Schematic Diagram - Pioneer VSX-84TXSi Service Manual

1

2. SCHEMATIC DIAGRAM

QQ
2.1 PREOUT & CONTROL ASSY
3 7 63 1515 0
*2 XWZ4175
CN2805
A AKB7172
CN2806
CN2805
(1/2)
*2
2
L
1
3
R
CN2805
*2 (2/2)
5
C
4
6
SW
B
7
CN2806
C2891
*2
(1/2)
0.01
2
C2894 LS
1
STBY
3
GNDCH
RS
CN2806
*2
(2/2)
5
SBL
4
6
C
SBR
7
CN2807
C2892 STBY
SBL
0.01
C2893
TE
L 13942296513
STBY
SBR
GNDCH
JA2901
XKN3015
7
2
D 3
5
6
4
1
RX
GND
TX
SR
SR +
E
JA2931
AKP1213
GND 5
(NC) 9
(DTR)
4
(NC) 8
TXD(RD)
3
BUSY(CTS) 7
RXD(TD)
2
(DSR)
6
www
(CD) 1
GNDCH
F
AE
F
22
1
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2
PREOUT
(F)
R2802
IMX25
100
(F)
R2808
Q2802
(1/2)
10k
R2807
(1/2)
IMX25
10k
R2801
Q2801
100
(C)
R2822
IMX25
(C) 100
R2828
Q2822
10k
(1/2)
(SW)
R2827
(1/2)
IMX25
10k
R2821
Q2821
100
(S)
R2842
IMX25
(S)
100
R2848
Q2842
10k
(1/2)
R2847
(1/2)
IMX25
10k
R2841
Q2841
100
*2
(SB)
R2862
IMX25
100
(SB)
R2868
Q2862
(1/2) 10k
R2867
(1/2)
IMX25
10k
R2861
Q2861
100
R2882
STBY
STBY
R2888
Q2882
STBY
(1/2)
R2887
(1/2)
STBY
STBY
R2881
Q2881
STBY
R2901
STBY
L2901 QTL1013
D2901
L2902 QTL1013
L2903 QTL1013
L2904 QTL1013
C2942
STBY
C2933
1u
IC2931
1
C1+
2
V+10V
3
C1-
4
C2+
5
C2-
6
V-10V
100
R2931 7
R2932 8
100
MAX3232CPW
C2939
0.01 D2931
R2939
0
232C
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y
. i
2
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3
8
R2806
R2804
IMX25
Q2802
(2/2)
120
270
R2810
10k
R2809
R2803 R2805
IMX25 10k
Q2801
(2/2) 270
120
R2824 R2826
Q2822
(2/2)
IMX25 R2830
120 270
10k
R2829
10k
R2823 R2825
IMX25
Q2821
120 270
(2/2)
R2844 R2846
Q2842
(2/2)
IMX25 R2850
120 270
10k
R2849
10k
R2843 R2845
IMX25
Q2841
(2/2)
120 270
R2864 R2866
Q2862
(2/2)
IMX25 R2870
120 270
10k
R2869
10k
R2863 R2865
IMX25
Q2861
(2/2)
120 270
R2884 R2886
Q2882 (2/2)
STBY R2890
STBY STBY
STBY
Q Q
3 6 7
R2889
STBY
R2883 R2885
STBY
Q2881
STBY STBY
(2/2)
L2932
C2934
STBY
L2931
1u
QTL1013
16
VCC
15
GND
R2933
14
100
13
12
11
10
TXD
R2934
9
RXD
100
Q2931
2SC4081(QRS)
R2937
10k
u163
23 21 19
22 20
GNDV
VSX-84TXSi
3
4
2 9 9 4
(F)
(C)
(SW)
(S)
(SB)
1 3 1 5 0 5 8 2 9
STBY
D2951
m
co
17 15 13 11 9 7 5 3
18 16 14 12 10 8 6 4
.
N
CN4320
4
2 8
9 9
9 4 2 8 9 9
C2968 R2976
10/50 100
C2967 R2975
100
10/50
CN2802
1
XKP3082
2