Case Electric Corp. 701 Schematic

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Product Information:
Model:701
Manufacturer:Case Electric Corp. (U.S. Radio & TV)

Schematics Content:

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Page 1:

JUMPER IN
SPE KER PLUG

NJ 4.00 Fun

NEW W\ m

Page 2:

CASE

m0 rirst Deteetnr sud converter
'UN IP Amplifier
'rye- 'll second neteeter Ave end A! Anp1ifier

socket: are marked tor the proper tubel.

Comet align-ent is of extreme importance in ell law s
eoivare. 'me receivers sre properly aligned st the :eatery sith
FNGilion .quipllnt Ind Nllimrlt thllld not DO ISUBI'PWG by
the service technician until all other esunc or rsulty opera-
tion are corrected.

In order to properly reelim the reoeiver tha following
equipment ia neceoeery;

1. A signal generator whleh will provide sn seeui-stely
oalihrdted sigzal at any rrequenoy from 26 kiloeycles to lB
megaeyelea. me generator should. have adjus able algal output.

2. An output ludio voltmetei- or the low voltegu type tc be
UDMSUCQG luroel tho moving uoil of the epellml'. 'RAS- lhould be
ol Chl! of providing l readablo deflootioli for relltivlly lol
W put 19181! to .Void tho offaobl o! overlold.

c. in insulsted er nen--etsnie ses-es driver res- tns se~

enroll the louA

l. connect une

'lure the ssse send ssiteh

in blob) to its loft hand or cmlntlr-tlock'ill position. mil
trfsgs the red indie-ter ree-presesest bend te the top. sers
the 101m Bontrol to it! llxilmli Petition.

2. penneet the te t eseillstes ground td snsssis .nd the

'hot" lend from the te uloillatcr to the grid of the 61,7 een-
vertel" tuba through a .Brion .1 lid. eondenler'. Set tent oscil-

eeles) er seennd In trensferner, me, sdiseent te reetiriee tune
(type so) ts minus eutput, sedueing eutput er test oseillster
te keep the meter reading on seals se augment preeee

4. Adjust alignment sore-r 511, (312, nf first I! tranc-
ferssr, pl, (dineetly behind tuning eendenses) to usxisus output

5. Roadjust these trimmers ter accurate slip-mont. Always
use the lowest possible output from the test oscillator to pre-
clude the possibility of lutomltic 'Chill Hontl'cl lotion 85ml-
ing proper sdgustssnt.

Conneet east oscillator to antenna and ground terminal-I a!
the receiver using a .06025 Ira. condom-cr in serie. with tha
antenna terminal. 'ith oscillator set at 262.5 ke adjust ant-
anns trap alignment sore' ce, for mini-un signal increasing out-
put ot test oscillator as s .ini-um ia reanhed.

l. 'ith test osoillatnr connecting antenna poet through

2. est disl sesle, heur sud uinute hsnds, te e e'eleex
snsn gen; epndensez` is fully seshed st ssxisus espseitsnss.

5. SB! dill to elliot-tion llrk 1400 kd "ling hour hind to

indioste frequency (no further stteutieu used e psid te posi-
tion o minute hand shieh is used surely fur een ienee in lug-
ging ions oy 'nn'). Adiust nresdesst es instep tri-er

eondsn r cle. ter ssxisus output seter resdins. xr it is :dune
thst ne peeks eesur sithin the renee ef the tr _er sstiun use
the one in snieh the trissssr is in its lessst espseitduee er

i. idjust deteeter input tri-ner ca, te s sexi-un.
s. sdiust the intenns stsge tri-es- ce, tu s suisuu.

5. Set tent till-tux' to 500 ko und tune in the eipll,
then sejust brosdesst osoiilstur psdder aio, for maximu- output.
'Bli- puddex' in mounted under the ehlleie at th. aid of thh RP
"dtolh" Rook the condenser buck and forth l degli oi' blo in
order to ohtlin prow! llxilml.

