Allied Purchasing, Inc. 571B Schematic

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Product Information:
Model:571B
Manufacturer:Allied Purchasing, Inc. (Aria)

Schematics Content:

Please note: this content is a computer-generated interpretation of the above schematic and is provided only to help assist you in locating this schematic. For the actual text, please consult the schematic above. Thank you.

Page 1:

ALLIED PURCH PAGE 17-7
MODELS 571A,57lB

ALLIED PURCHASING, INC.

can zo e-o T

n 'UUCD wall

(C)John F. Rider

Page 2:

PAGE 17-8 ALLIED PURCH
MODEL 571A. 5718

ALLIED PURCHASING, INC.

The following equipment is necessary to properly align this chassis:

NOTE: Intermediate Frequency and Oscillator adjustments
A signal generator Which Wil] provide an accuq may he made with the loop disconnected provided a

. . . . resistor of 10,000 to 50000 ohms is substituted to
rater calibrated slgnal at the frequencles listed. close the lstG-r grid 'ci,cuit_ The loop alignment

2. An Output meter` must tbe done with tgihe loolp audAchassils `lzanomited iln
' - era ' ositio ' e a `ne . sing e urn oosey
3' A non'metalhc screwdrwer' isuplelingtx'? loop 1:1113), becsubstituted for RMA loop.
4. Dummy antenna: _ .1 mfd., _ RMA loop.
CONNECTION DUMMY T0 TUNE REMARKS
GENERATOR AT RADIO ANTENNA DIAL TRIMMERS
1F 4.55 ke. 1231;ch grid .1 mfd. HF end lFCtlglflEmlifs Tune t0 max.
1620 kc. Through loop RMA loop HF end Osc. trimmer B Setggg?t of
1400 kc. Through loop RMA loop 1400 kc. Ant. trimmer A Tune to max`

Tube Layout Dial Mechanism

TUB! COMPLIMENT
1--12SK7GT IF Amplifier tube

1-IZSA7GT Oscillator and Mixer tube

l 1--50L6GT Power Output tube 1-3525GT Rectifier tube I
1--125Q7GT Second Detector and First Audio tube

l NOTE: The above glass tubes are interchangeable with their metal equivalent.

Electrical and Mechanical Specifications

Frequency Range ...................................... 540-1600 kc. Power Output (Undistorted) .75 watts
Intemedlate Frequency ----------------------------------- 455 kc* Power Output (Maximum) ....... 1.5 watts

g Power Supply... _,_,105-1'25 volts AC-DC '
Tuning Drive Ratio .......................... 3 to 1

Loudspeaker _

................ Dynamic
3.5 ohms at 400 cycles

'(C)John F. Rider

Page 3:

ALLIED PURCH PAGE 17>>9

ALLIED PURCHASING, MODELS 571A' 57 15

TUBE POSITION 1 z a 4 s 6 'l s
12SA7GT Osc. and Mixer 0 37.5 AC 99 99 4.2 0 24.5 AC 0
125K7GT IF Amplifier 0 24.5 AC 0 0 0 99 12.5 Ac 99
12SQ7GT 2nd Det.~1st Audio 0 0 O 0 0 16 12.5 AC 0
50LGGT Power Output 0 85 AC 91.5 99 0 0 37.5 Ac 5.9
35Z5GT Rectifier 0 117 Ac .112 Ac 0 112 Ac 0 85 Ac 112

NOTE: All DC voltages measured with a 1000 ohm er volt meter from ON-OFF`
switch (-B) to socket contact indicated. Al AC voltages are measur
from ON-OFF switch (-B) to socket contact indicated.

All voltages are positive DC unless otherwise marked.
Volume control full on.
Line voltage 117 volts AC.

Parts Layout
Chassis Models 571A
and 5713

SERVICE PARTS LIST

Symbol Part No. Description Symbol Part No. Description

C73 BC3lB503 Cap., Mold., Paper, .05 mfd. A-2163 Cable, Drive

C>>4 BD410104 Cap., Paper, .1 mfd., 400 v. A-6158 Lamp, Pilot No. 47 Mazda 6.3 v.

C-6 BM'78A4'71 Cap., Mica, 470 mmf. B-51162-1 Shaft, Drive

C-7, 8 BD410203 Cap., Paper, .02 mfd., 400 v. A-51163 Clip, Spring

C-9 C-51155-1 Cap., Variable, 2 Section B-511'77 Bracket Assembly, Dill

C-10 A-894S Cap., Electro., 40-20 mfd., 150 v. ` A-51202 Link, Insulating

`L-l B-51243 Loop, Antenna B-51204>>1 Pointer

lL-2 B-51159 Coil, Osc. Assembly A-51206 Arm, Dial Drive

R-1 BR178223 Resistor, 22M ohm 1/3 w. A~51237~1 Paper Back, Dial

R-2 BR1'7B156 Resistor, 15 meg. 1/3 w. D-51240-1 Cabinet (571-1)

R-3 BR17BZZ4 Resistor, 220M ohm 1/3 w. A-51241-2 Knob I
R-4 BR178335 Resistor, 3.3 meg. 1/3 w. 0512424 Dial, Glass Indicator

R-5 BR17B685 Resistor, 6.8 meg. 1/8 w. C-51247 Back, Cabinet

R-6, 8 BR1'7B4'74 Resistor, 4'70M ohm 1/3 w. A-51249 Strip, Sponge Rubber

R-'7 BR16C151 Resistor, 150 ohm. 1/2 w. A-51331 Spring, Dial Bracket

R-9 B-9051-1 Control, Vol. & Sw. 500M ohm. A-51'787 Spring, Cable

T-l B-51010 Trans., Assembly, 1st IF B-54000 Carton Assembly

(C)John F. Rider

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