Toshiba 20AF41C Service Manual page 25

A B
8
7
FROM/TO AV
6
CP901
6035B-06Z002-T
L912
1 +9V
15uH
2 FSC
3 GND
4 C
5 Y
C968
6 VIDEO
16V 10 KA
CP902
6035B-03Z002-T
1 GND NC
5
2 GND NC
3 GND NC COMB+5V
IC903
KIA78L05BP-AT
IN GND OUT
3 2 1
9.0 0 5.0
4
5.0
BUFFER
C906
3
Q913
2.5
2SC2412K
0.001 B
0.1
2
1
A B
C
COMB FILTER SCHEMATIC DIAGRAM
R929 C946
1K 50V KA 1
5.1
R923 L904
W809 W805
BUFFER 4.5
BUFFER
Q903
Q904
680 22uH
2SA1037AK
0 2SA1037AK
6.4
3.5
0
34
W828
COMB FILTER
IC901 TC90A53F
C915
1.5 0
VREFL VSS4
0.01 B
0 5.0
VSS1 VDD4
C909
6.3V 100 KA
W806
5.0 3.0
VDD1 VREF1
C916
3.5 4.3
VREFH YOUT
0.01 B
2.8 1.6
ADIN BIAS2
C936
1.3 4.0
BIAS1 COUT
0.01 B
R968
3.2 3.5
CLAMPC BIAS3
C913
470K
0.0047 B 0 0
TEST1 VSS3
R901
2.5 5.0
1/2VDD VDD3
10K
C910 R921
1.7 0
VFIL CORING
C911
0.01 B 820
C907
180P CH 2.5 0
CKIN 1LINE
0.001 B
5.0 5.0
VDD2 VENH1
0 5.0
VSS2 VENH0
0 0
KILLER CBPF
NOTE: 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.
C
D E
(COMB FILTER PCB)
L910
15uH
BUFFER
Q906
9.0
35 2SC2412K
4.3
2.1
R940
560
L909
15uH
C939
0.01 B 9.0
36 BUFFER
Q908
4.0 2SC2412K
2.2
C940
R938
0.01 B
560
R931
100
R932
100
R970
100
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
D E
F G
R964
1K
AMP
9.0
Q907 AMP
8.7
2SC2412K Q909
8.7 2SA1037AK
L907 C953 R948
4.5
1.6
BUFFER
9.0
27uH
16V 47 KA 100
Q911
2.0 R955
1.6 2SC2412K
560
R963 R965
1.1
0.8
220 100
AMP
8.9
AMP
Q910
8.7
Q901
2SA1037AK
2SC2412K
3.5
8.7
C954 R947
W808
4.5
0.01 B 100
BUFFER
2.4
9.0
Q905
R956
3.5 2SC2412K
1K
2.5
C970
0.1 B
F G
H
8
7
6
5
8.9
BUFFER
Q912
2SA1037AK
0
4
3
2
PCB330
TEXA48
1
H