94
SC-LX81
1
2
3
4
A
B
C
D
E
F
1
2
3
4
10. SCHEMATIC DIAGRAM
10.1 AUDIO ASSY
A
!
!
A_A_A
N
A_FRI
N
A_A_A
N
A_FLI
N
A_A_A
N
A_S
W
I
N
A_A_A
N
A_CI
N
A_A_A
N
A_RSI
N
A_A_A
N
A_LSI
N
A_A_A
N
A_SBRI
N
A_A_Z2L_
V
LI
N
A_A_Z2R_
V
LI
N
A_A_DA_FRMIX
A_A_DA_FLMIX
A_ADAS
W
OUT
A_ADACOUT
A_ADARSOUT
A_ADALSOUT
A_ADASBROUT
A_ADASBLOUT
A_A_PHO
N
O_R
A_A_PHO
N
O_L
A_A_A
N
A_SBLI
N
A_AFRO
N
T_RI
N
A_AFRO
N
T_LI
N
A_A_Z3L_
V
LI
N
A_A_Z3R_
V
LI
N
A_ADAFLOUT
A_ADAS
W
OUT
A_ADAFROUT
A_A_A
N
A_CI
N
A_A_A
N
A_S
W
I
N
A_A_A
N
A_LSI
N
A_A_A
N
A_RSI
N
A_A_A
N
A_SBLI
N
A_A_A
N
A_SBRI
N
V
-7A
A_ADAZFLOUT
A_ADAZFROUT
G
N
DDAS
A_A_PHO
N
O_L
A_A_PHO
N
O_R
A_A_A
N
A_FRI
N
A_A_A
N
A_FLI
N
G
N
DA
G
N
DA
G
N
DA
CKS33
8
4-A
CN5002
V
-12A
1
V
-12A
2
G
N
DA
3
G
N
DA
4
V
+12A
5
V
+12A
6
V
+6AD
7
V
+6AD
8
G
N
DA
9
G
N
DA
10
FL AD
11
G
N
DA
12
FR AD
13
G
N
DA
14
SIRIUS R
15
G
N
DA
16
SIRIUS L
17
G
N
DA
1
8
G
N
DA
19
10u/50
C5504
10u/50
C501
8
ACH1479-
C5202
ACH1479-
C5204
N
M
C5507
N
M
C5509
10u/50
C5503
2.2u/50
C5501
47u/16
C5020
47u/16
C5019
10u/50
C5004
47u/16
C500
8
2.2u/50
C5502
47u/16
C5007
10u/50
C5017
10u/50
C5003
C5703
470p/50
*C5123
C5022
0.1u/16
C5706
N
M
C5021
0.1u/16
*C5151
C5705
0.01u/50
*C5002
C5206
100p/50
CH
C5205
100p/50
CH
C5203
330pF
*C5071
C5201
330pF
*C5006
*C5171
*C5113
C5506
N
M
*C5101
C5505
N
M
C570
8
0.1u/16
C5709
470p/50
C5710
0.1u/16
*C5163
*C5112
*C5102
C5015
1200p/50
*C5005
*C5164
*C5143
*C5124
*C5051
C5719
470p/50
C5301
0.01u/50
*C5072
C5265
0.01u/50
*C50
8
1
*C5142
*C5010
*C5111
C5013
1200p/50
C5016
1200p/50
*C5009
C5702
0.1u/50
*C5173
C5014
1200p/50
C5711
470p/50
C571
8
0.1u/16
C5701
470p/50
*C5172
*C5161
*C5144
*C5094
*C50
8
2
*C50
8
4
*C5091
*C51
8
2
*C50
8
3
*C5074
*C5103
*C5052
C5011
8
200p/50
*C5132
*C5093
*C5133
*C5131
C5704
0.1u/50
*C5092
C5712
0.1u/16
*C5032
C5713
470p/50
C5302
0.01u/50
*C5141
C5714
0.1u/16
C5707
N
M
*C5104
C5266
0.01u/50
C5715
470p/50
*C5073
*C5122
*C5031
*C5134
*C51
8
3
*C5121
*C5001
C5012
8
200p/50
*C51
8
4
*C5174
*C5044
*C5042
*C5114
*C51
8
1
*C5152
*C5162
*C5043
*C5041
D5501
UDZS7R5(B)
D5502
UDZS7R5(B)
G
N
DCH
G
N
DCH
G
N
DCH
G
N
DCH
G
N
D D
G
N
DCH
G
N
DCH
G
N
DCH
G
N
DCH
IC5301
TC4066BF
N
I
N
/OUT1
1
OUT/I
N
1
2
OUT/I
N
2
3
I
N
/OUT2
4
5
CI
N
2
6
CI
N
3
