Yamaha A-S301, Service Manual

Page: 66 / 91

A
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N M L K J I H G F E D C B
66
A-S501/A-S301
OUT L
SUBWOOFER OUT
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
1
2
1
4
P
P P
Q
1
2
1
C
n
o
_
u
s
e
Q
1
2
4
C
A
1
6
9
4
/
C
4
4
6
7
Q
1
2
2
C
n
o
_
u
s
e
Q
1
2
3
A
A
1
6
9
4
/
C
4
4
6
7
Q
1
2
3
C
A
1
6
9
4
/
C
4
4
6
7
Q
1
2
1
A
n
o
_
u
s
e
Q
1
2
4
A
A
1
6
9
4
/
C
4
4
6
7
Q
1
2
2
A
n
o
_
u
s
e
C141
100P(SL)
R153
1P4.7
JY113
JY115
C
1
2
7
1
0
0
P
/
6
3
0
R
2
1
5
1
P
3
3
0
C
1
1
1
1
0
0
0
P
/
1
0
0
PN107
JY107
R151
no_use
R
1
7
0
4
7
K
R
1
7
4
1
0
K
C
1
2
2
n
o
_
u
s
e
Q137 K
T
A
1
6
5
9
A
R
1
3
0
1
P
1
0
0
SL13B-022ASC40
SW101
R
2
3
0
1
P
1
.
0
C144
0.1
R154
1P4.7
RY102
DH24D2-OT(M)
RY 01
DH24D2-OT(M)
4 2
L102
0.95UH
R227
5.6K
IC103
N
J
M
4
5
8
0
E
(
T
E
2
)
5
6
7
D
1
1
1
S
5
V
B
6
0
-
5
0
0
1
L
2
0
JY111 JY102
PN104
Q129 K
T
A
1
6
5
9
A
C119
s25
R
1
6
9
1
0
K
C114
15P/630
JY110
C133
s34
R
2
1
0
2
.
4
K
R166
10K
IC103
NJM4580E(TE2)
3
2
1
R163
4.7K
C
1
0
8
4
7
P
/
6
3
0
R175
1P4.7
R
2
2
9
2
.
2
JY106
no_use
PN103
no_use
R
1
2
9
1
P
1
0
0
R149
1P4.7
RY101
DH24D2-OT(M)
PN105
3 3 1 Q
no_use
C
1
4
7
s
2
9
R200
1P10
C105
220P/630
R
1
7
3
4
7
K
R180
33K
R202
no_use
R218
no_use
R157
no_use
1
2
3
PN109
R
1
3
2
1
/
2
P
2
7
0
R190
no_use
R
1
9
3
2
.
4
K
R177
56K
C
1
3
8
s
3
3
G101
JY119
IC 03
+ V
8
R
1
6
8
1
0
K
C
1
4
6
s
2
9
C
1
0
9
1
0
0
P
/
6
3
0
R158
no_use
1
2
3
PN106
R167
47K
R
1
3
8
1
/
2
P
2
.
7
K
R176
1P4.7
R181
33K
R
Y
1
0
1
D
H
2
4
D
2
-
O
T
(
M
)
5
6
R189
12K
C103
s23
R
1
6
0
3
P
0
.
2
2
X
2
R
1
9
4
2
.
4
K
R
2
1
3
n
o
_
u
s
e
R226
4.7K
Q128
KRC104S-RTK/P
IC102
LM61CIZ
VCC
GND
OUT
R
1
8
8
1
P
3
3
0
R
2
1
1
2
.
4
K
R203
470
C
1
6
2
0
.
1
/
1
6
CB106
PHL
R
1
6
5
8
2
K
C
1
3
4
1
2
0
0
0
/
7
1
C
1
2
8
1
0
0
P
/
6
3
0
Q136
KRC104S-RTK/P
R150
1P4.7
W103
3P 180MM B&C
JY108
R
1
6
4
8
2
K
C118
s25
R196
no_use
R224
2.2
SW101
SL13B-022ASC40
C
1
0
7
4
7
P
/
6
3
0
C
1
2
3
n
o
_
u
s
e
R
1
3
3
1
/
2
P
2
7
0
CB107
PHL
R204
10K
R
1
8
6
2
.
