Technics ST-9030 User manual

ORDEN NO.
ffiffiffi
@FM Stereo Tuner
sT-s03t
(x), (xc), (xcH), (XGF),
(xsD), (xsw), (xE)
t
J
I
@
The model ST-9030 [X j ¡s avaitabte ¡n As;a,
' Latin America, Middie Ëasi ând Africa only.
The modet ST-9030 [XG] is avaiiabte in European ontv-
The modei ST-9030 [XGH] is avaitabte in Hoiland onti.
Ji'e mod.,gl !I-903O tXGFI is avaitabte in rr"n"" oitf.''
The modêl ST.903O IXSD] is availabte in Scandinavia onl.
Ji'eJodel 9I'9990 [xs"^J] is available in switzertano onìí.
¡he mode! ST.9030 [XE ] is avaítabia in Ëngtand onty. - .
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TECHN ICAL SPECI FICATIÛNS (I HF)
FM TUNER SECTION
Frequency range
Antenna terminals
SÞnsit¡viry
50 dB quieting sensitivity MONO
STEREO
ns are subiect to changg without notice for further improvemenl.
Caprure ,oi¡o . : (Wi<JelNairorv) 0.g dBi 2.0 dB
. lmage rejecioh (âr gBMHz) i3S dB
lF reiecrion (atB8MHz) 135d8
' Spurious respoáse rel.ection (at ggMHz) 135 dg
AM zuppression (WideÌ Sg dB
Stereo separatíon (ÞJidel 50cjô ai lkHz,4CrdB at 10kH¿
(Narros') 40 d3 ar 1 k Hr; 30 JB ar I Ok Hz
Leak car¡ier OyIp_UT - _-O-Säe f l gtH.l
' REc our _zo cs tig:k-Hz, serHz¡
GENERAL
Ourput voltage Fixed {REC OUT} O.1V
Variabte (ouTpUT¡ O_i.sv
Power supply (50/60H:) 1i\ti2Ol22A/240V
Power consumþtion 27\t\t
Dimensions(WxHxD)
450 x 92 x 37omm 117%, x 3%., x 14%,,1
weieht z.q ts (to.s-r'å.i
88: t08MHz
. 75Q (uþbaianced)
I t2.gdBr
l75QI 1.2y1 {lHF ,58}
18.1 dBf
(rHF',58)
38.1 dBf
0HF',58)
(750)
{750)
S/N
Freqlency response
Total harmoníc disrortion MONO (Wide/Narrow)
O.08o/o/0.
STEBEO (Wide/Narrow (1 kHz)
( 1 kHz)
80 dB
MONO O.OBc/o/O
OUTPUT 20Hz - 1Bk +0.'l dB
REC OUT 20Hz'1SkHz dB
A¡ternete channel selectiv¡ty iwide/Narrow)
25dB/90d8 Hz'f
Ir
I
.Ék
iË.ë#
ionen könnsn infolge von Verbesserungen ohne Ankündigung geândert werden.
AM-Unterdrûckung 5g dB
Kanaltrennung {Wide} 50dB bei 1kHz,40dB bei t0 kHz
(Narrôw) 40 dB bej 1kHz, 30iB bei 10kH¿
Hitfsträgerdämpf ung (pítorton) oúrpui -' _O=õã-t I gtn.l
Besrenzuns.Einsatzpunkr REcour -'f&,itijjlïl
Bandbreite ZF-Verstårker (Wide/Narrowl SOOiÃiñoor.,-,,
Ratíoderektor (Wide/Narrowl ?.5MHz/l.5MHz
^anartrennung o dB
ALLGEMEINE DATEN
88- isch )
Spiegelfrequenzu
ZF.Festískeit beí
o,ogo/o/0.30/"
dB
30 dB, 75r}
26 dB; 75O
20 dB|, ,7sQ
0.1eyJo.tsy. '
98 MHz
dB
75 BdFest
Ausgangsspannung {B cOUT)
IOUTPUTI
I'i,f
TECHNTSCHE DATEN (DtN 45 500)
UKW.TUNER'¡'EIL
Freq uenzgang
Eingangsimpedanz
Eingangsempf índl ich keit

I
E LOC.åTION OF CONT
STEREC I
IF WIDE IN
MPX r ser-rcron {
¡ auto
^off -
Front Panel
NARRCW JF CIRCUIT
WIDE IF CIRCU
LOW PASS FILT
POWER TRANSFORM
MUTING
FM MPX
PLL DEMODULATOR
ê'r
K=
ING METER ANTENNA
(75c¿ CoAXtAL)
REC OUT
LEVEL CONiROL
MPX OUTPUT
VOLTAGE ELECTOR
METER
NING
{IFM MULTIPATH
JOUTPUT
l.
TUNING
, :':.-..i!.:
Rear Panel View
E LINER
R BLOCK
F AMP & MIXER
RIABLE CAPACITOR
HIGH BLEND AUTO
SWITCH¡NG CIRCUIT
ERVO TUNING CIRCUiT
ã"
Erl
aì..