7
V
SS
8
I
N
/OUT3
9
OUT/I
N
3
10
OUT/I
N
4
11
I
N
/OUT4
12
CI
N
4
13
CI
N
1
14
V
DD
IC5001
N
JM4565MD
5
4
6
7
8
IC5001
N
JM4565MD
3
4
2
1
8
L5132
N
M
L5131
N
M
L5112
N
M
L5111
N
M
L5042
N
M
L5041
N
M
L5004
N
M
L5003
N
M
L5001
N
M
L5002
N
M
RT1
N
241M
Q5301
RT1
N
241M
Q5269
RT1P241M
Q5302
Q5501
2SD1
8
5
8
X(QR)
2SB1237X(QR)
Q5502
R50
8
3
330
R5154
330
R5111
100k
R51
8
2
470k
R5014
470
R5009
390k
R5172
470k
R51
8
3
330
R5002
100k
R5164
330
R5094
330
R5001
100k
R5144
330
R51
8
4
330
R5173
330
R5005
100k
R5136
150k
R5115
150k
R5104
330
R5006
100k
R51
8
1
470k
R50
8
4
330
R5174
330
R5054
330
R5702
0
R5703
0
R5201
1k
R5202
1k
R5010
390k
R5042
100k
R5131
100k
R5041
100k
R5043
2.2k
R5044
2.2k
R5203
N
M
R5015
220k
R5013
470
R5132
100k
R5133
2.2k
R5007
560
R5161
470k
R5114
2.2k
R5134
2.2k
R5033
330
R5116
150k
R5123
330
R5073
330
R5113
2.2k
R5053
330
R5320
47k
R500
8
560
R5112
100k
R5016
220k
R5143
330
R5171
470k
R5012
30k
R5034
330
*R506
8
1M
R5124
330
R5011
30k
R5163
330
R5035
N
M
R5036
N
M
R5055
N
M
R5056
N
M
R5075
N
M
R5076
N
M
R50
8
5
N
M
R50
8
6
N
M
R5095
N
M
R5096
N
M
R5105
N
M
R5106
N
M
R5125
N
M
R5126
N
M
R5145
N
M
R5146
N
M
R5155
N
M
R5156
N
M
R5165
N
M
R5166
N
M
R5175
N
M
R5176
N
M
R51
8
5
N
M
R51
8
6
N
M
R5162
470k
R5093
330
R5504
100
R5503
100
R5502
4.7k
R5074
330
R5501
4.7k
R5701
N
M
*R5067
1M
R5269
47k
R5153
330
R5103
330
R5135
150k
V
+7A
V
-7A
V
+7A
V
+7A
V
+12A
V
+7A
V
-7A
V
+6AD
V
-12A
V
+7A
V
-7A
V
+7A
V
-7A
V
+7A
V
-7A
V
-7A
V
+7A
A_A_TU_R
A_A_TU_L
22u/50
C5035
N
M
C5036
22u/50
C5055
22u/50
C5056
22u/50
C5075
22u/50
C5076
10u/50
C5045
10u/50
C5046
22u/50
C50
8
5
22u/50
C50
8
6
22u/50
C5095
22u/50
C5096
22u/50
C5105
22u/50
C5106
22u/50
C5125
22u/50
C5126
22u/50
C5145
22u/50
C5146
22u/50
C5155
22u/50
C5156
22u/50
C5165
22u/50
C5166
22u/50
C5175
22u/50
C5176
22u/50
C51
8
5
22u/50
C51
8
6
R5031
470k
R5032
470k
R5051
470k
R5052
470k
R5071
470k
R5072
470k
R50
8
1
470k
R50
8
2
470k
R5091
470k
R5092
470k
R5101
470k
R5102
470k
R5121
470k
R5122
470k
R5141
470k
R5142
470k
22u/50
C5207
22u/50
C520
8
10u/50
C5115
10u/50
C5116
10u/50
C5135
10u/50
C5136
G
N
DCH
R5742
N
M
G
N
DA
R5743
0
R5744
0
G
N
DA
R5045
150k
R5046
150k
R5151
470k
R5152
470k
TC4053BF
N
IC5255
1Y
1
0Y
2
1Z
3
Z-COM