4
K
L101
0.95UH
R156
no_use
1 3
R179
100K
R
1
4
2
1
/
2
P
1
.
0
K
C
1
3
0
4
.
7
/
5
0
R199
1P10
R148
no_use
JY104
no_use
C
1
3
5
1
2
0
0
0
/
7
1
C
1
1
3
s
3
1
R159
no_use
1
2
3
R
1
6
1
3
P
0
.
2
2
X
2
R
2
3
1
1
P
1
.
0
Q135 D
2
7
0
4
(
K
)
C
1
1
2
1
0
0
0
P
/
1
0
0
Q134
no use
C
1
0
6
1
0
0
P
/
6
3
0
C
1
2
4
s
3
2
R
1
4
7
1
P
2
2
0
Q126
KRC104S-RTK/P
IC101
LM61CIZ
VCC
GND
OUT
R
1
4
1
1
/
2
P
1
.
0
K
1P47
R136
PN108
C145
100/16
1 0 1 B C
I H P
R197
no_use
R
2
1
4
8
2
K
C
1
6
4
0
.
3
9
R225
4.7K
R
2
0
8
1
0
K
Q127 K
T
A
1
6
5
9
A
R
1
8
5
2
.
4
K
L103
no_use
JY114
PJ101
no_use
6
3
4
5
7
2
1
W102
3P 180MM B&C
R192
470
W
1
0
1
n
o
_
u
s
e
R198
10K
C101
no_use
R155
no_use
R
Y
1
0
2
D
H
2
4
D
2
-
O
T
(
M
)
C115
15P/630
R207
no_use
Q132 D
2
7
0
4
(
K
)
R152
no_use
1P47
R137
C
1
2
5
s
3
2
C102
no_use
R162
4.7K
JY112
CB104
VHI
JY103
R201
no_use
W
1
0
4
S
A
N
-
P
H
IC 03
V-
4
1
P
1
0
0
R
1
3
1
R
2
1
2
n
o
_
u
s
e
R187
12K
TE102
s8
4
RED
2
BLACK
3
RED
1
BLCAK
5
G
R191
no_use
C
1
5
4
n
o
u
s
e
R178
47K
C
1
1
0
s
3
1
Q130
no_use
PN102
JY116
C
1
2
9
1
0
0
P
/
6
3
0
1
P
5
6
0
R
1
1
0
C
1
6
3
0
.
1
/
1
6
R
1
9
5
1
P
3
3
0
R
1
4
6
1
P
2
2
0
C
1
2
6
1
0
0
P
/
6
3
0
Q131
no_use
RY102
DH24D2-OT(M)
R206
no_use
L104
no_use
1
P
1
0
0
R
1
2
8
C104
s23
JY109
TE101
s9
2
RED
4
BLACK
1
RED
3
BLCAK
5
G
R
1
4
3
1
/
2
P
2
.
