Philips_CDV-495_Schema电器原理图手册

PHILIESC▣V495CDM,SERVO AND MOTOR CIRCUIT DESCRIPTION FORCDV4951 CDM1.1 Mechanical parts1.1.1 Dismantling the carriage1.1.2 Mounting the carriage1.2 The light path1.3 Sigma PI board1.3.1 The laser supply1.3.2 HF amplifier1.3.3 EFM amplifier1.3.4 EFM level detector1.3.5 Focus error signal generation1.3.6 Radial error signal generation1.3.7 Tilt error signal generation with Tilt LED powersupply1.4 Adjustments1.4.1 a setting1.4.2 Y setting1.4.3 Grating setting1.4.4 Laser current setting1.4.5 Tilt error (TE)offset setting2 SERVICE SOFTWARE2.1 Start-up procedure2.2 Calling up the service mode2.3 On Screen Display2.4 Service info on the FTD2.5 Start-up phases with a CD(8 cm and 12 cm)orCDV clip disc2.6 Start-up phases with a CDV LP or CDV single3 SERVO CIRCUIT3.1 Servo-uP circuit3.2 Focus circuit3.3 Radial control circuit3.4 TPI correction circuit3.5 Tilt motor circuit4 MOTOR CIRCUIT4.1 DSCM2 circuit4.2 Tray motor circuit5 EXPLODED VIEW CDM6 EXPLODED VIEW LOADING7 DEMOUNTING OF THE LOADING8 CIRCUIT DIAGRAMS