Printed Circuit Board - Yamaha YST-MS50 Service Manual

A B
YST-MS50/YST-MS55D
PRINTED CIRCUIT BOARD (Foil side)
1
•
Subwoofer
Semiconductor Location
Ref. No. Location
D2 H4
D3 B2
D4 E3
D5
E3
D6 D4
D7 D4
D8 D4
D201 B5
D202 E5
IC1 B3
IC2 D3
P. C. B. MAIN (3)
2
IC4 D5
IC5 D5
IC6 E4
IC7
D4
IC8
D3
IC201 B5
IC202 B5
Q3 B2
Q4 E3
Q5 E3
Q6 E3
Q7 E3
Q8 E3
Q201 B5
3
YST-MS55D
P. C. B. MAIN (9)
4
5
E
+B
20
6
C
P. C. B. MAIN (6)
LSP+
E
SWI
SRI
SLI
RSP+
PWS1
E
E
–12
+12
LSP+
E
E
+B
5 8
4 1
M24C02-BN6
W201
D E
YST-MS50 YST-MS55D
SUBWOOFER
VIN
VOUT
+ –
E
RE WH
P. C. B. MAIN (1)
UPC4570HA
9 1
9 1
UPC4570HA
9 1
UPC4570HA
RE BL WH
21
F G
R model only
P. C. B. MAIN (7)
WH
BE
J,U,C,A,B,G
POWER
only
TRANSFORMER
R only
RE
BL
WH
P. C. B. MAIN (2)
H