Arvin 751TB Schematic

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Product Information:
Model:751TB
Manufacturer:Arvin (Noblitt-Sparks)
Description:RE-343

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:

FREQUENCY RANGE

TUBES AND FUNCTIONS

5Y3 1. Right knob. Tuning and Phono-Radio
2. Left Itnohn OFF, Volume and Tone

POWEIQ( OUTPLLT PHYSICAL DIMENSIONS
Type` Beam m e Length ._ 15 inches
Undistorted 3.5 Watts Width 75/B inches
Maximum _. 4.5 Watts Height . 9 inches

Ali'proximtate.sensitivities with 117 V. AC line voltage and .5 W. output across voice coil should be: Antenna lead 600 Kc.

. Connect signal generator lead through a .05 uf condenser to converter grid. Open tuning condenser. Set signal generator

. Close tuning condenser and set pointer to left. Open tuning condenser. Connect signal generator to test loop or to blue

. Set signal generator to 1400 Kc. Adjust tuning shaft until maximum output is obtained. Tune antenna trimmer A6 on

ARVIN PAGE 23-21'
MODELS 751TB, 751TM, Ch. IRE-343

ELECTRICAL AND MECHANICAL SPECIFICATIONS

LOUD SPEAKER
Type: Permanent magnet, 2.15 oz., Alnico 5
Size: 9 x 6 inch
Voice coil impedance ....................................... 3.2 Ohms i

CHASSIS FEATURES

Broadcast .......

65156 ~~~~~ Mixebosduaml' Automatic Volume Control
6BA6 ._ ..... I.F. AMP Built~in-Loop

6Av6 Damor _ AVGAR Underwriter's Listed

6v6 >> Output oPERATING CONTROLS

..................................................... Rectifier

ALIGNMEN'I' PROCEDURE

Output meter connection ...... .Across loudspeaker voice coil

Output meter reading to indicate .SW (standard output) . ........................... 1.26 volts
Connection of generator ground lea ......... Chassis
Generator Modulation .................... 0% 400 cycles
Position of volume lk tone control .................... Fully clockwise
Position of dial pointer with variable fully closed. ......... To left

to 455 Kc. Tune LF. Trimmers A1, A2, A3 and A4 for maximum outputr

lead on set loop. Set signal generator to 1650 Kc. Tune A5 trimmer on oscillator section of tuning condenser for maxi-
mum output.

tuning condenser for greatest output. Reset tuning shaft "mil output is again maximum. Retune antenna trimmer. Repeat
this cycle of operations at 1400 Kc. until no further increase of output can be obtained, Keep generator output at a low
value to prevent detuning by A.V.C. action.

Set signal generator to 600 Kc. Adjust tuning shaft for maximum output. Adiust tuning condenser plate for maximum
output if necessary.

(C) John F. Rider

Page 2:

PAGE '23-24 ARVIN
MODELS 751TB,

Res

LOCATION OF PARTS UNDSR CHASSIS

LOOP ANTENNA

regulations. Parts shipments are F.0.B2 Columbus, Indiana.

Schematic Puri
Location Number Description List
I L1 D24777 Antenna Loop Assembly 1.50
C1A, B C24305 Capacitor, Variable, 2 Gang
with Trimmers 2.10

C7, C8 C20065=101 Capacitor, 100 mmfd, 500 V, Mica .30

Mica .20
Electrolytic .65
Electrolytic 1.75
Molded . .50
L2 AC24482~1 Coil, Oscillator Assembly _50
R8A, B C40389 Control, Volume and Tone, Dual
500K-500K ohms 1.80
A191312 Cord, Dial Drive 10 for .25
D40404 Cover, Cabinet Rear, Blonde .35
D40404-1 Cover, Cabinet Rear, Mahogany .35
C24449 Dial, Pointer .30
1524447 Dial, Crystal 2.75
AD40399-2 Grille, Assembly, Mahogany 1.00

mm vnm ABLE
OMF LIGHT usHT P ww
VULUME TUBE LAYOUT swiTcH

HOW TO ORDER PARTS

parts should be ordered by Arvin part number, description and model number of receiver from your Arvin
Distributor. The Distributor will order direct from the factory. All prices subject to changes in accordance with 0.P.S.

Sdlemuh'c Pun
Location Number Douriplion Lis'
A244434 Knob, Tone, Tuning _20
A1935] Lamp, Dial Mazda No. 47 .20
B20138-15 Line Cord .75
A19552 Phono Jack .10
AC24475-1 Pointer, Shaft 81 Bracket Ass'y. .35
R13 C20070-271 Resistor, 270 ohm 10% Iw .15
A241191 Resistor, 270 ohm 10% lw Wire .15
R15 C23970~14 Resistor, 750_ohm 10% 5w Wire .40
R16 A24761 Resistor, 2 ohm 10% l/2w Wire .10
A244354 Socket, Dial Lamp, Left .15
A244351 Socket, Dial Lamp, Right .15
A19551 Socket, AC Phono Motor .25
A24653 Spring, Dial Drive Cord .15
T3 C24776-2 Transformer, Output 1.35
T4 D24440 Transformer, Power 3.75

(C) John F. Rider

Page 3:

ARVIN PAGE 23-25

MODELS '(51TB, 751TM, Ch. RE-343

mire ooo* $2055 x

Rider

(C) John F.

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