General Electric Co. 200 Schematic

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Product Information:
Model:200
Manufacturer:General Electric Co. (Old RCA)

Schematics Content:

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Page 1:

MODELS YR.B67~1,YRB67~>>2,
MODELS zoo,zos,zos
GENERAL ELECTRIC CO.
PARTS DESCRIPTION LIST
MODELS YRB 82-I, YR! 67-'I, YRB 67-2
Symbol Descripdon Symbol Description Symbol Description
C1 Ant. trimmer condenser C14 .05 mid paper capacitor R2 2.2 megohm carbon resistor
CIA Tuning condenser, ant. section C15 .05 mfd paper capacitor R3 Volume control .5 megolam
CZB Tuning condentor, csc. section C16 .05 mid paper capacitor R4 4.7 megohm carbon relaator
CJ Oac. trimmer condenser Cl7 .01 mfd paper capacitor R5 470,000 ohm carbon resistor
C8 220 mrnfd mica capacitor L1 lsi LF. transformer v R6 410,000 ohm cl\'b0I'|_ resistor
CD .005 mfd paper capacitor L2 Znd 1.17, transformer R7 150 ohm carbon resistor
C10 220 mmfd mica capacitor L3 Loop assembly R8 2700 ohm carbon resistor
C11 .01 mid paper capacitor L4 Oscillator coll R9 18 ohm carbon resistor
C12 .02 mid paper capacitor P1 Pilot lamp R10 470 ohm carbon resistor
C13A 30 mld electrolytic capacitor T1 Output transformer '
C1313 30 mfd electrolytic capacitor 111 22,000 ohm carbon resistor
. REPLACEMENT PARTS LIST
MODELS YRB 82-'I, YR! 67-I, YRB 61-2
Sloclr No; Description Sioclr No. Description
SPECIAI-|159 G-5 REP'-AIIEMENT PARTS SPECIALIZED o s ssrlacsr/leur rams (c )
SAB 004 Blok cover. Models YRB 67-1 and 67-2
SAB ooo Book cover, llsodol rm; sz-1 ~ ?'*"? gg; ?""'??"'""~ ya!-F~
sau ool c-bloel. Model YRB sz-l SEO om .,.""'f?""">> at U'-
sav nos Cabinet, Model YRB 67-1 SWL om Pm" ?""_?'~ ?" P"'
.sAv als Cabinet. Model YRB 67-2 ?"" ??'
gaplcrgof, :liter elE?grol)g;% 30-30 mid 150 volt, C13A, C133
soc ool colin, om ,l,;v,'i.,,d UNIVERSAL o-s asvlacsmsnr rams
SDK U02 Knob. Model! YRB 61-1 and 67-2
SDK 010 grub, Model YRB B2-1
SDP 001 inter, dial scale , UCC 039 Capacitor, .005 mid paper, C9
SDS 004 Dial scale, Models YRB 67-1 and 67-Z UCC 040 Capacitor, .01 mid paper, C17
SDS 006 Dial scale. Model YRB 82-1 UCC 041 Capacitor. ,02 mfd paper, C12
SHC 001 Hair pm cotter for dial drive UCC 045 Capacitor. .05 mfgnpaper. C14, C15, CI6
SIP D02 Connector, femlle Io speaker UCU 1036 Capacitor, 220 m d mica, C8, C10
SJ S 001 Pilot lamp socket UDL 013 Pilot lamp. Mazda Sl
SJ S 003 Socket, octal tube UOP S26 Speaker, 5% inch PM dynamic
SIC 001 Coil. oscillator URD 007 Resistor. 18 ohm $6 watt carbon. R9
SLL 001 Loop, antenna URD 029 Resistor, 150 ohm $6 watt carbon. R7
SMF 002 Snap button URD 041 Resistor, 470 ohm 36 watt carbon. R10
SMF 003 Fastener, back cover to cabinet URD 081 Resistor. 22,000 ohm K watt carbon, R1
