LG Electronics GSA-4165B, GSA-4168B Tracking & Sled Circuit, Block Diagram Tracking Following

Page 46

3. Tracking & Sled Circuit

3-1-1. Block Diagram (Tracking Following)

 

 

 

 

 

 

 

 

 

 

 

 

IC101

 

 

 

 

 

 

 

 

MPPO

 

 

R2S35002

 

 

 

 

 

 

 

(A+D)-(B+C)

 

 

 

 

 

 

 

 

A,B,C,D

 

SPPO

 

L

 

L

HAVC

 

 

 

 

 

 

LS

1

TE

 

 

 

 

 

 

P

G

P

 

(EF1~EF4)

 

 

 

to

 

 

 

 

F

 

F

 

TE

 

 

 

 

 

 

 

V14

 

Disc

Optical

 

 

 

 

 

 

 

 

R101

(A+D)-(B+C)-K[(EF1+EF4)-(EF2+EF3)]

 

 

 

 

Motor unit

Pick-up

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOP-7632TS

 

 

 

 

 

 

 

 

 

C101

 

 

 

 

 

 

 

 

 

 

 

 

 

TRD

 

 

 

 

 

Tracking

 

 

GND

 

 

 

181

DAC

 

 

 

 

ADC

 

 

 

 

 

Compensator

173

 

 

 

 

 

 

 

 

TE

 

 

 

 

 

 

 

 

 

 

 

 

TACT- TACT+

SL2

 

 

 

 

 

 

 

 

 

 

 

183

 

 

 

 

 

 

 

 

 

 

 

 

 

Sled

 

 

 

 

 

 

 

 

 

DAC

 

 

 

 

IC301

 

 

 

 

182

 

Compensator

 

 

 

 

 

 

 

 

 

R8J32007

 

 

A+

 

 

 

 

 

 

 

 

SL1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A-

 

 

 

 

 

 

 

 

 

 

 

B+

 

 

 

 

 

 

 

 

 

 

 

B-

 

 

 

 

 

 

 

 

 

 

SLED MOTOR

 

 

 

 

 

 

 

 

 

 

Unit

 

 

 

 

 

 

 

 

 

 

 

(CN601)

TACT+

 

36

 

 

TOIN

 

 

 

R330

 

 

 

39

 

 

 

 

 

 

 

 

 

 

 

TRD

 

 

 

 

 

 

 

 

 

 

 

TACT-

 

37

IC601

 

 

 

 

C336

R372

 

 

 

 

 

 

 

 

 

 

 

 

R2S30202FP

EN1

 

 

 

 

 

 

 

SL2N

 

 

20

CTL1

 

1.65V

1.65V

 

 

A-

8

 

 

 

 

 

 

 

 

EN2

 

 

 

 

 

 

 

 

 

 

21

CTL2

 

 

 

 

 

B-

SL1N

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SL2P

 

 

 

SL1IN

 

 

 

R331

 

 

A+

6

 

2

 

 

 

 

SL2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SL2IN

C337

 

R373

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R332

 

 

 

SL1P

 

 

 

 

 

 

 

 

 

B+

9

 

3

 

 

 

 

 

SL1

 

 

 

 

 

 

 

 

 

 

 

 

42

 

 

C338

R374

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REF

 

 

 

 

 

 

 

 

 

 

 

 

 

1.65V

 

 

 

 

 

 

 

 

 

 

