Yamaha AX-397 Schematic
■ BLOCK DIAGRAM
10dB
PHONO
CD/DVD
SP A
SP B
PHONES
TUNER
AUX
TAPE
IN
TAPE
OUT
MD
IN
MD
OUT
CD/DVD DIRECT AMP
INPUT
SELECTOR
PHONO EQ AMP
CD/DVD DIRECT AMP
MOTOR
DRIVER
ON
ON
OFF
OFF 31.8dB
M
Main VR
10dB
RYPS
LOUDNESS
BALANCE
TONE CONTROL
TAPE MONITOR
MAIN
MUTE
CD-D
MUTE
A
B
POWER AMP
RYSP
LB
15
–15
B
–B
LB
12S
+
+
+
+
+
+
IC502
IC501
IC452
Q451,452
SW301
SW302
SW581
SW4
T151
D15–18
D153–156
D20
D19
Q3
Q4
Q151
RY2
RY151
SW681
RY3
RY1
Q1,2
Q26
Q27
Q25
Q5—30
VR421
VR531–534
IC302
IC531,532
IC421
IC452
IC453
IC456
TAPE
CDD
POWER
–10dB
TAPE
MONITOR
INH
MAIN
MUTE
STANDBY
/ON
RYPS
(Power ON/OFF)
Remote Control
SERIAL DATA
(Input Select)
Input Select
Tape Monitor
Main VR
Protection
TAPE
CDD
RYSP
Microprocessor
SW621
U631
IC301
SW622
Q305
CD-D
MUTE
Q303
XL301
4MHz
19 20 11
6 7 31,32
37
13,14 5 34 17 33 3635,38–41
12
AX-397
DPX-1200
AX-397
13
ABCDEFGH
IJK
AX-397
■ SCHEMATIC DIAGRAM (FUNCTION)
Page 22 B-6
TO MAIN (1) W2
1
I
C302, 501, 502, 531, 532
:
NJM2068MD-TE
Dual OP-Amp
15.5 15.5
14.0
14.0
0.1
14.8
0
0
14.8
0
0
0
OUT
15.0
1
1
2
–IN
1
–+
3
+IN
1
4
–V
CC
–+
+V
CC
8
OUT
2
7
–IN
2
6
5
+IN
2
0
0
0
2
0
0.1
0
-14.7
13.5
0
0
0
0.1 0.1
3
14.1 14.1
00
CD/DVD DIRECT AMP ON
CD/DVD DIRECT AMP OFF
14.7
0.1
0.1
0.1
0.1
0.1
0.1
-14.2
5.0
5.0
4.3
0.2
0
0.2
-14.5
0
0
0
-14.5
0
0
0
-13.2
0
5.0
-6.9
5.0
Page 22 B-3
0
Page 22 A-4
TO MAIN (1) CB1
TO MAIN (3) CB201
4
0
0.7
0
0
0.7
0
CD/DVD DIRECT AMP ON
5
CD/DVD DIRECT AMP OFF
000
000
0
0
0
00
0
0
0
0
0
0
0
0
0
0
0
0
0
1.7
0.7
0
0.1
0.2
1.0
1.0
1.7
5.0
5.005.0
5.1
5.0
5.0
5.1
5.0
0
0
5.0
000
4.9
0.1
5.0
5.0
5.1
001.7
0.2
5.1
5.1
5.1
5.1
5.1
5.1
1.7
0.1
5.0
5.0
2.2
2.4
0
1
5.0
2
CH2
5.0
0
6.3
00
5.0
5.7
12.1
5.1
0
0
0
6.3
5.7
6.3
0
12.1
12.1
11.4
6.9
7.3
6.9
0
2
Page 22 A-1
TO MAIN (5) CB221
Page 22 A-2
TO MAIN (6) CB226
CH1
9.6
000
000
6
15.6-15.7
7
I
C453
I
C452
: NJU7312AM
Analog Function Switch
L1
2
L2
3
4
L3
L-COM1
5
6
L4
7
L5
8
8
L-COM2
L-COM3
VDD
VEE
L6
9
10
L7
11
L8
12
14
ST
30
1
13
NC
LEVEL SHIFTER
LATCH
CONTROL
LATCH
LEVEL SHIFTER
29
28
27
26
25
24
23
22
21
20
19
17
16
15
18 NC
R1
R2
R3
R-COM1
R4
R5
R6
R-COM2
R7
R8
R-COM3
DATA
CK
VSS
INH
: TC4053BP
Triple 2 Channel Analog Multiplexers/Demultiplexers
VDD
16
11
A
10
B
9
C
VSS
LOGIC LEVEL CONVERTER
8
VEE
7
6
OUT C IN
OUT C IN
OUT C IN
OUT C IN
OUT C IN
OUT C IN
14
X-COMMON
12
OX
13
IX
2
OY
1
IY
5
OZ
3
IZ
4
Z-COMMON
15
Y-COMMON
0
0
0
0
0
CONTROL INPUTS “ON” CHANNEL
INHIBIT
(Pin 6)
L
L
L
L
L
L
L
L
H
* Don’t Care
C
(Pin 9)
L
L
L
L
H
H
H
H
*
-9.5
(Pin 10)
0
0
0
9.6
9.6
9.6
9.6
0
00
Page 22 I-1
-9.5
15.2
0.8
0.6
1.4
15.2
Point q (Pin 20 of IC301)
I
C421
: LB1641
0
0.6
1.4
0.8
0.4 0.4 0
Motor Driver
P1
OUT 18VCC 210OUT 2
B
L
L
H
H
L
L
H
H
*
0X (Pin 12), 0Y (Pin 2), 0Z (Pin 5)
A
1X (Pin 13), 1Y (Pin 1), 1Z (Pin 3)
(Pin 11)
L
H
L
H
L
H
L
H
*
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NOTE
IN 1
GND
5
1
23
INPUT LOGIC
P2
9
VCC 1
7
4
PRE DRIVER
6
VZ
IN 2
TO MAIN (2) W151
Point w
CH 1 : Emitter of Q309
CH 2 : Collector of Q304
2.1 5.1
2.1 5.1
2.1 0.2
2.1 5.1
2.1 5.1
2.1 5.1
(Connect the power cable)
↑
AC POWER ON
5.0 5.0
↑
AC POWER OFF
(Disconnect the power cable)
0
5.0
5.0
↑
AC POWER ON
(Connect the power cable)
*
All voltages are measured with a 10MΩ/V DC electronic volt meter.
* Components having special characteristics are marked Zand
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。
21
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