SLV-478/677HF/678HF/688HF/L47/L48/L57/
L58/L67HF/L68HF/L77HF/L78HF/X50/X60HF
3-2. VIDEO BLOCK DIAGRAM
3-3 3-4
VIDEO
LINE 2 IN
JK-161 BOARD (1/2)
3
IC260
SP
CH1
DRUM
VIDEO
HEAD
10
7
SP
CH2
6
9
EP
CH1
8
13
EP
CH2
12
2
5
6
13
14
10
SW7 SW3
SW8 SW4
SW10
SW6
SW9 SW5
4
SW1
12
SW2
30
REC
IDEL
DET
REC
ADJ
HPF
ENV
DET
LOGIC
C ROT
C SYNC
CLOCK
RF SWP
26
28
17
20
19
18
21
22
BUFFER
Q260
16
29
SW5V
L263
L262
VCA
REC
REC
COMP
PB
PB
PB
PB
VIDEO REC/PB AMP
66
C ROT
SEQ
PB
EQ
15
PB Y/C
R
P
S
N
17
BUFFER
TRAP
20
S
N
Q202
14
KIL
C
LPF
R
P
ACC
AMP
MAIN
CONV
SUB
BPF
SUB
CONV
BPF
2
FM
AGC
SUB
LPF
DOUB
LIM
DEM
R
P
16
18
REC RF
REC
EQ
FM
MOD
DE
ENH
25
DE
EMPH
Q208
26
CLP
ACC
DET
R
P
BPF
1
DL
EQ
50
48
1
3
1H/2H
DL
+ 13
Q210
52
IC202
COMB FILTER
LPF
COMB
TH
PB
BGA-B
REC
BGA
PB
BGA-B
R
P
R.A
B
PB C
KIL
B.D
NAP
FSC
BPF
46 45
44
CLP
28
CLP
32
CLP
30
34 35
VIDEO
AGC
22
+
AGC
DET
R
P
R
P
C
NC
N.L
DE-EM
DHP
NC
PIC
CTL
Y/C
MIX
FBC
SYNC
SEP
37
1/2
R
P
LPF YNR
QV/VH
INS
VIDEO
AMP
33
38
42
40
CLP
5
1H
DL
7
10
BUFFER
BUFFER
Q209
KIL
DET
61
PB APC
DET
51
REC APC
DET
54
VCO
AFC
DET
49
SLD
VXO1
X202
3.57MHz
56
55
1
2
3
BUFFER
Q501
9
V IN
S IN
12
V OUT
3
CS
4
2
CLK
DATA
BUFFER
Q502
BUFFER
Q560
CS
S OUT
S CLK
X501
2019
QVD
1
1
CN260
CN423
L2 VIDEO
CN801
CJ801
VIDEO
LINE 1 IN
CJ570
RP
RF VIDEO
C SYNC
S CLK1
RF SWP
TU V
8
IF702
84IC160
65IC160
67IC160
18
IC160
IC160
VIDEO
LINE OUT
CJ570
RF
VIDEO
5
TU701
70IC160
68IC160
64IC160
13IC160
MA-317 BOARD
CN261
REC CURR
PB RF
RF SWP
IC201
(1/2)
Y/C PROCESSOR
IC202
1H DELAY
BUFFER
Q211
IC501
CHARACTER GEN
47
36
SW5V
L204
(2/2)
(1/2)
S OUT1
TO/FROM
SYSCON
BLOCK
FROM
TUNER
BLOCK
PB RF
DATA
REC RF
11
11
FOR
CHECK
8
11
Y VCC
C VCC
PB:ON
PB:ON
FROM
SYSCON
BLOCK
TO
TUNER
BLOCK
IC260 4 REC
1V/Div
0.1µsec/div
IC260 #º REC
0.5V/Div
0.1µsec/div
IC260 @• REC
20mV/Div
0.1µsec/div
IC260 @™ PB
200mV/Div
0.1µsec/div
IC260 !• REC/PB
2.4Vp-p
H
CN261 3 REC/PB
5Vp-p
30Hz
IC260 !¶ REC/PB
5Vp-p
30Hz
IC201 #¶ REC/PB
4Vp-p
H
IC201 $∞ PB
500mVp-p
H
IC201 #∞ REC
1Vp-p
H
IC201 @• REC
1Vp-p
H
IC201 #• REC/PB
2Vp-p
H
IC201 %§ REC
3.579545MHz
550mVp-p
IC201 %§ PB
3.579545MHz
500mVp-p
IC201 $• REC
IC201 %º REC
0.23Vp-p
H
IC201 $• PB
IC201 %º PB
340mVp-p
H
IC201 @∞ REC
0.5Vp-p
H
IC201 !¶ PB
200mV/Div
0.1µsec/div
IC201 !∞ PB
200mV/Div 0.1µsec/div
CN261 2 PB
200mV/Div 0.1µsec/div
CN261 1 REC
IC501 9, !¡ REC/PB
2Vp-p
H
688HF,L57,L58,L77HF,L78HF,X50 MODEL
(SEE PAGE 4-24)
(SEE PAGES 4-6, 8)
(SEE PAGE 3-10)
(SEE PAGE 3-5)
(SEE PAGE 3-5)
(SEE PAGE 3-9)
7.15909MHz
BUFFER
Q201
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
To Next Page
Loading...
