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c)ProNEEr{
ORDERNO.
ARP-O15-O
COMPUTERCONTROLLED
s)(-
STEREORECEIVER
MODELSX.4COMES FOURVERSIONS
Type
IN DISTINGUISHED FOLLOWS:
AS
Voltag Remarks
KU AC 12OVonly U.S.A.model
s AC 110V, 120V,220Vand 24OV(Switchable) G e n e r a le x p o r t m o d e l
KC AC 12OVonly Canada model
YP AC 240V only Australia
model
r Thisservice manual applicable the KU type.
is to
o For the circuit description,pleaserefer to the model SX-7 servicemanual{ARP-047-0).
r Ce manueld'instuction serefdreau mode de r6glage, frangais.
en
o Estemanualde serviciotrata del m6todo de ajusteescritoen espafrol.
CONTENTS
1 . SPECIFICATIONS 2 S C H E M A T ID I A G R A M
C 13
2. F R O N TP A N EL F A C I L I T I E S 4 8. E L E C T I C A LP A B T S I S T.
R L 17
3 . PARTS LOCATION 6 9. E X P L O D EV I E W
D 21
4. PACKING 1 0 . ADJUSTMENTS 23
BLOCK DIAGRAI\4 I nEcuce za
o. P . C . B O A R D S N N E C T I O NA G R A M
CO DI I AJUSTE 27
PIoNEEFIELECTFICINICCG,F|PCTF|AI|CTN r-chome.M6su.o-ku.r
(,.a. FE N--ll aLaCtFCtNlce CC,FIPC'AATIC'N 85 Oxro.ct O.'ve. Moona.h'e, New Je.sey O2O74. u s a
PE illla tl.-CtFCtNlC IEUFC'PE, N.V. Lu'.haAe.-Haven 9.2O3o
FlCrialCF lLaCTElC'NlCa AUaIFIALIA F Y. LYo. 1 7E' I A4 Aolnda.y Rodd, B.aes'de
F H O T U L Y 1 9 8 1P r i n t e dn j a p a n
i
1. SPECIFICATIONS
Amplifier Section Distortion at65dBf)
(
Mono. ...100H2;0.15%
C o n t i n u oA v e r a g e o w e r0 u t p u t i s 2 0
us P 1k H z ;0 . 15 %
w a t t s *p e r c h a n n e l ,i n . a t 8 o h m s r o m
m , f 6kHz;O.2%
Stereo ....100H2;0.3%
2 0 H e r t zt o 2 0 , 0 0 0 e r t zw i t h n o m o r e
H l k H z ;0 . 3 %
t h a n0 . 0 4 %t o t a lh a r m o n dc s t o r t i o n .
ii 6kHz; O.4o/o
CaptureRatio. ....1.0d8
A l t e r n a t e h a n n eS e l e c t i v i t y
C l 4 0 0 k H z ;6 0 d B
T o t a l H a r m o n i c i s t o r t i o n 2 0 H e r t zt o 2 0 , 0 0 0H e r t z ,
D (
StereoSeparation ....1kH2;40d8
8 ohmsfrom AUX/VIDEO)
, 'l5kHz;
3 0 H zt o 35dB
c o n t i n u o u sa t e dp o w e ro u t p u t . . N o m o r et h a n 0 . 0 4 %
r
Frequency esponse R 2 0 H z t o 1 5 k H z+ 0 . 5 d 8 ,- 1 d B
1 0 w a t t sp e rc h a n n ep o w e ro u t p u t
l
SpuriousResponseRatio. ...65d8
. . N o m o r et h a n 0 . 0 4 %
lmageResponseRatio ......65d8
f n t e r m o d u l a t i oD i s t o r t i o n 5 0 H e r t z :7 , 0 0 0H e r t z= 4 : 1 ,
n (
lFResponseRatio, ..90d8
8 ohms, romAUX/VIDEO)
f A M S u p p r e s s i oR a t i o
n . 55dB
c o n t i n u o u sa t e dp o w e ro u t p u t . . N o m o r et h a n 0 . 0 4 %
r
SubcarrierProductRatio. ...40d8
DampingFactor l2O Hertz to 20,000 Hertz,8 ohms)
SCA Rejection ratio . . 60dB
50 M u t i n gT h r e s h o l d 2 9 . 3 d B f( 8 p V )
I n p u t ( S e n s i t i v i t yml p e d a n c e )
/
A n t e n n aI n p u t . . 3 0 0 o h m sb a l a n c e d ,5 o h m su n b a l a n c e d
7
PHONO ....2.5mYlb0kitohms
A U X / V I D E OT A P EP L A Y 150mV/50 itohmsk AM TunerSection
P h o n oO v e r l o a d e v e l( T . H . D .O . 1 " / o ,, 0 0 0 H 2 )
L 1 Sensitivity
PHONO 130mV l H F , f e r r i t ea n t e n n a . . 300pV/m
O u t p u t ( L e v e l /m p e d a n c e )
l l H F , e x t e r n aa n t e n n a
l 15gV
T A P ER E C .15OmVl2.2 itohms k Selectivity .27d8
Frequency Response S i g n a l - t o - N o i Re t i o
sa . 50dB
P H O N O RI A A E q u a l i z a t i o n )
( lmageResponseRatio ......40d8
. . . . 30Hzto 15.000H2t0.5d8 lFResponseRatio. ......73d8
A U X / V I D E O T A P EP L A Y
. Antenna B u i l t - i nf e r r i t el o o p s t i c k n t e n n a
a
uoe
" " 10H2 50'000H21!