7
K
R
Y
1
0
4
n
o
_
u
s
e
R
Y
1
0
5
n
o
_
u
s
e
R
Y
1
0
3
9
8
1
-
2
A
-
2
4
D
S
-
S
P
7
RY103
981-2A-24DS-SP7
RY105
no_use
RY104
no_use
1 1
4 5
RY104
no_use 2
3
RY105
no_use
RY103
981-2A-24DS-SP7
SW102
S
S
S
F
1
1
0
5
0
0
3
2
1
5
4
T101
R221
1.0
R222
1.0
R145
4.7
R144
4.7
R
1
7
1
1
0
R
1
7
2
1
0
R
2
2
8
3
3
Q120
K
T
B
6
3
1
K
-
Y
-
U
/
P
H
Q138
K
T
B
6
3
1
K
-
Y
-
U
/
P
H
Q119
K
T
D
6
0
0
K
-
Y
-
U
/
P
H
Q139
K
T
D
6
0
0
K
-
Y
-
U
/
P
H
Q109
A
1
5
1
4
K
(
R
/
S
)
Q101
A
1
5
1
4
K
(
R
/
S
)
Q102
A
1
5
1
4
K
(
R
/
S
)
Q110
A
1
5
1
4
K
(
R
/
S
)
Q
1
0
7
2
N
5
4
0
1
S
-
R
T
K
/
P
Q
1
0
8
2
N
5
4
0
1
S
-
R
T
K
/
P
Q103
K
T
C
3
8
7
5
S
-
Y
,
G
R
-
R
Q105
K
T
C
3
8
7
5
S
-
Y
G
R
-
R
Q106
K
T
C
3
8
7
5
S
-
Y
,
G
R
-
R
Q104
K
T
C
3
8
7
5
S
-
Y
,
G
R
-
R
Q111
KTA1504S-Y,GR-R
Q112
KTA1504S-Y,GR-R
Q
1
1
4
K
T
C
3
2
0
6
Y
-
A
T
Q
1
1
5
K
T
C
3
2
0
6
Y
-
A
T
Q
1
1
3
K
T
A
1
0
2
4
Y
-
A
T
Q
1
1
6
K
T
A
1
0
2
4
Y
-
A
T
Q141
2
N
5
5
5
1
S
-
R
T
K
/
P
Q125
2
N
5
5
5
1
S
-
R
T
K
/
P
Q140
2
N
5
4
0
1
S
-
R
T
K
/
P
1SS355VM
D101
1
S
S
3
5
5
V
M
D
1
0
3
1
S
S
3
5
5
V
M
D
1
0
4
1
S
S
3
5
5
V
M
D
1
0
6
1SS355VM
D102
1
S
S
3
5
5
V
M
D
1
0
5
D
1
2
1
B
A
V
1
0
3
D
1
1
0
B
A
V
1
0
3
D
1
2
0
B
A
V
1
0
3
D
1
0
9
B
A
V
1
0
3
D
1
1
3
1
S
S
3
5
5
V
M
D
1
1
7
1
S
S
3
5
5
V
M
D
1
1
9
1
S
S
3
5
5
V
M
1
P
4
7
K
R
1
0
3
1
P
4
7
K
R
1
0
4
1P100
R102
1P100
R101
1P33K
R106
1P33K
R107
1
P
5
6
0
R
1
1
1
1P2.2
R105
1
P
2
2
0
R
1
1
3
1
P
2
2
0
R
1
0
9
1
P
2
2
0
R
1
1
2
1
P
2
2
0
R
1
0
8
1
P
1
0
0
K
R
1
2
4
1
P
1
.
2
K
R
1
1
7
1
P
1
.
2
K
R
1
1
4
1P47K
R120
1
P
4
7
0
R
1
1
5
1
P
4
7
0
R
1
1
6
1P47K
R121
1
P
1
0
K
R
1
2
3
1
P
1
0
K
R
1
2
2
R223
1P220
R216
no_use
R217
no_use
R220
no_use
R219
no_use
R
1
8
3
4
.
7
s
2
R
1
8
4
4
.
7
s
2
R118
s16
R119
s16
Q117
C
5
3
9
8
-
T
1
1
2
-
R
Q118
C
5
3
9
8
-
T
1
1
2
-
R
D
1
0
8
T
F
Z
G
T
R
5
.
6
B
D
1
0
7
T
F
Z
G
T
R
5
.
6
B
D116
1N4003S
1N4003S
D115
D
1
1
2
U
D
Z
V
8
.
2
B
D
1
1
4
U
D
Z
V
8
.
2
B
D
1
1
8
U
D
Z
V
8
.
2
B
1
P
1
0
0
K
R
1
2
5
ST102
ST103
R
2
0
5
1
8
0
K
R
2
0
9
1
8
0
K
R
1
4
0
1
/
2
P
1
.
0
K
R
1
3
9
1
/
2
P
1
.
