A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
IC751
TC90A45P
COMB FILTER
1
10
11
12
13
14
15
16
2
3
4
5
6
7
8
9
L752
15uH
L753
15uH
RECORD COLOR SIGNAL
RECORD LUMINANCE SIGNAL
L755
100uH 0305
L751
100uH
0305
L758
100uH
0305
TUNER VIDEO SIGNAL
Q752B
2SA1037AK
BUFFER
Q753
2SA1037AK
BUFFER
C751B
220
6.3V
KA
C765
0.47
50V
KA
C785
220
6.3V
YK
C783
2.2
50V
KA
C786
0.01 B
C779B
0.1 B
C773
180P
CH
C752
0.01
B
C770
0.1
B
C759
0.01
B
C755B
0.01
B
C763
0.01
B
C756
56P
CH
C793
0.1 B
C790
0.1 B
C760
0.01
B
C768
0.01
B
C764
0.01
B
C771
56P
CH
C774
100P CH
C766
22P CH
C762
47P
CH
C758
27P CH
C769
0.01
B
R754
180
R759
47
R755B
820
R757B
680
R760
1K1/4W
R761B
1K
R753
6.8K
R773B
6.8K
R751B
100
R752B
100
1/4W
R756B
820
R775B
820
R763
2.2K
R762
100
C775
220
6.3V
KA
Q751B
2SC2412K
BUFFER
Q754
2SC2412K
BUFFER
W858
W863
W831
W830
W832
W829
THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
NOTE:
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
PLAYBACK VIDEO SIGNAL
MONITOR_V
P.CON+9V
P.CON+A5V
GND
FSC
COMB_C_OUT
COMB_Y_OUT
PCB250
(AV PCB)
COMB FILTER SCHEMATIC DIAGRAM
FROM/TO AV SW
49
COMB FILTER
DYNAMIC
BPF
BPF
1/2
DAC
PLL
SYSTEM CLOCK
D.VCC
D.VSS
V.FIL
BIAS3
BIAS2
A.VDD
VRB
A.VSS
VRT
TEST
BIAS1
MEMORY
1H LINE
CLAMP ADC
KILLER
COLOR
BPF
DAC
0
5.1
1.5
3.9
3.5
2.3
0
5.1
0
1.2
2.9
2.3
0
FROM/TO POWER
2.2
1.6
0
2.3
2.3
2.2
2.6
5.2
1.9
4.8
5.2
1.6
4.8
2.0
1.4
VIF/SIF/CHROMA
FROM/TO
51
50
TMA503