Sony hcd-fc7 Service Manual page 80

HCD-FC7
QQ
3 7 63 1515 0
– RF BOARD –
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
TE VC
L 13942296513
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
www
LD H/L
FROM S-PORT
.
17 18 19 20 21 22
80
http://www.xiaoyu163.com
IC001 CXD1881AR
58
PROGRAMMABLE
INPUT
AGC
BIAS
DIFFERENTIATOR
2
INPUT
IMPEDANCE
SEL
AGCO
+
CLAMP &
ENVELOPE
–
+
2
LEVEL
–
SIGDET
DAC
PHASE
– –
DETECTOR
+
+
PHASE
DETECTOR
TOPHOLD
TOPHOLD
A+D
+
GCA
+
4
FROM
+
S-PORT
+
B+C
MUX GCA
3
CD/DVD
IMPEDANCE
B+D
+
+
+
+
SUM
AMP
+
+
A+C
3
–
+
4
HYSTERESISTER
APC SEL
DUAL APC
DVD/CD
x ao
y
INTERNAL
FDGHG
i
23 24 25 26 27
http://www.xiaoyu163.com
8
57 56 55 54
OUTPUT
FULL WAVE
INHIBIT
RECTIFER
FROM S-PORT
EQUALIZER
FILTER
–
OFFSET
Q Q
+ CANSEL
3 6 7 1 3
4
FROM
S-PORT
–
OFFSET
GCA LPF
+ CANSEL
5
FROM
S-PORT
OFFSET
GCA LPF GCA SUB
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
& OFFSET
FROM S-PORT
INPUT GAIN
FROM S-PORT
2
MIRR
COMPARATOR
u163
PEAK/BOTTOM
HOLD
.
28 29 30
2 9 9 4 2 8
53 52 51 50 49
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
1 5 0 5 8 2 9 9 4
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
m
AGCO
ENVELOPE
IMPEDANCE
2
FROM S-PORT
SINK CURRENT
2
FROM S-PORT
co PH
INPUT
BUFFER
MUX
31 32
9 9
48 SDEN
47 SDATA
46 SCLK
45 V33
44 LCP
43 LCN
42 MNTR
41 CE
2 8 9 9
40 FE
39 TE
38 PI
37 V25
36 V125
35 TPH
34 DFT
33 LINK