Yamaha A-S500, Руководство по обслуживанию

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A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
57
MAIN 1/2
A-S500/A-S300
★
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.
W104
CB104
CB15
CB15
CB8
CB101
CB108
W101 W105
W103
W102
CB107
CB106
IC103
IC103
IC102
IC101
OUT L
SUBWOOFER OUT
0
0
0 0 0
38.2
-38.2
21.9
-21.8
2.9
0
19.5 0
12.7
11.1
-38.2
0
38.2
0 0
0
0
0
5.0
0
0
5.0
20.2
19.5
20.9
12.0
-21.8
20.2
12.0
12.6
11.3
11.3
-21.8
11.1
-21.8
-21.8
-21.8
20.9
12.0
12.0
53.3
(41.8)
(-41.7)
-53.3
0
0
0
0
AC77.9
AC61.2
1.0
5.0 5.0
1.0
0
0
0
0 0 0 0
1.6 5.0 5.0 5.0 5.0 1.0 1.0 0 0 0
-15.2 -15.2
15.5 -15.4
-15.2
0
0
0
0 0
0
-15.2
15.5
0 0
-15.2
1.0
0
5.0
0
1.0
5.0
0
53.4
52.8
52.8
52.2
0.7
52.2
52.2
-1.0
52.8
1.2
0
0
0
1.2
1.2
53.4
53.4
53.4
53.4
53.1
53.1
0.6
-53.3
0
0
0
0
0
-0.5
-53.3
-0.5
-1.0
-0.4
1.0
-1.0
-51.5
-1.0
-0.7
0
-0.7
-52.2
-52.2
-52.2
-52.1
-52.8
-52.1
-52.8
-52.2
-52.1
0
-52.1
0
0
0
0
-52.1
-51.6
-52.1
0.6
-51.5
-52.1
1.2
-52.1
-1.0
0
0
0
-1.0
-1.0
-53.3
-53.3
-0.5
53.4
0
0
0
0
53.1
0
0.6
53.4
0.6
1.2
-0.4
1.2
-1.0
52.3
52.3
52.8
53.4
1.2
0.7
0
0.7
-52.2
0.7
52.2
52.8
-52.2
-52.2
-52.1
-52.1
-52.8
-52.2
-52.8
-52.1
0
52.8
-0.5
IC101, 102 : LM61CIZ
Temperature sensor
V+
–INPUT
+INPUT
V–
OUTPUT
IC103 : NJM4580E
Dual operational amplifier
8
2, 6
3, 5
1, 7
4
SPEAKERS
A
A
B
B
SUBWOOFER
OUT
POWER
MANAGEMENT
IMPEDANCE
SELECTOR
MAIN (1)
MAIN (4)
MAIN (3) MAIN (2)
LPF
Note) Those parts marked with “#” are not included in the P.C.B. ass’y.
#
#
#
#
to POWER TRANSFORMER
to FUNCTION (1)_CB506
Page 53 L4
to MAIN (6)_CB13
Page 58 K3
to OPERATION (2)_W804
Page 55 F5
to OPERATION (2)_W803
Page 55 F5
Notes)
Safety measures
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t/PUFUIBUUIFDBQBDJUPSTJOEJDBUFECFMPXBSFEBOHFSPVTFWFOBGUFSUIFQPXFSJTUVSOFEPGGCFDBVTFBOFMFDUSJDDIBSHFSFNBJOTBOEBIJHIWPMUBHFDPOUJOVFTUPFYJTUUIFSF
#FGPSFTUBSUJOHBOZSFQBJSXPSLDPOOFDUBEJTDIBSHJOHSFTJTUPS LPINT8UPUIFUFSNJOBMTPGFBDIDBQBDJUPSJOEJDBUFECFMPXUPEJTDIBSHFFMFDUSJDJUZ5IFUJNFSFRVJSFE
GPSEJTDIBSHJOHJTBCPVUTFDPOETQFSFBDI
$BOE$PO."*/ 1$#
5 k-ohms
10 W
5 k-ohms
10 W