Schematic Diagram - Pioneer SX-2900 Service Manual

. SCHEMATIC DIAGRAM
"METER
veer ov S-METER vco 2 ~ 2
9 0 OO O20 0 ™E—— sn ae
Fez. at 25
0261,0262:
J
: RUZ
DATA CONTROL tuner mute [_]
TUNER MUTE Q103: +B
SWITCHING 22k
i
oO
STEREO
Gai
stereo ||
C301 R301,
-| -
-
13
rs *
O
STOP
[o] 9 1630
CE
0.22/50
stop |O
ae
6 tay
8
: iP
4.7
C160
i
(308 FE MODULE
1000p
: RE AM
0103 RNZ201
inka
}0,04
E
MUTING
foy i
—>
O
Law
FUNG STROBE
FUNC STROBE pas 27k
are sen Foss
49]
be
cE
C303 || 229
atk Fsexn Ty
5
IC}
D. GND.
f
Q
DATA Ri2zt ttei20
lo
Pes
°
tk P22/50
7 Lee |
6
hae '
Sigs
ad
¢304
"| (32
SH-2900/KUC,SD AND SX-2A0/KUC ONLY
a abe saslemoonian meee s
na0G
2 gs
eS st Ne
1 1
- i -
' CNS Je!
= A
Wc :
tT
I
1€361 © VOL. VOL IN2
O i 4
t
FM & AM DETECTOR
(rc (—
!
vou nt [5]
6 aes S ic301
=
Ul
ae 2
vou Leo] -| Tt
(272)
oa ee 17s
TAT291S O O oa & os
~ 52t,
ry
i [a3
CI Ud
26 || 5 Sg 3
G=33
ge
Vs OUT! Vrer INA
1€301
NIM4556
AXx1011
Ie15t 35 | |e* 7 6¥| | eea5
' iss
5 6 7 8 9
3||z wo. GS) | ago Bs AM RF
ANT470P. wr es zs au
Se? x
|] Jaa
IC 301: PRE AMP.
} TUNING
gs] |Ps af
BS} | 535s FUNC CK
ides
BLOCK
feo
& SSs°
ho"
see
4
EE
ag8
2
1
i
R310 tk
1 3 Ny
: '(8
8 o
;
3s
1 $3
R309 0 tk
,
|
a
H)
oO zi
ad
i 1
'
151-0153,
0153 MUTE 1 1rd ANTEOS bs
2SA9338 mae (ce) tt
i c3644i! B46
2
Tio 0.1725 F |
Pa r
1e131 :
ss 288
wd) rye (abana Vaseiiwith LED to
| 1 =
4 $X-2900/KUC : ACX1035
1 I [mace
i
.
te ee
ees i!
|
;
SX-240/KUC: ACXI052 |
| 1 {
1e13t
: :
VOL IND. DRIVE
é l ]
Lm7oo1
pit2 7
' .
10OKNx2 Ly VOLUME i . |
1
'rete 7
,
afi VR_ ASSEMBLY s1-2900/80c
i '
H
ONLY
1
a! -
-
! |
1
|
! r
{ SX-2900/KUC,$
l L S e e ee ee ei ae i 1 | SX-240/K0C ne
913:
A
| vR301 { Si-280
{ 100k x2 'SX-1901 To ADDRESS 10-¢
; RET ION i
40k
i i by
1 vou.
H ror
0,
:
1740s
ne
ct"
}
2sc
SX-2900/KUC
1
0131, a lee
' SX-2800/KUC
'SX-2900/SD SX-1900/KUC
|
!
[oy
:
L131 PARTS NO.
