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5-1.
BLOCK DIAGRAM – VIDEO Section –
J1801
VIDEO
VIDEO AMP
CLAMP
INPUT
Q104, 123
Q124
RV102
Y/C SEPARATION
CHROMA LEVEL
RV103
Y/C SEPARATION
Y LEVEL
CJ1801
Y SIGNAL
S VIDEO INPUT
SELECT SWITCH & VIDEO AMP
IC102
3
1
Y
3
1
C
4
2
2
5
4
(ON: PLUG IN)
CHROMA SIGNAL
SELECT SWITCH & VIDEO AMP
IC101
3
1
2
5
4
• SIGNAL PATH
: COMPOSITE VIDEO
: Y SIGNAL
: CHROMA SIGNAL
R-Y
: R-Y SIGNAL
B-Y
: B-Y SIGNAL
05
SECTION 5
DIAGRAMS
Y/C SEPARATOR
IC105
AYO 31
25
AD IN
ACO 39
41
CVRF
33
YVRF
10
11
LOW-PASS
Y AMP
7
FILTER
Q107
FL102
BAND-PASS
CHROMA
7
AMP
FILTER
Q109
FL101
VIDEO ENCODER
IC103 (2/2)
Y OUT
16
R-Y
MODULATOR
C OUT
+
15
B-Y
MODULATOR
PULSE
GENERATOR
5-1
Y/C MIX
IC103 (1/2)
Y IN
C VIDEO
18
OUT
J1802
Y/C
VIDEO
20
C IN
MIX
AMP
OUTPUT
17
LOW-PASS
FILTER
FL105
R-Y
LOW-PASS
FILTER
FL106
B-Y
LOW-PASS
FILTER
FL107
1H DELAY
R-Y/B-Y DECODER
IC250
IC108
RV250
1H DELAY
25
VIDEO
AMP
5
C IN
C OUT
3
1 IN
OUT 3
Q251
CLK IN
5
CT250
1H DELAY
12
CT102
FREE-RUN
FREQUENCY (1)
CLOCK BUFFER
Q113
Y IN
Y BUFFER
CLAMP
4
Q101
R-Y
R-Y IN
R-Y BUFFER
CLAMP
2
Q102 (1/2)
B-Y
B-Y IN
B-Y BUFFER
CLAMP
3
Q102 (2/2)
XO IN
PHASE
6
OSC
CT103
SHIFTER
ENCODER
XO OUT
5
4.43MHz
X102
4.43MHz
C SYNC IN
10
YMCK 37
MCKO 17
VSIN
AFC
5
LOW-PASS
IC401
FILTER
9
VCIN
AFH 27
Q401, 416
WEVN 32
23
15
16
CT410
RV404
910fh
A/D IN
Y LEVEL
Y AMP
Y BUFFER
CLAMP
Y BUFFER
Q403
Q407
Q410
Q412
RV405
A/D IN
R-Y LEVEL
R-Y
CLAMP
R-Y AMP
R-Y BUFFER
R-Y BUFFER
Q406
Q408
Q411
Q404
B-Y
B-Y AMP
B-Y BUFFER
CLAMP
B-Y BUFFER
Q402
Q405
Q409
Q413
B-Y
R-Y
24
HD
LOW-PASS
R-Y
BUFFER
R-Y IN
FILTER
16
R-Y OUT
DEMODULATOR
Q252
FL250
FL251
14
B-Y IN
B-Y OUT
B-Y
AMP
Q250
10
4
11
X101
17.73MHz
RV106
RV105
HUE LEVEL
A/D IN
B-Y LEVEL
CHROMA LEVEL
5-2
90 ECK
VD 26
88 EVD
89 EHD
91 EEVN
2
A/D, D/A CONVERTER,
MEMORY BUS CONTROL
IC402
IC407 (1/2)
4
64 Y IN
R-Y
82 V IN
B-Y
73 U IN
R-Y
20
19
B-Y
RV401
D/A OUT
26 VREF1
Y LEVEL
RV402
D/A OUT
33 VREF2
40 VREF3
29 Y OUT
R-Y
43 V OUT
B-Y
36 U OUT
SYCX
20
50
CGEEX
Confidential
DMP-1000P (AEP)
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