JVC SR-VS30E Service Manual page 105

0 3 MAIN(VIDEO, ON SCREEN, VIDEO I/O & SUB EMPHA, CONNECTION)
I2C_DATA_A/V
I2C_CLK_A/V
C.SYNC/V.REF
TO
P.MUTE(L)
SYSCON
V.PULSE
SP(H) SP(H)
D_OUT(L)
D_OUT(L)
P.CTL(H)
TO
TUNER TU_VIDEO
CN501
D.FF
1
15 D.FF
V.REF
2
14
I2C_DATA_A/V
3
12
I2C_CLK_A/V
4
11
C_FROM_DIGI
C
5
9
Y_FROM_DIGI
Y
6 7
EE(L)
EE(L)
7 6
V/Y_TO_DIGI
8
5
C_TO_DIGI
9
3
Fsc
10
1
WF14
CN7502
WF15
EE(L)
11 2
I2C_DATA_A/V
12 7
I2C_CLK_A/V
13 8
V_FROM_AV
Y
14 1
REC_COLOR
C
15 3
Fsc
16 10
Fsc
WF13
WF22 CN7503
Y_TO_AV
Y
17
12
V_FROM_OSD
18
4
V_TO_OSD
1
19
CHARA_DATA2
2
20
Y_TO_S.E
21 10
Y_FROM_S.E
22 8
WF24 WF23 WF21 WF20 CN7504
PB_COLOR C
23 1
MAIN_ALC_DET
24 4
Y_TO_SUB Y
25 5
P.MUTE(L)
26
6
FRONT_V_IN
27 7
FRONT_Y_IN
28 2
C_OUT
29 11
Y_OUT
30
9
WF16
WF19 WF18 WF17
CN7506
C_TO_DIGI
31 10
Y/V_TO_DIGI
32 8
Y_FROM_DIGI
33 6
C_FROM_DIGI
34 4
D_DUB_C_IN
C
35 14
D_DUB_Y_IN
Y
36 12
TO_PS_C
37 2
TO_PS_Y
38 1
TO
DV MAIN (V OUT)
CN701
CN3501
D_C_IN 1
D_Y/V_IN 3
D_C_OUT 5
D_Y_OUT 7
D_V_OUT 9
RF_Y_OUT
11
BLANK 13
J7194 2 8
CHARA 14
FRONT_S_IN
SW/DISPLAY
1
CN7191
CN7510
FRONT_Y_IN
3
Y 1 1 OSD_P.CTL(L)
4 FRONT_C_IN
C 3 3
FRONT_V_IN
2
5 5
J7191
2
FRONT
1
VIDEO IN
CN7501
FRONT_C_IN
39 7
R_V_OUT
40 1
S_Y_OUT
41 3
S_C_OUT
42 5
CN7505
TU_VIDEO
43
4
I2C_CLK2
44
7
I2C_DATA2
45
8
Note : For the waveforms in this block diagram, refer to page 4-55.
P. MUTE(L)
Q7501
OSD_P.CTL(L) IC701
SW
1
D_OUT(L)
C 4
2
C
C
6
IC702
1
Y 4
2
Y
Y
6
IC703
1
4
2
6
IC704
1
Q701
4
2
BUF
Y
6
Q702
Q703
BUF
IC705
4 NOT
BUF USED
2
C 1 EE(L)
Q704
7
3
5
NOT
VR701
TP701
USED
D_Y/V_IN
D_Y/V
IC706
4 NOT
USED
2
1
Y
BUF
3 7
Q705
5
NOT
USED
C
C
Y
Y
Y
Y
C
Q715
C
BUF
Q708 Q706
BUF BUF
Q709 Q707
C
Y
C
Y
Y
Q712 - Q714
Q717 - Q723
CHARA/FRAME
SEP.
