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A
B
C
D
E
F
G
H
1
2
3
4
5
6
I
J
K
L
M
N
O
7
8
9
10
DSP-AX2
■
SCHEMATIC DIAGRAM (FUNCTION)
E-73/J-71
* All voltage are measured with a 10M
Ω
/V DC electric 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.
IC501 : NJM2068MD-T1
IC506–508, 511, 513–515, 521,
523–525 :
µ
PC4570G2
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
L2
L4
L3
LCOM1
L1 1
2
3
4
5
L6
LCOM2
L5 6
7
8
L8
LCOM3
L7 9
10
11
V
DD
19
V
SS
16
V
EE
12
RES 18
S 17
LEVEL SHIFTER
LATCH
SHIFT REGISTER
R2
R4
R3
RCOM1
R1
R6
RCOM2
R5
R8
RCOM3
R7
20
22
30
29
28
27
26
25
24
23
21
CONTR
OL
15 CL
14 D1
13 CE
IC503, 512 : LC78211
Analog Function Switch
IC502, 504 : LC78212
Analog Function Switch
L6 3
LCOM2 8
L8
LCOM3
L7 9
10
11
V
DD
19
V
SS
16
V
EE
12
RES 18
S 17
L2
L3
L1 1
2
3
L5 6
7
LEVEL SHIFTER
LATCH
SHIFT REGISTER
R2
RCOM1
R3
RCOM1
R1
R6
RCOM2
R5
R8
RCOM3
R7
20
22
30
29
28
27
26
25
24
23
21
CONTR
OL
15 CL
14 D1
13 CE
L4 5
LCOM1 4
IC516–520 : CS3310-KSR
Stereo Digital Volume Control
MUX
MUX
CONTROL
REGISTER
SERIAL TO
PARALLEL
REGISTER
8
8
8
8
16
16
15
14
8
1
2
3
7
6
11
10
9
12
13
4
5
AINL
AGNDL
AOUTL
MUTE
ZCEN
CS
SDATAI
SDATAO
SCLK
AOUTR
AGNDR
AINR
VA+
VA–
VD+
DGND
IC505, 522 : LC78213
Analog Function Switch
L6
LCOM3
L5 7
8
9
L7
LCOM4
10
11
V
DD
19
V
SS
16
V
EE
12
RES 18
S 17
LEVEL SHIFTER
LATCH
SHIFT REGISTER
R6
RCOM3
R5
R7
RCOM4
20
24
23
22
21
CONTR
OL
15 CL
14 D1
13 CE
L4
LCOM2
L3 4
5
6
R4
RCOM2
R3
27
26
25
L2
LCOM1
L1 1
2
3
R2
RCOM1
R1
30
29
28
IC527 : MBM29F400BC-70
4M Bit Flash Memory
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
N.C.
RY/BY
A17
A7
A6
A5
A4
A3
A2
A1
A0
CE
VSS
OE
DQ0
DQ8
DQ1
DQ9
DQ2
DQ10
DQ3
DQ11
RESET
WE
A8
A9
A10
A11
A12
A13
A14
A15
A16
BYTE
VSS
DQ15/A-1
DQ7
DQ14
DQ6
DQ13
DQ5
DQ12
DQ4
VCC
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
RY/BY
RY/BY
BUFFER
ERASE CIRCUIT
WRITE/ERASE
PULSE TIMER
LOW VCC DETECT
VCC
VSS
WE
BYTE
CE
OE
A-1
A0~A17
RESET
CONTROL
CIRCUIT
(COMMAND REGISTER)
CHIP ENABLE
OUTPUT ENABLE
CIRCUIT
WRITE CIRCUIT
I/O BUFFER
DQ0~DQ15
DATA LATCH
Y DECODER
X DECODER
ADDRESS LA
TCH
STB
STB
Y GATE
4,194,304
CELL
MATRIX
Point
e
(Pin 20 of IC26)
V : 2V/div, H : 50 nsec/div
DC, 1 : 1 probe
0V
Point
r
-A (+MB : Emitter of Q506)
Point
r
-B (/RES : Collector of Q507)