SMS 001 Spring, dial drive drum ITRD 113 Resistor, 470,000 ohm 56 watt carbon, RS, R6
SMU 001 Shaft. dial dnvc URD 129 Resistor, 2.2 magohm $4 watt carbon, R2
SMW D01 Pulley, dial drive URD 137 Resistor, 4.7 megohm M watt carbon, R4
SRC 003 Volume control, 0.5 megohm with power .switch URE U59 Resistor, 2700 ohm 1 watt carbon, R8
REPLACEMENT PARTS LIST-MODELS 200, 203, & 205
ART NO. SYMBOL DESCRIPTION PART No. SYMBOL DESCRIPTION
U"'V'*""~ """?E""'"' "MTS sreclauzro ssrlacmsnr rants (cool/al l
UCC-U39 C22 CAPAC1TORf,005 mid, 600 v,` paper
UCC-040 C25 CAPAC1'[`OR~.0l rnfd, 600 v, p:'per RAX-001 l PULLEY-Idler pulley assembly
UCC-O48 C5 CAPACITOR--0.1 Infd, 600 v, p per RCC~0l3 C19 CAPACITOR-0.1 ml-d, 200 v, paper
UCU-020 C6 CAPAC1'1`OR~-47 mmf, 500 v, mica RCC-040 CI6, 17, IB CAPACITOR-.01 mid, 600 Y, lllller
UCU-028 C13, 15 CAPAClTORfl00 mmf, 500 v, mica RCC-045 C4, 11, 20 CAPACI'l`ORf.0S mid, 600 v, paper
UCU-032 C14 CAPACITOR *ISU mmf, 500 v, mica RCE~|J3V7 C21A, 21B CAPAClTOR~50-50 mfd,150 V, dry electro!
UCU-D40 C12 _ CAPAClTOR~33U mmf, 500 v, mica RCT-U15 CIA, 1B CONDENSER--Tuning condenser (includ
UlC>>00l CEMENT- Loudspeaker cone cement C2 and Cc)
UOP>528 --->> . ln. - _ ~ nve rum an ll ll assem
UOX-001 CONEffR2placemel\t cone ki! RDE-001 ESCIITCHEON-Dial escutcbeon flllodils 203
URD-029 R14, 22 RESISTOR---150 ohms, M w, carbon 205)
URD-041 Rl, 11 RESISTOR' - 470 ohms, M w, carbon RDG-002 PLATE~Dial back plate assembly
URD-057 RD, 15 RESISTOR 1000 ohms, % w, carbon RDK-006 KNOB- Control knob
URD~067 R2 RESISTOR 5600 ohms, 54 w, carbon RDS-030 SCALE--Dial scale (Models 203, 205)
URD~osl R3 RESISTOR -22,000 ohms, 95 w, carbon RDS-03| SCALE-Dial scale (Models 200, 201)
URD-089 R6, 7, 21 RESXSTOR -47,000 ohms, 9? w, carbon RHM-004 CLlPfSll?ed CIID lor dial scale (Model 200)
URD-105 R18 RESISTOR -220,000 ohms, $4 w, carbon RHM-005 CLIP-Speed clip for dial scale /Models 203
URD-lla R4, 12, 13 RESISTOR--470,000 ohms, M w, carbon - 205)
URD-129 R5 Rlssrsron---2.2 meg, yg w, carbon RI-IM-016 CL1P~0sc. coil mcg. clip
URD-|39 R10 RESISTOR ~s.o mcg, M w, carbon
uRl-'-049 R17 RESlSTORf1000 ohms, z w, carbon RJS4103 'I'lH3%A_??JCKET-octal base tube socket
SPECIAUZED REPLACEMENT PARTS ;`gg?l?1QC??'l`T0ctaI base tnbe\soclre!
RAB-_00l BEAM\;#-Sn(/&0;P|;T -zggbgragt back and loop as- RLC-021 T4 COILff0scilla?or coil] S ck"
Sem Y 0 BS , 7 RRC-002 RB, S1 VOLUME C N f- _ '
RAB-D03 BEAM-A~SCOPE-'Cabinet back and loop os- includes o<?we-flgellicoz 0 meg P?'e""?'
Rav-ozs CABINET -V woloof wood (Model zosl RTL-029 'rz TRANSFORMER -zod 1.17. transformer
RAV-ozo CABINET Blonde wood (Model zosl 1110-cos 'ra TRANSFORMER-oolool transformer
RAV-027 _ A CABINET -Maple wood (Model 2051 RWL-009 Pl CORDAPower cord and plug
(C)Jo1m F. Rider

Page 2:

