Toshiba 20AF41 Service Manual - Page 25

A B C D E F COMB FILTER SCHEMATIC DIAGRAM 8 (COMB FILTER PCB) 7 G H 8 7 15 16 17 18 19 20 21 22 23 24 25 26 27 28 6 FROM/TO AV CP901 6035B-06Z002-T 1 +9V 2 FSC 3 GND 4 C 5 Y 6 VIDEO CP902 6035B-03Z002-T 1 GND NC 5 2 GND NC 3 GND NC L912 15uH R929 1K C946 50V1 KA C905 16V10 KA C948 0.01 B R903 12K R922 1K C968 16V10 KA BUFFER R923 Q903 2SA1037AK 680 6.4 3.5 0 L904 22uH W809 R924 1.8K W805 4.5 5.1 BUFFER Q904 0 2SA1037AK 34 R917 10K C938 22P CH C945 39P CH COMB+5V IC903 KIA78L05BP-AT IN 3 9.0 GND OUT 2 1 0 5.0 W828 W806 C915 0.01 B C909 6.3V 100 KA C914 0.1 B COMB FILTER IC901 TC90A53F 1 1.5 VREFL VSS4 0 2 0 VSS1 VDD4 5.0 3 5.0 VDD1 VREF1 3.0 C941 16V10 KA C942 0.1 B R935 8.2K C949 16V10 KA C950 0.01 B R939 820 C955 68P CH R952 560 R958 1.2K 6 C969 0.1 B W810 L910 R964 R943 12K R951 560 15uH BUFFER 1K Q906 35 9.0 2SC2412K 4.3 AMP Q907 2SC2412K 9.0 AMP 8.7 Q909 2.1 R940 560 L907 27uH C953 16V47 KA R948 100 8.7 4.5 2.0 R955 2SA1037AK 1.6 9.0 1.6 BUFFER Q911 2SC2412K 5 100 R949 6.8K R944 C960 47P CH R941 3.3K C952 22P CH 560 1.1 R963 R965 8.9 0.8 BUFFER Q912 220 100 2SA1037AK 0 R962 1K C957 12P CH L908 18uH C958 12P CH R936 12K C943 0.01 B C901 10V100 KA C902 0.01 B C903 6.3V 100 KA C904 0.01 B 4 C916 4 3.5 VREFH YOUT 4.3 L909 4 0.01 B 15uH R945 12K R953 560 R959 100 5 2.8 ADIN BIAS2 1.6 C939 R968 470K C936 0.01 B C913 0.0047 B 8 7 6 1.3 BIAS1 3.2 CLAMPC 0 TEST1 COUT 4.0 BIAS3 3.5 VSS3 0 0.01 B C940 0.01 B 36 9.0 BUFFER Q908 4.0 2SC2412K AMP Q901 8.9 AMP 8.7 Q910 2SA1037AK 2.2 R938 W808 C954 2SC2412K R947 8.7 3.5 560 0.01 B 100 4.5 2.4 R956 9.0 BUFFER Q905 3.5 2SC2412K C947 16V10 KA C944 0.01 B R918 10K C937 0.01 B R957 47K L903 15uH L905 15uH C962 16V10 KA C963 0.01 B R937 820 C951 22P CH C961 12P CH R942 3.3K R946 6.8K R901 2.5 1/2VDD VDD3 5.0 1K 2.5 10K 3 C906 0.001 B 5.0 BUFFER Q913 2.5 2SC2412K 0.1 C910 R921 1.7 C911 0.01 B 820 180P CH C907 2.5 VFIL CKIN CORING 0 1LINE 0 R931 100 R932 R954 560 R960 1.2K R919 1K R961 1K C970 3 0.1 B 0.001 B 100 5.0 VDD2 VENH1 5.0 R928 100 R930 100 1/4W 14 13 12 11 10 9 C908 16V10 KA C912 0.1 B R966 47K R967 6.8K 0 VSS2 0 KILLER VENH0 5.0 CBPF 0 R970 100 2 2 PCB330 TEXA48 1 NOTE: THE DC VOLTAGE AT EACH PART WAS MEASURED NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. A B C D E F 1 G H