B.F. Goodrich 92-529 Schematic

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Product Information:
Model:92-529
Manufacturer:B.F. Goodrich (Mantola)
Description:BJ

Schematics Content:

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Page 1:

c 2mm E. so.. 02 mo SEN
O : EVER E zzbzm _06255: 5540> _Eoz

(C)John F. Rider

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GOODRICH PAGE 21
MODEL 92-529

AllGNMENT PROCEDURE

oulpul mom conncclion _
Oulpul molcs reading so lndicclc soo MW (Sfcndard Oulpul)
Sol Dial ruins" ._ .
Sei band swilch .......

Across speaker voice coil
30A, 400 cycles
. Fully clockwise
|-3/31 Tram can ar o( Ich shall. variable condenser clesed
...... To leIl for AM alignmenl; lo righl for FM alignmenl

AM ALIGNMENT
GENERATOR GENERATOR ADJUST TRIMMERS TRIMMER

VARIABLE FREQUENCY ANTEN NA HIGH sIDE GROUND LEAD FoR MAX. ouTPUT FU NCT'O"
Open 455 K= .os MIoI MI... ond cllsssis I. z, a, 4 I.I=.
ll#0 KC H'Zo KC *Tcsl loop Tcsr loop I I oscillssos
'40? Kc '40? Kc *Tssl loop Tcss loop I2 Anrsnnc
"ooo Kc soo Kc *TssI loop Tcsr loop clincls-poinl Anlcnn.

l*Connecl generalor lead lo a Slandard Haxelline Tesl Loop, Modal lISO, placed lwe leel from' lhe sel loop. or Ihree Iurns of wire abcul six
inches in diameler, placed aboul one lool from Ihe sal loop.

"wm- c gcncroror signsl of ooo Kc, Iunc Illp sci so llsc polnl whom maximum oulpul Is oblslncd. which shoulol bc sppsonlmossly boo Kc on
the dial. Adiusl anlenna seclion plales ol variable lor maximum oulpul.

The alignmenI procedure should be repealed in llle original order Ior grealesl accuracy.

Always keep lhe oufpul from lhe signal generelor el ils lowesl possible value lo make lhe A. V. C. aclian of lhe receiver ineflaclive.

FM ALIGNMENT
DETECTOR AND IF ALIGNMENT USING SIGNAL GENERATOR AND OSCILLOSCOPE

| Connacl varlical inpul of scope across volume conlral of receiver (Grounded lerminal lo chassis. ungrounded Terminal lu high Side of lha conlroll.
2 Connecl FM Ganeralor. High Side. 'lo grid el 1nd lF lube lhreugh .0| mid. dummy, Low Side. la chassis.

4. Sel generaior frequency lo |0.7 Mc modulaIad ellher 60 cycles or 400 cycles, 250 Kc sweep (|25 Kc' devialioI-I).

5. Sel volume conirol lo maximum, variable condenser fully open, band swilch lo righl (FM).

e Adiusf deloclor primary slug #5 for maximum vorllcal swoop of she scope pcllcrn.

7 Adiusl deieclor secondary slug #b for symmairy el lhe pallern. Palfern should look like Fig. 4. wilh lhe same amounf ol curve on boils ends.
8. Connecl generalor, high side. Io mixer coil as in Fig. 2, law side io chassis.

9. Shorl A. V. C. la chassis al iunclion of RI5 and Rl9.
~l0. Bisconrlccl il'Ia negalive lead of C22 from pin #Z of bTB.

II. Connect vedicel inpul of scope across RH. (Grounded lerminel le chassis, ungroundad lermirlablo high side of resisl'or.)

I2. Adiusl lI= slugs 7, s. 9, Io for gscslcss venich swoop of rho psllcm, slcggcr Inns (doruns) slighlly so lnss psnom looks lilo Fig. 7.
I3. Resalder lha negalivs lead of condenser dlsconncclad eller alignmenl is complehd.

NOTE: A aoubl. Imco psllsm. ss in Elo. s or Flo. o los aclcclos sllgnmom. or Fig. a for IF slagnmonl. msy Is. csussol by s anln ous of plsssc
conainon Ecswccn rlso swscp vclrsgo Io slsc llonsonlsl Icsmlnsls ol slsc scops and sl.. modulsiion on rhc gsnsssror signcl. To corsch Ilsis con-
amon. com-cs s condoms. or .scour .ooos mf. scsoss +I.. nosisonvsl Inpul Iccminsls of rho scope .no s I mcgohm vsslsbls mslsrsncs in sssics
wilh The lead lo The ungrounded Terminal. Adiusl lhe rasislance unlil Ihe Iwo Traces coincide.

DETECTOR ALIGNMENT USING SIGNAL GENERATOR AND VTVM

Pos'lloN GENERATOR DUMMY GENERAToR GENE'WOR ADJUST TRIMMERS TRIMMER
0F FREQUENCY ANTENNA coNNEcT'oN ??NNE?T'?N IN oRDeR sHowN FUNCTION
vARIAsLE HIGH sIDE GROUND LEAD
Opan |01 Mc .0| Ml'd. 1d lF grid Chassis #'5, #'b Daloeior

#'5 Is .diuslca for maximum A. v, c. vollsgc. A vscuum sues vcllmsoos os s 20,000 ohm pcs vols volsmosos will. s low v. songs can Iss uscd Io
msssuss +R. A. v. c. volrsg.. connscs ncgonvc Inca Io iunsnon of Rls snsl RI9 on lssnd swnch .ml posmvo Ina so Ill. slr-sus.

