Video Block Diagram - Sony SLV-772HF Service Manual

SLV-772HF/779HF

3-2. VIDEO BLOCK DIAGRAM

MA-341 BOARD
(SEE PAGE 4 – 7, 9)
FROM
TUNER
TU701 28 TU VIDEO
BLOCK
CJ561
(SEE PAGE 3-6)
LINE 1
IN
VIDEO
MF-316
BOARD
CJ801 (SEE PAGE 4-23)
CN423
LINE 2
IN
1 1
IC201 @• REC/PB
CN491
VIDEO
H
IC260
VIDEO REC/PB AMP
DRUM
VIDEO CN260 PB
HEAD
11 16
SP
CH1
10 SW3
PB C SYNC
7 19
SP
CH2 RF ENV
ENV
6
DET
PB
9 24
EP
CH1 PB RF
8
COMP
PB
ENV SW
13 21
EP
CH2
HA
12
CONT
HA SWP
IC260 4 REC/PB
REC
17
3.6Vp-p
V
AGC
RF SWP
DET
REC C
REC ATT
22
REC RF
AGC
REC H
1 12
REC CUR ADJ
TRICK H
CN270
PB RF
2
CHECK
RF SWP
PIN 3
IC260 @™ REC
0.1µsec/div
0.5V/div
16
IC201 #¶ REC
1.0Vp-p
H
IC201
(1/2)
Y/C PROCESSOR
39
CLP
VIDEO
37 CLP 32 31
AGC
35 CLP
SYNC
28
SEP
4.2Vp-p
IC260 7 PB
SW5V
V 0.4Vp-p
L270
IC201 1 PB
13
5
0.4Vp-p
6
R
ACC
AMP
P
R
C
LPF
P
7 1
2
FM SQPB
4
AGC EQ
S
PB
EQ
Q201 N
3
6 BUFFER 8
IC260 !º REC
4
KIL
480mVp-p
H
REC C
10 2
REC Y RF
9 7
11 95
REC H
16 REC CUR ADJ
99 TRICK H
IC260 9 REC
0.1µsec/div
50mV/div
3-3
FROM
IC160 13 Q VD
SYSCON
BLOCK
(SEE PAGE 3-5) IC201 @£ PB
H 480mVp-p
25
Q VD
CHARA 6dB
INS AMP
KIL
B.D
R
FBC 1/2
P
R
LPF YNR
P
Y/C
P R
MIX
R
PIC
P
CONT
DHP
NC
INV
N.L
De-EM
R
BPF1
P
BACK UP MAIN
BPF2
AMP CONV.
Q202
R
SUB SUB
BUFFER
10
COMV. BPF
P
SUB
DOUBLE
DEM
LIM LPF
PB
BGA-B
PB
BGA-A
P
R
REC
IC201 2 REC BGA
H 480mVp-p
REC FM MAIN N.L DETAIL
EQ MOD EMPH. EMPH. ENH
RF SW P
IC201 (•
REC/PB
SERIAL
DECODER
1.5Vp-p
30Hz
RW SWP HA SWP C ROT
98 97 96 21 20
I2C DATA IC160 72
I2C CLK IC160 71
C ROT IC160 15
C SYNC IC160 58
RF ENV IC160 8
(SEE PAGE 3-5)
ENV SW IC160 17
HA SWP IC160 16
RF SWP IC160 18
IC201 @ª REC IC201 @ª PB
IC160 %™ OSD V OUT PB
H 2.3Vp-p
H 2.2Vp-p
IC160 (1/3)
OSD Q500
JS202
29 50 OSD V IN OSD V OUT 52 BUFFER
Q502
OSD 56 C VIDEO IN
23
24
IC160 %§
IC160 %º OSD V IN REC
Q203
1H
43 46 47 BUFFER
DL
H 2.2Vp-p
CLP 41 IC160 %º OSD V IN PB
CLK IN 50
2.3Vp-p
H
61 53
1H/2H
59 55 52
DL
AMP 63
LPF
DL
EQ
17 CLP
IC201 ^¶ REC/PB
3.579545MHz 460mVp-p
B
REC
VXO1 67
APC
PA
X201
3.579545MHz
66
65
VCO 62
60
SLD
FROM/TO
SYSCON
BLOCK
3-4
OSD V OUT
IC160 %™
REC
H 2.3Vp-p
H 2.2Vp-p
CJ561
Q561
LINE
OUT
BUFFER
VIDEO
TO
TUNER
RF VIDEO TU701 5
BLOCK
(SEE PAGE 3-6)
C VIDEO IN
REC/PB
H 2.1Vp-p