to Miscellaneous
ronr'coniro; P o w e rR e q u i r e m e n t s AC 120V.60Hz
BASS. ...t8dB(100H2) P o w e rC o n s u m p t i o n . . .200W(UL)
TREBLE . .18d8(tOkHz)
'"':::'::::::':lY:
::'*::':l:':i?::Jil$Tl,
Dimensions . 4 2 0 ( W ) 9 8 ( H )x 3 1 1 ( D )m m
x
::
H u m a n d N o i s e( l H F , s h o r tc i r c u i t e d n e t w o r k )
A
W e i g h t( w i t h o u tp a c k a g e )
)
1 6 - 9 / 1 6 ( Wx 3 - 7 1 8 ( Hx 1 2 - 1 1 4 ( Di ln
)
5 . 2 k g ( 11 l b 7 o z l
PHONO 70dB Furnished Parts
AUX/VIDEO,TAPEPLAY. ....96d8 F M T - t y p eA n t e n n a 1
D r y B a t t e r y s u M - 3 " A A ". ....2
Operatinglnstructions ,......1
FM TunerSection
U s a b l e e n s i t i v i t.yM o n o ;1 1 . . 2 d 8 fl H F ) ( 1 . O p V , 7 5 h m s )
S ( o
5 0 d BO u i e t i n g e n s i t i v i t y
S *Measured pursuant to the federal Trade Commission's Trade
M o n o ;1 6 . 3 d B f( 1. 8 p V ,7 5 o h m s ) Regulation rule on Power Output Claims for Amplif ier.
S t e r e o 3 7 . 2 d B I( 1 9 . 9 p V , 5 o h m s )
; 7 NOTE:
S i g n a l - t o - N o i Re t i o
sa M o n o ;7 5 d B ( a t 8 5 d B f) Specifications and design subiect to possibte modification without
notice.
Stereo;70d8 at85dBf) (
S E T T I N GU S E T H E A M C H A N N E LS T E P
SWITCH (on the rearpanel)
B e f o r e t h e r e c e i v e r l e a v e st h e m a n u f a c t u r i n g p l a n t , t h i s
switch is set to the channel allotment olan of the destina-
tion. For the U.S.A., it is set to 1OkHz. Check that the niT-trn
s w i t c h i s s e t p r o p e r l y b e f o r eu s e . L'orr.
".r.J
Set it to the 9kHz position when the channel allotment
plan is changed and the intervals between the AM broad-
1 0 k H zp o s i t i o n
c a s t i n gs t a t i o n sc h a n g ef r o m 1 O k H z t o 9 k H z u n i t s .
NOTE:
Contact your dealer and inquire if you are not sure about the
channel alIotment plan.
LOADING HEBATTERIES
T
Two size "AA" dry batteriesare provided as accessories.
They are used to retain the station presettingmemory
functions.
B e f o r eu s i n gt h e u n i t , d i s c o n n e ctth e p o w e rc o r d a n d l o a d
the batteriesinto the compartmenton the rear panel as
follows: Fig.2
1 . S l i d et h e l i d i n t h e d i r e c t i o no f t h e a r r o w a n d o p e nt h e
c o m p a r t m e n t( s e eF i g . 1 ) .