4
5
0Z
6
I
N
H
7
V
EE
8
V
SS
9
C
10
B
11
A
12
0X
13
1X
14
X-COM
15
Y-COM
16
V
DD
*C5153
*C5154
G
N
D A
BD3473KS2
IC5201
SBLOUT
1
SBROUT
2
COUT
3
S
W
OUT
4
SLOUT
5
SROUT
6
FLOUT
7
FROUT
8
V
EE
9
CLOCK
10
DATA
11
DG
N
D
12
V
CC
13
T
N
F1
14
B
N
F1
15
BOUT1
16
BOUT2
17
B
N
F2
1
8
T
N
F2
19
AG
N
D1
20
AG
N
D2
21
SBLI
N
1
22
SBRI
N
1
23
CI
N
1
24
S
W
I
N
1
25
SLI
N
1
26
SRI
N
1
27
FLI
N
1
2
8
FRI
N
1
29
AG
N
D3
30
ADCL
31
ADCR
32
AG
N
D4
33
SUB1R
34
SUB1L
35
AG
N
D5
36
I
N
R1
37
I
N
L1
3
8
I
N
R2
39
I
N
L2
40
I
N
R3
41
I
N
L3
42
I
N
R4
43
I
N
L4
44
I
N
R5
45
I
N
L5
46
I
N
R6
47
I
N
L6
4
8
I
N
R7
49
I
N
L7
50
I
N
R
8
51
I
N
L
8
52
I
N
R9
53
I
N
L9
54
I
N
R10
55
I
N
L10
56
I
N
R11
57
I
N
L11
5
8
I
N
R12
59
I
N
L12
60
AG
N
D6
61
I
N
R13/FRI
N
2
62
I
N
L13/FLI
N
2
63
I
N
R14/SRI
N
2
64
I
N
L14/SLI
N
2
65
I
N
R15/S
W
I
N
2
66
I
N
L15/CI
N
2
67
I
N
R16/SBRI
N
2
6
8
I
N
L16/SBLI
N
2
69
AG
N
D7
70
I
N
R17/RECR1
71
I
N
L17/RECL1
72
I
N
R1
8
/RECR2
73
I
N
L1
8
/RECL2
74
RECR3
75
RECL3
76
RECR4/SUB2R
77
RECL4/SUB2L
7
8
AG
N
D
8
79
AG
N
D9
8
0
R
W
JA5001
XKB3017-A
R
W
R
W
JA5002
XKB3017-A
R
W
R
W
*JA5004
R
W
XKB3017-A
R
W
JA5005
XKB3017-A
R
W
R
W
JA5006
XKB3017-A
R
W
R
W
JA5007
XKB3017-A
R
W
R
W
JA500
8
XKB3017-A
R
W
R
W
JA5009
XKB3017-A
R
W
D5201
1SS302
R5301
6.
8
k
R5303
6
8
0
R5304
6
8
0
R5305
8
.2k
R5306
8
.2k
R5302
6.
8
k
C5209
0.01u/16
CFHX
C5210
0.01u/16
CFHX
*C5053
*C5054
*C5033
*C5034
C5511
CH
1000p/50
C550
8
CH
1000p/50
C5510
CH
1000p/50
R5030
0
22u/50
C503
8
R503
8
N
M
R5040
N
M
*R5003
*R5004
ADX7653-B
JP5001
1
V
+6AD
2
V
+12A
3
G
N
DA
4
G
N
DA
5
V
-12A
D
V
R2
D
V
R1
D
V
R2
V
IDEO2
CD-R/TAPE
V
IDEO1
PHO
N
O
CD
D
V
R1
7.1CH I
N
PUT
EQUALIZER AMP
FL
FR
C
S
W
SL
SR
SBL
SBR
PHO
N
O/MULTI CH SEL
OUT
I
N
OUT
I
N
T
V
/SAT
D
V
D
PHO
N
OSEL
MULTI CH
IC5255
PHO
N
O
SELECT
L
H
(1/2)
(2/2)
(MAI
N
)
(MAI
N
)
I
N
OUT
CD-R/TAPE
I
N
PUT SELECTOR
&
V
OLUME
(G
N
DDAS)
(G
N
DDAS)
C
N
7502
V
C
N
7042
F
(SL)
(CD)
(FL)
(CD)
(D
V
D)
(T
V
)
(F
V
L)
(D
V
R)
(ZO
N
E)
(FL)
(S
W
)
(C)
(SB)
(F)
(CD)
(CD)
(TL)
(D
V
D)
(T
V
)
(SL)
(FL)
(C)
(SB)
(S
W
)
(D
V
R)
(F
V
L)
(REC)
(REC)
(REC)
(REC)
(REC)
(REC)
(PHO
N
O)
(PHO
N
O)
(ZO
N
E)
(SB)
(S
W
)
(SL)
(C)
(FL)
(PHO
N
O)
(TL)
(F)
(SB)
(ZO
N
E)
(ADC)
(F)
(C)
(S
W
)
(SL)