Sony HCD-C990 Service Manual - Page 76

HCD-C770/C990 • IC Block Diagrams - RF Board - IC001 CXD1881AR RFDC RFSIN ATOP ATON AIN AIP VPA RFAC BYP DIN DIP FNP FNN VNA MEV RX 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 DVDRFP 1 DVDRFN 2 A2 3 B2 4 C2 5 D2 6 CP 7 CN 8 D9 C 10 B 11 A 12 CD D 13 CD C 14 CD B 15 CD A 16 INPUT SEL ATT 4 MUX ATT 2 INPUT IMPEDANCE SEL BUFFER COMPARATOR GCA EQ INPUT BIAS AGC 2 INPUT IMPEDANCE SEL + CLAMP & - ENVELOPE PROGRAMMABLE EQUALIZER FILTER DIFFERENTIATOR AGCO 2 SIGDET LEVEL DAC + - PHASE -- DETECTOR + + PHASE DETECTOR OUTPUT FULL WAVE INHIBIT RECTIFER FROM S-PORT FAST ATTACK AGC CHARGE PUMP AGC HOLD CONTROL SIGNALS TO EACH BLOCK SERIAL PORT REGISTER 3 CE ATT LPF ATT POL SEL CEPOL BUFFER V33 FOR OUTPUT BUFFER PI FE TE CE V25 V125 V25/3 MNTR CONTROL 48 SDEN 47 SDATA 46 SCLK 45 V33 44 LCP 43 LCN 42 MNTR 3 3 FROM FROM VC S-PORT S-PORT TOPHOLD TOPHOLD - + OFFSET CANSEL GCA 4 FROM S-PORT 41 CE D A+D + C + GCA + B + B+C A MUX CD/DVD 3 FROM S-PORT B+D + + GCA W/LPF 3 FROM S-PORT SUM AMP + + A+C - GCA + GCA 3 4 FROM FROM S-PORT S-PORT VCI FOR SERVO INPUT VC = VPB/2 DUAL APC LD H/L FROM S-PORT - + GCA 4 FROM S-PORT MGCUAX GLCPAF CD/DVD CP/CN LOW IMPEDANCE + + GLCPAF GLCPAF OFFSET CANSEL GCA 5 FROM S-PORT GSUCAB CEFDB OFFSET CANSEL 6 FROM S-PORT GCA TE RST 3 FROM S-PORT OFFSET CANSEL 5 FROM S-PORT FOR SERVO PH OUTPUT HOLDEN V25/2 SEL BCA DET TOP HOLD COMPA- RATOR - FROM 2 S-PORT DAC + GSCELA 40 FE 39 TE 38 PI 37 V25 36 V125 35 TPH 34 DFT 33 LINK HYSTERESISTER LINKEN & OFFSET APC SEL DVD/CD FROM S-PORT MIRR COMPARATOR INPUT GAIN FROM S-PORT INPUT 2 IMPEDANCE FROM S-PORT 2 AGCO SINK CURRENT 2 FROM S-PORT BOTTOM ENVELOPE PH INTERNAL FDGHG PEAK/BOTTOM HOLD INPUT BUFFER MUX 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 CD F CD E VPB VC DVDLD CDLD DVDPD CDPD VNB LDON MIRR MP MB MLPF MIN MEVO 76