ELECTRIC CORP.

CASE PAGE 7`

7. Rene t the Moo xt sdiustments desdrited undere 4, a,
rur greetez- sceursey. :me output et the tes't asain tor should
slssys be kept st the lusest output shien sill silos sufficient
neter swing since this sssures pester eeeursey or sdJustnent.

shox-t love '5" er 'Green' Bend'

l. qurn the ssve hsnd ssitth tu the "p- dr 'nreen" pesi-
tien. pesve the eseillster ednneeted us sbeve put with its eut-
put set te sooo ke snd the ,eooos nrd. eendenser replseed ty s
ooo ohn nesieter. set disi eesle te e se en tee green es- uido
esnd, sdJust -B' bend essillster trusses condenser als, fes- sse-
isun output ebsenins ss eerere thst tne prepen peint eeeurs st
the uininun er seunter-eleeksise pesitien er the see-es if we
peints ere reund.

2. Adjust deteeter input "p" bend trimer eendenser do,' te
s merisun while rocking the tuning condenser slightly for dsx-
e. Adjust intenns stsge "s" esnd trimmer ce, ren nssisnss

4. set the test aeeilistor te 2000 ke end tune in the sir
'inun nutput while retiring tuning eendenser ss deseribed sbeve.
s. aepeet operstiens 1, 2, snA 5 tc s sure precise align-

short lsve 'c" or 'yellow' Bend '

l. with test osei11etor eonnooted ssme se for "B" bsnd end
set tn lsooo kc (ia me) set disl sesle to 18 sw on inner er yel-

2. Adjust '0" bend oscillator trimming condeneer 017, for
maxim-um response. Use lower capacity or counter-alumni" re-

s. sd ust "e" bend deteetnn input tnimer aio, ta s uss-
*imun, "seek ng" tuning sdjustsent te ootsin greetest output.
for maximum re-

4. Adjust sntenns 'c" bend trimmer cv,

spouse .

'me eu useleent ot the detector input trimmers on the "5" end 'c'
bsndd y the procedure outlined above is advisable ss aontrsstee
sith the oeusl method dr trimming sithout resting the tuning sd-
5ustment beesuse slight couplings through the tube eireuits tend
to dilwth the oluillltor freqlleney ln tha deveotox' ie tuned.
This procedure should bo fullo'le on my type of ?11 'Ave rl-

sise te felles the sensnstie disprsn in sn orderly fsshien sesrt-
ing st the entenne end yeund eenneetiens snA puede-ding te the

'rnusmauu us Av melt
te moo lt 0 es noe xc

:le coo

See Ceee Pogo 7-16,for Dial Drive note..

(C)John F. Rider, Publisher

Page 3:

CASE ELECTRIC CORP.

