Yamaha PX10 Service Manual page 146

A B
■PF (PN) CIRCUIT DIAGRAM (PX10/PX8/PX5/PX3)
1
C B 4 0 1
P H I
2
1
A G
2
+ 2 1 A
3
+ 1 5 F A N
to PS-W203
4
<P.17 Q:4> F A N G N D
5
- 1 5 F A N
6
D G
7
+ 3 . 3 D
3
4
F G 6
F A N G N D
5
A G N D F G 8 F G 9
6
D G N D F G 7
7
8
28CC1-2001158964-3
16
C D E
F A N D R I V E R
+ 1 5 F A N
A R 5 7 3 D G T L
Z 4 0 2
Q 4 0 1
J C 1 . 0
R 4 0 1
1 . 5 K
T P 4 0 1
T P 4 0 4
OP AMP
3
1
T P 4 0 2 I C 4 0 2
R 4 0 7
2
- 1 5 F A N
B A 4 5 6 0 F
2 . 2 K
( D )
C 4 0 5
R 4 0 6
1 K T P 4 0 5
2 2 0 0 P ( B )
T P 4 0 3
G A I N = 1 3 . 3 d B
F A N G N D
P O W E R S U P P L Y
R 4 0 2
DC-DC CONVERTER
0
T P 4 1 2
C 4 0 7
+ 2 1 A
2 5 0 m A
0 . 0 1 ( B )
B L M 2 1 P G 6 0 0 S N 1 D
L 4 0 1
8 1
V C C L X
7 2
B S T G N D
6 3
E N V C
5 4
S Y N C F B
I C 4 0 1
Z 4 0 1
J C 3 . 0
B D 9 6 7 3 A E F J - E 2
A G N D
1
F G H
T P 4 0 7
B A 4 5 6 0 F
6
T P 4 0 8 T P 4 1 0
I C 4 0 2
7 R 4 1 5
5
0
OP AMP
T P 4 0 6
LDO REGULATOR +3.3V
T P 4 0 9
9 5 0 m A BLM21PG600SN1D
B D 0 0 H C 0 W E F J - E 2
L 4 0 2 L 4 0 3
R 4 1 1 - R 4 1 3 : 0 . 5 %
3 3 U H
F B = 1 . 0 V
R 4 1 7
0
: Not installed （ 未実装）
I J
I C 4 0 2
C B 4 0 2 + 1 5 F A N
8
P H I
V +
1
F A N - P S
2
OP AMP
3
F A N G N D
V -
C B 4 0 3
4
C 4 2 5
P H I
F A N G N D - 1 5 F A N I C 4 0 2
1
F A N - P S
100/10(BJ)
2 C 4 2 4
3
100/10(BJ)
F A N G N D
C 4 2 3
+ 5 . 5 A
2 2 0 / 3 5
+ 3 . 3 D
R B 5 2 1 S - 3 0 T E 6 1
D 4 0 2
I C 4 0 3
T P 4 1 1
2 0 0 m A
8 1
V C C VO
7 2
N.C. FB
6 3
N.C. GND
5 4
E N N.C.
F I N
+ 3 . 3 D : 0 . 8 * ( 1 + 0 . 4 7 + 2 . 7 ) / 1 = 3 . 3 3 6 V
D G N D
■PF (PN) CIRCUIT DIAGRAM (PX10/PX8/PX5/PX3)
K L
PX10/PX8/PX5/PX3
W 4 0 1
6 P - S A N
1
+ 5 . 5 A
2
A G N D
3
+ 3 . 3 D
to FPN-CB304
4
D G N D
<P.15 F:9>
5
F A N - C O N T
6
D G N D
C B 4 0 5
P H I
1
+ 5 . 5 A
2
A G N D
to AIDIO-W401
3
+ 3 . 3 D
<P.10 A:5>
4
D G N D
5
S Y N C