Sony S530D manual Power on Mechanical Sequence No Disc

Page 39

	Power ON Mechanical Sequence – No Disc

	Operation	Purpose

1.	Power On button is pressed.	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.

2.	Disc tray is closed (if open) and placed into a	Clamps a disc on the spindle motor platform.
	chucked position.

3.	Sled moves the optical assembly to home position.	Sled starting point.

4.	Tilt Motor resets laser platform to mid position.	Presets the laser beam perpendicular to the disc for max RF.

5.	Sled moves outward quickly, then slows down.	Optical assembly is moving under the disc’s information area.

6.	Laser is turned ON momentarily during focus	Looks for a disc. Reflected light identifies a disc.
	search.

7.	Focus search one time.	Optical assembly lens moves up then down, looking for the disc’s
		information layer.

8.	Sled increases speed moving further outward.	Sled slows down in a second attempt to locate a disc.

9.	Sled slows down

10.	Laser is turned ON momentarily during focus	Looks for a disc using reflected light.
	search.

11.	Focus search.	Looks for the disc’s information laye.

12.	Sled again moves quickly outward then slows,	Third attempt to locate a disc.
	followed by laser and focus search.

13. Sled moves inward to home and stops.		Disc check at home position.

14.	Laser is turned ON momentarily.	Final attempt to identify a disc.

15. Focus search.

16.	Spindle motor rotates.	(laser is off)

17. Display reads NO DISC		User feedback

34

Image 39

Contents Course DVD-02 Course Description and Troubleshooting Page Table of Contents Processing Block Processing Laser Servo Test Mode KHM-220A DVD Optical BlockTroubleshooting Disc Identification Initial Sled Motor DriveDVD, LD, DTV Introduction to the DTS Audio FormatDVD, LD VHSChannel Receiver With DTS Decoder AC-3 Decoder What is DTS?What do I need to play the DTS surround format? CD/DVD PlayerAdaptive Predictive Coding Adpcm Can DVD movies contain both DTS and AC-3 audio tracks?How does DTS work? CompressionGlobal Bit Management MultiplexerPacker Compression BlockBoard Layout DVP DVD FeaturesServo Control Block DiagramPower Supply CommunicationsBlock Diagram ARP2 Video and Audio ProcessingBlock Diagram Power Consumption Power Supply BlockStandby Power Supply Main Power SupplyPower Supply Block Regulation Concept Standby OscillatorStart RunStandby Oscillator Enable Main OscillatorRegulation Main Oscillator Pcont Power ControlPlug IC201 IC202 Communications WaveformsPower Control Post Power on Check Power Control Communications Block Parallel DataSerial Data Communications Block EEProm IC201 Serial Data CommunicationsSerial Bus Interface IC201Serial Data Communications Audio DSP IC501 Serial Data Communications Parallel Data Communications Chip Select LineHGA IC601 Parallel Data Communication Communications from Another IC to IC202 Communications from IC202 to Other ICsParallel Data Communication No Power Tray Removal From the Bottom MechanismDisc Tray and Laser Platform Position No Power Tray Removal From the Top Tilt MotorSled Position Laser Focus CoilPower on Mechanical Sequence No Disc Power on Mechanical Sequence DVD Disc Page IC201 Communicates with System Control IC202 Tray Motor DriveInterface Controller IC201 Recognizes the Tray Button IC201 Turns On the DisplayTray Motor Drive Driver IC802 Translates the Command Tray Position Switch Returns Information to IC201IC202 Instructs Hybrid Gate Array IC601 Tray Motor Drive HGA IC601 Instructs Servo DSP IC701 Initial Sled Motor DriveInitial Sled Movement System Control IC202 uses HGA IC601Initial Sled Motor Drive Sled Still Sled Outward Servo DSP IC701 Issues Analog Commands to Driver IC802Initial Sled Motor Drive Home Position Detection Sled Driver IC802 Sends Voltages to the Stepper Sled MotorSled Drive Mute/Inhibit Initial Sled Motor Drive Servo DSP IC701 to RF Amplifier IC001 Communications Laser ServoSystem Control IC202 and HGA IC601 Communications HGA IC601 to Servo DSP IC701 CommunicationsLaser Servo KHM-220A DVD Optical Block DVD FocusCD Focus Three Laser Beams from One Laser TE +, TZC Photo DetectorsPage Disc Identification Sacd Disc TypeOperation Disc Identification Concept Focus SearchServo Focus System Control IC202 to HGA IC701 Focus DriveFocus Search Communications System Control IC202 to Servo IC701Focus Sdcps HGA IC601 to Servo IC701Focus Kick Mode Spindle MotorDVD Spindle Motor CLV PB Mode MDSMDP Spindle Motor Tracking Servo Track Counting in Pause or Picture JumpSystem Control IC202 Uses HGA IC601 Tracking Servo Following the Track IC Summary ChartSled Motor Drive PB Sled Movement to Another LocationSled Motor Drive PB ICs Involved Tilt ServoTilt UP Tilt to Mid PositionTilt Servo Power OFF Manually Driving the Tilt MotorDVD Playback Tilt Servo Audio/Video Processing Block Process Blocks RF Amp IC001 ProcessingProcessing Flash ROM IC205 Video Process CH34O Converters IC902, IC905 IC907CH78O CH12OAudio Processing Test Mode Test Mode AccessTests Test Mode Access Clearing Emergency Codes Additional Test ModeSelf-Diagnostic Function Customer Error Codes Video Level AdjustmentPage No Power on TroubleshootingNo DVD PB CD PB OK No DVD OSD logoNo Disc PB No DVD DL PB other discs PB OK