0
K
C
B
9
s
4
0
C
B
8
s
4
0
S
W
1
S
L
1
4
s
3
9
6 5 4
3 2 1
CB10
B4P7S-VH
s42
F
4
4
A
2
5
0
V
s
4
1
C
1
3
2
s
1
5
C
1
3
7
s
3
3
C
1
5
8
n
o
_
u
s
e
C
1
5
0
n
o
u
s
e
C
1
5
7
n
o
_
u
s
e
C
1
4
9
n
o
_
u
s
e
C
1
4
3
s
1
C
1
5
5
s
1
C
1
4
8
s
1
C
1
5
6
s
1
C
1
5
9
s
1
C
1
5
2
s
1
C
1
6
0
s
1
C153
no_use
C
1
3
1
s
1
5
C
1
4
0
s
2
2
C
1
4
2
s
1
MSP-241V1-01NI
PJ102
G
JY101
CB105
s43
R182
62K
C
B
1
0
8
P
H
I
C161
0.1/100
C
1
5
1
0
.
1
/
1
0
0
C
B
1
0
9
P
H
I
C
1
3
6
s
2
1
C
1
3
9
s
2
1
E
H L
L
E
R
T
O
I
N
P
U
T
(
2
)
MAIN(1)
T
R
A
N
S
F
O
R
M
E
R
STAR EARTH V599580
ACH
ACL
ACL
ACH
E
-
V
P
_
U
N
R
E
G
E
+
V
P
_
U
N
R
E
G
+
7
U
N
R
E
G
-
7
U
N
R
E
G
P
R
V
H
P
L
E H
P
R
P
R
E
O
U
T
_
L
A
G
N
D
M
A
I
N
I
N
_
L
M
A
I
N
I
N
R
A
G
N
D
P
R
E
O
U
T
_
R
+
7
V
-
7
V
M
G
+
5
S
P
R
E
M
T
S
W
M
T
H
P
R
Y
S
P
A
R
Y
S
P
B
R
Y
P
R
D
P
R
I
T
H
M1
T
H
M2
P
O
W
_
M
G
T
MAININ_L
MAININ_R
PREOUT_L
PREOUT_R
SW PREOUT
POW_MGT ON
POW_MGT OFF
HI
LOW
S
i
n
g
l
e
T
r
S
i
n
g
l
e
T
r
SPLA
SPLB
SPLG
SPLG
SPRG
SPRG
SPRA
SPRB
Final Tr pair VP76860
Heat sheet VV84930
Dumper VP92250
Screw VK17320
SPARY
SPBRY
L c h
SPARY
SPBRY
R c h
P
R
E
O
U
T
_
L
A
G
N
D
+
7
V
-
7
V
A
G
N
D
P
R
E
O
U
T
_
R
30mm 40mm 50mm 60mm 70mm
1mA
0.5mA
6mA
0.11V
60V
30mW
1mA
60V
60mW
0.5mA
0.6mV
1.0mA
0.7V
7mA
M A I N
T H M L
T H M R
Orange/115V
220-230V 110-120V
Gray/0V
Blue/115V
Red/115V
Yellow/0V
Purple/0V
P _ S E L
Destination Part List
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| sxx | LOCATION | J | U | R | TA | B | G | L |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s1 | C142 | X | X | X | ZD52000 | ZD52000 | ZD52000 | ZD52000 |
| | C143 | | | | 0.01/100 | 0.01/100 | 0.01/100 | 0.01/100 |
| | C148 | | | | | | | |
| | C152 | | | | | | | |
| | C155 | | | | | | | |
| | C156 | | | | | | | |
| | C159 | | | | | | | |
| | C160 | | | | | | | |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s2 | R183 | X | X | X | WW86170 | WW86170 | WW86170 | WW86170 |
| | R184 | | | | 4.7 | 4.7 | 4.7 | 4.7 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s8 | TE102 | WU98740 | WU 98740 | WU98740 | WU98740 | WU98760 | WU98760 | WU98760 |
| | | MST-224VD-03-GI | MST-22 4VD-03-GI | MST-224VD-03-GI | MST-224VD-03-GI | MST -224VD-03-GI | MST-224VD-03-GI | MST-224VD-03-GI |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s9 | TE101 | WU98730 | WU 98730 | WU98730 | WU98730 | WU98750 | WU98750 | WU98750 |
| | | MST-224VD-02-GI | MST-22 4VD-02-GI | MST-224VD-02-GI | MST-224VD-02-GI | MST -224VD-02-GI | MST-224VD-02-GI | MST-224VD-02-GI |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s15 | C131 | WQ20970 | ZD 52050 | ZD52050 | ZD52050 | WQ20970 | WQ20970 | ZD52050 |
| | C132 | 0.027/100 | 0.0 27/100 | 0.027/100 | 0.027/100 | 0.027/100 | 0.027/100 | 0.027/100 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s16 | R118 | WN46220 | V8 07260 | V807260 | V807260 | WN46220 | WN46220 | V807260 |
