Power On Mechanical Sequence - Dvd Disc - Sony DVP S530D Training Manual

Operation
1. Power On button is pressed.
2. Disc tray is closed (if open) and placed into a
chucked position.
3. Sled moves the optical assembly to home position.
4. Tilt Motor resets laser platform to mid position.
5. Sled moves outward quickly then slows down.
6. Laser is turned ON momentarily during focus search.
7. Focus search one time.
8. Sled stops moving when a disc Is identified.
9. Spindle motor rotates.
10. Laser is turned ON a second time.
11. Focus search.
12. Focus servo is turned ON.
13. Tracking begins.
14. Tilt motor servo starts.
15. Disc PB begins. Display shows elapsed time.
35
Power ON Mechanical Sequence – DVD Disc
IC202 retrieves start up program from Flash ROM IC205. After the
ICs are checked for basic communications, IC202 instructs Servo
IC701 to start the mechanical sequence. The servo parameters are
stored in EEProm IC201.
Clamps a disc on the spindle motor platform.
Sled starting point.
Presets the laser beam perpendicular to the disc for max RF.
Optical assembly is moving under the disc's information area.
Looks for a disc. Reflected light identifies a disc.
Optical assembly lens moves up then down, counting the number of
disc layers.
Rotates the disc.
To begin playback.
Focuses on the first information layer on the disc.
Maintains focus on the layer.
Keeps the laser beam at the information track's center.
Maintains high RF level.
Playback verification.
Purpose