Yamaha AX-497, Руководство по обслуживанию

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A B C D E F G H
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2
3
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6
I J K
7
8
AX-497
21
■
SCHEMATIC DIAGRAM (FUNCTION)
* All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
* Components having special characteristics are marked
Z
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10MΩの電圧計で測定したものです。
*
Z
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ございます。
IC302, 454–457, 501, 502, 531, 532:
NJM2068MD-TE
Dual OP-Amp
– +
OUT
1
–IN
1
–V
CC
+V
CC
OUT
2
1
2
3
4 5
+IN
1
–IN
2
+IN
2
– +
6
7
8
IC451: NJU7313AM
Analog Function Switch
13 NC 18 NC
2
3
4
5
6
7
8
9
10
11
12
14
30
1
29
28
27
26
25
24
23
22
21
20
19
17
15
CONTROL
LEVEL
SHIFTER
LA
TCH
LEVEL
SHIFTER
LA
TCH
L1
L2
L3
L4
L-COM1
L5
L6
L-COM2
L7
L8
L-COM3
ST
VDD
VEE
R1
R2
R3
R4
R-COM1
R5
R6
R-COM2
R7
R8
R-COM3
DATA
CK
VSS
16
IC452: NJU7312AM
Analog Function Switch
2
3
4
5
6
7
8
9
10
11
12
14
30
1
29
28
27
25
24
23
22
21
20
19
17
15
CONTROL
LEVEL
SHIFTER
LA
TCH
LEVEL
SHIFTER
LA
TCH
L1
L2
L3
L4
L-COM1
L5
L6
L-COM2
L7
L8
L-COM3
ST
VDD
VEE
13 NC
R1
R2
R3
R4
R-COM1
R5
R6
R-COM2
R7
R8
R-COM3
DATA
CK
VSS
18 NC
16
26
CD/DVD DIRECT AMP ON
CD/DVD DIRECT AMP OFF
PURE DIRECT ON
PURE DIRECT OFF
TO MAIN (1) W2 Page 22 B-6
TO MAIN (2) W151
Page 22 I-1
TO MAIN (3) CB201
Page 22 A-4
TO MAIN (1) CB1
Page 22 B-3
TO MAIN (5) CB221
Page 22 A-1
TO MAIN (6) CB226
Page 22 A-2
0
0
0
0
-16.9
0
0
15.6
0
0 0
0
0
0
14.0
-14.1
0
0 0
0
0
0
0
0
0
15.6
15.6
-15.7
-15.7
0.1
0.1
0.1
0.1 5.0
5.0
0
0
0
0
0.6
0.8
0.8 0.6
0.4
1.4
1.4
15.2
15.2
0 0 0 0 0
0
0
0 0 0 0
0 0 0
0
0
0 0
0 0
0
0
0 0 0 0
0 0 0 0 0 0 0
0
0
0
0
0
0
0
0
0
0
0.7
0.7
0
0
0
14.0
-14.1
0
0 0
0
0
0
14.0
-14.1
0
0 0
0
0
0
14.0
-14.1
0
0
0.1
0
0
0.1
-15.7
15.6
14.2
14.2 14.2
0 0
0 0
14.2
15.6
15.6
2.1 5.0
5.0
5.0
5.0
10.4
12.1
12.1
11.4
7.4 6.7
6.7
0
4.9
4.9
6.3
6.2
6.3
5.6
5.6
4.8
4.8
5.0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.1
0.1
0.2
4.3
4.9
4.9
5.0 5.0
-7.1
14.7
14.7
-14.8
-14.8
15.6
0
0
-16.7
0
1.7
0.7
0
2.5 1.0 1.0 5.0 5.0 5.0
5.0 5.0 5.0 5.0 1.7 1.1
5.0
4.9 4.7 2.2 2.4
4.9
4.2 0 0 0 0 0 0
0 0
0
0 0
5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 0.2 4.9 4.9 1.7
2.1 5.0
2.1 5.0
2.1 5.0
2.1 5.0
5.0 4.9
2.1 4.9
2.1 0.2
1
2
CH1
2
CH2
4.7K
4.7K
2.4K
2.4K
1K
1K
510
510
270
270
IC421: LB1641
Motor Driver
2 3
P1
5 IN 1
1 GND
4
VZ
6
IN 2
OUT
1
8
VCC 2
10
OUT
2
9
P2
INPUT LOGIC
PRE DRIVER
7
VCC 1
Point
q
(Pin 20 of IC301)
Point
w
CH 1 : Emitter of Q309
CH 2 : Collector of Q304
↑
AC POWER ON
(Connect the power cable)
↑
AC POWER OFF
(Disconnect the power cable)
↑
AC POWER ON
(Connect the power cable)
w w w . x i a o y u 1 6 3 . c o m
Q Q
3 7 6 3 1 5 1 5 0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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