| | R119 | 1P33K | 1 P33K | 1P33K | 1P33K | 1P33K | 1P33K | 1P33K |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s21 | C136 | WZ36390 | ZH 99690 | ZH99690 | ZH99690 | WW31470 | WW31470 | ZH99690 |
| | C139 | 0.068/100 | 0. 1/100 | 0.1/100 | 0.1/100 | 0.033/100 | 0.033/100 | 0.1/100 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s22 | C140 | WE10290 | ZD 52000 | ZD52000 | ZD52000 | WE10290 | WE10290 | ZD52000 |
| | | 0.01/100 | 0.0 1/100 | 0.01/100 | 0.01/100 | 0.01/100 | 0.01/100 | 0.01/100 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s23 | C103 | WK04180 | UR 23710 | UR23710 | UR23710 | WM09810 | WM09810 | UR23710 |
| | C104 | 10/16 | 1 0/16 | 10/16 | 10/16 | 4.7/50 | 4.7/50 | 10/16 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s25 | C118 | UR07847 | UR 27847 | UR27847 | UR27847 | UR07847 | UR07847 | UR27847 |
| | C119 | 470/63 | 47 0/63 | 470/63 | 470/63 | 470/63 | 470/63 | 470/63 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s29 | C146 | UU29733 | UR 26710 | UR26710 | UR26710 | UU29733 | UU29733 | UR26710 |
| | C147 | 33/100 | 1 0/50 | 10/50 | 10/50 | 33/100 | 33/100 | 10/50 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s31 | C110 | UU23810 | UR 26810 | UR26810 | UR26810 | UU23810 | UU23810 | UR26810 |
| | C113 | 100/16 | 10 0/50 | 100/50 | 100/50 | 100/16 | 100/16 | 100/50 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s32 | C124 | UR34810 | UR 23747 | UR23747 | UR23747 | UR34810 | UR34810 | UR23747 |
| | C125 | 100/25 | 4 7/16 | 47/16 | 47/16 | 100/25 | 100/25 | 47/16 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s33 | C137 | UR03810 | UR 23747 | UR23747 | UR23747 | UR03810 | UR03810 | UR23747 |
| | C138 | 100/16 | 4 7/16 | 47/16 | 47/16 | 100/16 | 100/16 | 47/16 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s34 | C133 | UR03810 | UR 21810 | UR21810 | UR21810 | UR03810 | UR03810 | UR21810 |
| | | 100/16 | 10 0/6.3 | 100/6.3 | 100/6.3 | 100/16 | 100/16 | 100/6.3 |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s39 | SW1 | X | X | WV38290 | X | X | X | X |
| | | | | SL14 | | | | |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s40 | CB8 | X | X | WN10300 | X | X | X | X |
| | CB9 | | | TP00351-31 | | | | |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s41 | F4 | X | X | VV07180 | X | X | X | X |
| | | | | 4A250V | | | | |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s42 | CB10 | X | X | V937790 | X | X | X | X |
| | | | | B4P7S-VH | | | | |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
| s43 | CB105 | VL84480 | X | X | X | VL84480 | VL84480 | X |
| | | XHI | | | | XHI | XHI | |
+--------+---------------+-----------------+------- ----------+-----------------+-----------------+---- -------------+-----------------+-----------------+
H L
V+
–INPUT
+INPUT
V–
OUTPUT
IC103 : NJM4580E