2 . L o a d t h e b a t t e r i e sw i t h t h e p o l a r i t i e s p r o p e r l y a l i g n e d
with the marks on the inside of the compartment (see
Fis.2).
3. Align the tab of the lid with the interlockinghole and
depresshe lid lightly.
t
Insert tab into
i n t e r l o c k i n gh o l e
Fis.
3
Fis.4
Battery Precautions:
lf batteries incorrectly
are used.they may leakor even 4 . There are rechargeable dry cell batteries and non-
break open inside the battery holder. Observe the following rechargeable cell batteries.
dry Always readthe noteson
p r e c a u t i o n sw h e n i n s e r t i n ga n d r e p l a c i n gt h e b a t t e r i e s . the battery to be surewhich kind you have.
1 . A l w a y s b e s u r e t h e + a n d - e n d s a r e a l i g n e dp r o p e r l y a s 5 . When replacingthe batteries, alwaysuse the sametype
s h o w n a b o v ea n d a s m a r k e d o n t h e b a t t e r y h o l d e r . o f b a t t e r i e sc a r b o n i n c )a st h e o n e so r i g i n a l l y r o v i d e d
( z p
2. Do not use new batteries and partly used batteries at w i t h t h e r e c e i v e rD o n o t u s e a l k a l i n ea n d n i c k e l c a d -
.
the same time. mium typebatteires.
3. Do not use different brands and types of batteries at the
s a m et i m e .
2. FRONT PANEL FACILITIES
o powen
swlrcH @ T U N I N Gs w i t c h
Poweris supplied the unit when this switch is depressed
to This is used to tune in broadcasting stations.When de-
("in" position). pressed, the LEDs on the frequencyscalelight up in the
leftward or rightwarddirection, dependingon the direc-
t i o n c o r r e s p o n d i ntg t h e p a r t o f t h e T U N I N G s w i t c h
o
@ FM ST ER E oND IcA T o R
I which has beendepressed. frequencyscanning
and starts.
This lights when receivingan FM stereo program. TheTUNED indicator owstartso blink.
n t
When a station is located.the LEDs stop moving and the
@ TU INDICATOR T U N E D i n d i c a t o ri g h t s p .
l u
T h i s l i g h t sw h e n r e c e i v i n t h e F M b r o a d c a s t sT h i sl i g h t s
g (.
The sound from the station can be heard in about 5 sec-
when depressed FM switch).
the onds. After that sound has beenheardfor thesefew sec-
@ nru rNDrcAToR onds, the frequency scanningoperationstarts again.In
T h i s l i g h t sw h e n r e c e i v i n gh e A M b r o a d c a s t s .
t this way, all the broadcasting stationsare picked up in
succession.
NOTE:
@ F R E O U E N c scA L E
Y The sound of each station is heard for about 5 seconds but de-
T h i s s c a l es c o m p o s e d f 1 6 l i g h t - e m i t t i nd i o d e s L E D s ) .
i o g ( press the TUNING switch if this is not the required station or if
During frequencyscanning, the lighting movesfrom left you want to search the next station promptly.
to right or vice versa, depending the direction corres-
on
p o n d i n gt o t h e T U N I N G S W I T C H w h i c h h a s b e e nd e -
pressed.
@ FMswrrcH
Depress switchfor FM reception.
this
@ rurueorNDrcAToR @ nm swtrcH
This lights when the optimum tuning point has been Depress switch for AM reception.
this
l o c a t e d u r i n g r e c e p t i o nl.t b l i n k sw h e n s t a t i o n s r eb e i n g
d a
searched.
3. PARTS LOCATION
NO?'Sr
o The ! marh found on some component patts indicates the importance of the
6ofet! factor of the part. Therefore, when rcplscing, be sure to u8eports of identical
designation,
o For your Parts Stoch Contrcl, the faet mouing items ore indicdted uith the
marhs ** qnd *
** GENERALLY MOVES FASTER THAN ,
Thia clossificationeholl be odiusted b! eachdietibutor because depend, on model
it
number, temperoture, humidity, etc.
Front Panel
View
Knob {TUNING)
Display cover
AAD.4OO
ANR454
K n o b( F M l
Top cover AAD4O2
ANE.362
Knob (AMl
AAD403
-
Front panelassembly
Knob (VOLUME)
ANM075
AAB.273
Knob (POWER) ------------5
AAD.406 Knob (INPUT)
AAD.399
Knob (BASS,TREBLE,BALANCE) Knob (TAPE/ADPT.