PAGE 21-4 CHANGES
General Electric 143 General Electric 200 Serles
The connection between terminal number 4 These models appear on pages 18-1.9 _
of the 2nd of trsrrsforroor to the s,zoo_olrm through 18.20 oy Rider! Manual Volume M_IT,'f;'f;'(?fi';1l;l`;l_l;l;fe as Model AMP
resistor RZ is connected at the intersection XVIII. The following changes should be 101A which appears on pages 174 and N?
with the B+ line. Late production receivers added to the parts list: _ r
, , V . . of Rzclcfs Manual Volume XVII, except
incorporate the following changes ln order to RHM002 Chlir fl" m?"'1'>>U18 5Pe8kEl' fm. the follhwin chan e in B is V I e
paper capacitor has heen added in parallel with RHM-004 Clip, dugl scale mmmtms clip Qef- Pg" _ _
resistor R9, This capacitor has a reference f?l1 PIN-WC 9353199 111013215 Af- 50- D9S'*'HP'1?"
rrrrrrrlrrr of C16 and stoolr number Ucc_0-ts. RHM005 Clip. dial scale mountins clip 0 2?0129G4 Cavwlofr pf-vert 003 uf,
Capacitor cs has been Changed to s o.1_rf, for wood cabinet models 400 v~
200-volt capacitor, stock number UCC-050. _
The following parts lrsro been added to ,Mg 0, Rwe,.??,,mml Qhgume XV Mix Model 04WGj672 appears on woes 12-S1
provide replacement ofthe battery cover plate el 250 a em on a es 166 Umm A 162; 'Wi 19459 U! Rldefs Mdmwl Vvllww XII-
and assembly Dam; DJ. Ridgl; Mnnug "Volume XV? Add Models A and B are the same as that
ai. No. norrrrprrorr ' _ model which appears in Volume XII.
?HEUR'ggg EW" .?2iEUR'bPi:'? ?"1V _ R'EC'll03' 'lnlellllla loop Connector "HP l? Models C D and E are similar to Model
?_Yl_%}O&;J_ hw/sg, "h;_l3a_h?fr;l fiipuiivfilg the parts llsls or these molleli 04WG-672 with the following exceptions.
l\ll_o?v lrr;il?tIr, losolsfgfnihriluml "ash" General Electric 856 Model C emplws ll plugqll leslllml' Rls
RMC-037 Clip. battery slip h_ d 1 and RIZ. The values remain the same as
RM5'lB? 5P""f~ "A" \'="=fY =P""e- T ls' mo 9 appeals on pug" 1840 in the earlier models Model D ein lo a
_ _ _ through 18-44 of Ridefs Manual Volume _ _ ' . .. P y
The f01l0WlllE miscellaneous Diffi have XVIII R __ Rm __ b __ d the plug-ln resistor and, ln addltlon,| new
Been added. Most of these parts are required f ?zo in otha _ a?ao eel? C ings oscillator coil and 2 section dry eleo
because of the addition of brown and white lqlglq C; "gg hgh ?7 ? ms' A W' trolytio capacitor. In Model E the loop
cabinets. ` ?' ' ` ' ` ' antenna assembly has been redesigned.
. over, a eel/sr u ire _ _ odric _ _ _
hells l5""l"9?3k < l > s r Go 1192 521 92528
lli.Qi'i.i`2i 553552 i?Zl? 'flilr 'lEURf?`????.r> soo.o.o._ These models arollrosarrrr as Models 912-523, M?l?*'1?m?f!{ Wfnd U5WG-2745A
Chg; R/\C~0f'I __ _ __ ____ __ This model ls the same as Model 94\VG-
RAGM9 'hi:';;` ml" ? Y ( '?"'") l " 'l g2_324_ 92_525_ 92_526_ 2745A. To reduce regeneration in later pro-
RAC-n7c Corner, main body (white) rneluder duction receivers, the following changes were
roroorr ooh? os.. <..r...o .Maas B. r. Goodrich sa_1n9. 93-110, sa_111 },T;?"?' PM
RAOu__ _______;\g= _mm _"__ (bmW__) _"duh" 9__'l_l6l?se9r?ll;l2l_;ls are the same as Models 93-104, No. No. .gzimghon
RACM6 &,.,,,, imp cm, tbmwnl B _ cle mms shgdrzgf rsrsrrrrs roosrrror
_l?S;fl;l_I? K??b_=?:?;_? Zgnml knob . F. Goodrich 93 112. S3-l 13 tx-av asm; s,?;uo_olrm, o,s_w osrlsorr rorlssor.
, nr-lR>>oo4 no/rr, tooo room rlvst These models are thc same as Models 93-107 The remwf realms :he rf~>>
nl-rY_ooo Handle, roblaor loodlr and 93405 solorod olrole l.-s rrr doo more
r _ l:1_;E_E0 :Ili __ 9 end of cord to the sprlng. Cut off any
where the cord fastens to the prong in the been chalfsld Ei' h gg hs S 2264 73 excess Sffmllr
moldedplug. An appreciable increaseinduraf ohm Thgeall l?m*_h'2 0 ms l'? '
tion of operation from a fully charged bat- th gs" lib oysb e ileell cllllent ?l The C0lIlP011EURlJf Darts are the Same as
tery ooo be effected in the following rrrso_ weelim. Q' e '? _P S"."?@'%"'??"EUR 'md these lisled on page may of Riderls Val~
ner, realizing, however, that some degree of vMi0usm6;;7,;l"la long ln sam etweell "me XV, except f0l` 51059 listed lJEURl0W.
performance is sacrificed in regard to sen- ` _
sitivity and power output. Replace power- a' FQ hal; been lldgedlm Fatal' 1152! ` ia" D . .
supply filter resistor R17 (L500 Ohms) with e o eh sec , rear, wa er ead that Co. o. escrlplzan
a 4_70aohm_ Lwatty carbon resistmh This goes to t e phonograph receptacle. -15 B67204 0.20 /lf, 200 v, tubular
change should be made only when were 4. Capacitor C30 ls now connected to the C-16 D67104 0.10 Af, 400 v, tubular
is a demand for longer duration of opera- vallable reslsml' Rza' lllslelld ?l tc' O18 D67lo2 0001 *ll-' 400 Y' tubular
tion to one battery chm_ge_ ground. C-19 17Al23 1,0-12 api, trimmer.
? John F. Rider