IF WIDE/NARROW
AUTO SWITCHING CIRCUIT
,i'
I
,i,
.tT
I
'
CARACTER ISTICS TECH¡OU
PARTIE TUNER FM
Gamme regue
Bornes d'antenne
Sensibil ité
Sensibilité pour E0 dB MONO
Distorsion harmonlquo tô¡ale MONO
.Rapport S/B :
.Courbe dà rêponse OUTpUT
:..'. , ,., ,]:., REi oUT
Sélectivité en canaux alternés
STE
MONO
STE
Rapport de.capture .(wide/narow) O,gdgi 2,Odg
Réjecrion de fréquence image å 9g[4ijz ' - "' v/vv(
ßéiection Èi â õäù;;- '¡¡rqes o Jo¡v¡n¿ 135 dB
Féjection ¿é i¿""Ëiiå, non sétecrive à e8i\4Hz ;33 à3
Suppression AM ' (widel
Séparationdusc"naui"ii¡d"J, ikHz50dB, t0kH.;353
Lu.*nu) lkHz acdB, iólij. sooe
Résidus de porteuse OUiF
BEc;Trr _roorf,R."?,(¿gil:j
e ÉruEnal¡rÉs
25dBl90d8 (4OokHz)
- 15kHz, +('t ?
;,: dB
-v,o
(7so) 38.1 d8f
24¿v (tHF'58)
- re rnz,l!,! oe
( I H F) sujer à changement sans préaris.
Tension de sortie Fixed (REC OUT)
. Variable (OUTPUT)
Alimentation (50/60H2)
Conrcmmation
Dimensions{LxHxp)
Poids
o.7V
0 - t.5V
1 10/ 12O/22O/24Ov
27W
450x92x370mm
7.4 kg
88 - l08MHz
75O (asymétrique)
12.8 d3f
754) 12pV (tHF .58)
18.1 dBf
75il 2.2pv {lHF ,Sg)
o,ogþ/o/o,15% (1kHz\
{wide/narrow)
O,O8./"/O.3% (1kqzt
80 dB
lã sr.soeo

E TEC¡-INICAL DESCR¡PT¡ON
ô rF WIDE-NARROW ortororia ãro*ar.QVER CrRCUrr [Fig. 1j ": '
O Functions of TR410, TR414 and TR415 of muting circuit
(During tuning)
ÏR410 is turned "oFF" during tuning, with positive poîentiar appearing ai the coilectoi. (Refer to the ¡tem 4 of
ihe mut¡ng circuit operating principle description). vvr¡vv\v¡ \¡ ¡vre¡
Since the collector of rR41o is connected to the base oÍ TB414,tile sâme positive potentiel is also applied tc the
base oí TR414' Meanwhíre, positive vortage ror¡¡er than the power source volîage by approximately 0.ôV is ap-
plied through the siiicon.diode D407 to the emitler oíTR414,anc therefore, tr'¡r tr.^i.i* "ir*, ,uo. is turned
"oFF"' with negative potential appearing at the collecror. Thus TR4ls is rurned ,,oN,,by th¡s negati,/e po-
tentiar, and the coilector of rR4 1 5 is rendered to be of ground ootenliar.
(During detuning)
TF410 is turned "oN" during detuning. with the collector rendered to be of ground potentiaí. Thereafter,
TR414 isturned "oN",w'hileTR4lsisturned"oFF"inthereverseorderrothatduringthetuning. According-
ly, negative potential is developed at the collector of TR4 j 5.
Af DETECTIoN cIRCUIT
i30l rOts
@
(oN)
JK
3
ã
ù
¡
¡
t
,H
_,1
@
(oN)
TRl TR1I5 r----------
Muting c¡rcuit I
__ _J "'I
t0
lññiilînsl
(ouiñciñnÌ"e) lu¡r I
(oN)
T_
ITR3C9 __J
WIDE li¡,¡-¡æl
indicaior
@8 To discriminating
amplifier
tuh CIRCUIT
(I F BAND SWiTCHING.OVER)
Fig. 1
@ t¡¡toe.ruanBoW swirching círcuit
(During detuning)
Negative potentbl is'cleveloped.at iþe
TR437 to turn "ON,j TR304, rhe coil
turning "OFF" of TR305, negative po
collector of T8415. since this porent¡ar is impresed to T8304 throu
ector is reCuced to ground poteniiel, thus turning TR305 ,,OFF,, Upon
tential appears at ihe collector, w¡th vo¡tage lower than "pitch-off" being
applied ro the gare of TR30g to ,,OpE N" the circuit bet'¿/egn drain and source. Meanwhiie, turnihg "OFF" oí
TR305 turns "ON" T8306 to render the colfecior of TB306 ro be of ground porenrial, with d
T8307 brought inro,,SHORT,, srare.
