Noblitt-Sparks Industries, Inc. 1127 Schematic

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Product Information:
Model:1127
Manufacturer:Noblitt-Sparks Industries, Inc. (Arvin)

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 7-29

mam 1127
, y ` Schematic ,Voltage
f, NOBLITI SPARKS INDUSTRIES Regis' cemarts
AvaN HOME RADIO MODEL Hz? F01' Aligmem"
'" "` see Index
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0
0
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fswmimy Cnml Tuned m "ue-e rim. 'Valumz mmol und w num run Phu no 5+ .

(C)John F. Rider, Publisher

Page 2:

vPAGE 7-30 ARVIN
MODEL 1127
Socket,Trimers NOBLITT SPARKS INDUSTRIES

Chassis Q FVNSLSW,

GNGG Tune

G KWG Tune

` QABG Tun G7 z f ISV

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:n Inf >> mm'

(C)John F. Rider, Publisher

Page 3:

ARVIN PAGE 7-31

MODEL 1127

NOBLITT SPARKS INDUSTRIES

umm Mm (6' sumo Pn.

ELECTRICAL DATA

6K7G-R. F. Amplifier

6A8G-1st Detector, Oscillator

6K7G-lst I. F. Amplifier

6K7G-2nd I. F. Amplifier

6R7G-2nd Detector, Automatic Volume Control, 1a! Audio Amplifier
6CSG-2nd Audio Amplifier (Low Frequency)
6N6G-Push-Pull Low Frequency Amplifier
6N6G-Push-Pull Low Frequency AmpliEer
6N6G-High Frequency Amplifier

SZS-Full Wave Rectifier

GGS-Cathode Ray Tuning Indicator

*044055 7'9 power

Depth

Transformer

POWER JUPP! Y

~12 Watts
VoL'rAcn mn Mamet: 105-125 Volu, 60 Cycles

WAT-rs Pom Consummom 150 Watts

1700-5500 Kilocycles

FREQUENCY RANGE:

(C)J0hn F. Rider, Publisher

Page 4:

PAGE 7-32 ARVIN

MODELS 617,617-15, 627,
Alignment

1. Connect the balancing oscillator (456 K. C.) to

\ "grid cap of the lst Det. Connect an output
meter or cathode ray oscillograph to speaker

output transformer or across speaker voice coil.

2. Adjust padder condenscrs 1, 2, 3, 4, 5 and 6
for maximum output in the order designated by
their numbering.

1. Connect the halancin oscillator (456 K. C.) to
grid cap of the 6A8 tube. Connect an out ut
meter or cathode ray oscillo sph to spealier
output transformer or plate olr6N6G tube.

2. Ad'ust padder condensers 1, 2, 3, 4, 5, 6, 7, 8,
and 9 for maximum output in the order desi ~
nated by their numbering until oscillograp
trace shown in Fig. A is obtained.

3. Recheck the adjustment of each padder begin~
ning with number 1 to prevent interlockingof

4. Disconnect oscillator from 6A8C grid cap and
replace grid clip.

5. Connect oscillator to terminal on rear of set
marked "A." Ground oscillator cable shield to
terminals marked "D" and "G," .

i 6. Set the wave band switch to broadcast position.

Rotate the condenser fully out of mesh and ad-

j?sstcpadder number 10 for resonance at 1650

7. Rotate the dial pointer until it is opposite 14-0
on the broadcast band and adjust padders 11
and 12 for maximum output.

8. Reset the balancing oscillator to 600 K. C. and
rotate the tuning condenser until this signal is
received. Adjust padder number 13 for maxi-

NOBLITT SPARKS INDUSTRI ES

l HODELS 611, 617B! 62'7, 627B, and 927.
BALANCING INSTRUCTIONS

output while rotating the tuning condenser
slightly to follow4 the drift in frequency caused
by the change in padder adjustment.

Reset the wave switch to the mid band position
(5500-1750 K. C. range). Readjust the balanc-
ing oscillator to 4800 K. C. and set the dial
pointer to 4.8 on the center dial calibration.

3. Recheck the adjustment of each padder hegin- 10~ Adjust Paddef number 11 fm' resonance-
ning with number 1 to prevent interlocking of 11. Adjust padders 12 and 13 for maximum output.
circuits. 12. Reset balancing oscillator to 1800 K. C. Set the
4_ Disconnect oscillntor from Del_ grid can and dial point to 1.8 on the center dial calibration.
replace grid clip. 13. Adjust padder number 14 for maximum output
5. Connect oscillator to terminal on rear of set '1"th [igniting ummg condegdse; slight? to fod-
rnarked_"A." Ground oscillator cable shield to ow n I' 1_n 'requency cans y e c ange m
terminals marked D and G.
_ _ _ 14s Reset the band switch to the short wave position
6. Set the wave band switch to broadcast position. ( 5.5_185 megacycles) _ Readjust the balancing
llotate the condenser fully out of mesh and ad- oscillator to 16 megacycles and set the dial
Eggpadder number 7 for resonance at 1650 pointer opposite 16 on the short waveband.
' ` 15, Unscrew screw in padder number 15 until pad-
7. Rotate the dial pointer until it is opposite 14-0 der condenser Plates are wide open Then
on the broadcast band and adjust padders 8 and lighten selecting the nrst resonance nolnt
9 for maxlmum output' reached. (The short wave hand will not func-
l 8. Reset the balancing oscillator to 600 K. C. and tion unless this precaution is taken.)
rotate the tuning condenser until this signal is re~ 16. Adjust padders 16 and 17 until maximum output
i ceived. Adjust padder number 10 for maximum is obtained.
l BALANCING INSTRUCTIONS

mum output while rotating the tuning condenser
slightly to follow the drift in frequency caused
by the change in padder adjustment.

9. Reset the wave switch to the mid band position

(5500-1750 K. C. range). Readjust the balan-
cing oscillator to 4800 K. C. and set the dial
pointer to 4.8 on the center dial calibration.

10. Adjust padder number 14 for resonance.
11. Adjust padders 15 and 16 for maximum output.
12. Reset balancing oscillator to 1800 K. C. Set the

dial point to 1.8 on the center dial calibration.

13. Adjust padder number 17 for maximum output

while rotating tuning condenser slightly to
follow drift in frequency caused by the change

14. Reset the band switch to the short wave position

' (5.5-18.5 megacycles). Readjust the balancing
oscillator to 16 megacycles and set the dial
pointer opposite 16 on the short wave band.

15. Unscrew screw in padder number 18 until ad-

der condenser plates are wide open. hen
tighten selecting the iirst resonance point
reached. (The short wave band will not function
unless this precaution is taken).

16. Adjust padders 19 and 20 until maximum out-

put is obtained.

(C)John F. Rider, Publisher

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