#'b is adiusfed lor xero reading of e vacuum lube volImaler or a 20,000 ohm par voll Ynlimeler. connecled ns shown in Fig. 3. Rock lhis adiusl-
mcnf sluougll rho som palm lo sco lllal rho volfsgc Is pasisivc on on. sid. of rho mc poinr and ncgalivc on #he nllssr.

NOTE: lf a IO] Mc FM generalor is no' available for allgnmelll ol delecIor, all unmodulaIed Signal of l0.7 Mc from an accurallly calibralfd
comsnnonsl AM vyps osnsmlor can Iso uscsl. (vclsmcrcs sllgnmcnl only).

LF. alignmanl using sianal generalor and V.T.V.M. noi recommended.

POSlTlON GENERATOR GENERATOR
GENERATOR DUMMY ADJUST TRIMMERS TRIMMER
OF CONNECTlON CONNECTION
vARIABLE FREQUENCY ANTENNA HIGH SIDE GROUND LEAD lN ORDER SHOWN FUNCTlON
opsn lov Mc zoo Ohm Anr. Tsrm. Anl. Tom.. # I3 osclllnor
Closed 87.5 Mc 300 Ohm Ani. Term. Anl.Tarn1. Spacing of L-E Oscillalcr
Repeal The above oscillalor adiuslmenls until proper coverage is oblain ed on bolh ends al bend since Iho lwo adiuxlmenls alieel each alher.
|06 Mc |06 Mc 300 Ohm Anl. Term. Arll. Term. # I4 RF
90 Mc 90 Mc 300 Ohm Arll. Term. Anl. T Spacing of L-3 RF

Rap-ss "RF and Anl." caiusrmcnis unlil prop" freaking Is obs-Inca cs Isosl- so .na los Mc. smc. lacing sho ssl cl on. ffoquoncy all-ch Ili.
smoking .s ns. on... lmqusncy.

All RF lrimmels ara adiusled for maximum oulplll` measured wifh oulpul meler across speaker voice coil.

For RF alignmel'lil use FM generalor signal modulaled will'l 400 cycles 45 Kc sweep (12.5 Kc devialion).

?John F. Rider

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PAGE 21-4 GOODRICH

MODEL 92-529 ,
HIGH SIDE OF VOL. CONTROL
R THE |00,000 OHM
cHAssl ESISTORS USED SHOULD
0F EACH 0THER` BUT
THE ACTUAL VALUE MAY
OSCILLOSCOPE PATTERNS
BAND SWITCH Pls. 1
Locuiion Number Dennphu ~r, g; -~
cl1 com-ll capeeiler, sis MMi= rum,
021,30,sl 32 Cv I, lcopaellor, variable (AM-FM)
100103, 04 ' lcapaeivors, 1riromer R P -M w. RECEIVER
0, 21 0P-zos~l capaeiior, .02 _ 400 v. Paper asuznnon oumr il w srlirerr
, l7 . Rcelnrlel Resiswr, |00,000 ohms I/zw 207. m 5,5" m WLM
R3,1, lo Rosso-2 Reeisior, as olrms l/,w +l0?/,I you." cosmos
Rs llc-222.2 illzesisror, 2200 ohms I/2/w vlou, ren-lun
Rl2 Rosie-2 Resisror, 39,000 ohms I/Zw lov, msg; SWWL
Rlz Rc.lols.l Resisror, lo Meo ohms I/,w 20?.
Rls v0el1 Cerrrrol, orl-off ar volrlrrse l meg
lrrelrreles sl, s2, s3-0.1. swims
m5." ROHM gesisgcn 2121062450 ohhmsxl/zw 100% BLOCK DIAGRAM FOR I.F. AND DETECTOR ALIGNMENT
??? Roni.. ?25.22 ,or M.; SMH/,w 20s,, usme slGNAL GENERATOR Ann osclLLoscors.
022 Rw.41les Resisrer, 410 ohms 2w w.wA slum, FIG 9
L0 LP.22.0 Loop Arilerrria '
els-|200 cabinet
RMI-0 llama
Ms.l29-0 lsrass Mole
KNJB Knob Ammbw DIAL STRING ARRANGEMENT
Rmb Knob, Large HG
101.21 Knob, small ~ '0
PY-a Drive slrair Pulley
5M.; Drive shail
ssel Dial spring
0R.2 Dial cord
11 sim-|00 Speaker 4" PM, xr 0.1,
Ts TR.2| Transiormer, Power
L1 L00; coil oseillaior AM
Ll Lols choke, Grid
L4 Lois choke, carmsrle
10.2 1A.; ceramic Trimmer s-2o MMF
(31223233 I 002| capacilor, 2 r 4002 MFD ceramic
0.33 cMs~ol0 e capaoilar, 10 MMF silver Mira l0=.I
m2 00150330; capaeiror, 33 MMF silver Miea 5?,
020 00-060 1 capaeilor, sa MMF ceramic +207.,
clv 0M-lsl-l capaeiror, lso MMF Mira 207,,
022 0240 Capeellor, 0 Mr-D 50_w.vA Eleelrolylic TUBE LOCATIONS S'm'lou
C25 00103.20 capaciior, .02 MFD laonvA 0,44," FIG n SELECT"

(C)John F. Rider

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