14.3. DVD Servo Block DiagramIC6201(CPU)IC6301OPTICAL PICK UP UNIT(EEPROM)IC2001(DSC)TRSDRV-ATRSDRV-BTRACKING DRIVEFOCUS DRIVETRV-SWECRROTNRDTPRDCKNRDCKPTETBALFEFBALLDONBLDONAJIT OUTBDOOF TRECFGFGCSSBRKTRAY SET1TRAY SET2TRAY OPENTRAY CLOSEIC5202(FEP)VIN6VIN5VIN1VIN2VIN3VIN4SENSCKSTD1STNBYCPSENCPCENCPUIRQSBT1SBO1SB11DAT0DAT1DAT2DAT3DCOIC7001(ODC)IC2511 STEPPING MOTOR UNITOPTICAL PICK UP UNITSPINDLE MOTOR UNITLOADING MOTOR UNIT(MOTOR DRIVE)RF SIGNAL SPINDLE MOTOR DRIVE SIGNAL STEPPING MOTOR DRIVE SIGNAL TRACKING ERROR SIGNAL FOCUS ERROR SIGNALIC2501(SPINDLE MOTOR DRIVE)QR2502QR2503S2601HALL1LOAD M+LOAD M-TRAY OPENTRAY CLOSEM2601LOADINGMOTOR47 43949291959697424140483249282623606162633536383334509128209931398121817312281644465661213871819111610141916 12152527LASER DIODEPHOTO DETECTORA1 A2A3A4B1 B2B3B4HEADAMPQ5201LD DRIVEINTERFACE22201921527055725060767165223373145QR25013145107128121120111115114113112104105102103TRAVERSE SWITCHAMP FINRINBRKSSFGCFGECECR26 OPIN4-23 OPIN3-3 OPIN1-6 OPIN2-H3-H3+H2-H2+H1-H1+A1A2A3 M3M2M1H1+H1-H2+H2-H3+H3-TRV-SWACT F+ACT F-ACT T+ACT T-OUT1OUT2AMPAMPHALL254HALL3STEPPING MOTOR7VD3-VD3+VD4-VD4+VD1+VD1-VD2+VD2-616151413ACTUATORTRACKINGCOILFOCUSCOIL121111TRACKINGBALANCEFOCUSBALANCEAMP34MTC-15DT255