JVC HR-S9850EK, Service Manual

Page: 68 / 90

4-49 4-50
4.28 VIDEO BLOCK DIAGRAM
PRE LPF DIGI
Y/C IN
V3/V4
)
SWITCH
(Y/C
IC501
56
1
ATT
2
AGC DET
S.SEP
AT
T
PB
Y1 Y3
3 4 5
ATT
Y2
54
53
51
52
50
49
48
47
COMP IN
AGC
REC
GCL
ATT
CLAMP
V5
EXT PB C
EXT PB C
PRE LPF
PB REC
EXT PB
Y
ATT
USED
ATT
S1/S2 DET
6 7 8
NOT
C3 C1
C2
V3
9 10 11 12 14
ATT
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
ATT CLAMP
USED
NOT
17
18
20
19
CLAMP
FILTER FILTER
23
24
25
DIGI/PB
43
45
PRE LPF
CLAMP
PRE LPF
42
CR
ADJ
41
PB
EXT PB Y
DIGI/PB
ATT
REC
IIC LOGIC
39
CLK
40
DATA
38
+
S-SUB 1 5
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
16
PB REC
NON LINEAR
PROCESSOR
6
5
PB
REC
SP
SP
10
11
12
EQ
EQ
8
10
12
14
2
4
6
CN512
V_FROM_OSD
C_OUT
Y_OUT
REAR2_C_IN
REAR2_Y_IN
REAR1_C_IN
REAR1_Y_IN
36
37
38
39
34
35
33
IC502
SVHS-ET S-VHS
1
2
(
EE(L)
&
18
SP
SP
17
SWITCH)
EQ
EQ
10
30
23
25
26
27
29
16
21
22
20
18
17
13
15
12
11
9
4
3
2
CN511
16
REAR2_V_IN
V_TO_OSD
CHARA_DATA
Y_TO_AV
V_FROM_AV
REC_COLOR
32
27
28
29
31
30
Y_FROM_DIGI
C_FROM_DIGI
PB_COLOR
MAIN_ALC_DET
P.MUTE(L)
Y_TO_SUB
FRONT_Y_IN
FRONT_C_IN
FRONT_V_IN
21
SECAM_PB_COLOR
20
25
26
24
23
22
19
17
18
I2C_DATA_A/V
I2C_CLK_A/V
Fsc
C_TO_DIGI
Y/V_TO_DIGI
14
15
13
12
USED
NOT
USED
NOT
USED
NOT
Y
C
Y
C C
Y
C
Y
Y
C
C
Y
C
Y
Y
Y
C
Y
C
Y
C
Y
Y
Y
Y
C
Y
C
Y
Y
Y
Y
C
C
C
C
Y
C
Note : For the waveforms in this block diagram, refer to page 4-43.
WF11
WF12
WF14
WF13
WF8
WF7
WF9
WF10
WF1
WF2
WF3
WF4
WF5
WF6
FROM_PS_C
TO_PS_C
TO_PS_Y
FROM_PS_Y
9
7
5 3
WF4
WF3
WF2
WF1
C
C
C
C
C
C
Y
Y
Y
C
C
Y
YVIN FSCIN
IC1401
BPF BUF
com/CNR PS
REC
PB
24 29 31
CIN
REC PB
COMB 3L
PB
BPF
Q1418
BUF
BUF
Q1417
LPF
19
17
BUF
Q1406
(Y/C SEP & MIX )
REC
0 5
COUT
Q1402
3D/TBC(2M)
YOUT
Y COMB
SDATA
SCLK
11
12
1
3
5
7
9
12
14
15
11
4
5
3
2
1
6
8
V.REF
D.FF
I2C_DATA
I2C_CLK
C_FROM_DIGI
Y_FROM_DIGI
V/Y_TO_DIGI
9
10
C_TO_DIGI
Fsc
CN1401
7
8
DFFI
VR
6 7
EE(L)
Q1404
Q1414
ES
LPF
VREF
21
VR1401
D/A LEVEL ADJ
1 11
EE(L)
VR3505
14
R-Y LEVEL
ADJ
VR3506
B-Y LEVEL
ADJ
3
ENCODER
B-Y
PAL
IC3506
R-Y
C OUT
1
Q3546
Q3544-
AMP
TP3501
B-Y
Q3543
Q3541-
AMP
16
(
P/S CONVERTER
3
1
2
H S-P( )/P-S
8 7
C OUT
SYNC IN
ENCODER
SECAM
IC3508
L)
18
29
B-Y
R-Y
3
1
12
11
IC3505
TP3502
R-Y
Q3505-Q3507
FL3501
EQ
/P-S 7 S-P (H)
2
Q3512-Q3515
FL3503
IC3509
3
1
EQ
14
IC3508
SW5V
(L)
12
Q3511
5
FL3502
EQ
11
Q3508-Q3510
FL3505,Q3540
LPF
BUF Q3520
B
Q3504
UF 3
1
/P-S
IC3515
COLOR
MUL
DECODER
DL
B-Y B-Y
R-Y R-Y
B-Y
1
3
16
14
R-Y
TI
C IN
15
( S-P H)
2
7
3
IC3502 IC3503
BUF
CONV'D
TP3504
COLOR
(L)
1
CN3502
5
7
Q3525
FL3506
<ANTI-BELL|
Only used for HR-S9850MS