Arvin 650P Schematic

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Product Information:
Model:650P
Manufacturer:Arvin (Noblitt-Sparks)
Description:RE-292

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:

_____\ _ ARVIN PAGE 23-15
MODELS 65013, 65217, 654P, Ch. RE-292

SPECIFICATIONS
FREQUENCY RANGE POWER OUTPUT
Broadcast ................................................. 540-1600 Kc Maximum ,Y '_ VVVVVVVVVVVVVVVVVVV _2 watt
IF VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV 455 Kc Undistorted n ,16 watt
Speaker Size n
TUBES AND FUNCTIONS me m pe ance
1T4 ................................................................ RF Amp. CHASSIS FEATURES
1R5 "Converter Automatic Volume Control
1T4 , _WIF Amp, Iron Core Rod Antenna
1U5 n V. ,.7 , V W YYYYY Audio Amp. Detector ONTROLS
3V4 V H V V Audio Output C
Left knob V On-Off Sw. and Volum'.`
Right Knob V V n n Tuning
POWER SUPPLY
"BH 90 VoltsV V"2 No. 455 Eve!` Ready or Equal PHYSICAL DIMENSIONS
"A" 9 VoltsY Six 11/1 volt size "C" Flashlight Cells Width V n n V 777777 V 11 inches
Height V it V V V 9 inches
Or 115 Volts A.C.01l D12]A Depth v 4 inches
TUNING CONTROL

TUBE LAYOUT PLUG LINE coRD IN
HERE Fon BATTERY

(C) John F. Rider

Page 2:

PAGE 23-16 ARVIN

A. Connect to 117 V. A.C. line and turn set on with volume control at full volume.
B. With variable condenser closed set pointer to end mark on dial back.
C. Connect signal generator high side through ,05 uf or larger condenser to Pin 6 on 1R5 tube.

D. Open variable condenser.

I E. With signal generator set at 455KC, increase output of generator until output is heard in speaker. Adjust
all LF. trimmers until maximum output meter reading is obtained, reducing signal generator output as adjustment
'progresses so that final adjustment is made with lowest input consistent with good signal to noise ratio.

NOTE: After I,F. alignment, the set must be provided with a bottom cover, or test jig which is the equiva-
lent of the bottom cover, and the rest of the R.F. alignment carried out with this in place,

F. With signal generator at 455 KC and- connected to a radiating loop, adjust R.F. transformer coupling con-
denser until output meter reading is a minimum. Final adjustment is to be madewith high signal input so that an
accurate adjustment can be made.

G. With signal generator connected to radiating loop and set to 1650 KC adjust oscillator trimmer on variable
l condenser until output is maximum. Variable condenser is to be fully opened during adjustment.`

H. Set signal generator to 1400 KC and rotate variable condenser' until output is maximum. Adjust R.F. trim-
mer on variable condenser until output increases to a new maximum. Rotate variable condenser slightly to obtain an.
other maximum output. Re-adjust trimmer until output is again a maximum. Repeat this cycle until no further in-
crease in output can be obtained. Final adjustment to be made with signal generator output at sensitivity limit
h given below o'r lower.

I. Set signal generator to 1000 KC and tune radio to maximum output. Read sensitivity. Adjust R.F. section
of variable blades for maximum output.

J. Set signal generator to 600 KC and proceed as in I. above.

K. Set signal generator to 540 KC and make sure that radio will tune to maximum output slightly before varia-
L ble condenser is fuIlv closed.

LOCATION OF PARTS UNDER CHASSIS

o John r. Rider

Page 3:

ARVIN PAGE 23-17

who f

Rider

(C) John F.

Page 4:

PAGE 23-18 ARVIN

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