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Sony Manuals
Speaker System
HCD-GX90D
Service manual
Sony HCD-GX90D Service Manual page 64
Mini hi-fi component system
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:
Service manual
(104 pages)
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HCD-GX90D/RV800D
– RF Board –
IC001 CXD1881AR
64 63
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
B
B
11
A
A
12
MUX
S-PORT
CD D
13
CD C
14
W/LPF
CD B
15
CD A
16
CD/DVD
S-PORT
GCA
3
FROM
S-PORT
VCI FOR SERVO INPUT
VC = VPB/2
FROM S-PORT
17
18 19 20
21 22
64
62 61 60 59
58
INPUT
AGC
BIAS
2
INPUT
IMPEDANCE
SEL
+
CLAMP &
–
ENVELOPE
2
LEVEL
SIGDET
DAC
PHASE
–
DETECTOR
+
+
PHASE
DETECTOR
A+D
+
GCA
+
FROM
+
GCA
S-PORT
+
B+C
MUX
GCA
3
CD/DVD
FROM
B+D
+
+
+
+
SUM
GCA
AMP
+
+
A+C
3
FROM
–
+
GCA
4
FROM
S-PORT
APC SEL
DUAL APC
DVD/CD
LD H/L
23
24 25
26
27
57
56
55 54
OUTPUT
FULL WAVE
INHIBIT
RECTIFER
PROGRAMMABLE
FROM S-PORT
EQUALIZER
FILTER
DIFFERENTIATOR
AGCO
+
–
–
TOPHOLD
–
OFFSET
+
CANSEL
TOPHOLD
FROM
S-PORT
–
OFFSET
GCA
LPF
+
CANSEL
4
FROM
S-PORT
OFFSET
GCA
LPF
GCA
SUB
CANSEL
CP/CN
CEFDB
FROM
LOW
S-PORT
IMPEDANCE
OFFSET
GCA
LPF
CANSEL
5
FROM
S-PORT
BCA
TOP
DET
HOLD
FROM
S-PORT
HYSTERESISTER
& OFFSET
FROM S-PORT
INPUT GAIN
FROM S-PORT
MIRR
COMPARATOR
PEAK/BOTTOM
INTERNAL
HOLD
FDGHG
28 29
30
53 52
51
50
FAST ATTACK
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
4
GCA
GCA
5
TE
GCA
GCA
RST
6
3
FROM
S-PORT
FOR SERVO
OUTPUT
HOLDEN
V25/2
SEL
COMPA-
RATOR
–
2
+
GCA
SEL
DAC
LINKEN
INPUT
AGCO
IMPEDANCE
2
2
FROM S-PORT
SINK CURRENT
2
FROM S-PORT
INPUT
BUFFER
31
49
AGC
HOLD
48
SDEN
47
SDATA
46
SCLK
45
V33
44
LCP
43
LCN
42
MNTR
41
CE
40
FE
39
TE
38
PI
PH
37
V25
36
V125
35
TPH
34
DFT
33
LINK
BOTTOM
ENVELOPE
PH
MUX
32
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