V : 5V/div (+ MB), V : 1V/div (/RES)
DC, 1 : 1 probe, H : 1 sec/div
0V
0V
+ MB
/RES
AC CORD ON
AC CORD OFF
INPUT SELECTOR
REC OUT
SELECTOR
PHONO MM
EQ AMP
BUFFER
4M
ROM
MAIN CPU
LEVEL CONTROL
RESET
POWER DOWN
DETECT
FL
FL
FL
FL
RL
RL
RL
RC
RC
RC
L
L
C
L
C
L
C
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
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11.6
-11.6
0
0
0
11.6
0
0
0
11.6
0
0
0
-11.6
0
0
0
-11.6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11.6
0
0
0
-11.6
-11.6
0
0
0
-11.6
0
0
0
11.6
0
11.6
0
-11.6
0
0
0
-11.6
0
0
0
11.6
0
11.6
0
11.6
0
0
0
0
0
0
-11.6
0
0
0
11.6
0
0
0
-11.6
0
0
0
0
0
11.6
-11.6
0
0
0
0
11.6
0
0
0
-11.6
2.2
2.2
1.6
1.8
3.0
2.0
1.6
2.5
4.8
-11.6
0
0
0
11.6
0
0
4.8
2.1
2.0
2.2
2.6
2.1
2.4
2.4
2.4
2.1
4.9
0
2.8
3.1
2.4
2.5
1.4
1.4
2.0
2.1
4.9
2.8
2.8
2.0
2.2
2.4
2.4
1.8
1.8
1.7
0
0.8
2.4
0
4.8
4.8
0
0
4.8
0
4.8
0
0
0
-5.1
4.9
0
0
0
0
4.9
-5.1
0
0
0
-5.1
4.9
0
4.8
0
4.8
0
0
4.8
4.8
0
0
0
-5.1
4.9
0
0
0
0
4.8
0
4.8
0
0
4.8
4.8
0
0
0
-5.1
4.9
0
0
0
0
4.8
0
4.8
0
0
4.8
4.8
0
0
0
-5.1
4.9
0
0
0
0
4.8
0
4.8
0
0
4.8
4.8
0
0
0
-5.1
4.9
0
0
0
1.8
3.1
2.5
1.4
2.1
4.8
4.8
4.8
0
4.8
2.8
2.2
2.4
1.8
0.8
4.8
0
4.8
4.8
4.8
4.8
0
4.8
4.9
0
1.1
0
4.9
4.9
1.4
0.3
0
4.9
4.9
4.9
4.9
0
0
11.9
0
11.9
11.2
6.5
7.1
0
0
0
4.8
0
0.6
0
11.9
5.6
5.6
5.6
4.8
4.9
0.8
4.8
0
4.8
4.8
1.7
4.8
0
4.8
0
0
4.8
4.8
4.8
0
4.9
0
4.8
0
4.8
4.8
0
4.8
4.8
0
0
4.8
0
0.5
0
0
4.9
4.3
-11.6
4.9
4.3
4.2
3.6
4.8
4.9
4.3
-11.6
4.9
4.3
4.2
3.6
4.8
4.9
4.3
-11.6
4.9
4.3
4.2
3.6
4.8
0.5
0
0.7
0
4.9
5.5
0
0
-5.7
-5.1
-11.7
-11.6
-11.6
11.7
4.8
-11.6
4.3
4.9
0
0
-11.6
0
0
-11.6
0
0
-11.6
0
0
-11.6
0
0
-11.6
-11.6
0
0
-11.6
0
0
-11.6
0
0
-11.6
-11.6
0
0
-11.6
0
-11.6
0
0
0.6
0
0
0.6
0
0
0.6
0.6
0
0
-11.6
0
0
-11.6
0
0
0.6
0.6
0
0
0
11.6
0
0
0
-11.6
0
0
0
11.6
0
0
0
-11.6
0
0
0
0
0
0
0
0
-0.1
-0.1
-0.1
-11.6
0
0
0
0
0
0
-0.1
-0.1
-0.1
11.6
0
0
0
0
0
0
0
0
0
11.8
0
0
0
-11.8
-11.6
0
0
0
11.6
0
0
2.4
2.0
2.8
2.0
1.4
2.4
2.8
2.4
2.4
2.4
2.4
2.1
2.6
2.2
0
2.0
4.8
0
0
0
0
2.5
1.6
2.0
3.0
1.9
1.6
3.2
2.2
2.1
0
0
4.8
4.8
0
4.9
0
0
4.7
4.8
4.8
0
0
4.8
4.8
0
4.8
0
4.8
0
0
4.8
2.3
0
2.2
4.8
4.8
4.9
0
4.5
0
4.8
4.9
0
0
0
4.8
4.5
CIRCUIT CHANGES BY MARKET.
X : NOT USED
Conditions
• INPUT: DVD auto
• PROGRAM: PRO LOGIC DSP