L_______ MUTING SWI
I
I
_J \:7 ú
trequency
output
!VIDE
Fdeteciion
NARROW (narrow
range) tF detect¡on
300kHz
coil
af
ånpl¡íier ¿f
smpl¡fier
200kH¿
coil @
(oFF)
F SELECl)
S1V)
TR4I7
AF
Iherefore, during cletuning, NAR ROW lF
raín and source of

A. ln the absence of interferenca
Since the coilecror of ]!+f S is lf ground potenriat. TR304 îs in ,,OFF,,
ii;ffi ;",i::"ij":ffi j:;:t:ï*:;,'å"J"J"ï:#;iËîïl!Îirtiå[',*.#]i:T*,fä
"ON", whiie TR3os is broushr tni; ,,;;l,s;are due ro the sround oor
wrDE rF sisnar beins rransmitred . *or.or.niîircuit. on ìn-e;-.ü,;îî:l:::ï;:å,;i:¿l*: :m:t Í.i
i:iï:;-î),. ii,fiii;.iîîi;;ï:îlXïåj*;;;;.;;;;;.i,å'å1,,n. circuit between ãia¡n ano source,
B lnterference component (Af)
lnrerference with s¡ations at.cjistances 20e ktz.il 30g kHz apart is brought in questiôn in the san
::ï,r:fiil:1åi,':å,f;:,:TJ..î:;iï,jn,.f oa"o wi¿tf'¡I,',;.ï""i:
=1,v the ,ec"ption ìJ,ariect.o oy
a ln the presence of ¡nterference 'ìce component {af) from wlDE lF c¡rcu¡i. - -e'¡ 'J <
Although TR3O4 is kept. in,,,OFF,, state by TR4i5 in thê absence of interfr
A (ln the absence or inrerrerenc.l. ¡iì¿rl' .oi;:::Ji:,:t:i::_::,::.rrerence as expraíned in rhe above item
:li:iii¿ff ';:1l:'1e'1-!'"1'*1#';,',*i'ii:"JiJtiii:i'åï',ì.:';î:::î^î;i::,i*:m;
bring TR3o7 i; ..:il:l this T8304 "9¡"' bv v¡n¡crr, slm¡tai oo"r..,o'":io ,nat in detunins is carried our ro
subseguènt.¡l.r¡r. -"-"'stô.te'. Therefore, cjuring tuning,.,.ràä*.,'*loÄ^o*,rsignal istransmitted to the
@ il::^il-n:ator and separation at ,.NARRoW,, time ..
+;::T;:ï:,ilHi'ï'::"I"eïïlåf::ïï'Åi*=Uf-,"J#îf':åi,:::LiJï: iïä?lt?"i1. iïîl:,
.üi¡*iruï';];:,' i:ïîl¡f ;:::n Ì:ltnilirui*;;:,o,s co ec,or i, noi-ii i'' na,ed on
the ro'¡i rrequency cjrêuit is..ruo,,JJ ìãi"no.,."rnu oorr;;;,.;;ño,f;ilr"tl,ïJ,i;:Xlñ*r*ïr""î:::l
intÞrfei'ence"durins tunins' the collector oiiïäôo ,, reouceo to ""á'i,ï"i"1r"tial and rR309 is turneà ,,otrl,,,
y_.Ë:,i:3:J;:'::il{;;,n 'ri vì."*n,,.,ir.,0 *;;;;;,;;'î,;å;.",.srate, with the besr separation ar
C MUTING CIRCUIT
i he mut;ng circuir of this unit utilízes 3 circuits as
shown in the block díaora¡t ".""r<co o (.irrc
o';o ''ii'i'.';;;,"':;?l:"' ot f'!' 2' i'e'' The mutins
tionourpur.;.ð;i,';;;',":*Tåi,ï;ï,,9.1 jrY..ffi:
curpur voträge varyinq accorcling ," ;;;ü;;uel, ano
the switch circuit makin
L C rhis ;Ji ; ;;;iä ;:,j,,, _,i,:ïff.,:1,1ï:l
functioning rever anc muting band width which have
convenrionaly been difficurt i" À;;.;;;;;uinuîr,,nn
circuit utilizing the L.C. tuning çi¡çr_ri¡, and is also suf-
ficientty resisranr to overmodutar"o "ori"ii" oril.,o,.
of this circuit is described below.
Jl-lL
-Lr
tz
{MUTING SU/ITCH CI RCUITJ
Fis.2
O Muting band switch circuit [Fig. 3J
A. .Perfectly tuned point and ietuned state
jliÏ;î': TR4oo and rR407 aä'i*""i:'ott" since rhe inpur voirase is or 0V. wirh respective emitrers being
]ff,ï:'::lî:åi'jlîåjåJi..,*'J::iåï;i:,iffii:;:;tiJåiî: and rB40e,o,urn ,hem ,,oN,, Accordi
' :il j1!i :'ir-."1..:,,i..".....,
swrcH
BAND
SWIICH
5/¡l LEVE!
swlTcH
¡.1¡Nb S¡GNAL
@NTROL
L.C MUÎ.
BANO
E sr-soso

B. ln the case of detuning to frequencies higher than the perfectly tune{ point
ln this cese, if the circuit is set to input the positive voltage, the potential acts to charge C405, and when the
Vge of TR406 exceeds 0.6V, TR406 is turned "ON". Sìnce TR407 is biased in the reverse direction, it remains
in rhÊ '''OFF" stare. rvith the ground potential being applied to the base of TR409. Upon turninE "ON" of
TR406, the base potential of T8408 is also raised for further maintaining "ON" state. Accordingly, the emitter
potential of TR408 is raisecj, with the Vse of TR409 reduced belcw 0.6V, thus TR409 being turned "OFF", and
positivevoltageappearsatthecollectorofTB40g. lnotherwords,theinputvoltagetocauseC40Stobecharged
up to the voltage for turning TR406 "ON" determines +Af of Fig. 4. Upon exceeciing +Àí, positive voltage ap-
pears as the output.
