Western Auto Supply Co. D-1003 Schematic

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Product Information:
Model:D-1003
Manufacturer:Western Auto Supply Co. (Truetone)

Schematics Content:

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Page 1:

WESTERN AUTO sUPPLY co. WEL 1?-1003A ; E

BEAR v/lh/

Band switch shown in broodcoli position in whommic and in lhmr wave position in pictorial vipw in imnr init coxnor.

RESISTORS
No. Ohm Wm!! N0. Ohm! Wu".

SERVICE NOTE >>

Volioqes token from :hs diiiarsn! points oi dm circuit io chi-.luis
are meolured with volumn control in maximum polition. ull lubol
in their lockotn und with o voli motor having a resistance o! 1000
uhm. per vols, un an. soo van aux.. 'rhm vouug.. an, almiy mn-
cuiad on ihe voltage chori. ,

CONDENSERS
No Conodiy WM.) Volk! lin. Capacity 0nd.) Vol"

All voiiogex should be mediuer with 117 volu LC. inpu! i0
receiver. Roainrmcs and octqu oonnoctionl of boils ond uunliormm.
electrolytic condmor information and :peoker dau: orc given under

'i'o check ior open by pan. condemn. :hunt nach conde
with onckhor condemn! oi tho lame capociiy and voltaqo roi-ing.
which in lnwwn lc be good uniil ihe dcieciiva unii il locnlod.

SERVICE INFORMATION

D. C. voice coil ruininncc .........
Voice coil impuduncs ul ADD cycles.

8. W. Auburn Cod (Part No. P3198)

Looking ul the connection and cloning ut the chouis in d ciockwiu
diredion ins wrminoln are: No. l. plmo; No. 2. B+: No. 3. grid;

Primury~No. 3 and No. A-ananoo .08 ohm
Secondary-No. 1 and No. Z-Hnlilkmeo. .37 ohm

Oscillator Coil (Pon No. P4194)

Looking ai the mounting lirip and in o clockwise dinciicn starting
o tho chauil. thu isrminaln on: No. l. ground; No. 2. cathode; No. 8..
B.C. Primary-No. l and No. S-Rncilumco.. . .2.9 ohm
BCr Secondary-No. 4 and No. S ~Rodliunoe
S.Wr Sscamdory-No. 2 and No. 7--Rniliunce..

Primary-Blue. plow: rod iii-_mmm

VOLTAGE CHART

All voltages maonured with u 1.000 ohm per voir motor on lhp
300 voli mol.. Line volkuge 117 volt: ALC. Volumo control maxi-
mum ond no signal tuned in.

88K, (In TUBE
Pluto (8) lo ground
Swan (S) to gromid ..

Pluto (3) lo ground . .
Scrum (4) lo ground _.

Pkril (B) ia ground .
Screen (B) to ground

lsr/(AY) TUBE

Plots (8) in ground , .
Scroen (B) io ground .......

Mote (3) io ground ..
Bunn (4) to ground .
Calhon (B) io ground .

Filmed (8) io ground .......................... _ ..........

(C)John F. Raider, Publisher

Page 2:

PAGE 12-28 TRUETONE

WESTERN AUTO SUPPLY C0.
SEVEN TUBE AC SUPERHETERODYNE RECEIVE! \

ISSUE A
"541:" nrouamt und snort wuv. numb

The tuba complement ul this receiver consist! ul
the following tubes.

l-Type SSA7-Pentugrid Converter as First Detec-
tor and Osdllator,

nam asm-Hmm cututt venture nu un 1F um-

Fry" asm-Duplex mud. rrtnae second Dem-

l l-rype ssxv-nuuwte cutoff Periods a. Pint

Fig. l-Top View

PROCEDURE FOB SEEING UP PUSH BUTTONS

Ptmchthemsctstution cull lltturtnbshamtlte ut oi that.

simply

ALIGNMENT PROCEDURE
C Volnmn ountrol-Jiuximum all adjustments. Tha following equipment il requier tor aligning:
l Canned radio chassil to ground port ot signal generator
"thnx mn hm had' _ I An all wave signal generator whidt will provide an tlazuA
I Connect dummy antenna value tn series with generator ,amy canbwted "9nd m gh, is., "mend" a Img?
output lumi . . _
0 Connect uutput meter ww primary ot output trumtormer. ? 0mm "dfmg mf"
O Allow chassis and signal generator to "heat up" lor sev- . N?n`m?mnw mdnve"
eral minutes. O Dummy crntennal-.l mid" 200 mmf.. 400 ohm.
SIGNAL GZNZHATOR .
Grid ot Adiult tu
Rotor full open Two trimmers on top Output
455 Kc' '1 Mfd- ss'xgbgf' (Plum out ot muh) (see rig, n L r. mmm'
x. F' Grid of Rotor tull open 'l'wo trimmer: on top Input Adiu' w
455 KC' '1 md asm tube (mm. out ut mem (see rig. n L r. mmm?
Antsnnn Rotor lull open Tnmmar-Upper left. .
"53? xc' 200 MmL lead (Plates out oi muh) tront oi chassis o'dnm"
Antenna Set dxnl nt Tnmmsr~waer nght. Broadcast
mmm' "4"" Kc 2?" M' mud 1400 xc. fmt of - mm mm?
Antnnna Set ` ct rimmer- n Oidllntovr maximum
5?" KC' 2?" Mm* lead soo xc. of uhm. unter sort.. Pad. ruck dm
Seo Note 'A'
m loo Kc 40? hm. Antenna Botox tull opln Trimmer-_inner lett. Short Wd" Aqua* m
' ' ? lend (Plain out ot meth) front of chassis Oscillator v'
'vsz Antenna _ TximmeraUpper right, Short Wave Adi'm b
16.000 KC. 400 ohm had Tuna llg'nal hom of uhm-i. mlm mmnm
Note 'Mn *be dial buck 'md m 'lightly (Mrk) "Wi Frequency Runge - sas to 1630 und 5,100 'ta mxou Kc
adjust trinmrluntsi the peak at intamity in obtainad. _ *_ '
,mamma nm signal hem 'he ml generate! 1? Woven! m' Power output 2,6 watt-1 undmtorted 4.1 watts minimum.
xevetiugeft uuttou a the Atvc hiem'dm'e PWM? 455 KJ;
Do not bend vnrinble condenser to correct tracking. Power Consumption-60 watts.

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