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4-49
4-50
VIDEO BLOCK DIAGRAM
H
G
F
E
D
C
B
A
4
5
3
2
1
4.25
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
32
33
34
35
30
31
29
LPF
BUF
IC502
SVHS-ET
S-VHS
1
2
(
EE(L)
&
18
SP
SP
17
SWITCH)
EQ
EQ
Y
19
YVIN
FSC_IN
CIN
10
5
REC
PB
BUF
Q1206
BPF
COMB
PB
BUF
Q1205
10
30
23
25
26
27
29
16
21
22
20
18
17
13
15
12
11
Q1203
9
4
3
2
CN511
1
3
5
7
12
11
9
BPF
com/CNR
3L
Y/C
PS
IC1201 (
COUT
YOUT
IIC_DATA
IIC_CLK
PB
COMB
REC
REC
44
41
35
34
&
SEP
MIX )
0
5
BUF
Q1202
DIGITAL
2D
CN1201
12
REAR2_V_IN
V_TO_OSD
CHARA_DATA
Y_TO_AV
V_FROM_AV
REC_COLOR
28
23
24
25
27
26
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
17
SECAM_PB_COLOR
16
21
22
20
19
18
15
13
14
I2C_DATA_A/V
I2C_CLK_A/V
Fsc
C_TO_DIGI
Y/V_TO_DIGI
10
11
9
8
I2C_DATA_A/V
I2C_CLK_A/V
C_FROM_DIGI
Y_FROM_DIGI
V/Y_TO_DIGI
C_TO_DIGI
Fsc
7
5
6
4
1
2
3
USED
NOT
USED
NOT
USED
NOT
Y
C
Y
C
C
Y
C
C
C
Y
Y
C
C
Y
C
Y
Y
Y
Y
Y
C
Y
C
Y
C
Y
Y
Y
Y
C
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 4-41.
WF11
WF12
WF14
WF13
WF8
WF7
WF9
WF10
WF1
WF2
WF3
WF4
WF5
WF6
R-Y
B-Y
COLOR
MULTI
DECODER
B-Y
12
R-Y
11
16
14
R-Y
B-Y
DL
ENCODER
C OUT
B-Y
3
PAL
R-Y
1
14
R-Y LEVEL
ADJ
B-Y LEVEL
ADJ
AMP
AMP
8
7
CONVERTER
FROM_PS_C
TO_PS_C
TO_PS_Y
FROM_PS_Y
9
7
5
3
BUF
EQ
AMP
BUF
IC3506
IC1605
VR1602
Q1610-
Q1612
S-P
VR1601
Q1607-
Q1609
IC1606
9
10
16
9
7
5
3
CN1601
Q1614
SYNC
SEP.
24
IC1601-
IC1604
Q1601-
Q1603
Q1605
WF1
WF2
WF3
WF4
Y
C
Y
C
C
C
C
C
C
C
Y
Y
CVBS
www.freeservicemanuals.info
3/3/2019
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