C. ln the case of detuning to frequencies lower than the perfectly tuned po¡nt
ln this case,negative potential is input and tiiis voltage gradually chargesC405. When the VBË of TR407 reaches
-0.6 V, TR407 is turned "ON", with negative potentiai appearing at the emiliér, and TR409 is brought into
"OFF" state, with positive potential being developed at its collecior. Meanwhile, TR406 biesed in the reverse
direction is kept in "OFF" state, and 0V is applied to the base of TF408'to maintain "ON" state. ln other
words, the input voltage to cause C405 to be charged up fo the voltage íor turning TF407 "ON" determines -Âf
cf Fig. 4. Upon exceeding -Af, positive voltage appears as input.
When summarized, the above description is that the outpút a't the tuned tin,e-(Il and éetarned time (III) of Fig. 4
is of 0V, and only in the non-tuned time (lI) , positive vo.ltage is developed at the ouiput, The tuned range Ì'^f oí
-(I) is deterrnined by the capaciry of C405.
TRIO6 J1JL
I
I
I
i
I
!:
I
o
I
c¡t
I
o
0
I
I
P?rtecily
tuñeC oo¡nt
IRI{}T
o{¡NPUT VOLTAGE AND
OUTPUl VOLTAGE)
Fig. 4
@ Sllv level switch circuit
Since the muting band switch circuit functir¡ns in the similar manner in the detuned staie as in the tunecl state,
noises are generated in the signal systern. As counte!'-measures against subh inconveniences, the mutilìg circu¡Î
functioning at band ranges wider than Aí is required. The circuit Íor such a purpose in sho.¡¡n in Fig. 5. The I'F
amplifierl3te¡:minal voltageof lC2A3variesinproport¡ontotheFMinputsignal level. Thisvoltageisapplie'Jto
T8413 through R431. ln the absenæ of signals. the 13 term¡nal is of 0V,\,vith the base of TR4i3 also being of
0V,buttheVBE of theemitterof TB41 3{-0.6V) bythepresenceof D4O6,andthr.¡sTR4 13isin"ON"state.
Meanshile, the VBÉ of TR4i2 is also set to be 0.6V, witn TÞ,412 kept in "ON" state,v'/hile f841 1 is in "OFF"
state, thus positive.potential being developecj es the output.
As the FM input signal increases, the poteniial to be
applied tq TR413 is also raised, with increased collec-
tor current, in whìch case, the collector polent¡al of
Tn413 is ciecreased to turn "OFF" TR412. l.low- e---
ever, VB40 l is connected to the base of TÌ412,and o--| |
OB
it is so arranEed thatJR412 is turned "OFF" only by
the input voltâge of TR413 when S/N of FM input
signál exceecls 50 dB. When (muting level adjusting
volurne) TP412 is turned "OFF", positive potential is
applied to TR41 1 to turn it "ON", with the output
being rendered io be of ground potential.
ln short,' this icircuit ís one v¡hich functions only
when the S/N of the FM input signal is over 50 dB, ' ..: '.
{f!IUTING BAND SWITCH CIRCUIT}
Fis.3
Oulpuì "l¡prl
rc20¡
TRII¡ TRI I3 iz_
o -s/N
lñplt leY?l
and its ourput as shown in Fig. 5.
(S/N MUTING LEVEL SYVITCH CIRCUIT)

'Ì"'
@ L.C.tuning rnutlng band s'witch circuit
,Although the muting circuit is composed of the mu-
ting band switch circuit and SIN level switch c¡rcuit,
it is so arranged as to apply the narrow band signal
from the narrow lF circuit 10 TR418 of Fig. 6 for
providìng a more perfect muting circuit, taking
malfunction arising from neigboring stations into
consideration, When ihis signal level exceeds 0.6V,
TR418 is turned "ON", w¡th the base of TR410
reduced to ground poiential, and thus TR410 is
turned "OFF".
ren the
remains
3N" of
emitter
F" , and
:harged
tage ap-
reaches
tht ¡nto
reverse
n olher
¡es -Af
Í Fie.4
*.Af of
l state,
circuiT
fhe lF
liecj to
rg of
;tAte.
tFF"
EB
JLTL
ì
T
ii
ú
4
.iì
,!
¡
I
¡¿
Ìt
1
ì:
I
?
i
l'ññ"Li-l
L!'rsitt i
J,
1-r
@ füuting NAND circuit ' . . '
TR410 in Fig. 6 performs NAND switching function. The 3 kinds of
lignals as explained in the earlier mentionecl items 1, 2 ano 3 are appli-
ed to the base of TR41O. The respective signal levels are all rendered to
'bà 0V; and TR41O is turnèd "OFF" only when these ar:e simultaneous-
ly applied to TH410 (hatched portion in Fig. 7). Accoidinglv, positive
potential is deVeloped at the collector, which voltage iS transmitted to
ihe relay cjrive circÛit (at the same time, transmittedito the lF band
swítching circuit from the muting switch circu¡t) to opefate.the relay to
provide the set output. Should even one of the 3 kilds of the inptrt
signals to TR410 is of posítive potentíal, TR4'10 is turhed "OÌ'J",with
the collector reduced to ground potent¡al, and thus the r:elay ¡s not
ôperated. (
ffi ÐIAL CORD IT{STALLÅTION GU¡DË
JLIL
.To íeby diive
c¡rcúit
(f\4UTING NAND CI RCUIT)
l-lg. þ
MUTING FUNCTIONING RANGE
¡F5 lnput
o
.:,:,]
{SIGNAL APPLIED TO NANÐ CIRCUIT)
Fis.7
S/N 5/N
I
I
I
i
I
@
0v
IF.V
o
OV
l-1"-*ii.-"--:j
lrc203tr r¿rab,ll
*1=1,/
.o -sl¡r.
o For threading a fresh cord, proceed as follws.