Page 3:

ELECTRIC
GEN >>/
Luv n "ai w (7) ? ul x -J \||

Page 4:

PAGE 18-20 GE
ELECTRICAL RATING (INPUT)
Frequency on a>>c
Wattage _ _
OPERATING FREQUENCIES
Broadcast Band _
GENERAL ELECTRIC CO.
- 105-125 volts a-c or d-e
_ 25 to 50 cycles
POWER OUTPUT (117 VOLTS LINE)
Maximum
LOUDSPEAKER
Type
o11ts1de Cone D1eme1er
v111ee co1l Impedance 1400 eyeles>
TUBE COMFLEMENT
_ 1.2 Watts
1.5 watts
3 5 ohms
Type 12SG7
Type 12SA7
Type IZSK7
Type l2sQ7
Type 35L5GT
Type 55z5GT/G
P1lot Lamp GE Type C7 115 volt 10 watt clear
candelabra screw base
ELECTRICAL CIRCUIT ALIGNMENT
ALYGNMENT FREQUENCIES
ose1lletor Converter
Detector A110111
Power Output
EQUIPMENT REQUIRED
Test osc111ator wlth audxo tone modulatlon
A C output meter 1 '/ volts full scelc
Insulated screwdnver
PROCEDURE GENERAL
1 Turn d1el scale pomter as fer e1111nterel11el1w1se as pos
s1l11e The 111-111-.fer should eo1ne1de 1v1th the nrst merlnng at
the left of the scale If 1t doesn t remove ehess1s and sl1p
pmnter on shaft 1111111 the pomter 1s unde referenee mark
vvhen ehess1s 1s bolted 1n pleee
2 For 1f end 1 1 ehgnments the o11t1111t meter 1s een
neeted across the loudspeaker vo1ee 111111 termmels
3 Kccp racho volume control at ma111mun1 end attenuate
test oscdletor slgn 11 output so that the output meter reedlng
ne1er exeeeds ll, volts
4 The ehess1s must be removed from the eebrnet d11r1r1g
1 F ehgnment For R F ehgnment bolt the ehess1s 1n the
Connect the ee1>ee1tor as l1sted 111 eolnrnn 2 between
the output H1gh s1de of test esedletor end tht 11o1n1 of
sfcnou seen
Tube and Trlmmer Luzarlon
ALIGNMENT CHART
Test
Co Let Test ose lletor to Osc
12 A7 111111 n sores 11h 005 455
A1-11 Post nserns 1~11h 50 mmf 1100 Ire
Ant Posx 11 ser ts v1/1111 50 mmf 1500 kc
T ens
lst end
STAGE GAIN AND VOLTAGE CHECKS
Stage gem measurements by vacuum tube voltmezer or
s1n11ler mees11r1ng dev1ees mey be used to check e1re111t per
formance end 1solete trouble Tht gem vel11es hsted may have
to1erances of 20 per cent Reedmgs telten w1th low s1gnel
lnput so that AVC 1s not effectlve
11) R P Stage Gems
Antenna post to l2sG7 gnd 4 at 1000 kc
12SK7 end to IZSQ7 d1ode plete 57 et 1155 kc
