Yamaha R-S300 Service Manual page 59

A B C
MAIN
1
Destination Part List
sXX LOC UC R
s101 TE101 WU98700 WU98700
MST-224VD-03 MST-224VD-03
s102 TE102 WU98690 WU98690
2 MST-224VD-02 MST-224VD-02
s103 C153 X X
C154
C156
C157
C158
C159
s104 C150 WJ61140 WJ61100
C151 0.1/100 (J) 0.047/100
s120 C115 UR27833 UR27833
330/63 330/63
s121 C124 UR26747 UR26747
C127 47/50 47/50
s122 C133 UR81810 UR81810
100/6.3 100/6.3
s123 C155 X X
s124 C167 US163100 US163100
1000P/50 1000P/50
3
4
0
0
0
W105
Page 57 J8
to OPERATION (6)_CB706
5
37.7
6
37.1
0.7
0.7 0.7
0 0
-44.8 -45.6
7
OUT L
CB101
0
0
0
0
8
Page 57 E5
to OPERATION (2)_W803
-44.8 -45.6
0 0
0.7 0.7
9
0.7
37.2
37.8
10
D E F
IC101: LM61CIZ
Temperature sensor
A G L
WU98700 WU98720 WU98720
MST-224VD-03 MST-224VD-03 MST-224VD-03
WU98690 WU98710 WU98710
MST-224VD-02 MST-224VD-02 MST-224VD-02
WN16530 WJ61020 WN16530
0.01/100 0.01/100 0.01/100
WJ61100 WJ61080 WJ61100
0.047/100 0.033/100 0.047/100
UR27833 UR07847 UR27833
330/63 470/63 330/63
UR26747 UR34810 UR26747
47/50 100/25 47/50
UR81810 UR03810 UR81810
100/6.3 100/16 100/6.3
X WJ60890 X
1000P/100
US163100 X US163100
1000P/50 1000P/50
46.2
46.2
37.1
1.2
0.6
1.2
1.2
-0.3
-1.0
-1.0
-0.4
-1.0
-1.0
-46.2
-44.8
-45.4
-45.4
-44.8 -46.2
-1.0
-1.0
-0.4
-1.0 -1.1
-0.3
1.1
1.1
0.6
1.1
46.2
37.8
46.2
Note) Those parts marked with "#" are not included in the P.C.B. ass'y.
G H
Notes)
Safety measures
IC102: NJM4580E
Dual operational amplifier
V+
8
2, 6 1, 7 OUTPUT
–INPUT
+INPUT
3, 5
V–
4
MAIN (3)
5 k-ohms
46.2
46.1
0
46.2
0.6
#
45.9
0
0
0
0
0 0
-0.4
#
0 0
-46.2
0 0
-46.2
0 0
-0.4
#
0
0
0
0
45.9
0.6
#
46.2
MAIN (1)
5.0
0
1.0
MAIN (2)
I J K
Page 58
to OPERATION (13)_CB26
26.5 26.5 29.4
0.3 0.3 29.4
0.3 0.3 29.4
5.0 5.0 0
0 0 0
10 W
5 k-ohms
10 W
-15.5
SUBWOOFER OUT
0
0 0
0
5.0
1.0
0
15.5 -15.5
0 0
OUT L
0 5.0 1.0
W102 W104
Page 55 L4 Page 57 F4
to FUNCTION (1)_CB506 to OPERATION (2)_CB805
L M N
R-S300
G2
W103
-26.2 0.2
29.4 -0.4
AC67.3
CB105
to POWER TRANSFORMER
46.2
(34.5)
AC50.6
0
0
-46.2
(-34.5)
LOW HIGH
IMPEDANCE
SELECTOR
A
B
SPEAKERS
A
B
POWER
ON/OFF
MANAGEMENT
0 0 OUT SUBWOOFER
-15.5
0 0
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
59