1. Prepare a fresh cord rnore than 18}cÍtçO:7å'\in
length.
2. Bring the variable capacitor into a state where the drum
is completely turned to the right (maximum capacity and
lowest freguency for the variable capacitor).
3. Direct the cord in the order from 1 to 7.
4. Stretch the cord in such a.tension as the spring length is
elongated by 1.5 times that of the original stale.
5. Fix the knot of thecord with the bond.
E sr-gogo
' i ri J:.i' : ...
2
5
\
lnput level
tr)
T-e030 Epcinter
Tuning -1

Ë BLOCK СAGRÅM
WIDE IFAùIP
(s2-4)
Mut¡n9 Sw¡tch
¡c103
l-i^",""' L.cl
l-!"ir':t_i
"^.
tJt-rl
lrRcurT)
ON¡NG RANGE
N,r'tl
1r
I
éi7
.:j
",-]'
tr-.]'
I
I
I
I
tr
I.
[.
TR3O9 I¡/IDÊ IND.
-a
TR31O
s/N
(s2-i)
Serro Tuning
Swilch 1 otr
TO NAND CtBCUtT)
is.7 AC LINÉ
1st-3.d
lF Añp F¡st Filte. 4th.
IF 9th
IFAño
osc Bulíer IF
tsuffêr 1st
¡FAn &d-5rh
lFAmp IFAñp
C€ram¡c Filter
lR2tl Cerañic Filter
NABROW
Sw¡tch Sw¡tch
S{¡tch WIDE
Sw¡tch
Muiing
Switch lFAmp
lF Se¡ect
Swiich
Mutlng
Switch f
An! P
Pilot
B.P.F. MPX
NAND
Mut¡ngPositive
Detecior 19Hz
Amp Schñitt
TR407
Negative
Detectôr
AFC Seavo
Sw¡lch
Auto
Time. AF
ãuller
A
w-
TR4CO-405
Auto
Hi-3l.nd Switch Amp
Mutiñg
Switch Buffer
Voltage
Srabi¡¡ze¡
9elay
D.ivo Re,ay
TR8O3
Tâ807
ER
RãC OUT
OUTPUf
MULTTPAîH ourlL
4CH MPX
VENI
HOATZ
K SCHEM^ATIC DIAGRAM OF
SOI.JRCE FCIR ENGLAND
2
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4567oa
TR3,4
3SK4O
Silcñc.d Mlr./
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SVIuPCS77
W¡dr lF Âñp, Irt ' 3rd
Pict. Lln.r Fttr.r ¡c to2
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Vld. ,F 4cÈ Âã9.
c2ga øcaog
PO.O22 0.022 c207
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oR¡O6 C¡tO
rx Po.cor
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rF êrlf.. AhD. cF2At CF¿42
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0.ta c I o.
cF2O3 cF2O1
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suPi 1t30
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t.2( SVluPCS55
k.roir tÈAmF. t¡! Tfì
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toox
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Notes:
1. 51: I F selecior srvilch in "¿uto" posit;on.
e auto -O wide
2. S2-1 -52-4 Servo luning/muting sh,iich ¡n "¿ulo/muÎing on" posìtion.
@ auto/muting on -@off
3. 53: MFX h¡-blend slviich in "aulo" position.
e auto - @ofl
4. S901: Power source sr^r'itch ¡n "off" position.
5. 5902: . Voltage seleclor sw¡Ìch in "24Ov" posiÌion.
@ 24Ov - ø220v - €) 120v- €)1 10v
6. lôCicated voltage values are the standerd values for the unil measured
by the DC e¡ectron¡c circuit tester (high impedancei 'ruith the chassìs
taken as standard. Thereíore, thêre mây exist some errors in lhe volt¿-
ge values, depending on the internal impedance of ¡he DC circu¡t lesier-
¡ are indicated voltage when FM stereo signal reception.
) are indicated voltðge when IF narrov¡ pos¡tion.
r äre indicâted voltage when muting circuii operation pcsition.
] are indicateo voltage when hi-blend circuit operation posilion
are indicated voltãge v/hen FM monaural signal reception or
no-signal condition.
7. -This schernatic diagram may be modif ied 3t eny rirne'srith the developmeni
of new technology.
f . i'æ:¡a*r*.s*ll.'È,Þ ¡ndicates are signal line.