Dual operational amplifier
8
2, 6
3, 5
1, 7
4
IC101, 102 : LM61CIZ
Temperature sensor
RESISTOR
REMARKS
NO MARK PARTS NAME
CARBON
CARBON
METAL
METAL
METAL
FIRE
CEMENT
SEMI FILM RESISTOR
FILM RESISTOR
OXIDE FILM RESISTOR
FILM RESISTOR
PLATE RESISTOR
PROOF CARBON FILM RESISTOR
MOLDED RESISTOR
VARIABLE RESISTOR
(P=5)
(P=10)
CHIP RESISTOR
N O T I C E
U.S.A
G
CANADA
STANDARD
L
CHINA
AUSTRALIA
SINGAPORE
KOREA
GENERAL
U
C
T
A
K
R
JAPAN
(model)
B BRITISH
J
SOUTH EUROPE E
V
TAIWAN
F RUSSIAN
P LATIN AMERICA
S BRAZIL
H THAI
REMARKS
CAPACITOR
PARTS NAME
NO
NO
MARK
MARK
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
POLYESTER FILM CAPACITOR
POLYSTYRENE FILM CAPACITOR
MICA CAPACITOR
POLYPROPYLENE
FILM CAPACITOR
SEMICONDUCTIVE CERAMIC CAPACITOR
P
TANTALUM CAPACITOR
TUBULAR
S
CAPACITOR CERAMIC
FILM SULFIDE POLYPHENYLENE
CAPACITOR
MAIN (1)
SPEAKERS
SUBWOOFER
OUT
POWER
MANAGEMENT
IMPEDANCE
SELECTOR
A
A
B
B
LPF
5 k-ohms
10 W
5 k-ohms
10 W
MAIN (3)
MAIN (5)
MAIN (4)
Page 62 F9
to FUNCTION (1)_W405
Page 62 L4
to FUNCTION (1)_W505
Page 67 J3
to MAIN (2)_CB13
Page 62 F10
to FUNCTION (2)_W402
Page 62 F10
to FUNCTION (2)_W401
to POWER
TRANSFORMER
to HEATSINK
L temperature
to HEATSINK
R temperature
Note: Those parts marked with “#” are not included in the P.C.B. ass’y.
44.8 -44.8 24.1 -24.3 2.9
40
40
33
33
0 0
22 9
0 0
24 6
24 7
7 7
15 1
23 6
23 6
22 9 15 0
15 8
3 7
0 0
0 0
0
4 9
0 0
0 0
7 0
7 0
1.5 0.0 0.9 0.9
-7.0 -7.0
0 0
0 0
0 0
0 05 0 0
54 1
53 7
0 5
0 5
0 5
0 0
0 0
0 0
0 0
0 0
55.9
56 0
0.0
56 1
0 5
1 08
1 08
55 1
55 2
54 7
54 1
1 08
0 43
0.5
0.0
0 0
-55.9
54 9
54 7 54 17 54 8
54 3
-54.3
0.63
0.05
MAIN 1/2
Details of colored lines
Red / full line: Power supply (+)
Red / dashed line: Power supply ( ‑ )
Orange: S ignal detect
Y ellow: Clock
G reen: Protection detect
B rown: Reset signal
B lue: Panel key input
★ All voltages are measured with a 10M Ω /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.
● 電圧は、内部抵抗
10M
Ωの電圧計で測定したものです。
● ⚠印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがあります。
A-S501
Safety measures
• S ome internal parts in this product contain high voltages and are dangerous. B e
sure to take safety measures during servicing, such as wearing insulating gloves.
• Note that the capacitors indicated below are dangerous even after the power is
turned off because an electric charge remains and a high voltage continues to
exist there.
B efore starting any repair work, connect a discharging resistor ( 5 k ‑ ohms / 10 W)
to the terminals of each capacitor indicated below to discharge electricity.
The time required for discharging is about
3 0 seconds per each.
C1 3 4, C1 35 on M A IN (1) P.C. B .
安全対策
・ この製品の内部には高電圧部分があり危険です。修理の際は、絶縁性の手袋を使
用するなどの安全対策を行ってください。
・ 下記のコンデンサには電源を OFF にした後も電荷が残り、高電圧が維持されて
おり危険です。修理作業前に放電用抵抗（ 5 k Ω / 10 W ）を下記の各コンデンサ
の端子間に接続して放電してください。放電所用時間は各々約 3 0 秒間です。
M A IN （ 1 ） P.C. B . の C1 3 4 、 C1 35