Sony 757MX Service Manual - Page 20

CDX-757MX SECTION 6 DIAGRAMS 6-1. BLOCK DIAGRAM - SERVO Section - I-V AMP DETECTOR A B C D E F LASER DIODE PD LD VC OPTICAL PICK-UP BLOCK (KSS-720A) 2-AXIS DEVICE (TRACKING) (FOCUS) RF AMP, FOCUS/TRACKING ERROR AMP IC101 FILO CLTV PCO FILI FILTER 66 69 68 67 DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, D-RAM CONTROLLER IC101 RFAC SUMMING AC SUM 4 AMP 3 EQ IN RFAC VCA RF EQ AMP RFAC 15 71 RFAC ASYMMETRY CORRECTOR DIGITAL PLL EFM DEMODULATOR 6A 7B RFDC SUMMING AMP RFDCO 28 RF 73 ASYI 74 ASYO 8C DC OFST 30 RF AMP OFFSET CONTROL SWITCH 9D FOCUS ERROR RW/ROM FE 16 FE Q102 AMP D0 - D3 INTERNAL BUS D/A INTERFACE 32k RAM ERROR CORRECTOR 116, 115, 118, 117 DQ1 - DQ4 2, 3, 24, 25 10 E 11 F AUTOMATIC POWER CONTROL Q101 TRACKING ERROR AMP TE 18 TE RW/ROM SW 12 LD PD 1 APC AMP 2 27 VC DVC 14 A0 - A10 9 - 12, 15 - 19, 21, 8 D-RAM IC102 RAS 5 CAS 23 WE 4 OE 22 TE FE RF 63 59 58 62 60 61 A0 - A10 VIBRATION MEMORY CONTROLLER & COMPRESSION 113 XRAS 119 XCAS 114 XWE 120 XOE EXPANDER XRDE XWRE XQOK 109 - 106, 7 - 5, 3 - 1, 111 WDCK 1758 GFS 1851 DATA 1253 CLOK 125 XLAT 1254 SENS 1256 SE TE FE RFDC VC CE TRACKING/FOCUS COIL DRIVE, SLED/SPINDLE/CHUCKING MOTOR DRIVE IC201 OP AMP ANALOG SW SUBCODE PROCESSOR CPU INTERFACE SQSO 154 SQCK 15 SCOR 157 VO3 + VIN3 + 8 9 VO3 - MCOOTIOLR DRIVE 25 VIN3 - 24 VO4 + VIN4 + 6 7 VO4 - COIL DRIVE 31 VIN4 - 32 M101 M (SLED) 10 VO2 + VO2 - 11 MOTOR DRIVE VIN2 + 22 VIN2 - 21 TFDR 48 TRDR 49 FFDR 50 51 FRDR 46 SFDR SRDR 47 PWM GENERATOR SERVO DSP A/D CONVERTER MIRR DECT FOK SERVO AUTO SEQUENSOR XRDE 195 XWRE 185 XQOK 152 SERVO INTERFACE SCLK 27 FOK 35 M102 M (SPINDLE) M103 M (CHUHCKING) VO1 + 12 VO1 - 13 MOTOR DRIVE VIN1-B 18 VL0 + FWD 5 4 VL0 - MOTOR DRIVE 1 REV 2 MDP 43 DIGITAL CLV ON : When the optical pick-up is inner position 45 SW3 (LIMIT) SSTP XRST 21 ON : When completion of the disc chucking operation SW1 (CHUCKING END DETECT) ON : When completion of the disc save operation SW2 (SAVE END DETECT) DIGITAL OUT DOUT 185 PCMDI DAC 1859 PCMD 1858 SELECTOR BCK 1950 LRCK 1856 CLOCK XTAI 1953 GENERATOR XTAO 1954 X101 16.9344MHz CD-ROM/RW SELECT SWITCH Q202 D201 90 R/RW SEL 40 GRSCOR 5 GFS 10 CDDAT 8 CDCLK 9 CDLAT 7 SENS 84 SQSO 85 SQCK 38 SCOR 16 XRDE 17 XWRE 15 XQOK SYSTEM CONTROLLER IC201 (1/3) 6 SCLK 4 FOK 11 XRST 95 LOADF 96 LOADR 100 LIM SW 98 LOAD SW 99 SAVE SW SDO B (Page 21) SDI BCK LRCK A (Page 21) XTAL-IN C (Page 21) TCXRDE D (Page 21) SIGNAL PATH : CD PLAY 20 20