Sony HCD-HPR90 Service Manual - Page 33

6-18. SCHEMATIC DIAGRAM - FL Board - • See page 36 for Waveforms. • See page 37 for IC Block Diagrams. FL901 FLUORESCENT INDICATOR TUBE HCD-HPR90/HPR99XM F1 F1 P16 P15 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 12G 11G 10G 9G 8G 7G 6G 5G 4G 3G 2G 1G F2 F2 C942 100p C941 100p C940 100p C939 100p C938 100p C937 100p C936 100p C935 100p C934 100p C933 100p C932 100p C931 100p 42 41 40 39 38 37 22 36 21 35 20 34 19 33 18 32 17 31 16 15 14 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 R925 0 R924 100 R923 100 R922 10k T921 INVERTER TRANSFORMER Q921 2SC4357 OSC Q922 2SC4357 OSC C927 0.1 D925 UDZSTE-176.2B C926 47 50V C925 0.01 D921 MC2840 D922 MC2840 4 1 5 9 R926 0 23 24 25 26 27 28 29 31 32 33 C922 0.01 L921 R921 2.2k C921 22 16V C903 100p C912 0.1 C913 22 16V SG9 SG8 SG7 SG6 SG5 SG4 SG3 SG2 SG1 VDD VSS SG10 SG11 SG12 SG13 SG14 SG15 SG16 VEE GR1 GR2 GR3 FLUORESCENT INDICATOR TUBE DRIVER IC901 PT6315 K2 K1 STB CLK DIN DOUT DSC LED4 LED3 LED2 LED1 C909 100p C908 100p C907 0.001 R911 100k R910 100k R909 100 R908 100 R907 100 R906 470k R905 100k R902 100 R901 100 +3.3V DGND FL STB FL CLK FL DATA LED DIRECT LED DSGX +6.2V DDC GND (Page 23) 34 GR4 35 GR5 36 GR6 37 GR7 38 GR8 39 GR9 40 GR10 41 GR11 42 GR12 VDD VSS C944 0.1 HCD-HPR90/HPR99XM 33 33