E'FLOçK DIAGfiAF'{ GF IF{TËGRÅTËÐ e¡RtU¡TS (standarcl circu
43ñ
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SìGNAL ¡NPIT
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OUÍPU'T SÍ:ÂEO
lN0¡cÀi0Ê GROUNO PCW:N
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4
ALIGNMENT ¡NSTRUCTIONS
;
i8
:1
0
:i ';,
' ,l. : j'
i 1..:.:"_ : .'':
.. .Preparation of ¡nsttuments and appliances to be used
I.; AC/DC VTVM
2. . Oscilloscope
3. FM signal generaior
4. Frequency counter
5. Dìstortion meter
é. rù zSO dummy antenna (Refer to fig. 1 on page 18)
i. Ortpri oi signaigenerator should be no higher than
necessôry lo obta¡n an oulput reading'
. Condition of the set
1. Mpx hi-blend sw¡1ôh...
2. Seivo tuning Switch . . .
3. lF select switch
4. Outputlevelcontrol, . .
5. When TP302 and TP303 are short-circuiled, the NARROW lF
irrespectíve of the I F swi ich.
circuit is always esiôblislìed
REMARKS
Adjust for OmV of VTVM indication
Point of non'
inter-ference Connecl DC VTVM bewveen
TP20l and chassis. T102 [WIDE IFTI
tAl
Poini of non-
inter-ference Connect DC VTVM between
TP101 and chassis.
FM SIGNAL GÊNERATOR
CONNECTION EOU
No-signal
Nó-signal
IF AND RF ALIGNMENT (NARROW IFT)
ADJUSTIV1ENT
POINTS
UIAL
SETTING INDICATO R CO¡iN ECTION
(VTVM, SCOPE and
DISTORT.ION METER)
T201
tAl
L8 1OSC Coil)
L7 (Buffe¡ Coill
L6 (2nd DET-2)
L5 {2nd DET-I}
L4 {1st DET-2)
L3 {1st DET-1)
L2 (ANT-2 Coil)
L1 (At.lT-] Coil)
T1 (MlX Coil)
Connect scope 10 output
lerminai.
90MHz
(10f/o lv4cd.
with 4OOHZ) 90MHz
Connect signal genera-
tor 10 coaxial antenna
terminal through FM
dúmmy antenna. . Short bet\ryeen TF302 and TP303
. Adjust for max¡mum outPUl.
. Repeat steps ( 1 ), {3) and (4).
CT8 (OSC Trimmþr)
CT7 (BuÍfer Trirnþer)
CT6 (2nd DET-2)j
CTS (2nd DET-lll
cT4 (1s! oET.2) i
cT3 (1st DET-1) |
CT2 (ANT-2 Trirtrmer)
CT1 (liNT-1. Triøimer)
106MHz Connect scoPe to output
teiminal.
1 06MHz
{1OCPlo Mod.
with 400H2)
Connect signal genera-
tor tc coaxial antenna
terminal thorugh FM
dummy aòtenna.
V R5O4
1 00MHz
Connect dislort¡on meleí 1o
1 OOMHz output terminal
1 00MHz
MO
T102 [WtDE IFT]
IA]
betvveen
DC
CÕnnect
ofPoint non- and
TP1 O ter-ference Cotnect DC VTVM belween
TP201 and chassis T2C1.tNARÉOW IFTJ'
tA)
DISTOBTION ALIGNMENT
OUTPUT LEVEL ALIGNMENT
No-signal
No-si-ônal of non-
¡nler-fergnce
Connect signal genera'
lor to coaxial antenna
term¡nal ihrough FM
ciummV antenna.
100MHz
( 1 00% Mcd.
with 400H2)
. lF selectcr switch io "wide"
. Tuning ât 100MHz
. Adjust for rninimum díslortion
loOMHz
{100/" Mod.
with 400H2)
Connect signal genera"
lor to coaxial antenna
ierminal ihrough Fl'/
dummy anienna. 1 00MHz
(100Yo Mod.
wirh 400H2)
Connect distortion meier io
oulPut terminal
Cqnnect AC VTVM to
output term¡nal
T102 (V!rtDE IFT)
t rrl
. lF s?lector switch tc "tJ¡de"
. Tunino êt 100 Miìz
. Short 6etween TP3O2 and TP303
. AdiLrst lor minimvm distortion'
. Repeai sieps {8) (9) and (7)-
T2O1 (NAñROIV IFT)
tBi
o lF selector switch tb "wiCe"
. Tunino at 100Mi+2.
. AoiusivRso+ to 1.4v cn \-/TVl'/
indication
Adjust for OmV of VTVM
inciication
WIDE IF AND NARBOì¡I IF OUTPUT LEVEL ALIGNMENT
o Short between TF302 and TP303.
. Tuning ât 100 MHz
. Ad¡usi'./R503 ic 1'4v on vîvM
ìñdicaiicn
V P5C3
1 00MHz Connect A.C VTVM to our-
pul terminal.
Connect signal genera-
lor to coaxial antenna
terminal through FM
dummy antenna.
