Sony SLV-GA30, Service Manual, Page: 19 / 120

SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99
3-2. VIDEO BLOCK DIAGRAM
3-3 3-4
BOARD
JK-166
1
CNJ801
CN651
DRUM
VIDEO
HEAD
SP
CH1
SP
CH2
CN102
89
88
86
87
SP1
5
2
1
6
VIDEO
IN 1
V IN2
MA-336 BOARD
IC101
SP2
SP1
SP2
VCA
SW30
SW29
SP
SP
REC
MUTE
79 78 81
DRUM FF
Q102
BUFF
3
2
CN101
V SW P
PB RF
FOR
CHECK
VIDEO
REC/PB AMP
Y/C PROCESSOR
N.L.
DE EMPH
ENV
DET
HPF
REC
MUTE
97
SW28
84
SW27
SW20
HPF
P
R
SW19
SEP
COMP
ACC
LPF
CTL TRAP
fH HPF
SW18
P
R
TRAP
SW24
P
R
P R
SW7
629
TRAP
FM
AGC
P EQ
MMS
DL
SW8
VIDEO
AGC
ATT
(-10dB)
ATT
(-10dB)
ATT
(-10dB)
1
CNJ651
VIDEO
IN 2
31
30
28
CN202
1/2
2FL
VCO
4 PHASE
GEN
MAIN
CONV.1
MAIN
CONV.2
SW21
R
P
C
LPF
C
LPF
R
P
R
P
SW23
SW22
MIX
LEVEL
C.K B.E
DL
R
DL
P
R
P
SW25
SW26
VCA
CCD
LPF
B.D CK N P
G EQ DLIM DEMO
SUB
LPF
1M
HPF
7M
LPF
LPF
FM
MODE
MAIN EMPH
CARRIER
OFFSET W.C/DC
MAIN
DE-EMPH
SW10
P
R
SW5
Y
LPF
SW13
P
R
SW11
R
P
D.E.
N.C.
N.L.
EMPH
FBC/
ALC
SW17
R
R P CLP
Y NR
SW14
DO
DO REC
CLP
58
60
23
35
46
24 LPF
C
CCD
26 39
Y
CCD
42 21
44 CLOCK
SYNC
SEP
50
PB
APC
CR DET
2fSC
X-TAL
VCO/OSC
PULSE
GEN.
REC
APC
REC
AFC
76 71 73 75
X101
4.43MHz
X102
3.58MHz
Q101 Q101
16
Q104 Q103
SHARPNESS
CONT
Q217-219
19 17 18
Q204
PAL
69
54 55
6dB
AMP
C
SQUELCH
6dB
AMP
CLEAR
SYNC
SQUELCH
VIDEO
ALC
52
51
63
62
SERIAL
CONT
64 KILL
Q215,216
BUFF
2fSC
AMP
Q205,214
43
BOARD
JK-166
3
CNJ801
VIDEO
OUT 1
V OUT2
3
CNJ652
VIDEO
OUT 2
CN651
CN202
53
52
OSD 45
IC201
(1/3)
Q801
BUFF
Q224,225
AUDIO 2
TV/VTR 4
VIDEO 1
RFU801
IN
OUT
16
RF SW P IC201 24
TO/FROM
SYSCON
BLOCK
C SYNC IC201 54
V ENV IC201 13
MESECAM IC201 80
QVD IC201 27
TO/FROM
SYSCON
BLOCK
V DATA IC201 100
V CLOCK IC201 99
KILL IC201 19
SHARP 1 IC201 20
SHARP 2 IC201 29
SHAPNESS IC201 94
NTSC IC201 18
RFU AUDIO
FROM
AUDIO
BLOCK
EXCEPT
GA77K:PL/
GF99K:PL
GA66/GA77K/GF99K
MODEL
GA66/GA77K
GF80/GF90K/GF99K/PH99
MODEL
EXCEPT GA77K:PL/GF99K:PL MODEL
CN101
3
REC/PB
CN101 2 PB
IC101 *§, *ª REC
IC101 !• REC/PB
IC101
@¡
REC/PB
IC101 #∞ REC/PB
IC101
#ª
REC/PB
IC101 $¢ REC/PB
IC101
$§
REC/PB
IC101 $™ REC/PB
5Vp-p
25Hz
0.1V/div 0.2
µ
sec/div
0.5V/div 0.1
µ
sec/div
REC:0.4Vp-p
PB:0.48Vp-p
REC:0.41Vp-p
PB:0.6Vp-p
REC:0.4Vp-p
PB:0.5Vp-p
REC:0.28Vp-p
PB:0.35Vp-p
REC:2.2Vp-p
PB:2.3Vp-p
REC:0.5Vp-p
PB:0.6Vp-p
REC:0.35Vp-p
PB:0.38Vp-p
REC:0.28Vp-p
PB:0.35Vp-p
0.4Vp-p
0.58Vp-p
H
H
H
H
H
H
0.45Vp-p 8.8671MHz
IC101
%º
REC/PB
IC101 %™ REC/PB
IC101 %∞ PB
IC101 %• REC/PB
IC101
^º
REC/PB
IC101 ^ª REC/PB
IC101
&¡
REC/PB
IC101 &£ REC/PB
IC101
&∞
REC/PB
4.6Vp-p
H
H
H
H
H
8.667MHz
0.46Vp-p
0.1Vp-p
3.579545MHz
4.433619MHz
4.433619MHz
0.66Vp-p
0.54Vp-p
(SEE PAGE 4-5)
(SEE PAGE
4-26)
(SEE PAGE 4-26)
(SEE PAGE 3-8)
(SEE PAGE 3-5)
(SEE PAGE
3-5)
IC201
$£$∞
REC/PB
2Vp-p
H
IC201 %£ REC/PB
2.6Vp-p
8.86716MHz