STR-K7200
STR-K7200
48
48
• IC Block Diagrams
– MAIN Board –
IC400 BD3471KS2
1
GND
2
HPFN
3
LPF01
4
LPF02
5
LPFN2
6
LPFN1
7
SWVOL
8
VCC
9
DGND
10
DA
11
CL
12
VEE
13
FROUT
14
FLOUT
15
SWOUT
16
COUT
17
SROUT
18
SLOUT
19
SBROUT
20
SBLOUT
21
GND
22
GND
23
RECL4
24
RECR4
25
RECL3
26
RECR3
27
RECL2
28
RECR2
29
RECL1
30
RECR1
40
GND
39
INR13
38
INL13
37
INR14
36
INL14
35
INR15
34
INL15
33
INR16
32
INL16
31
GND
60 INR3
59 INL3
58 INR4
57 INL4
56 INR5
55 INL5
54 INR6
53 INL6
52 INR7
51 INL7
50 INR8
49 INL8
48 INR9
47 INL9
46 INR10
45 INL10
44 INR11
43 INL11
42 INR12
41 INL12
61
INL2
62
INR2
63
INL1
64
INR1
65
GND
66
SBLIN1
67
SBRIN1
68
SBLIN1
69
SLIN1
70
SRIN1
71
CIN1
72
FLIN1
73
FRIN1
75
ADCR
76
ADCL
74
GND
78
SUB1R
79
SUB1L
77
GND
80
GND
ADC
SWITCH
FR
VOLUME
SUB1
LOGIC
SWITCH
SWITCH
SWITCH
SWITCH
FL
VOLUME
SW
VOLUME
C
VOLUME
SR
VOLUME
SL
VOLUME
SBR
VOLUME
SBL
VOLUME
EQ
REC
SUB2
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
IC600, 700, 800
μ
PC2581V-S
2
3
5
4
6
7
9
8
1
MUTE
+ VOUT1
– VOUT1
COMP1
MF1
IN1
GND
IN2
NF2
COMP2
– VOUT2
+ VOUT2
VCC1
VCC2
VEE
PROTECTOR
BIAS CIRCUIT
REG
DRIVE
PRE
DRIVE
11
10
12
13
15
14
DRIVE
PRE
DRIVE
– DIGITAL AB Board –
IC1008 TC74VHC157FT (EL)
SELECT 11
1
1A 2
3
4
5
6
7
INPUT
INPUT
OUTPUT
OUTPUT
1A
1B
1Y
2A
2B
2Y
1B
1Y
2A
2B
2Y
GND 8
V
CC
STROBE
16
4A
15
14
13
11
12
11
10
INPUT
INPUT
OUTPUT
OUTPUT
G
4B
4Y
3A
4A
4B
4Y
3A
3B
9
3B
3Y
3Y
S
IC1012 SI-3050KM-TL
IC1013 SI-3033KM-TL
1
VC
TSD
2
VIN
3
GND
4
VOUT
5
ADJ
+
–
REF
IC1016 TC74VHC393FT (EL)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
Q
A
Q
B
Q
C
Q
D
A
CLEAR
VCC
Q
A
Q
B
Q
C
Q
D
A
CLEAR
GND
IC1017 TC7WH157FK (TE85R)
SELECT
11
6
ST
11
7
A 1
2
3
A
B
Y
5
Y
B
GND 4
VCC
8
Y
EN G
Y