Block Diagram - Yamaha YST-MS30 Service Manual

BLOCK DIAGRAM

• Subwoofer
JK1
INPUT 1
JK2
INPUT 2
YST-MS35D only
EEPROM
IC202
(MC24C02-W-BN6)
Regulator
W201 CN5
Q201
+3.3V
7 5
1 VDD 1 WP SDA
6
SCL
V
DD
JK202
L202
2 7
2
3 6
USB
3
INPUT
+B Vcc
DC15V Regulator
BIAS
IC6
JK4
IN OUT
From
GND
AC
adaptor
P.G RSPG LSPG
USB D/A Converter
IC201
(UDA1321PS/N101)
CN2 W202
31 21
SDA VOUTR 2 Rch 2
30 24
SCL VOUTL 3 Lch 3
V
SS
14
XTAL1
6
D–
7
D+
15
XTAL2
XL201
48MHz
Vcc Vcc
VR1
BIAS
3 2 6 8
IC3 IC3
L. P. F H. P. F
–6dB/oct BASS 12dB/oct
BIAS
YST-MS30 YST-MS35D
VCC
7
8 IR
IC1
TO RIGHT
VCC
SPEAKER
IL
3 2
IC1
1
OR
3
4
6
OL
Mute
RSP+
Q3
Vcc
7
STAND-BY
6 8 11
14
IC2 INPUT4– OUT4
H. P. F
6dB/oct
Power Amp
IC4
Vcc
(TDA7370BV)
BIAS
3 2 12
15
IC2 OUT3
INPUT3
H. P. F
6dB/oct
9
13
+B VCC S-GND
Vcc
3 8
VCC PW-GND
7 8 4 1
IC6 OUT1
INPUT1
L. P. F
–6dB/oct
5 2
INPUT2–
OUT2
Vcc Vcc Vcc Vcc
BIAS
Q6
2 4 8 7 8 7 2 4
IC8 IC8 IC7
IC7
A. N. I. C
14
• Satellite Speaker Unit (Right)
VOLUME
VR2
JK5 CN4
1 IR IR 6
3 OR OR 7
RSPG
4 IL IL 4
E2
7 OL OL 3
2 Vcc
9 Vcc
5
7 8 5 VCC VCC 2
2 E2 E2 5
JK5
8 PWS PWS 1
PWS
6 RSP+ RSP+ 8
9 RSPG RSPG 9
TO LEFT
• Satellite Speaker Unit (Left)
SPEAKER
JK3
JK3
+
LSP+
LSP+
–
LSPG
LSPG
SP –
+
SP
BIAS
Q4 Q5
Limitter
YST-MS30/YST-MS35D
Switch
Q2
Q1
Vcc
SW1
(Standby/ON)
+
SATELLITE
Rch
–
SATELLITE
Lch
SUBWOOFER
15