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Yamaha AX-596 サービスマニュアル
A
B

SCHEMATIC DIAGRAM

1
PHONO EQ AMP
12.7
0
0
0
0
0
0
-12.8
2
12.9
13.0
13.8
13.5
0
0.1
0
-0.6
-0.6
0.6
0.6
0
0
0.1
-13.6
-13.0
-13.1
-13.6
CD BUFFER
-13.6
-13.0
-13.6
-13.0
0.1
0
3
0
0.6
0.6
-0.6
-0.6
0
0
0.1
13.1
13.8
12.9
13.5
4
CD/DVD DIRECT
AMP OFF
12.9
0
0
0
0
0
0
-13.0
12.9
0
0
0
0
5
0
0
-13.0
0 0
0
0
0 0
0 0
0
0
0
0
12.9
0
0
0
0
0 0 0
0 0 0
0
0
0
6
0
0
-13.0
INPUT SELECTOR
12.9
0
0
0
0
7
0
0
-13.0
8
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
2SD1915F
2SC1815
2SC4488
2SC1740S
2SA1015
DTC114ES
2SC1890A
DTC144ES
2SA933S
E
C B
E
E
C
B
9
C
D
E
11.8
12.4
13.0
CD/DVD DIRECT
AMP ON
0
0.7
0
0
0.7
0
0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 0
11.8
9.9
0.7
MOTOR DRIVER
DIODES
NJM2068LD
LB1641
LC78211
NJM4558L
Anode
10
8
B
Cathode
C
30
1
1
1
F
G
4
13.7
0
0
0
VOLUME AMP
0
0
0
-13.8
SYSTEM
CONTROL
4.8
9.9
1.0
0.4
0.6
0
0.5
0.6
0
0
0
4.9
4.4
0.4
NJM2068LD / NJM4558LD
LC78211
L1
1
2
L2
3
L3
4
1
2
3
4
5
6
7
8
L4
LCOM1
5
6
L5
L6
7
8
LCOM2
L7
9
M34748E8SP
10
L8
11
21
LCOM3
19
V
LEVEL SHIFTER
DD
15
16
V
SS
LATCH
12
V
EE
18
RES
SHIFT REGISTER
42
17
S
1
H
I
K
CD/DVD DIRECT AMP &
PURE DIRECT OFF
To MAIN (1)
see page 17
TONE CONTROL AMP
PROTECTION
14.6
14.5
4.9
14.6
4.8
14.6
To MAIN (1)
0
-0.1
0
see page 17
0.7
0
To/From MAIN (1)
see page 17
5.5
4.9
5.5
13.6
5.5
5.5
6.1
4.8
5.5
5.5
-14.6
6.1
2
0
4.8
13.7
13.8
3
0
0
13.1
1
0
1.7
7.3
6.6
0
0
RESET
0
14.5
14.6
13.9
0
4.8
0
0
4.4
4.4
4.8
4.4
LB1641
30
R1
29
R2
3
2
8
10
9
7
28
R3
27
R4
26
RCOM1
VZ
25
4
R5
24
R6
23
RCOM2
22
R7
# All voltage are measured with a 10MΩ /V DC electric volt meter.
21
R8
# Components having special characteristics are marked s and must be replaced
20
RCOM3
IN 1
5
INPUT LOGIC
IN 2
6
with parts having specifications equal to those originally installed.
GND
1
# Schematic diagram is subject to change without notice.
14
ZZ
D1
15
ZZ
CL
13
CE
ZZ
J
K
L
AX-596
13.4
0.1
0
0.1
0.1
0
0.1
-14.5
PHONES
A
B
SPEAKERS
14.1
0
0
0
G
0
0
0
1
-14.2
0
0
-14.6
0
0
MUTING
Point 1 and 2
Emitter of Q322
Base of Q316
With the POWER switch
Disconnect the power cord
turned ON, connect the
from the AC outlet.
power cord to the AC outlet.
Point 3
Pin 20 of IC308
16