100MHz
(10ff2É tr4od:
with 4COHz)
MUTING ALIGNMENT
. Servo tunìng slviich to "ôuto"
. Tunino at 100 MHz
. Ad.iusifor maximurn on VTVM
Conñèct DC VTVM be¡¡¡een
TPi 02 ãnd chassii. T2O2 (MUTING IFT)
T203 (MUTIi.lc IFT)
Connecl signal genera-
tor to coaxíal anlenna
terminal through FM
dr.immy antenna.
i 00MHz
('10C96 Mod.
with 4oOHz) 1 00MHz
f n ihe st61e where ad.iust,'nents in
tÈe thern 1 1 hàve been completeC,
fully turn VR402 clcckwise' and
then turn ttle same counlerclock-
rhe
Connect AC VTVM to
output terminal, ';
Connect signal genera-
iôr to coaxial antenna
lerminal through. FM 100MHz
(100% Mod.
with 400H2) 00Ml{z
l
FM SI
tor ¡o en
13 terminal
dummy enlenna
Apply 16dB
Conneci
tor to
1. Modul¿i¡ng ii
2. MODUI-ATI{:
3. OUTPUT ÑiC
4. PlLOT si-onaii
5. MPX CUT...J
15
16
17
¡o Piloi bandpass
19 Subcarr!er
cancel
20 \'vide
separêtion
21 Nerrc\ /
æp3f atiofr
22 Auto high-
bleñd
terminal through'
dumrny anlenna ì
Apply 1OOdB (10
îc set.
14
j .:l
'a
:l
23
I
CONNECTI(
CIRCUIT TO
BÉ ADJUSTSD
Voltage Ccn'
troiled Osciì-
lator {19kHz
Oscill¿tíonl
Level align-
ment bgt-
ween L anci R
P¡loi cancel
Auio lf
seleclo i'
-9030

o8
FM SIGNAL GENARA ADJUSTMENT
PO I NTS REM,ARKS .,,..
FRE, )UENCY DIA.L
SETTI N G
INDICATOR CONNECTION
(VTVM, SCOPE and
DISTORTION METER)
CONNECiION
MUTING LEVEL ALIGNMENT
Connect AC.VTVM to
output terminal. V R4O1 . Servo iuning swiich to "auto"
¡ Adjust so that ou tput can be
cbiained.
100
( 10(
w¡ll'
,1Hz
'/o Mod.
400H2) 1 00MHz
Connect signal genera-
tór to coãxial antenna
lerminal through FM
durnmy antenna
Apply 16dB (6.3¡V)
to set. SIGNAL METÊR ALIGNMENI
VRsO1 Adjust io ôbout "4. 7"
on siganl meîer scale.
10c
(30
witl
dHz
; Mod.
400H2) '100MHz S¡gnal meter of set
.:.:..
Connect s¡gnal genera-
tor to coaxial ôntenna
termiñal through FM
dummv antenna
Apply IOOdB {1OomV}
to set. FM MPX CIRCUIT ALIGNMENT
lator section
. OQì=14. : . -:" t'"':
.100%
. ll j n
ì L or R {separation adjustment)
: FM signal generator
.ì l'. Sisnal generated .......; IOOMHz
' 2. lnp,ut to the sÞt . 60dB
'The set is luned to 100MHz .
M signal generaior to 90% modulation, with
"L + R" and MOD to "1OO%.
.oN .
- Preliminarily
PILOT set to
1.,,Modulating freouencY...
2. MODULATION...,.,.
3. OUTPUTMODE.;....
4. PILOT signal . ,. . .;' .
5. MPX OUT...
at stèleo
ADJUSTING PROCEDURES
ì PLA.CES
GNAL
\TOR STEREO
MODULATOR PORTIONS TO BE
ADJUSTE D-
FOR FM
GEN
clRculr fo
3E ADJUSTEC
vR6Ò2 (19 kHz
oscillaìion) 1. Connect the frequency counîer ro TP6OI thròugh 100kO.
2. Adtust VR602 to oblaín lgkHz +30H2
Connect to ¿
terminal of t
through dun
anten n a
ì ten na
re set
Tìy
\on-modulatior
Vonaural signal
(Pìlot OFF)
Voltage Con'
t.rolled Osc¡l'
latór (l9kHz
Oscillation)
(Level alígnment)
vR702 1. Connecr AC electronic vollmeîer to "REC OUT" lerminal of
the set.
2. Adjust in such a manner that
tion of the antenna input and
is subjécÌed to R modulation
L outþut at the tirne of L modula-
B ourput at the time when input
are in the same level.
I
Connect to aþtenna
term;nal of the set
through dumrny
antenna I
L and R stereo
signal.
(Pilot ON)
ween L and R
Pilor bandpass
f¡ lÌer
Leùel align--
menr bei-
Pilot cancel Connect oscíllosbope or AC electronic voitmeter to TP602.:i
2. Repeat adjustments oí VR60l ¿nd L601 to bring rhe output
(19 kHz) to m¡nirnum:
Non-modulãt¡or
Stereo signal
{Only pilot ON)
VR60l
(pìlot cancel )
L601
(pilot cancel )
Connect to antenna
term¡nal of tþe set
through dummY
antenna
1. Connect distortion factor gauge lo "REC OUT" terminal of.lhe
2. Make adiustment sÕ that distortion of L channel outpui becomes
rnlftmum
I îen na
e set L and R stereo
signal
L602:
(pilot Bandpass
f¡ I ter)
.Connect tó a
ter¡m¡nal of 1l
through dum
antenna
'1. Connect AC elecironic voltmelgr to "OUTPUT" terminel of the
2. Make adjustment to brìng thg ouiput to .ninimum.
setl'Jon-modulalìor
Stereo signal cr701
(Subcarrier cancel)
Connecl tó ahtenna
terminal of the set
through dumhy
antenna i
VRTOi
(Wide separation)
1. Connect AC êlectronic vollmeter to "OUTPUT" terminal of the
set.
