BBK 9903S, Service Manual

Page: 55 / 94

CC
AGND
AGND
VGND
LFE CC SR SL R L
VI
EDO
Pb Y1 Pr
PDAT1 PDAT2
VCC
SPDI
F
LFE SL SR L R
RED WH
IT
E
L701 FB L702 FB L703 FB L704 FB L705 FB L706 FB
C7
01
102 C7
02
102 C7
03
102 C7
04
102 C7
05
102 C7
06
102
Y C
1
2
3
4
5
6 7
8
9
10
11
12
JK
701
AV8
A(B)OUT
1
A(A)OUT
3
RETURN
5
BLUE I
/O
7
RETURN
9
GREEN I
/O
11
RETURN
13
RED I
/O
15
RETURN
17
V-OUT
19
GND
21
A(B)I
N
2
A-COM
4
A(A)I
N
6
FUNC SW
8
CONT
10
NC
12
RETURN
14
BLK I
/O
16
TRTURN
18
V-I
N
20
JK
706
V
JS3921
R
704
4.7K
R7
05
75R
V
701
8050
V
702
8050
R
708
33R
R
709
330R R
710
2.2K
+10V
A
+10V
AGND
PDAT0
V
703
8050
R
711
1K
R
712
2.2K
A
+10V
PDAT2
C
716
104
AGND
VCC
AGND
R7
07
A
+10V
AGND
AGND
VCC
PDAT0
+10V
VGND
VGND
Pr
L709 FBSM
T
L708 FBSM
T
L707 FBSM
T
Y1
Pb
VGND
GREEN BLUE
RED
B G R
1
2
3 4
5
6 JK
702
R
C
A
-407
BLACK
TC702 1000uF/
10V
TC703 220uF/
16V
TC704 220uF/
16V
L710
FBSM
T
SPDI
F
R7
01
220R
C7
10 104
L713
FCM
L714
FCM
C
707
105
VGND
R
713
0R
AGND
VGND
R
703
68R
VI
N
1
VCC
2
GND
3
JK
705
OPTI
CAL
VCC
VGND
C7
11
104
SPDI
F
L712 FBSM
T
L711 FBSM
T
4 3
2 1
JK
703A
S-VI
DEO
5
7
6
JK
703B
V-OUT5
R
706
2.2R
TC701 220uF
R7
02
100R
VI
EDO
TC705 220uF/
16V
TC706 220uF/
16V
Y C
C
715
224
VGND
VGND
2 3 4 1 5 6 8 9 10 7 11 12 14 15 16 13 17 18 20 21 22 19 23 24 25 26 28 27 29 30
X
S701
XS3
0
TR TL
TR TL
C
717 104
C
718
104
CC
AGND
AGND
VGND
LFE CC SR SL R L
VI
EDO
Pb Y1 Pr
PDAT1 PDAT2
VCC
SPDI
F
LFE SL SR L R
RED WH
IT
E
L701 FB L702 FB L703 FB L704 FB L705 FB L706 FB
C7
01
102 C7
02
102 C7
03
102 C7
04
102 C7
05
102 C7
06
102
Y C
1
2
3
4
5
6 7
8
9
10
11
12
JK
701
AV8
A(B)OUT
1
A(A)OUT
3
RETURN
5
BLUE I
/O
7
RETURN
9
GREEN I
/O
11
RETURN
13
RED I
/O
15
RETURN
17
V-OUT
19
GND
21
A(B)I
N
2
A-COM
4
A(A)I
N
6
FUNC SW
8
CONT
10
NC
12
RETURN
14
BLK I
/O
16
TRTURN
18
V-I
N
20
JK
706
V
JS3921
R
704
4.7K
R7
05
75R
V
701
8050
V
702
8050
R
708
33R
R
709
330R R
710
2.2K
+10V
A
+10V
AGND
PDAT0
V
703
8050
R
711
1K
R
712
2.2K
A
+10V
PDAT2
C
716
104
AGND
VCC
AGND
R7
07
A
+10V
AGND
AGND
VCC
PDAT0
+10V
VGND
VGND
Pr
L709 FBSM
T
L708 FBSM
T
L707 FBSM
T
Y1
Pb
VGND
GREEN BLUE
RED
B G R
1
2
3 4
5
6 JK
702
R
C
A
-407
BLACK
TC702 1000uF/
10V
TC703 220uF/
16V
TC704 220uF/
16V
L710
FBSM
T
SPDI
F
R7
01
220R
C7
10 104
L713
FCM
L714
FCM
C
707
105
VGND
R
713
0R
AGND
VGND
R
703
68R
VI
N
1
VCC
2
GND
3
JK
705
OPTI
CAL
VCC
VGND
C7
11
104
SPDI
F
L712 FBSM
T
L711 FBSM
T
4 3
2 1
JK
703A
S-VI
DEO
5
7
6
JK
703B
V-OUT5
R
706
2.2R
TC701 220uF
R7
02
100R
VI
EDO
TC705 220uF/
16V
TC706 220uF/
16V
Y C
C
715
224
VGND
VGND
2 3 4 1 5 6 8 9 10 7 11 12 14 15 16 13 17 18 20 21 22 19 23 24 25 26 28 27 29 30
X
S701
XS3
0
TR TL
TR TL
C
717 104
C
718
104