Electronic Corp. of America 105, Early Schematic

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Product Information:
Model:105, Early
Manufacturer:Electronic Corp. of America (ECA)

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:

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Record Changer: General Instr-ment Model 205

For Aligmsnt,nee P.15-6

(C)John F. Rider

Page 2:

PAGE 15-2 E.C.A..

looms 104,105,106
Early

ELECTRONIC CORP. OF AMERICA

ALIGNMEN'I' PROCEDURE

The following equipment is necessary to properly align this chassis:

1. A signal generator which will provide an accu-
rately calibrated signal at the frequencies listed.

2. An output meter.
PROCEDURE

1. Mount the loop in a vertical position on a block of wood so that it may be coupled parallel to the set loop.
2. Connect the loop to the output terminals of the signal generator.

4. Any loop similar to the one used in the receiver.

INPUT siGNAL gg; A2125 gmggllf sEr 'DIAL Ar 'TRIMMERS PURPOSE
455 kc. i Close HF end 1 2 3 4 Align IF
1720 kc. Close HF end Set limit of band
1400 kc. 11/2' 1400 kc, Align antenna
TUBE PosrrioN 1 z a 4 s c 7 s

12sA7GT oscillator and Mixer o 24 Ac 84 84 _11' o 125 Ac o
128K7GT IF Amplifier 0 24 AC 0 0 84 35 Ac 84
128Q7GT 2nd Det._1st Audio 0 0 0 0 18 0 1%5 AC
50L6GT Power Output 0 83 AC 108 84 0 35 AC 6
35Z5GT Rectifier o 111 Ac 111 AC 0 111 Ac ss Ac 117

wan M

Dial Mechanism

Models 104, |06

: l l red with a 1000 ohm-per-volt meter from ON-OFF
NME (gwtzsso'?azueontm indicated. All voltages are positive DC unless
otherwise marked.

AC switch on. > H
Volume control in minimum position; no signal.
Line voltage 117 volts AC.

*When a. vacuum tube voltmeter with approximately 10 megohms or higher

f ' g input resistance is used,

Tone on-orF s voLuME

SPEAKER

INPUT
_ 195 Tube Layom i* cuss a new. fuse mfsncmnsngu;

(C)J?nn F. Rider

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