C604

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

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Contents Super Multi DVD Drive Model GSA-4165B/GSA-4167B/GSA-4168BTable of Contents 4165B Support feature and writable discIntroduction 4167BSupported disc formats FeaturesGeneral Supported write methodPerformance AudioApplicable disc formats SpecificationsOperating System Recording tool Writing methodData capacity RPC Regional Playback Control Phase2, No RegionRead/Write & Rotational speed Pcav Access time 1/3 strokeData transfer rate CLVQuality and Reliability DimensionsAcoustic noise Disc tray Emergency Eject Hole Drive activity indicatorLocation of Customer Controls Stop/Eject buttonIDE Interface Connector Power Connector Jumper ConnectorAnalog Audio Output Connector Disassembly Cabinet and Circuit Board DisassemblyPick-up Exploded View Glossary CD-R and CD-RW Disc Disc SpecificationRecording Layer ~0.5 umCD-R disc Disc MaterialsCD-ROM disc Pigment Reflective Layer ColorCD-RW Disc Itop Laser Spot Position TimeWriting process of CD-RW Disc Crystal phaseWriting Process of CD-R Disc AmorphousLayout of CD-ROM disc Organization of the PCA, PMA and Lead-in AreaLayout of CD-R/RW disc Function of PCA and PMA area OPC and RopcPCA C ount Area Lead -out Area Writing Process of DiscPCA Test Area Lead-In Area Recording Capacity of CD-R/RW 74Minute Recording mediaDifferences of DVD-R/RW, DVD+R/RW discs and DVD-ROM Dual Layer Single LayerDVD-ROM DVD-RW DVD+R DVD+RW DVD-R DVD+R Recording format using organic dye material DVD-R/DVD+RDisc structure Laser beamCrystalline status Amorphous status Recording principlesDVD-RW DVD+RW High reflection coefficient Low reflection coefficientWriting Pulse Wave Form of DVD+R 2Tw2st Method Using Blocked Write Strategy Shall be 0.1mWTtop Writing Pulse Wave Form of DVD+RWDTera Layout of DVD+R disc Layout of DVD-ROM discOUT PSN Layout of DVD+RW disc LightScribe Media LightScribe MediaProcessor PowerCIrcuit EncoderMD Assy For LightScribe Optical Encoder UnitGND Optical Encoder AssyCodewheel OFGCD Data Processing DVDData Processing Flow KEY Management Control Brief Process Block Diagram R8J32007Copy Protection and Regional Code Management Block Regional Code for DVD DiscCase of a disc enhanced movie of 3 titles About Prevention the DVD-ROM from to be copyIf you want to play the disc prevented from the copy About the DVD-ROM Regional Code Regional codeBlock Diagram of the PICK-UPHOP-7632TS Internal Structure of the PICK-UPSignal Name Signal Description Pick up Pin AssignmentRF Signal == A+B+C+D Signal detection of the P/UFocus Error Signal == A+C-B+D +D B+C kF+H E+GBlock Diagram Pick-upAlpc Automatic Laser Power Control Circuit Focus Circuit Focus ServoBlock Diagram Tracking Following Tracking & Sled CircuitUnit Block Diagram SeekHOP-7632TS Tracking Servo Sled ServoFG CAV Servo Spindle CircuitOptical Pick-up Disc HOP-7632TS Motor unit Block Diagram Wobble CLV Servo IC101 R2S35002 RF AMP Analog Signal Processor Pin AssignmentPick Pin Name Pin No Type Pin FunctionsFunction IP2/MIRR BlankWobsig IP1/LPPOUTPin Name Pin No Type Max. voltage Function IC301 R8J32007FPV Encoder, Decoder & DSP Singal Processor Pin LayoutVinp ADC Pin Table Pin no Pin NameData PLL/PRML Pin List Pin Name Pin No Destination Function Wpll Pin List Pin Name Pin No Destination FunctionServo Pin List Pin Name Pin No Destination Function DA1 DA0 Hrstb AtapiDA2 Atapi 5IO AtapiWobsig IP1LPPINIP2MIRR LowzbPin Name Pin No Destination Function H8S Micro-Processor Pin ListFlash/SRAM Pin List Pin Name Pin No Destination Function SEL30 Power Supply/GND Pin List Pin Name Pin No Function Pin Function Package outline 42 PIN Power Ssop 42P9R-KPin name Function Loading Input/Output circuit diagram Spgs ACTFLG,FG Actrst CommonHigh Frequency/NRZI skew Adjust Troubleshooting GuideLaser Power Adjust using RD Power/WR Power/Erase Power Circuit Offset AdjustTracking Amp. Adjust Focus Amp. and Total Amp. AdjustServo Loop Gain Adjust Focus Offset Adjust for DVD-RAM PID Amp Unwritten Slice Level Adjust for DVD-RAMFocus Offset Adjust for DVD-ROM, CD-R/RW Focus Offset Adjust for DVD-RAM Data Error pulseFocus Deviation Adjust Tilt Adjust for DVD-RAMTilt Adjust for DVD-R/RW, DVD+R/RW, CD-R/RW Focus Offset Adjust for DVD-R/RW, DVD+R/RW, CD-R/RWAdip BPF/Read Timing Adjust for DVD+R/RW Lens Sensitivity AdjustSpindle Offset Adjust Focus Offset Adjust for DVD-R/RW, DVD+R/RWDIDFocus Servo/Tracking Servo Fail RTZ TimeOut FailSlider Spindle Detail Error Code & Fail Analysis Laser Power Initial Adjust SSB Byte8,9Adjusting Error during Disc Load Sequence Lead in Error SSB Byte21,22DVD-ROM,CD-R/RW DVD-R/RW, +R/RWSSB Byte21,22 SSB Byte21,22 Loading Sequence Error Lead in Error 8586 XRD PCB Poor Analysis Check listDSP Page WCK RCK Does the power supply circuit operate normally?CS0B Is the clock of MPU in DSP oscillated correctly?IC601R2S30202FP 7ch driver Control mode setup by the control terminalMotor, Abnormalities in Actuator System Motor & actuator and its correspondence pinFujitsu Block DiagramMBM29LV160BE DVD/CD DSP

