Sony HCD-C990 Service Manual - Page 51
Schematic, Diagram, Dvd Board 8/10
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7-20. SCHEMATIC DIAGRAM - DVD Board (8/10) - • See page 71 for Waveform. HCD-C770/C990 (NC) CN900 8P IN OUT CLK 2PIN RESET VPP VDD GND I/P-SEL (Page 52) DGND 6.5V (Page 53) (Page 63) CN005 19P 6.5V DGND ENB ENA KEY1 KEY0 KEY2 FDATA FCS SIRCS FCLK DGND DIMM DGND 5V STBY-LED POWER-SW LCS LCLR (Page 52) STANBY-SW ST-LED 5V D-SEN U5V SEN1C (Page 52) (8/10) JW903 0 Y1 Y2 Y3 Y4 A1 A2 (Page 50) Q903 2SC2712-GL -TE85L INVERTER R957 10k R955 10k D903 1SS355 R908 10k CS2 CS1 MUTEN MUTEG AMPRST DO RSTDIR DXST CSDIR DERR DPLOCK DGP9 BST DHACN HCS PM RSTDSP P-PWM DIGCLK DIGDI DDSPDO I2CCLK CQRST I2CDATA AMPCLK AMPDATA Y4 D5V (Page 53) C1 R907 3.3k R906 3.3k R918 820 R917 820 R959 1k R909 10k R911 100 R912 100 R913 100 C901 0.01 R914 100 R915 100 TP902 R916 100 TP901 JW900 100 R910 100 Y3 Y2 Y1 CS3 LT RSTAD X901 20MHz TP050 FB005 TP051 TP052 TP053 TP054 TP055 TP056 TP057 TP058 TP059 R069 0 R068 0 R065 0 R063 0 R058 0 R055 0 R053 0 R070 0 R052 0 EB EA K1 K0 K2 FDATA FCS SIRCS FCLK R047 0 DIMM TP060 TP061 TP062 TP074 TP075 FB006 R057 0 R056 0 R061 0 R062 0 LCS LCLR R948 10k R993 1k R946 10k R929 15k DRST OCP STPOW R932 10k R685 1k R899 2.2k AV2 FM AUMUTE Q900 DTA114EKA -T146 MUTING CONTROL R991 10k Q902 DTA114EKA -T146 MUTING CONTROL FMUTE R980 47k R979 47k C922 0.1 Q913 2SA1037AK DISC LOADING DETECT SIRCS R985 470k SYSTEM CONTROLLER IC901 mPD703033BYGF -M01-3BA I2H R922 10k SYNC 2FS/EX AV1 AV0 RDSC SIRCS R971 10k PSW DVDPW RDSD R935 R933 ∗ 10k EB R937 10k C921 100p EA R939 10k C908 100p K2 R941 3.3k C905 330p K1 R942 3.3k C906 330p K0 R943 3.3k C907 0.001 R944 10k R969 330 (C990) ∗ R935 4.7k (C990) 10k (C770:US,CND) (Page 52) C2 C3 C4 C5 C6 C7 R936 1k R926 100 R968 100 R967 100 TUN TUDI TCE TUDO TUCLK DIMM FCLK FDATA FCS LCS R965 10k R951 10k C913 0.01 R970 10k C914 0.01 R986 47k D904 1SS355 Q906 2SC2712-GL -TE85L SIRCS DETECT C917 0.1 R978 1k R977 22k R987 47k Q907 2SC2712-GL -TE85L WAKE UP DETECT C918 100p Q914 2SC2712-GL -TE85L DISC INSERT DETECT LCLR HPSW INIT RELAY PARA-DO2 IORST IOLAT1 IOCLK IODATAI R963 ∗ R981 ∗ (US,CND,AUS) ∗ R963 4.7k (US,CND) 2.2k (AUS) ∗ R981 1.5k (AUS) 4.7k (EXCEPT AUS) C923 0.1 R984 47k R983 D906 47k 1SS355 51 51 K0 R988 0 NC IN GND GND OUT GND NC KEY INPUT DETECT IC903 PST9126NL R989 0 K2 KEY INPUT DETECT IC904 PST9140NL IN GND OUT
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