IC601
D_OUT(L)
18
P.MUTE(L)
EQ
SP
1
17
2 SP
EE(L) EQ
REC PB 16
5 NON LINEAR 12
SP(H)
PROCESSOR
11
EQ
PB
6
SP
REC
SP 10
EQ
VHS(H)
WF4
TP106
WF1
PB FM
Q6
C
ES
Q21
Y
Q5
BUF BUF
& EQ BUF
WF3
WF2
26 29 27 30 2 1
2fsc VCO
BDL C
VCA
LPF BDL
fH LOCK CTL
C.K
R P
6dB AMP 6dB AMP
LEVEL
Det1 Color Killer
N P
ID Det.
C.SQUELCH
CLPF Delay
B.E LEVEL
APC ACC Det
B.D Det2
SW
R P
SQUELCH
Pulse
Gen.
WHITE
LIMITER
EXT
CLEAR
CLPF
SYNC
INT
25
NOT
Sync.Sep.
Main Main
USED CTL TRAP
Conv2 Conv1
C.K
fH HPF
L-SECAM L-SECAM P
P R R P
TRAP
R
P
PILOT C
BPF
ADD
MIX
R
LEVEL
ADJ
Clamp
G
R EQ
REC N.L. N.L.
De.Emph Emph
DO
21 AGC Det P DLIM
Det
PB ALC
DeMOD
SQPB SQPB
SQPB ET
D.E.
P EQ ET ET LPF
Sub LPF
22 APT CTL N.C.
ATT
(-10dB )
R
FBC/ALC
Main
De.Emph
20
NOT
ATT
(-10dB )
USED
Video
AGC
18
NOT ATT
R P
USED (-10dB ) YNR
16 DO
DO
C Y /REC
ATT
(-10dB ) BDL
C Y LPF
WF10
I2C BDL R P R P P R
46 LOGIC Clamp
LPF
Clamp
DATA
45
CLK
10 11 6 12 14
13
WF7
FILTER
WF9
Y WF8
Y
VHS(H)
IC201
( ON
DISPLA
4
CHABLK
3
P. MUTE(L)
MUTE
21
Y
CV_IN
19
CVOUT
WF11
WF12
2
2Fsc XTAL_IN
4-65 4-66
2Fsc
Q10
BUF Fsc
WF5 TP111
Q24
D.FF
BUF
X1
34 44 42 40 38 55 D.FF
fsc IN
LPF
X-tal
CR Det. VCO/OSC
2fsc
P R
112
Head SW1
PB REC REC PB/REC D.FF CTL
APC APC AFC Discri Head SW2
111
ENV DET
1/2 HPF
DOWN 1/2
Conv. 2FL VCO
Phase SW.
120
ME
SECAM TANC
DET
4Phase
Gen.
SP 101
P DET
Comp
2M LPF
ACC DET
R EP
(LP)
HPF
L-SECAM 104
LPF REC
YCA
MUTE
L-SECAM
COMP
SP2
+
SEP .
P
105
SQPB
SP2
SQPB P 629
FM AGC
DL EQ -
TRAP
R
CH2
DET
SQPB WF6
SP1
- 106
CH1
SP1
+
+
108
REC LP2
Filter
-
CH2
LP2
FM MOD
CH1
109
-
fo/Dev Adj
Main Emph LP1
Carrier Offset S-DET
+
W .C/D.C
LP1
110
IC1
( VIDEO & AUDIO
SIGNAL PROCESSOR)
7 8
Q17 SW
SCREEN
Y )
8
SYNC_DET
9
CS1
10
SCLK
11
SDATA
27
CS2
5
LN21
TO
SYSCON
D.FF
VIDEO_ENV
HEAD_SEL
U.DRUM
VIDEO
CN1 HEAD
8 8 8
SP CH2
7 7 7
6 6
6
SP CH1
5 5 5
4 4 4
EP(LP) CH2
3
3 3
2 2 2
EP(LP) CH1
1 1
1
NORM/MESEC/S
VHS(H)
SYNC_DET(H)
TO
OSD_CS
S.CLK SYSCON
S.DATA_FRSYS
I2C_CLK2
I2C_DATA2