Toshiba 20A43 Service Manual page 25

A B
8
7
6
5
C1511
0.01 F
C1512
C1502
16V 100 YK
47P CH
R1501 BUFFER
D.VCC
Q1501
4 820
KTA1266 5.0
0
R1503
KILLER
0
0 0.6
2.7K
TEST
0
C1509
BIAS1
1.3
0.01 B
ADin
2.7
C1508
VRT
2.9
0.01 B
C1510
VRB
2.3
0.01 B
3
A.VSS
0
COMB FILTER IC
IC1501
W854 TC90A45F
2
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
1
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
A B
G-9
C D
COMB/FILTER SCHEMATIC DIAGRAM
C1523
0.01 F C1514
10V 100 YK
BUFFER
Q1502
KTC3198
R1508
2.8 4.9
1K
0
D.VSS
0
C1515
CKin
2.5
100P CH
V.FIL
2.1
R1516 R1517
4.9 2.9
C1516
BUFFER
BIAS3 150 330
3.4 Q1505
0.01 B
3.5
KTC3198
R1504 L1503_1 R1522
C.OUT
100 10uH 5.6K
3.7
C1517
BIAS2
1.5
0.01 B
R1505 L1504 C1526_1
Y.OUT
100 15uH 47P CH
4.2
A.VDD
5.1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C D
E
(MAIN PCB)
W824
E
F G
FROM/TO MICON/CHROMA/TUNER
GND
STEREO+5V
FSC
C_IN
Y_IN
P.CON+8V[B]
FROM AV
VIDEO
GND
TUNER VIDEO SIGNAL
LUMINANCE SIGNAL
COLOR SIGNAL
F G
H
8
7
6
5
4
3
2
PCB010
TMC563
1
H
G-10