Service Manuals, User Guides, Schematic Diagrams or docs for : Pioneer Audio sx_4_5_6_7_arp_047_0_121
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ARP-047-O
Shot/,n tn thb b Model SX-7.
COMPUTER CONTROLLED
sx-7
STEREORECEIVER
sx-6
SX-s.SiX-EiL
SX-,QISX-4L
. The AM tuner of SX-4L and SX-SL is a two
wave-bandtuner with MW (mediumwave)and
LW (longwave).
Model SX-7 (and SX-6, SX-5 and SX-4) are new
types of receivers featuring microcomputers for
easier operation. The AM/FM tuner stagesincorpo-
rate quartz PLL synthesizers for high stability,
while the power amplifier stage is a non-switching
amplifier which achieves class A quality with class
B efficiency (not included in the SX-4 model).
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F H O A U G . 1 9 8 1 P r i n t e dn l a p a n
i
BLOCK DIAGRAMS
SX.4/KU
FM FRONT ENO FM IF AMP A DETECTOR FM MPX STEREO OEMOOULATOR FREQUENCY OISPLAY
I F A H P A D E T E C T O RI C ItPx STEREo
oEcooR Ic
-
toon
Fx l--
GNo !
TUNING OETECTOR
ii#n i*---- l
bl
PLL SYNTHESIZER CIRCUIT IC P06004
R6
R7 voo
R8
R9
,,o ffi
Rtl
KO
KI
K2
K3
FT4,/AMSLECTOR .'
IRQ
PO
8CO TO OECIHALOECOROER
X U TI N G
CONTROL
AUX vroEo
/
POWER AMPLIFIER
---4---r.:--]-: +
39.6d8 AT rtHr
R.CH
F U X C T I O NS E L E C T O R
REC
T FlADAPToi
i- : SPEAKERS
"rr r*S* t"
PLAY
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LOU0llESS
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l
t-
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lUN ER
sEcrrofl
Eq AXP A Cl 2 O v 6 0 H r
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2
SX-s/KU
FH FROIIT EiTO FM IF AMP. A OETECTOR FREQUET{CY OISPLAY
IF AMP A OETECTOR IC MPX STEREO LEO t{UTERIC OISPLAY
ocooER Ic
, L - 'L - ' n n
I l_t l_t .l_t l_t
oerscron
I
I
I stGr{AL
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our
I
TUNING OETECTOR
PLL SYNTHESIZER CIRCUIT
IC P0500rr
RtO RESET
Rrl
KO
r(t
FMlAM SELECTOR K2
PHONO EO. AMP
K!
PI
lRO
PO
8CO TO OECIMAL
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stAlto.BY
Ol
/E Y9 YO YI Y2 Y3 Y4 T! o:
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lux / vr0o
POWER AMPLIFIER
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il
L CX.
FutcTrofi sLcToR
Ic
rElrcrnor
'LIY steoxens
r-*:@*
OFF
Pq F
P[1"'o*tt
)r
f1---=J
| --|J
l'.-___
rcx rO
POWER SUPPLY CTRCUIT
cotTRoL
crlculT POWTR
TRATSFORMER
AC lzov,60Xt
AC OUiL EIS
3
SX-6/KU
LOCAL
osc
1
I
AM
ANIENNA
AM
STEREO
CONTROL
CIRCUIT
I t-l t-t t-t t-
x tN x ouT (D OC 08 S 25tHr RESET
1 t_t l_t.t_l t_l
20t9432t9t2/l OISPLAY
C IRCU IT
MEMORYI
/sToP1
rDowN
l 4039343332313029 2827 5 1615r4r3
TUNING L lN J + tNlOUT - SO LOUTJ
tu" CONTROL (PD6OO4)
{
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xiar_ n-ESernO STANO
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4 37 9 tO il t2 252423 222Ot9 t8 t7 34
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