Allied Purchasing, Inc. 554 Schematic

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Product Information:
Model:554
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 PURCHASING, INC.

can oz sl-o a

VII COG 91'!

ALLIED PURCH PAGE 17-1
MODEL 554

c gig

TO ALL HEATER "LAMENTS-

I DIAL Lian'

7:04 .os urn

ALL SWITCHES SHOWN IN COUNTERCLOCKWISE POSITION, SHAFT END VIEW

ALL TUBE SOCKETS SHOWN FROM PIN END VIEW.

W() MOTOR

(C)John F. Rider

Detrola Model 550. RCD.CH.15~1

Page 2:

PAGE 17-2 ALLIED`PURCH

MODEL 554 ALLIED PURCHASING, INC.
AUGNMBIT PROCEDURE
The following equipment is necessary to properly align this chassis:
1. A signal generator which Will provide an ae- 2. An output meter. _
curately calibrated signal at the frequencies 3. A non-metallic screwdriver. `
listed. 4. Dummy antennar- .1 mfd. - RMA loop.
CONNECT GEN- DUMMY INPUT SIGNAL SET DIAL
ERA'roR 'ro ANTENNA FREQUENCY BAND AT TMMMERS PURPOSE
GSA'YGT grid .1 ~mfd 455 kc. Broadcast HF end D E F G Align IF .
6S_K7GT RF grid .1 mfd 1620 kc. Broadcast HF 'end C ` Set limit of bandl
6SK7GT RF grid .1 mfd 1400 kc. Broadcast 1400 kc. B Align RF
RMA loop Through 1400 ke. Broadcast 1400 kc. A Align antenna
loop

we mum , M

Tube Layout Dial Mechanism
TUBE COMM.le U
1_68K7GT ................. RF Amplifier tube 1-63Q7GT ............ Detector-AVC-lst Audio tube
I-GSA7GT .......... Converter tube 1-6K6GT ...................................... Power Output tube
1-6SK7GT ..... mIF Amplifier tube 1-5YSGT ................................................ Rectifier tube

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

Electrical and Mechanical Specifications

Frequency Range ______________________________________ 540-1600 kc. V.C. Impedance..A ..3.5 ohms at 400 cycles J.
Intermediate Frequency .................................... 455 kc. Power Output (Undistorted) __________________________ 1 'Watt V
Power Supply __________________ 105~125 volts, 60 cycle A.C. Power Output (Maximum) .............................. 4 Watts
Igpeaker ........................................ Electrodynamic Tuning Drive Ratio _______________________________ .1.4% to 1

(C)John F. Rider

Page 3:

ALLIED PURCH PAGE 17-3

ALLIED PURCHASING, MODEL 554
SOCKIT VOLTAGES
TUBE V PosnwoN ' 1 2 a 4 5 s 1 s
6SK7GT RF Amplifier 0 0 0 . 0 0 93 6.3 AC 270
SSA7GT Converter 0 6.3 AC 270 113 -7.5 0 0 0
6SK7GT IF Amplifier 0 9 0 0 0 93 6.3 AC 260
6SQ7GT Detector-_AVC-lst Audio 0 0 0 0 0 88 6.3 AC 0
6K6GT Power Output 0 0 250 270 0 175 6.3 AC 19
5Y3GT Rectifier 0 310 0 290 AC 0 290 Ac 0 310

NOTE: A11 voltages measured from chassis to socket contact indicated.

(R) (R) DC voltages measured with a 1000 ohm-per-volt meter.
G (R) All voltages are positive DC unless otherwise marked.
0 Q O Volume control full on. No signal.
(R) Tone Control in clockwise position.
(R) (R) Line Voltage 117 volts AC.

Parts Layout
Chassis Model 554

SERVICE PARTS LIST
Symbol _ Part No. Description " Symbol Part No. Description
C-4 BCBIBEOS Cap., Molded, ,05 mfd., 400 v. ' A-2163 Cable, Dial
(7-1, 3, 10 BD210503 Cap., Paper, .05 mfd., 200 v. A-3123 Clamp, Cable
(7-11 BD410103 Cap., Paper, .01 mfd., 400 v. A-9285 Lamp, Pilot, Mazda No. 44
C-1'7 BD410203 Cap,, Paper, .02 mfd., 400 vv A-51163 Clip, Spring
C-IS BD610502 Cap., Paper, .005 mfdl, 600 v. '17-1 0-51502 Transformer, Power
(7-14 BM78A221 Cap., Mica, 220 mmf. | SP-l C-51512 Speaker, 5" Dynamic, 485 ohm
R-14 BRISEEGI Resistor, 560 ohm, 1 w, l L-3 Coil Assembly, Osc.
R-2, 8 BR1'7B102 Resistor, 1000 ohm, 'Ei w. ! ~ Shaft, Drive
R-5 , BRl7B156 Resistor, 15 meg., IA; w. B-51591 Spring, Dial Bracket
R-3 11111713223 Resistor, 22M ohm, '?4 w. A-51787 Spring, Cable
r R-'i BR17B335 Resistor, 3.3 meg., l/s w. 8-55300-1 Channel, Rubber
R-ll BR17B685 Resistor, 6.8 meg., 'A w. SW-Z 13-55500-1 Switch (Radio-Phono)
R-b BRI7E222 Resistor, 22M ohm, 1 w. R-15 B-55550-1 Potentiometer, 500M ohm
R-4 8R17G153 lesistor, 15M chm,`2 w. R-10 13-55575-1 Potentiometer & Switch, 500M ohm

Order parts not listed by specifying (1) Part Name and (2) Model Number (include number following dash).

(C)Johx1 F. Rider

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