GSA-4167B, GSA-4165B, GSA-4168B specifications

LG Electronics has been a prominent name in the electronics industry, particularly known for its innovative optical storage solutions. Among its noteworthy products are the GSA-4167B, GSA-4165B, and GSA-4168B DVD writers, each showcasing a blend of advanced technology and user-friendly features tailored to meet diverse consumer needs.

The LG GSA-4167B stands out for its versatility and performance. This model supports a wide range of disc formats, including DVD-R, DVD+R, DVD-RW, DVD+RW, and dual-layer DVDs, enhancing its usability for various applications. With a generous writing speed of up to 16x for DVD+R and 8x for dual-layer DVDs, users can create and backup data efficiently. This device is equipped with LG’s Super Multi technology which allows it to read and write multiple formats, making it a perfect choice for users who wish to maximize their media experience without being restricted to a single format.

The GSA-4165B, though slightly older, remains popular due to its reliable performance and ease of use. This model also supports a wide array of formats and achieves impressive speeds comparable to its counterparts. With features such as Buffer Under Run Technology, the GSA-4165B minimizes interruptions during the burning process, reducing the risk of damaging data. Additionally, its sleek design makes it appealing for desktop setups, offering both aesthetics and practicality.

On the other hand, the LG GSA-4168B is known for its advanced capabilities, particularly in terms of burning dual-layer DVDs. Supporting speeds up to 16x for standard DVDs and 4x for dual-layer formats, it combines speed with efficiency. This model incorporates LightScribe technology, enabling users to etch labels directly onto specially coated discs, adding a personal touch to data storage. Its efficient cooling system helps maintain performance during extensive usage, ensuring longevity and reliability.

All three models represent LG's commitment to quality and innovation in optical storage technology. With features such as Power Burn technology and Seamless Link, they provide users peace of mind during high-speed data transfers. Their compatibility with different operating systems further enhances their versatility, making them suitable for both home users and professionals. Overall, the GSA-4167B, GSA-4165B, and GSA-4168B are exemplary models that reflect LG Electronics' dedication to advancing technology and enhancing user experience in the realm of optical drives.
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