REPLACEMENT P1515 11m PRICE LIST
115016 Bel: Dr1vs .21 115006 Pulley Idlor "nemnly ,15
315045 mul .94 41.5072 Planetary 155mny .40
15410 Book Instruction .15 R5 R4 115555 Resistor clndohm .25
15070 0110 01-10 (011" Tube) ,01 1120 15511 nanlnor cuban 50,000 1/1 won .oe
15071 clip orld (Metal Tube) ,01 R14 Rl? 15512 Resistor cnhon 250m 1/4 watt .02
15550 01mm 1noen51y ,26 55 RB |115 R10 15515 Resistor carbon 100|; 1/4 won .os
01 05 05 07 Ll 15271 0011 1nconne 1n shield sold ln 5.55 R9 me nle 15520 Resistor cnrnon 500m 1/4 watt .05
1 05 09 010 1.2 15272 co11 50550001- ln shield not; 5.44 H6 15625 Helium* Girbon 20W 1/4 wltt .08
1 017 015 015 1.5 15425 0011 090111-001- ln shield or 5 2.75 R7 R10 15542 Round:- cdrbon 1000 1/4 watt .05
1 115059 05rd unoenmnc .55 R11 15502 Kenner carbon 1511 2 wuts .16
1 01 02 05 015070 condenser varlnme 5.21 1119 16501 neu-wr cnrbwn 25m 1 was: .11
` 015 019 115259 condenser variable Pmdder 1.05 515041 Renaming spring for Bezel ,la
1 020 115515 00nd. sloocrolycm 10 lrd 400V 1.07 415020 shore Drive .15
' 025 029 15905 cond. no. 100 md .11 15095 Shield 0?" 'NM (Long) _12
\ 057 15911 cond. |1101 4500 lmfd .57 15094 shield 0010 Tube (shox-t) .11
1 040 15915 cond. '10| 100 lmrd .11 15415 shielded ln 1F Place und .09
i 055 15921 cond. non 1250 umfd .19 15417 smelded 595 plate Lend .11
\ 051 15919 cond. no- 50 md .11 15415 smolded 550 Grid und .15
054 15751 cond. 111ml" .25 1nd 20m .15 15420 shielded volA a. 75 arid mod .20
022 025 025 050 15752 00nd. 'mlmln .05 nerd 20W .12 115055 soak" Dial Lamp (Left Hand) -11
052 can 15755 05nd. Tubul- .002 ufd 5007 .ll 115054 soolm: mal Lump (lush: mend) .ll
\ 024 027 15755 cond. Tundlnr .05 11rd 4007 .12 15052 socket 59051151- _10
' 026 655 15757 60nd' Tubular .1 Mfd 400V .14 15065 SDOKQU SO '0g
' $159 15754 Condenser Tubulll" .01 mid QOOV .11 15064 5001581: 42 `11
. 050 15750 condennor Tubular .os nrd 5000 .10 15179 sookoc 017 _11
j nz 115110 control ron.. .70 15055 sooldez 5m _14
3 nl 115115 control voldno .as 15000 sookec 555 ,11
115051 5555155 qofmin-l .15 15004 socket ers _14
15527 Dial k Piper Strip CASE 1.96 '15055 SPI??T Br!!! (PUY ChlBIXB Rubber) .02
15528 Dill a. paper strip 111111011000! 1.96 15405 spedloor 5" 5,27
515044 011" convex .25 115017 Spring "onion ,og
115057 xnob Drive .14 015256 slleoh Range 3.14
115095 Knob snifon .25 15125 swxooh Ronge pulley a, svn-1% _65
115060 noob vo1ume a. Tone .15 011 012 'rl 5152084 Trnnofonder Input IF 1.42
15009 uno D111 5.5 v Baynat 'rype .19 015 014 12 515209-4 rrnnsformr output IP 1.65
15129 uno Din 11.0.1515' .aa 15551 nonofonmn power so oydle 110V 4.75
115002 Lug cround gloom-dyno .01 515:00 nun-form" Pown- 25 oyelo llov 7.55
115052 uonnoing 01.1.11. Rubbers .05 1950 woonor 5515 (small Knob) .01
> 315252 no" ninl Booking .05 1051 'nonex- roln (owner Know) .01
115025 Pointer (111mm) .01 12111 'moon mroding no" .02
115004 pointer (wang) .04 12105 'unal- ploln 51m .01
TRANSFORMER I RB C36
PRN BLACK Jr
HEATERS: GREEN C 25 R7 CZ 5
RBL% GEM 025
volumes 031m
' Mononononco non olenonoo :o :mould-1000 ohm per vol: nom Line voleoge~115v 10.
RF negoclvo gnld 51" 5.0 volts ,
ens nognlve grid on: 20.0 volt! ,
AC--RKS Shah 1.718% 01' 'Pebbifier to center tal 550.0 Volts
'rot-1 onn-onc droln 52 no. Eudnop nod-ooo speaker :1915 95.0 volce
np 1noliriar one 5.5 0.0 125.0 0.0 255.0
2nd mentor 1vc-1n 1np11r1or 75 5.5 0.0 0.0 90.0

(C)J0hn F. Rider, Publisher

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