2. Make adjustments so Ìhat, when the ¿ntenna input is subiected
. to Lmoàulat¡on {or R modulation}, R channel outpul (or L
channel output) becomes minirnum-
the
Connect to
ierminal of
through du
antenna
LorR
Stereo signal
11 k{z 3oo/o
modulation)
Wíde
separation
1. Shori-circuìt TP302 and TP303 ìo form narrow circuìt'
2. nC¡ust VR703 in the similar order as in 20 (w¡de seperat¡on)
3. Afier complet¡on of adiustments, release TP302 and TP303
{rom the short-circuìted state-
Lor R
Stereo signai
(1 kïz 3Oo/o
mcCulation)
VR703
(Narrow se.oaration )
Narrow
separation
a
ihe
Connect to
terminal of
through du
aäîenna Connect AC electronic voltmeîer to "OU
set.
Z, Ae+o¡e edjustments, kêep VR5O2 fully turned coúnterc¡ockwíse'
3. Measure the outbutdifference (separation) between R chánnel
output and L channel output at the ìime when êntenna input is
subjected to L modulation.
4. Meásure the output dìfference between L and R as in the
previous item, wiih h¡gh-blend wilch set to "auto", and adÌust
. VnSOZ !o oblain the iame output difíerence (seoaration) as
measur?!d in the Previous ¡lem.
ITPUT" Ìerm¡na! of the
LorB
Siereo si-onal
11 k9z 3jo/o
modulation)'
VR5O2
(Auto high-blend)
Auto h¡gh-
blend
Auto lF
selectcr
Connecl to a
términal of the sel
thrcugh dÙmmY
ânlenna.
AC.¡usl the input
set to 31 dB
II
ntenna
I
t'o the
i
T3O1 (3OOkHz)
T302 (200kHz)
Connerjt io art"tenna
terminul of tnb sei
tiirouglr dumrlry- !
antennl. I i
Adiust rthe in(ut to
the set ito 60 dB. I
ñon-modu latior
Vonaural signal
14
13
15
' :r': '
'â^2
18
19
20
21
\4
in.
<J
r
7St
UX
rN-+r
To s.G.
(imp 75O)
E ALIG${
O FRONT
BUFJ
E
,. Trimmer
i:l .
;.i: ::
a..! ..
ij-;:
.:.. t:
:¡,. r
it':|.
Liil '
i:'.:'
iiti:
BUFF
ftimmer
n
c
Cc¡l

FM.SG
IFT
FM.S6 {r t2{ - 4OC8l
¡NÎERFERENCE SIGNAL
{lkHr 3e; Mod.)
RKS
irch to "auìo"
utpui can be
4.7t'
'u9h 100ko.
IN 37.5c¡
2id DET
OUT
To S.G. I
(imp z!n) I
To antenna
75n termì¡al
L--*-J
75O FM DUMMY ÂNTENNÁ
UKW-Kunstanteñne, 75ohm
Antenr¿ f¡ctive F$ 750
Fig. 1 (Abb. 1)
E ALIGNMEI{T POINTS
O FRONT END .2nd DET rit OET
'1T¡de" indiaror ro bê exlingu¡shed
ar ¡nreriercnce 3i9n¡l lryll ol 24 - 4&18 2 5ìgn¿l
75n
a le.
{CONFIRMATIOil OF FUNCTION!NG OF AUfO IF SÊLÉCÌOÂ C¡ACU¡T)
o rF clRculÏ
Lst OET ANI Coil
Coil Coil Coil (Prì.)
(GRN)A
Trìmmer
il
TP,I02
o
(GRN) (ORG)
DÊSIREO SIGNAL
{4OOH2 30% Àrd.i
ST€BEO
lroouLATO9
sr.9030
T203
L1
c
c't7
cT8 Lt ¿
Ø
L?
cL3
T1
L8
lT" terminal of
;ime of L modula-
t¡me when inPUl
l,al
:er to TP602.1'
ing thè output
'" lerminal of the
el oulput
-" terrninal of the
flimñer
,, frimmet (5ec.)
(Sæ.) Coil (Pri.) Ìimmer (Pri.) (Sec-)
TPr010-
\!toE &
lF Selector NARROW
WIOE DET IFT MUTING IFT
(u/roE
IFT
Coil Co¡l Coil (Sæ.) Trimmer-
ru m.
E MPX CIRCUIT
Left & Right WIDE
Levei
TP302
o
NARROW
Sep¿ration
R
lF Selector
2aOkH.z MUTING NARROW
MUTING
-" term¡na¡ of the
ìput is subiecled
I output (or L
v círcuit.
de separation)
)2 and TP303
i" term¡nal of the
cou n tarclockwise.
:wegn R ch¿nnel
, antenna input is
R as in the
¡to", ând adjusl
separation) as
02 so that wave- -
P101.
iP301 becomes
ü
TP301
o
TPq03_
' (oJ
Cancel Çancel
T302 T301
a
1601 :vco,
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