0 12 volt at 400 tyeles across volume control (1251 v111h
control set at me111m11m 1v1ll g1ve apprommately l
watt Output ECTOSS Speaker VOICC C011
1:1 c voltage developed eeross the osmlletor end leak
(RS) Averages 7 7 volts at 1000 kc
1 Socket Pm volteges
F1g11re 4 shows voltages from ell e11l1e 111ns to B unless
111her1v1se s11ee1ned Voltage reedmgs much lower then
those s11ee1ned 1-nev heln loeel11e defeenve eo1npo1-.ents
KEPLACEMENT PARTS LIST MODELS 200 203 & 205
PART N0 SYMBOL DESCRIPTION
UNIV RSAL REPLACEMENT PARTS
CAPACITOR
CAPACITOR
CAPACITOR
005 mfd 000 v paper
RAE 00
RAB 005
CAPACITOR
CAPACITOR
CAPACITOR
CAPACITOR
01 mid ooo v nener
100 mm( SUD V mlca
ISO mmf 500 v mlca
CEMENT Loudsneelre eone ee1-nent
TI-IINNER Cone eement lhlnner
SPEAKER 5'11n PM
CONE Replacement eorle 1
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
150 ohms ' w carbon
470 ohms l, w eerbol-1
1000 ohms l 111 eerbon
5000 ohms 1 w carbon
22 000 ohms lf w ombon
220 000 ohms '? w cerhon
470 000 ohms bg w eerben
2 2 meg 14 w carbon
so meg / w eerhen
1000 nhms Z w carbon
LIZED REPLACEMENT PARTS
BEAM A SCOPE Cehlnet heck end loop es
BEAM A SCOPE Cemnez 1111011 end loop
CABINET Brown olnshe lModel 2001
CABINET well-111t wood ?M0de| 2031
CABINET Blonde wood Model 2051
CABINET Maple wood lModel 2051
PART N0
SYMBOL DESCRIPTION
SPECIALIZED REPLACEMENT PARTS (Cant d)
0 PULLEY Idler pulley assembly
015 CIA IB
cA1>Ac1To1z 0 1 mid 200 v 111111111
CAPACITOR 50 50111111 150 11 dryelee1111ly11e
CONDENSER Tnmng condenser llneludes
CURB Dnve cord essemhly
DRUM Dnve drum end shefz essemhly
PI ATE Dlel beak pleze assembly
KNOB Control knob
SCALE I>1elseele<1~/Iodels 203 205
SCALE D1els?11le

Page 5:

3' Ri??ffu' ` |25 1 BLUE CN |zsc'r 35|_sav/a
? azz E 3' E "" :KG cams
i_ ____ _ _fi _,__ Y Q- -A-- -.>>--V >>-\ Ave .EUREURf" Osigw mg.. mg
I lm ma R9 ?35 man nu ur :gg
, I ' cam _L Q
` WIRING CODE 'E
_ ' v|Ew FROM Bo1ToM oF cHAss|s _ E
_ g _ , , . 2 . ? - ~ _ 0 _ ? _ U, 5,0 CQNDITICN oF TEST
, _ . . '2*? - _ _ 0 _ _ 3 A '_ PER-vom' METER
|_| ' |_|. ' -2 0 |23 MEAS _D FRONT PIN T0 B-EUS UNLESS
-.5 o 4? '-5 snow or nsn
| 86 117 VULTS LINE
O _ _ VOLUME CONTRCL-CLCCKWISE E:
' ` N0 SIG AL INPUT

Page 6:

