Video Block Diagram - JVC HR-S2901U Service Manual

4.19

VIDEO BLOCK DIAGRAM

MAIN ( S-SUB )
0 3
IC502
18
EQ
SP
17
SP
EQ
16
PB REC
12 NON LINEAR
PROCESSOR
PB
11
EQ
SP REC
10
SP
EQ
0 5 2D DIGITAL
IC1201 ( Y/C SEP & MIX )
34
IIC DATA
35
IIC CLK
REC
41
COUT
BPF
PS com/CNR
PB
REC
44
3L COMB YOUT
LPF
Y COMB
PB
REC PB
19 10 5 Q1205
Y
AMP
Q1204
C
BUF
1
ONLY USED FOR
J4
3
Y
HR-S5901U/S5911U/S5911U(C) REAR
4
C
2
S_IN
HR-S3901U/S3911U/S3911U(C)
1
J4
3
Y
REAR 4
C
2
S_OUT
ONLY USED FOR
HR-S5901U/S5911U/S5911U(C)
1
J7102
3
Y
FRONT 4
C
2
S_IN
1
2
EE(L)
5
6
CN1201 CN501
I2C DATA
12
I2C CLK
11
C FROM DIGI
C
9
Y FROM DIGI
Y
7
Q1202 V/Y TO DIGI
5
C TO DIGI
C
BUF 3
Fsc
1
BUF
Q1203
BPF
2 9 REAR
S JACK
FW7102 FW7101
REAR1_Y_IN
Y
4 4
REAR1_C_IN
C
5 5
Y_OUT
Y
1 1
C_OUT C
2 2
3 6 FRONT
S JACK
CN7108 CN7103
FRONT_Y_IN
4 1
FRONT_C_IN
2 3
Note : For the waveforms in this block diagram , refer to page 4-28.
WF8
WF9
C
+ NOT NOT
USED USED
WF10
42 41 40 39 38 36
CR
CLK DATA
ADJ
IIC LOGIC
PRE LPF
CONV
43 PB DIGI/PB
Y
CLAMP
REC REC CONV
PRE LPF ATT DIGI
WF11 PB*CONV
DIGI/PB
EXT PB Y
45 Y
PRE LPF DIGI
WF12
Y
47 CONV
C
PRE LPF
VCA
WF13
48 EXT PB C
C
PB
REC
WF14
EXT PB C
49
50
REC
NOT
USED 51
ATT
CLAMP
52
PB*D15
C.K.
53
GCL
V5
COMP IN
V4
REC
54
Y
AGC
V3/V4
Y/C IN V3
PB
C1 C3
AGC DET C2
S.SEP
56
Y
S1/S2 DET
Y
Y1 Y3
WF15
Y2
ATT ATT ATT
IC501
1 2 3 4 5 6 7 8
NOT
WF1
USED NOT
USED
WF2
4-33 4-34
Y
WF7
34 33 32 31 30 29
EE/PB SP/EP(LP)
VHS
CLAMP
S-VHS
REC 28
PB
PB
REC
27
N/S-LPF
CLAMP
EQ
PB REC
25
CLAMP
NOT
CONV
24 USED
REC
PB*CONV
23
FILTER FILTER
21
N.C.
ATT CLAMP
PB
TRAP
WF6
20
19
BB
D7&D8 18
NOT
BB BIAS
BB
USED
17
C
BB
D16
WF5
15
Y
WF4
ATT ATT
WF3
9 10 11 12 14
Q903
BUF
BUF
Q904
Y TO SUB
Y
a
MAIN ALC DET
b
PB COLOR
C
c
Fsc
d
REC COLOR
C
e
V FROM AV
f
Y TO AV
Y
g
FRONT V IN
h
V FROM OSD
i
I2C DATA A/V
j
I2C CLK A/V
k
REAR1 V IN
l
TO
SYSCON
CHARA DATA
V TO OSD
P.MUTE(L)
I2C CLK A/V
I2C DATA A/V