29 4 6-32 x 3/ " machine screw

252-1 12 3-48 hex nut

252-3 61 6-32 hex nut

252-4 2 8-32 hex nut

252-7 28 3/8" - 32 control nut

252-37 1 9/32" - 32 nut

252-39 1 1/4" - 32 control nut

253-1 1 Flat fibre washer (small)

253-10 28 3/8" x 5/8" control washer

253-15 2 Flat fibre washer (large)

253-16 2 Fibre shoulder washer

253-46F246 Steel panel washer (remote
control)

254-1 57 #6 lockwasher

254-2 2 #8 lockwasher

254-4 22 Control lockwasher

254-7 8 #3 lockwasher

254- 14 1 #12 lockwasher

259-6 1 #3 solder lug

259-11 2 #6 spade lug

261-13 4 Plastic feet

Cabinet-Chassis-Associated Metal Parts

90-M87 1 Cabinet shell
100-M244 1 Front panel assembly
200-M177 -1 Power supply chassis

Page 2

PART PARTS
Per Kit

NO-_

DESCRIPTION PART

No.

PARTS
Per Kit

DESCRIPTION

Cabinet-Chassis-Associated Metal Parts (con't.)

ZOO-M178
ZOO-M189
202-M23
202-M24
204-M202
205-M96
205-M98

Knobs

462-70
462-71
462-75
462-79

84-1
84-8
84-9
85-20

Amplifier (A Channel) Chassis 57-13 2 35 MA selenium rectifier
Amplifier (B channel) chassis 73-1 1 3/8" rubber grommet
Chassis end plate (left) 89-1 1 Line cord
Chassis end plate (right) 95-1 1 Rubber remote control cone
Hum balance control bracket 206-30 1 length 1/8" spirashield
Amplifier chassis cover plate 206-68 6 Tube shields
Printed circuit cover plate 207-4 1 Plastic cable clamp
340-2 1 length Bare wire
343-3 1 length Shielded cable
Large knobs (concentric) #22 plastic jacket
Small knobs (concentric) 344-1 length Hookup wire
Small knob flatted shaft 346-1 length 1/16" sleeving
Small knob flatted shaft 346-7 length Sleeving #5
(remote control) clear plastic
347-1 1 length 8 conductor cable
Packaged Electronic Circuits-Printed Circuit Boards 347-9 1 length 3 conductor shielded
Tone control network 390-47 1 A channel input label-adhesive
Compensation network 390-48 1 B channel input label-adhesive
Loudness control network 390 -49 1 Power supply label-adhesive
Circuit boards 391-6 1 Logo "Heathkit" black and gold
413-4 1 Clear red jewel
453-68 1 Lock shaft (with identifying ring)
453 -69 1 Lock shaft
455-28 2 Bushing
595-296 1 Manual
Resistors
1-9 2 1 K ohm 1/2 watt (brown-black-red)
1-10 . 2 1.2 K ohm 1/2 watt (brown-red-red)
1-13 2 2.7 K ohm 1/2 watt (red-violet-red)
1-19 2 6.8 K ohm 1/2 watt (blue-gray-red)
1-21 3 15 K ohm 1/2 watt (brown-green-orange)
1-25 2 47 K ohm 1/2 watt (yellow-violet-orange)
1-26 14 100 K ohm 1/2 watt (brown-black-yellow)
1-29 1 220 K ohm 1/2 watt (red-red-yellow)
1-30 2 270 K ohm 1/2 watt (red-violet-yellow)
1-33 4 470 K ohm 1/2 watt (yellow-violet-yellow)
1-35 12 1 megohm 1/2 watt (brown-black-green)
1-37 2 2.2 megohm 1/2 watt (red-red-green)
1-44 4 2.2 K ohm 1/2 watt (red-red-red)
1A-2 2 1 K ohm 1 watt (brown-black-red)
1A-5 1 22 K ohm 1 watt (red-red-orange)
1A-7 1 47 K ohm 1 watt (yellow-violet-orange)
4-2 2 100 K ohm 1/2 watt (low noise)
4-3 2 330 K ohm 1/2 watt (low noise)

1

1
1
1
1
1
2

HMODC)

2

2
2
2

Miscellaneous