PAGE .15-56 G.E.
GENERAL ELECTRIC CO.
Model 200 203 205
Material Plastic Wood Wood
Color Brown Mahogany Maple
Height 7 'Q in. 825 in. 8% m.
Width 12 in. 13 in. 13 in.
Depth 7'-? in. 7:2 in. TH? in.
ELECTRICAL RATING (INPUT)
Voltage ....,...,.., _ ,_.. 105-125 volts a-c or d-C
Frequency on a-c ..,. __`_,,...
Wattage .,,. ...,, _ . _
OPERATING FREQUENCIES
.25 to 60 cycles
Broadcast Band .._._ _ _ _ _ ,540-1600 kilocycles
I-F Amplifier ....,...,..,
VOYIER OUTPUT (Ill VOLTS UNE)
Maximum _.__
LOUDSPEAKER
Type _ __________.________... _ ,..,
Outside Cone Diameter _,_._..,____.. . _
Voice Coil Impedance (400 cycles) ..__
TUBE CQMFl?MENT
I.F. Amplifier ,__.. . _ .
._1.2 watts
_ _ _1.5 watts
_ __3.5 ohms
Type 12SG7
Type 12SA7
Type 12SQ7
Power Output _......__._____. _..____.. T ype 35L5GT
Rectifier ._....__.____....._.._____... Type SSZSGT /G
Pilot Lamp _._.__ G-E, Type C7, 115-voltt 10-watt, clear,
candelabra screw base
ELECTRICAL CIRCUIT ALIGNMENT
Ausrmsur FREQUENCIES
R-F ____._....,__.__ ____ 1 500 kilocycles
I-F .__,_______._. _.__ 4 55 kilocycles
EQUIPMENT REQUIRE
1. Test oscillator with audio tone modulation
2. A.C. output meter, 1% volts full scale
_ 0.05 mf paper capacitor
. 50 mmf mica capacitor
. Insulated screwdriver
l. Turn dial scale pointer as far counterclockwise as pos>>
sible. The pointer should coincide with the lirst marking at
the left of the scale; If it doesn't, remove chassis and slip
pointer on shaft until the pointer is under reference mark
when chassis is bolted in place. '
2. For i-f and r-f alignments, the output meter is con-
nected across the loudspeaker voice coil terminals.
3. Keep radio volume control at maximum and attenuate
test oscillator signal output so. that the output meter reading
never exceeds l 'I volts.
4, The chassis must be removed from the cabinet during
I-F alignment. For R-F alignment bolt the chassis in the
cabinet securely.
5. Connect the capacitor as listed in column 2, between
the output "High Side" of, test oscillator and the point of
input specified.
ALIGNMENT CHART
step cm-meer 'rat o.a||awr to om, smang Maximum
semi.; on mais output
STAGE GAIN AND VOLTAGE CHECKS
Stage gain measurements by vacuum tube voltmeter or
similar measuring devices may be used to check circuit per-
formance and isolate trouble. The gain values listed may have
tolerances of 20 per cent. Readings taken with low signal
input so that AVC is not effective.
(1) R-F Stage Gains.
Antenna post to 12SG7 grid.. _ _ . . 4 at 1000 kc
12SG7 grid to 12SA7 grid _____._ _ _ 8 at 1000 kc
IZSA7 grid to 12SK7 grid _._.._.,______ 30 at 455 kc
EZSK7 grid to 12SQ7 diode plate __,._._ 57 at 455 kc
l l2SK7 grid in leries with 0.05 455 kc
Trimmers
1500 kc \st and
Trimmers
3 Ant. Post in series with 50 mm( 1500 kc l500 kc
z izsav gfm in series with 0,05 455 ke
4 Am. Puma serie: with so mmf isuo kc
(2) Audio Gain.
0.12 volt at 400 cycles across volume control (RS) with
control set at maximum will give approximately I-?'>>
watt output across speaker voice coil.
(3) Oscillator Grid Bias.
D-C voltage developed across the oscillator grid leak
(R3). Averages 7.7 volts at 1000 kc. `
(4) Socket Pin Voltages.
Figure 4 shows voltages from all tube pins to B- unless
otherwise specified. Voltage readings much lower than
those specified may helplocalize defective components
no 1? inn lgnioxe |?iia>>>;\;. lm av il .
Fig. I. ' Tube and Trimmer Location
ng. 2. na.: swinging oagm.
@John F. Rider a

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