Sony HCD-EA20 - Page 60

60
HCD-EA20
IC501,521,551 NJM4580E(TE2)
1
2
3
4
5
6
7
8
A OUT
A –IN
A +IN
V–
V+
B OUT
B –IN
B +IN
A
B
VR 2
VR 1
VIN1 VOUT1 GND DATA
VIN2 VOUT2 VCC CLOCK
7
2 3 4
8
1
REF AMP
VOL AMP 2
VOL AMP 1
6
LOGIC
CONTROL
5
VREF
IC502,522,552 M62429P
OVER
CURRENT
PROTECTOR
LATCH
&
DRIVER
OVER HEAT
PROTECTOR
REGULATOR
ON/OFF
SOFT
START
+
–
+
–
RESET
VREF
COMPARATOR
ERROR AMP
OSC
1
VIN
2
SW OUT
3
GND
4
VOS
5
ON/OFF
IC951 SI-8120JF
OVER
CURRENT
PROTECTOR
LATCH
&
DRIVER
OVER HEAT
PROTECTOR
REGULATOR
+
–
+
–
RESET
VREF
COMPARATOR
ERROR AMP
OSC
1
VIN
2
SW OUT
3
GND
4
VOS
5
S.S
IC952 SI-8050S-LF1101
OVER
CURRENT
PROTECTOR
LATCH
&
DRIVER
OVER HEAT
PROTECTOR
REGULATOR
ON/OFF
SOFT
START
+
–
+
–
RESET
VREF
COMPARATOR
ERROR AMP
OSC
1
VIN
2
SW OUT
3
GND
4
VOS
5
ON/OFF
IC953 SI-8033JF
1
1OE
56
1LELE
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
LATCH
LATCH
28
2OE
29
2LE
OE
LE
OE
1D1
1D2
GND
1D3
1D4
VCC
1D5
1D6
GND
1D7
1D8
1D9
1D10
2D1
2D2
2D3
GND
2D4
2D5
2D6
VCC
2D7
2D8
GND
2D9
2D10
1Q1
1Q2
GND
1Q3
1Q4
VCC
1Q5
1Q6
GND
1Q7
1Q8
1Q9
1Q10
2Q1
2Q2
2Q3
GND
2Q4
2Q5
2Q6
VCC
2Q7
2Q8
GND
2Q9
2Q10
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
– DMB03 BOARD –
IC216 SN74ALVCH16841DGGR
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
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