Printed Circuit Boards - Yamaha A-S3000 Service Manual

A B
A-S3000

■ PRINTED CIRCUIT BOARDS

1
INPUT (1)
(Side A)
PRE OUT/
LINE 2
MAIN IN
REC/PS
2
L R L
U, A, L, V, J models
3
1
8
4
5
4
5
6
7
46
C D
LINE 1 BAL 2
R L R L
JK904
1
2
3
FUNCTION (2)
(W713)
• Semiconductor Location
Ref no. Location Ref no. Location Ref no. Location
D903 F4 D923 B4 D937
D904 F4 D924 B4 D938
D905 E4 D929 D5 D939
D930 D5 D940
D908 G4
D909 G4 D931 D5 D949
D910 D4 D932 E5 D950
D912 D4 D933 E5 D951
D914 D4 D934 E5 D952
D915 B4 D935 G5 IC901
D916 B4 D936 G5 Q901
E F G
+HOT GND
-COLD
BAL 1
R L R
JK903 JK902 JK901
1 1 1
2 2 2
3 3 3
W901
CB905
CB903 CB902
FUNCTION (2)
(W712)
FUNCTION (2)
FUNCTION (2)
(W711)
(W53)
Ref no. Location Ref no. Location Ref no. Location
G5 Q902 C3 Q916 E4 Q934 F4
F5 Q903 A3 Q917 G4 Q935 D4
F5 Q904 B3 Q918 F4 Q936 D4
F5 Q909 C4 Q927 D4 Q937 E4
H4 Q910 B4 Q928 D4 Q938 E4
H4 Q911 C4 Q929 E4 Q939 G4
G4 Q912 B4 Q930 E4 Q940 G4
E4 Q913 C4 Q931 G4 Q941 F4
B4 Q914 B4 Q932 G4 Q942 F4
B3 Q915 D4 Q933 F4 Q943 D5
H I
CD TUNER
L R L R
W903A
W903B
INPUT (2)
(CB802)
Ref no. Location
Q944 D5
Q945 E5
Q946 E5
Q947 G5
Q948 G5
Q949 F5
Q950 F5
Q951 H4
Q952 H4
J
U, A, L, V, J models
-12C
RY_MDIR
RY_LINE2
RY_LINE1
RY_TU
RY_CD
RY_SEL_BAL
RY_BALGAIN
RY_BAL1
RYB1_PLTY
RY_BAL2
RYB2_PLTY
RY_BAL_COLD
+5S
N_MT_REC
N_MT_PRE
MG
MG
MG
INPUT (3)
(CB909)