Sony S530D manual Focus Coil, Laser

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Focus Coil

Voltage applied to the focus coil that is connected to the lens opposes a stationary vertical magnet. The force generated moves the objective lens up or down to focus the laser spot on the information layer of the disc.

F Coil Magnet

Lens

Protection Spot

33

Laser

A ribbon cable connects the laser assembly to its circuit board. A circuit board connector clamps the assembly’s ribbon cable. Free the cable from the connector by pulling the connector tabs on both sides 1mm to- ward the cable. The connector will slide out..

In this picture the left side of the cable is free from the connector.

Left connector Ribbon Cable unlocked

In a replacement laser assembly, a spot of solder is placed on the foils of the ribbon cable (see the focus coil picture) to protect the laser diode from static damage that will shorten its life. Remove the solder spot AFTER connecting the laser assembly cable to the circuit board.

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Contents Course DVD-02 Course Description and Troubleshooting Page Table of Contents Initial Sled Motor Drive Processing Laser Servo Test Mode KHM-220A DVD Optical BlockTroubleshooting Disc Identification Processing BlockVHS Introduction to the DTS Audio FormatDVD, LD DVD, LD, DTVCD/DVD Player What is DTS?What do I need to play the DTS surround format? Channel Receiver With DTS Decoder AC-3 DecoderCompression Can DVD movies contain both DTS and AC-3 audio tracks?How does DTS work? Adaptive Predictive Coding AdpcmCompression Block MultiplexerPacker Global Bit ManagementBoard Layout DVD Features DVPCommunications Block DiagramPower Supply Servo ControlBlock Diagram Video and Audio Processing ARP2Block Diagram Main Power Supply Power Supply BlockStandby Power Supply Power ConsumptionPower Supply Block Run Standby OscillatorStart Regulation ConceptStandby Oscillator Regulation EnableMain Oscillator Main Oscillator IC201 IC202 Communications Waveforms Power ControlPlug PcontPower Control Post Power on Check Power Control Serial Data Communications BlockParallel Data Communications Block Interface IC201 Serial Data CommunicationsSerial Bus EEProm IC201Serial Data Communications Audio DSP IC501 Serial Data Communications HGA IC601 Parallel Data CommunicationsChip Select Line Parallel Data Communication Communications from IC202 to Other ICs Communications from Another IC to IC202Parallel Data Communication Disc Tray and Laser Platform Position No Power Tray Removal From the BottomMechanism Sled Position No Power Tray Removal From the TopTilt Motor Focus Coil LaserPower on Mechanical Sequence No Disc Power on Mechanical Sequence DVD Disc Page IC201 Turns On the Display Tray Motor DriveInterface Controller IC201 Recognizes the Tray Button IC201 Communicates with System Control IC202Tray Motor Drive IC202 Instructs Hybrid Gate Array IC601 Driver IC802 Translates the CommandTray Position Switch Returns Information to IC201 Tray Motor Drive System Control IC202 uses HGA IC601 Initial Sled Motor DriveInitial Sled Movement HGA IC601 Instructs Servo DSP IC701Initial Sled Motor Drive Servo DSP IC701 Issues Analog Commands to Driver IC802 Sled Still Sled OutwardInitial Sled Motor Drive Sled Drive Mute/Inhibit Home Position DetectionSled Driver IC802 Sends Voltages to the Stepper Sled Motor Initial Sled Motor Drive HGA IC601 to Servo DSP IC701 Communications Laser ServoSystem Control IC202 and HGA IC601 Communications Servo DSP IC701 to RF Amplifier IC001 CommunicationsLaser Servo CD Focus KHM-220A DVD Optical BlockDVD Focus Three Laser Beams from One Laser Photo Detectors TE +, TZCPage Operation Disc IdentificationSacd Disc Type Disc Identification Concept Servo FocusSearch Focus System Control IC202 to Servo IC701 Focus DriveFocus Search Communications System Control IC202 to HGA IC701Focus HGA IC601 to Servo IC701 SdcpsFocus DVD Kick ModeSpindle Motor Spindle Motor MDP CLV PB ModeMDS Spindle Motor System Control IC202 Uses HGA IC601 Tracking ServoTrack Counting in Pause or Picture Jump Tracking Servo Sled Movement to Another Location IC Summary ChartSled Motor Drive PB Following the TrackSled Motor Drive PB Tilt to Mid Position Tilt ServoTilt UP ICs InvolvedTilt Servo DVD Playback Power OFFManually Driving the Tilt Motor Tilt Servo Audio/Video Processing Block Process Blocks Processing RF Amp IC001Processing Flash ROM IC205 Video Process CH12O Converters IC902, IC905 IC907CH78O CH34OAudio Processing Tests Test ModeTest Mode Access Test Mode Access Video Level Adjustment Additional Test ModeSelf-Diagnostic Function Customer Error Codes Clearing Emergency CodesPage Troubleshooting No Power onNo DVD OSD logo No DVD PB CD PB OKNo DVD DL PB other discs PB OK No Disc PB