MONO,
AAB.274 LOUDNESSI
AAD-405
Knob (MEMORY/STOP)
AAD4O4
Front View with Panel
Removed
AEL.379
P h o n e sj a c k { P H O N E S } (VOLUMEI
resistor
Variable
AKN-029
ACT-128
A r * Pushswitch (POWER 3{anged push switch
I *
ASG-521 (TAPE/ADPT. MONO,
LOUDNESS}
Variable (
resistor ASG'301
ACT-140
(TREBLE) *t Tact switch
resistor
Variable
ASG-177
ACT-140
Variable resistor Control assembly
ACT-o23 GWX-721
4. PACKING
No. Part No. De.cription
1. AHA-294 Side pad
2. ARB439 Operating instructions
3. ADHOo4 T-type FM ntenna s*613
4. AHD-961 Packing case
RearPanelView
* t Slideswitch(AM CHANNELSTEPI AC socker(AC OUTLETSI
,\
ASH-O15 AKP-039
rerminal(AM STEREOOUTI
AKB{76
Strain reliet
AEC-358
AC power cord
ADG.O52
Terminel(PHONO,
AUX/VtDEO,RECI Terminal{SPEAKERS)
AKB-079 AKE.lOI
Terminal(PLAYI
AKB{77
Top View
ti\ ** Fuse(5A)
AEK-1OA
Powertransformr
ATT39
.'! *r Fuse(3Al
AEKI Ol
5. BLOCK DIAGRAM
FM FRONT END FM IF AMP A DETECTOR FM MPX STEREO DEMODULATOR F R E Q U E N C YD I S P L A Y
I F A U P A O E T E C T O RC
I MPx STEREo L . P , F/ A F A } A P
DECODERC
I L-ouT
300n
FMF
GNO !
'I
oerecro
a
SIGNAL
IIETER
Io"
--
TUNING OETECTOR
3 E. X'TAL
bl
PLL SYNTHESIZER CIRCUIT IC P06004
R7 Voo
r IC M54922P t^ R8
l,-o.0. I llt- "
- oarr I a R9
I osc 351 I
^M/FM
rNl"
I'
Rto RESET
PO
G) LD Rtl
KO
KI
X2
K3
+35.6d8 ATlkHr
FM,/Ail sELEcroR .'
IRQ
PO
8CD TOOECIMAL ECOROER
O
Oo
va vs vo Yt Y2 Y3 vi
or vurE
MUTING
CONTROL
A U X, / V t 0 O
POWER AMPLIFIER
FUNCTION ELECTOR
S
r ^ SPEAKERS
r*}@*
g oFF
fcl
q MoD
sw -o
sw
f-
v MoNo oN
R, CH
-r
_=r"f I pxorts
LOU0f{ES
S -+&
sw ll -j-vn
oFF
IONE CONTROL #
I ', --{1
v- j
R . C H
-
POWER SUPPLY CIRCUIT
I
rUNER P O W E RS W I
SECTION
-1#orr I
f Fr tql ' AC12OV 60Hr
EQ AMP
lj jf
F UN C T I O N
S L EC T O R
a
E 1 I
l2
6.P .C.BOARDS CONNECTION
DIAGRAM
I 3
A
CONTROL Ass'y(GwX-72 |)
Q2
B
C
VOLUME AssV CONTROL Ass'y A
D
4 5 6
COMPLEX Ass'y
CONTROL Ass'y
(awx-7,7)
TC202
Qro5 o2o4 Q2r3
Q2O5
7 B I
t'-o'P *"""Pg*'fl
g"'3'
i h*l
l-.:,."". rft--r-;r T ',*i
| ;j'* | l, *rlT,t- i,i*,*l
r,,{*.is*
,isrlvE;:^'
\""' "-1.1:*''
l.'Lt I l"{
l1 ? T I I -,s
?-.-' I,,,{:f
\l=:;,***,,1
------+I
l,,uq1taJ,
=u.1-,;rj, , \lr, t.tl io*+*"
,,-,,H-i."
