Yamaha YST-MS55D Service-Handbuch - Seite 19
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- 1. Table of Contents
- 2. To Service Personnel
- 3. Front and Rear Panels
- 4. Specifications
- 5. Internal View
- 6. Disassembly Procedures
- 7. Usb Port Operation Check
- 8. Block Diagram
- 9. Printed Circuit Board
- 10. Printed Circuit Board
- 11. IC Data
- 12. Schematic Diagram
- 13. Schematic Diagram
- 14. Parts List
- 15. Parts List for Carbon Resistors
BLOCK DIAGRAM
Rch SATELLITE SPEAKER
VOLUME
JK4
IL
IR
INPUT 1
JK3
INPUT 2
PWS
OL
+12
–12
JK5
RSP–
1
2
G
3
4
5
OR
TO RIGHT
E
SPEAKER
6
7
8
RSP+
POWER
SW2
VOLTAGE
SELECTOR
220V–240V
110V–120V
R model only
YST-MS50
+12
5
7
IC3
VR1
(NJM4556AL)
3
1
Q2
Q1
–12
PWS
+12
+12
E
TO
SUB Wo.
SW1
JK2
(AUTO POWER)
TO LEFT
SPEAKER
Mute
Q3
EQ Amp
+12
–12
IC1,2
IC1
(UPC4570HA)
4
2
H. P. F
12dB/oct
+12
–12
IC1
6
1
H. P. F
12dB/oct
VR2
+12
–12
IC2
7
4
8
BASS
–6dB/oct
POWER
TRANSFORMER
F1
Rectifier
D2
~
F2
~
YST-MS55D
JK1
(HEADPHONE)
OL
OR
–
TWEETER
RSP–
+
–12
1
2
G
3
5
+
4
6
7
8
MIDRENGE
–
RSP+
+B
5
PJ1
LSP+
8
RSP+
18
9
PWS1
14
Power Amp.
+12
IC6
(STK408-040E)
1
SLI
12
+12
SRI
16
20
+12
–12
IC2
2
SWI
17
3
–12dB/oct
–B
YST-MS55D
+B
(MC24C02-BN6)
Regulator
Regulator
Q201
+3.3V
7
IC2
+B
+
IN
OUT
+12
GND
JK202
–
IN
OUT
–12
GND
2
IC5
USB
3
INPUT
–B
18
Lch SATELLITE SPEAKER
–
+
PJ2
+
TO
SUB Wo.
–
A. N. I.C
IC7
4
8
–12
SP+
2
7
Q8
IC8
7
2
SP–
–12
IC7,8
8
4
(UPC4570HA)
Q6
Q7
+12
–12
Q4
Q5
EEPROM
USB D/A Converter
IC202
IC201
(UDA1321PS)
JK201
5
31
24
WP
SDA
SDA
VOUTL
6
30
21
OUTPUT
SCL
SCL
VOUTR
TO RIGHT
V
DD
V
SS
SPEAKER
L202
14
XTAL1
2
7
6
D–
3
6
7
D+
15
XTAL2
XL201
48MHz
USB IN USE ONLY
YST-MS50/YST-MS55D
TWEETER
MIDRENGE
SUBWOOFER
19