2SD1938F
A
1
2
3
4
5
6
7
8
9
BCDEFGH I JKL
CRX-E300
SCHEMATIC DIAGRAM (CD)
49
AN8785SB AN8399SA-E1
MN35511AL
TC74HC125AF2SB1132 NJM2068MD
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
★ All voltage are measured with a 10MΩ/V DC electric volt meter.
★ Components having special characteristics are marked s and must be
replaced with parts having specifications equal to those originally
installed.
★ Schematic diagram is subject to change without notice.
IC404: AN8399SA-E1
CD Head Amp.
IC407: AN8785SB
5-Channel Power OP-Amp System Driver
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
+
-
-
+
-
16 10 12 11 18 17 14 13 19 1
4
5
3
6
28 26 25 24
Standby
Band gap
V
CC
/V
REF
Reset Circuit
1.25V
SW
Thermal
Protection
Circuit
IN-
IN+
OUT
VREF
222720
15
2189
IN2+
CH4 SW
IN2-
IN4
IN3
IN1
IN5
SVCC
PGND2
PGND1
STANDBY
D2-
D4-
D3-
D1-
D5-
D2+
D4+
D3+
D1+
D5+
PVCC3
PVCC1
PVCC2
23
7
2
1
14
15
21
22
29
30
7
8
28
+
–
21
20
+
–
19
+
–
2
1
SUBT
AMP
+
–
GCA BCA
32
31
23
11
16
10
4 5 6 8 9 12 13 14 15
AMP GCA BCA
30
29
AMP GCA BCA
27
AMP GCA BCA
28
SUBT
NRFDET 3TENV
OFTRBDOAGCRF EQ
BAND GAP
22
25 177 3262418
A
C
B
D
E
F
VREF
SLPSW
GCTL
TBAL
FBAL
LDRCTL
GND
VCC
CEA
RFN
RF OUT
RF IN
CAGC
ARF
CBDO
BDO
COFTR
OFTR
3T OUT
NRFDET
FEN
FEOUT
TEN
TE OUT
LD
PD
32
16
1
17
41
40
21
60
61
80
201
4G13
4A12
4Y11
3G10
3A9
3Y8
1A 2
2Y 3
2G 4
2A 5
2Y 6
GND 7
IC410: TC74HC125AF
Quad Bus Buffer
Vcc141G 1
1
7
14
B
E
C
CD HEAD AMP
LD DRIVE
PICK UP DRIVER
DSP-DAC
to CD
MECHANISM
UNIT
to CD
MECHANISM
UNIT
to CD
MECHANISM
UNIT
Point 1 Pin 59 of IC406
14
2
5
9
7
12
1
6
8
10
13
11
4
3
IC402: NJM2068MD
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
1
4
8
B
E
C
Page 50
to MAIN (1)
H3
Page 47
to INPUT (1)
G3
Page 47
to INPUT (1)
G2
4.5
2.0
3.9
2.6
2.6
0.2
3.9
5.1
2.5
2.1
4.2
2.5
1.5
2.6
3.4
2.5
4.0
0
3.8
0
0
2.6
2.6
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.6
0
0
2.5
2.5
2.5
0
0
0
0
0
0
5.0
5.1
5.1
4.9
0
4.8
4.9
0.1
0
5.1
5.1
5.1
0
2.6
0
0
5.1
0.1
5.1
~
0
5.1
4.6
5.1
2.5
2.5
0
0
0
5.1
5.1
2.1
2.6
2.6
1.4
2.6
1.9
0
2.2
2.2
4.9
2.5
4.9
0
2.5
2.5
2.2
2.2
3.4
0
2.2
2.2
2.0
2.4
4.9
4.9
2.5
0
2.5
2.5
2.5
2.5
0
0
2.5
0
0
2.6
2.6
2.6
2.5
2.4
2.6
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
0
0
2.5
2.5
2.5
5.0
5.1
5.1
0.1
5.1
5.0
0
1
CD
0
0
12.1
-11.8
0
0
0
0
K KOREAN
w
w
w
.
x
i
a
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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
http://www.xiaoyu163.com
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