JVC DR-MV1SUC Service Manual page 54

VIDEO BLOCK DIAGRAM(2)
TO
SYSCON
I2C_DATA_AV
I2C_CLK_AV
V.PULSE
C.SYNC
SB_GAIN(PWM)
TO
TU_VIDEO1
TUNER
Fsc
1
TO DIGITAL
IC7101
(VIDEO IF)
CN1001
CN7108
C 2
COUT 6dB 75 DRV
11 LPF
Y
FILTER
YVOUT 6 -6dB + 6dB
Cb
CBOUT 14 NOT 4
6dB
Cr USED
5 LPF 75 DRV
10
CROUT BUF
18
VYIN
Q7101
6
20 6dB LPF 75 DRV
CIN
10
6dB LPF 75 DRV
CN7104
12
6dB LPF 75 DRV
CTODIGI
2 3
14
YTODIGI
6dB LPF 75 DRV
3 1
9 2 JUNCTION (VIDEO)
CN7107
CN7501
4 PR
Pr
1
J7503
PB
4
COMPONENT
Pb
VIDEO OUT 1
4 Y
Y
1
Q7573
4
BUF
J7502
1
LINE OUT
Y
10
9
Y
C
11
C
12
J7501
VDR OUT 4
1
13
Y
14
Y
C
16
C
15
J7501
LINE IN
8
5
SLED_V_IN
4
FRONT_V_IN
5
REAR_C_IN C
6
REAR_Y_IN Y
7
V_FROM_OSD
8
FRONT_C_IN C
9
FRONT_Y_IN Y
10
2 7 OPE/JACK
CN7201 CN3104
1
J7204 Y
3
Y 11 3
FRONT_S_IN 4
C
2
C
9 5
2
J7201 13 1
1
V_IN
26
C
23
21 Y
20
18
16
NOT
USED
13 11 9 4 6 2 1
1 3 5 10 8 12 13
35
NOT
USED
WF3
13
14
12
IC7502
WF1 IC1-19 WF2
REC 1.0Vp-p REC 0.7Vp-p
0.5V/20µsec/DIV 0.2V/20µsec/DIV
L7
FILTER
53 55 57
59 58 65
CLOCK DRIVER DOWN
LCVCO
CONV
CCD-
48
ACC ACC
CONT MODE CHROMA
ACC DET SW DET DISCRI
CONTROL
51
CCD BLOCK
KINSEKI
MSM7470 Series
SW30
49
P
Y-CCD
VCA
CLPF2 CLPF1
46 4PHASE
R
C-CCD
R P SW33
45 R P
SW29
CCD
LPF
MAIN
+ MAIN
CONV2 CONV1
74
SW31
DATA
P R
73
SW32
P R
CLK SW51
R
L-DET
P
SW27
43 P NP PILOT PILOT
C.K B.D
CONV ERASE
ADD
P
C
42 R*L-SECAM
BPF SW28
4.43PAL
MPAL CONV.
EXT R
INT DELAY
SW26
40
SW17
6dBAMP
SW15
SVHS+L-SECAM P
SECAM
N.L. DELAY Y-LPF
LPF SQPB EQ +SSEQ
38 DE-EMPH
R
VIDEO AGC
SQPB
SVHS+L-SECAM
SW19 SQPB SW16
SW20
R
C-SQUELCH P
37 SW24
DO
GCL
GCL
DO/REC GCL
SW23
34 R*SDECK
GCL
R*SVHS ATT
SW14 ATT ATT ATT
N.L. -10dB -10dB -10dB -4dB
33
YNR DEH ET LPF
EMPH
V-AMP
36
25 HP-NC PC
SW18
TRAP-NC
SW52
P
28 CLEAR R
SQUE VIDEO ALC
LCH SYNC / FBC
R
31 SW21 SW22 R*SDECK
R*SDECK ATP
SYNC
35PinGCL
SEP ATT
PG AGC DET -6dB
R*SDECK 0.5Vp-p R*SDECK
29
PG
GCL
27 24
23 26 21
19 17 15
NOT
NOT
USED USED
WF2
Q7501
BUF
2-61 2-62
TP106 TP111
IC1-26 WF3 IC1-29 WF4 PB.FM WF5 D.FF
REC/PB 2.1Vp-p PB 0.4Vp-p REC/PB 0.4Vp-p
1.0V/20µsec/DIV 20mV/20µsec/DIV 0.2V/10msec/DIV
0 3 MAIN (VIDEO/N. AUDIO, TERMINAL, ON SCREEN)
WF4
X2
NOT
TP106
NOT
USED
PB. FM
USED
72 63 67 69 71 70 76 77 78
CCD
CONT
X-TAL CR DET
2fsc B-Y INVERT
VCO/OSC
REC
APC
PB
KILLER
REC APC
AFC TANK
APC
SW
MESECAM
DET
HPF ENVDET
SW35
SW36
L-SECAM
:C-ACC:ON
+ MIX LEVEL
CHROMA
C.K
ACC ADJUST
DET DET
L-SECAM
B.E
C-ACC:THROUGH REC
L-SECAM SW39
TRAP
LPF
:ON SP2
SP2
SW42 SW44
CH2
SW34 SW37 L-SECAM
FH HPF
CH1
CTL TRAP REC
P R
TRAP SP1
SW45
:OFF
SP1
+ REC
VC
C REC TRAP
MUTE
DELAY
HiFi TRAP
SW46
SW40
SW41
EXT
SP
2MLPF
INT
SP2
SP
57 PIN
EXT SW43 SP2 SW47
3.3k ADD
CH2
SW38
P
CH1
ACC INT
EXT
R
SD SP1 SW48
SW25 SW8
SP1
HPF
P
SD SW9
SQPB
629 SW49
DL TRAP
R
SQPB
SQPB
REC
P-EQ
SW12 FILTER
LPF S-DET
G-EQ FM AGC
FM MOD
DO DET
DET
FO/DEV ADJ
DLIM
SW11
P
MAIN EMPHASIS
CARRIER OFFSET
DEMO R
W.C/D.C
SUB LPF
SW10
REC FBC+ALC
PB AGC+APL
R
SW13
P
MAIN
DE EMPHASIS
16 12 14 10
IC1
WF1
( VIDEO & AUDIO
SIGNAL PROCESSOR )
CN7505
10 5
CN201 10 5
1 7 ON SCREEN
IC201
(ON SCREEN)
CN7505 CN201
15 8
11 3
CVin SYNC_DET
9
CS1
13 10
13 5
CVout SCLK
11
SIN
2 3
2 1 XTALin MUTE
WF6 IC1-86
REC 1.3Vp-p
0.5V/20µsec/DIV
TO
FMA/DEMOD
Fsc
WF5
TP111
TO
D. FF
SYSCON
80
D. FF
D.FF
81
NOT
TO
82
USED
SYSCON
83
VIDEO_ENV
85
VIDEO
86 HEAD
CN1
6
87 SP CH2
5
SP CH1
WF6
4
3
LP/EP_CH2
89
2
LP/EP_CH1
1
90
91
TO
SYSCON
20
S_DET(H)
8
9
TO
SYSCON
SYNC_DET(H)
OSC_CS
S.CLK
S.DATA_FRSYS
P.MUTE_VHS(L)
8 7 3
8 7 3