13.3. SERVO BLOCK DIAGRAMBIAS1BIAS2MUTECH1MUTECH3MUTECH2,4,5-+SHIFTLEVEL-++-+-SHIFTLEVEL-+-++-SHIFTLEVEL-++-+-+-SHIFTLEVEL-++-+-OPIN- 26OPIN+ 25SPINDLE MOTORTRAVERS MOTORIC6001-16,17PINFROM VIN37S2601CLOSE SW(OPERATION CPU)IC6001TRAY OPEN 2425TRAY CLOSETRAY MUTE 18OPOUT27AD14Vp-p(0.5msec./div.)IC8251-15,16,17,18RF SIGNAL MOTOR DRIVE SIGNAL TRACKING ERROR SIGNAL FOCUS ERROR SIGNALVIN1VIN5VIN4VIN2MUTE2MUTE1SPDRVFODRVTRDRVTRSDRVMUTE3VO5-VO5+VO4-VO4+VO1-VO1+VO2-VO2+837976752264311615181713141112SHIFTLEVEL-++-LOADING MOTORM2601VO3-VO3+910523(MOTOR DRIVE)IC8251ACT F-ACT F+ACT T-ACT T+OPTICAL PICK UP UNITACTUATORCOILTRACKINGCOILFOCUSRFINNRFINPLASER DIODE(CD) Q8561, Q8562LD DRIVEVIN4LPC01LPC1LPC02LPC2VIN3VIN2VIN1VIN8VIN7VIN6VIN5OPTICAL PICK UP UNITPHOTO DETECTORB3B4B2B1A3A2A4A1LASER DIODE(DVD)AMPHEADQ8551, Q8552LD DRIVE134(DV2)IC8001133132131138137136135VIN10VIN9 130129124123126125110111140148147DVD-S29EG/E/EBSERVO BLOCK DIAGRAMS2602OPEN SWDVD-S29EG / DVD-S29E / DVD-S29EB37