I T
, n* t ,i,#;."
rilj.ilF]"' rr'r,',:
ffii;riqik{i
';i.i,4t#ht*;tl,,q
,*lti;
** ** * t l#:ilil
i;lihqffi,-i?# rp,a*
tu
II'L STEREO OUT
Rll fir12
?2K 2,7X
i,lr:-l ii;:i:,,fGl-i:r
s,T,,i,'
Inwffi**"{,t'$trffift.b
ffiffiffi
lffiffiffil '
Lht ,.P .
'9,:..r'\i '-rr
tRe6 q
I
l0/1/2r)
fi9.:i.i. :re
i .l il2!. r:i
.
\
0104,r05 Sr555
1 l' y" t lo(r?!ii,.
.. I cisiD03
Q3os' 2sc2362
310
llSi; i3l r..'r"'
rc5o,
03,3.3,4
il!,,*
3i33:i3i 5 0 5 2 5 P
Q3?1.322 25A650 2
Q 3 2 7 '3 ? 8
-e'.o .- zs.o
29.O ' ,-'iu".o,
f tzsot
, {"'(-"5o) I i}r\,
a\) \ I
qree
I
z\Qrzs
--l(4b
t
*'1 f..,,LS,,.
H* -bi" 16
"-d"' 1 * il.gJt,,,- ".,,
2)ll 2{(
I
'1tf ,I I
ii&".."-,* *1';t *,5"
,*r]f I
*^l,1-rz igu',00p400
,;*1 -ftr*,iil l. h
r g.L ,- r z , iil,$ t, { { ,| } tt.ffi
Jnaz - R @; ir
illrr
,J1 'I rp ttortow J
""1 " f,rp,! ,
'1 l"l ll1
, flr ]h,.
ll I t l?;;"uoo
i 4n{ t I
tEut
I A lono
l " * o , 0 ,] llt t h,:q
l&ttel 'hpj.i'^
of;rf#r
Qe6 . ^-^ 6 l:l ^. t;ttl
"," " rx rl*5J -t'*'i,}.ir 6r rt* ,,{,lli-hlr+:,s'
-tsa:'l- i
iI
+,;{, "'i'r
150(
'$',1l;P ,hfri {'f'
l?"#;t Ifqf*fo. i Ii {,,p1
i"ti"tt:i"i1l
o
1{ t
t rl- 'i**iff-,tJ'i*?'
^ ,i3il,*',.,'r,*r'"
tt
,rl' ,r,*
c143 t
ll or ciir
R$:
22l(
, 5';$6;lsil 22125
Q32a Q3O6 Q?O2 Q 3 r O O 3 3 OQ 3 2 9 Q 3 ? 1 Q 3 1 7 Qrc7Q2r5 Q4O4 Q4Or Q?3
Q324 Q3rO O1O8 Q314 Q313Q3O9 Q325 Q327 Q2O6
Q322 Q305
7 I
A
-
AC | 20v
SOHz
SWITCHED UNSWITCHED
loow toow
B
q
HEADPHONES JACK Ass'y
c
D
SWITCH Ass'y
I
I
I
l2 3
7. SCHEMATIC DIAGRAM
NOTE: 2SC1919
The indicated semiconductors are representatiue ones 2SC710
only. Other alternatiue semiconductors may be used and LotNo
2sAz26s
are listed in the parts list. h.E
A
- 3OOn
L 750
-
| 22o
I a , l
B o2d- 1,2
NV1226
-
C 0!t(
all
tsll
025
f"*
I
t-rdl
-
aL CH
aux/vt0E0
tpiNl
D
L CH
.PLAYIIN
| *..ror, .
""
fi5 tl
-T
PLAYIIN R ca
l
I
,]-
1!/-
_t 1 2 3
4 5 6
2SC1845 2SC1384 254684A
258560
Type No
2SA992 Type No
Type No Type No
- "
I ____:3r" I -{}!)+.-"i_
qro,fi1 2sa726s l.;-r*;l I n*l 0417
rsl555 EATTERY
.,.o oc7.2, o, o,,,1
AF AMP
1.
O '. I, O +
" i r*iJ o40r
2SCr3A4
_F-l 6 j
r6ltr I
l -
Ilt
il3
li"-$. 1 i F;n*", :1J i;tl".".
'A ,4.
l*l
:
t
tl
n""' E
F
t!r lEl] lljlllril
fr
l"''" d
?
l I I ^:::"
il
t__
D4C
J fr#f,:
A
*-.rQ/:',1,'* ,l ,; , 4
.,j
0404,4O5 rOEZ