SX-240/KUC SX-1900/SD
| los
. i
+8 RIPPLE FILTER
_. — VOLUME
assios
[rna,. woxl
C153 C154
1500pF 1200F 1200pF LL
i
eu
|
C165 Ci66 Nothing Nothing 330pF cist 4 (7200MH2) L c132 3 S
15 15 =
NS OO
R
AWZ3267 = 51-2900/80c
AWZ3269 51-2900/50
'
AWZ3271 5x-2800/K0C
;
4 i2y.>
AWZ3273 Si-1900/Kuc,s0
Sa
:
AWZ3293
sx-240/K0¢
<-12V >
vy >
camera?
r PLAY IN|
sree AO
150mV /50k0
R223,
ev
330 E
TAPE 2
~ 0523 :Hssio4g -02
:
Be oe a Q501~ 0504, 0513, 0514, 858} -,B883: Q541, 0542, 055170554, 01.04 * : POWER AMP
[ 150mV/2.2k @
R221
F
a; [2] 22k
551
rs35_] 2.2/50
psai
rser A 400p/500|
os ;
ae
ps23 lr
A RSS! 5X-2900/KUC,SU
150mV/50kO.
: |
.
('K)
ave SX-2B00/KUC
A\Rs63 10 (vaw)
i
523
TAPE 1/DAT
12p/500 Ee
R&S
REC OUT
eee EC OUT
(36.4)
L Bomvr2.240| | QD
Si idsoynuc,sp
uh
R525 240K
a
A\ R864 10 (174W)
VCR/ LINE CO
RSO7
900/KUC,SD|SX- 1900/KUC SD}
{150mv/50k0
390
= 2B00/KUC 1S¥-240/KUC
564 C562
R205 Ic201 :
C243 4
+
0.047 T° 0.087
1M PHONO-EQ
On
R521, R522 | 4.3kQ (1/4W) | 5.6k0 (1/4)
Lech
' e201 (172)
551, Q552 | 283298
28C2235
216
Oe RC4558DXP
[C4
SX-2900/KUC, SU
oe5i, 9
rses | R566
150mv/50kQ.
SK-2800/KUC
0553, 9554 | 2SA1306_ | 2SA965
10 10
aaa Lr
_
r 0813 *
Qt, a2 28C3181N 25C3180N
aa (vaw) J (1/4w)
riot
' 2801845
ses 03, 94 2SA1264N 2SA1263N
nez2 sae j
ears 28C2240 4.7k
Z.Sav/50Kn Cc Ret
el
ye253 (v2)
5035 |
op/300.
L 560k
PT
Yoon |
0621, 2622 :
[10]
!
OVER LOAD DETECT.
c201 BUFFER > 4 '
e503 !
9523
583 'ty
Na
ey
* Ore 1000p Vane ae 28C2705 asae A
100p/500}
'SX-2900/KUC,SD
+
SX-2800/KUC ONLY
|
\
Fy
[ee]
[pszr,beee: HSS104-02
44.2) Le Se 2 NR re ieee Se ad el
" PHONO Oo
tes]
$X-2900/KUC,SD G601,Q602: DC DETECT
2,5mv/50kn.
C504
SX-2800/KUC
[ 26]
Q603
et |
[fer
2saioee
'Cc
(-36.4)
Sonn S08
a
SX-1900/8UC SD
REOS Rech 3
'SK-240/ RUC
100
VCR / LINE
16202,
603 yf
180mv/50Kn a
TeSI64N
100/16
REC OUT
450mv/2,2K2,
506
SX-1900/KUC,SD
[ luge
| ld
R508
606 ROS
S4-250/KUC
TAPE 1/ OAT
R208
a7
RNIZO1 ae oe
R220
1€202 : FUNCTION 1¢
#3, 1
PLAY IN
K)
IN aéoe i
S
(CF) RNIZ203
& 4
=
i 4 o =
REC OUT
RSS.
a
9603 ,0605,0606: | cgog (C3 SX-2900/RUC,, SD
1SOmv/2.2k9.
mute | 5°98 SK-2800/KUC
icboe 'SK- 2900/KUC,SD 'SK-1900/KUC,SD R528 e582
TAPE 2
'SH-2900/KUC
SI-240/KUC
4 ___|
| 9513, 0514 : RSt1, R512:
L
CURRENT MIRROR
LOAD RESISTOR
- ee
—_—— ————
—_———————__
's —_—_— <
- - - - - - -
" - - - Zz ES ©
2