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Manuals
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Aiwa Manuals
Receiver
CX-BK7
Service manual
Aiwa CX-BK7 Service Manual page 90
Dvd deck receiver
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CX-BK7
• IC Block Diagrams
– RF Board –
IC001 SP3723BDAOPM
64 63
62 61 60 59
INPUT
SEL
ATT
4
DVDRFP
1
MUX
ATT
DVDRFN
2
2
INPUT
IMPEDANCE
SEL
BUFFER
COMPARATOR
A2
3
B2
4
GCA
EQ
C2
5
D2
6
3
3
FROM
FROM
VC
S-PORT
S-PORT
CP
7
CN
8
D
D
9
C
C
10
GCA
B
B
11
A
A
12
FROM
MUX
S-PORT
CD D
13
CD C
14
GCA
W/LPF
CD B
15
CD A
16
CD/DVD
FROM
S-PORT
GCA
GCA
3
FROM
FROM
S-PORT
S-PORT
VCI FOR SERVO INPUT
VC = VPB/2
LD H/L
FROM S-PORT
17
18 19 20
21 22
90
58
PROGRAMMABLE
INPUT
AGC
BIAS
DIFFERENTIATOR
2
INPUT
IMPEDANCE
SEL
AGCO
+
CLAMP &
ENVELOPE
–
+
2
LEVEL
–
SIGDET
DAC
PHASE
–
–
DETECTOR
+
+
PHASE
DETECTOR
A+D
+
GCA
+
4
FROM
+
S-PORT
+
B+C
MUX
GCA
3
CD/DVD
IMPEDANCE
B+D
+
+
+
+
SUM
AMP
+
+
A+C
3
–
+
4
APC SEL
DUAL APC
DVD/CD
INTERNAL
FDGHG
23
24 25
26
27
57
56
55 54
OUTPUT
FULL WAVE
INHIBIT
RECTIFER
FROM S-PORT
EQUALIZER
FILTER
TOPHOLD
–
OFFSET
+
CANSEL
TOPHOLD
4
FROM
S-PORT
–
OFFSET
GCA
LPF
+
CANSEL
5
FROM
S-PORT
OFFSET
GCA
LPF
SUB
GCA
CANSEL
6
CP/CN
CEFDB
FROM
LOW
S-PORT
OFFSET
GCA
LPF
CANSEL
5
FROM
S-PORT
BCA
TOP
DET
HOLD
2
FROM
DAC
S-PORT
HYSTERESISTER
& OFFSET
FROM S-PORT
INPUT GAIN
FROM S-PORT
2
MIRR
COMPARATOR
PEAK/BOTTOM
HOLD
28 29
30
53 52
51
50
FAST ATTACK
AGC
HOLD
AGC CHARGE
PUMP
CONTROL
SERIAL
SIGNALS
PORT
TO EACH
REGISTER
BLOCK
V33 FOR
OUTPUT
3
BUFFER
LPF ATT
CE ATT
POL SEL
CEPOL
BUFFER
PI
FE
TE
MNTR
CE
CONTROL
V25
V125
V25/3
GCA
GCA
GCA
GCA
TE
GCA
GCA
RST
3
FROM
S-PORT
FOR SERVO
PH
OUTPUT
HOLDEN
V25/2
SEL
COMPA-
RATOR
–
+
GCA
SEL
LINKEN
BOTTOM
INPUT
AGCO
ENVELOPE
IMPEDANCE
2
FROM S-PORT
SINK CURRENT
2
FROM S-PORT
INPUT
BUFFER
MUX
31
32
49
48
SDEN
47
SDATA
46
SCLK
45
V33
44
LCP
43
LCN
42
MNTR
41
CE
40
FE
39
TE
38
PI
37
V25
36
V125
35
TPH
34
DFT
33
LINK
PH
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