JVC SR-VS30U Service Manual

4-61 4-62
4.34 VIDEO BLOCK DIAGRAM (VHS)
Y
C
Y
C
C
Y
Y
C
C
Y
C
Y
Y
Y
C
Y
C
Y
C
Y
Y
Y
C
Y
Y
Y
C
C
Y
C
Y
Y
Y
C
C
Y
C
C
Y
C
Y
C
Y
C
Y
C
Y
C
C
Y
C
C
Y
PRE LPF
DIGI
Y/C IN
V3/V4
)
SWITCH
(
Y/C
IC501
56
1
AT T
2
AGC DET
S.SEP
AT T
PB
Y1
Y3
34
5
AT T
Y2
54
53
USED
NOT
51
52
50
49
48
47
COMP IN
AGC
REC
GCL
AT T
CLAMP
V5
EXT PB C
EXT PB C
PRE LPF
PB
REC
EXT PB Y
AT T
USED
AT T
S1/S2 DET
6
7
8
NOT
C3
C1
C2
V3
9
10 11
12
14
AT T
Y FBC
Y MUTE
D16
15
V FBC
N.C.
REC
V4
C.K.
PB*D15
BB
BB
BB
BB
PB
TRAP
CONV
VCA
PB*CONV
REC
CONV
21
V MUTE
C MUTE
BIAS
D7&D8
AT T
CLAMP
USED
NOT
17
18
20
19
CLAMP
FILTERFILTER
23
USED
NOT
24
25
DIGI/PB
43
45
PRE LPF
CLAMP
PRE LPF
42
CR
ADJ
41
PB
EXT PB Y
DIGI/PB
AT T
REC
IIC LOGIC
39
CLK
40
DATA
38
+
TERMINAL(S-SUB, I/O)06
CLAMP
REC
DIGI
PB*CONV
CONV
CONV
36
N/S-LPF
REC
PB
REC
PB
34 33
EE/PB
32
REC
EQ
REC
PB
CLAMP
PB
SP/EP
(
LP
)
VHS
S-VHS
31 30 29
28
27
USED
NOT
USED
NOT
C
YVIN
FSCIN
IC1401
BPF
BUF
com/CNRPS
REC
PB
24
29
31
CIN
REC
PB
COMB3L
PB
BPF
Q1418
BUF
BUF
Q1417
LPF
19
17
BUF
Q1406
(
Y/C SEP & MIX
)
REC
05
COUT
Q1402
3D/TBC(2M)
YOUT
Y COMB
S DATA
SCLK
11
12
7
8
DFFI
VR
LPF
VREF
21
VR1401
D/A LEVEL ADJ.
I2C_DATA_A/V
I2C_CLK_A/V
Y/V_TO_DIGI
Y_FROM_DIGI
C_FROM_DIGI
PB_COLOR
MAIN_ALC_DET
FRONT_V_IN
CHARA_DATA2
V_FROM_AV
REC_COLOR
I2C_DATA_A/V
I2C_CLK_A/V
C_FROM_DIGI
Y_FROM_DIGI
V/Y_TO_DIGI
V_TO_OSD
Y_TO_AV
Y_TO_SUB
P.MUTE
(
L
)
Fsc
C_TO_DIGI
C_TO_DIGI
Fsc
D.FF
V.REF
EE(L)
EE(L)
V_FROM_OSD
FRONT_Y_IN
C_OUT
Y_OUT
D_DUB_C_IN
D_DUB_Y_IN
TO_PS_C
TO_PS_Y
38
Y_FROM_S.E
Y_TO_S.E
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
15
14
13
12
11
16
17
9
8
7
6
5
10
4
3
2
1
CN504
CN1401
15
2
CN505
CN506
CN502
14
12
11
9
7
6
5
3
1
7
8
1
3
10
12
4
1
2
1
4
5
6
7
2
6
8
10
12
2
4
14
15
11
9
10
8
USED
NOT
USED
NOT
USED
NOT
ES
Q1419
Y
3
4
2
C
1
S_IN
J901
V_IN
J904
V1_OUT
J907
V2_OUT
J910
C.BOX
ONLY USED FOR HR-DVS3U/SR-VS30U
J913
2
1
Y
3
4
2
C
1
S1_OUT
J902
Y
3
4
2
C
1
S2_OUT
J903
2
342
768
2
1
1
2
1
3
CN503
1
3
5
7
9
R_V_OUT
S_Y_OUT
C.BOX/SAT_CTL
S_C_OUT
FRONT_C_IN
43
42
41
40
39
IC901

JVC SR-VS30U Specifications

General

Brand	JVC
Model	SR-VS30U
Category	VCR
Language	English