LG Electronics GSA-4167B, GSA-4168B, GSA-4165B service manual Block Diagram Wobble CLV Servo

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4-2-1. Block Diagram (Wobble CLV Servo)

 

 

 

 

 

 

C116

C117

C118

 

 

 

 

 

 

 

WAG1

WAG2

WAG3

 

 

 

 

 

 

 

18

19

20

 

 

 

 

SA

 

 

 

 

 

 

 

 

 

87

 

ADO

 

 

 

 

 

 

 

SB

S

HPF

AGC1

-

 

 

 

 

88

 

 

 

 

SC

/

 

 

 

HPF

 

 

 

 

H

 

 

 

+

 

Disc

 

 

89

HPF

 

AGC2

 

 

 

SD

 

 

 

 

 

 

 

BCO

 

 

 

 

Motor unit

Optical

 

90

 

 

 

 

 

 

MA

 

 

 

 

 

 

 

Pick-up

C171

92

 

 

 

 

 

 

HOP-7632TS

MB

 

 

BPF

HPF

AGC3

 

 

 

 

 

 

 

93

 

 

 

 

 

 

 

 

C172

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MC

 

 

 

 

 

WOBSIG

 

 

 

94

 

 

 

HPF

+

 

 

C173

 

 

 

37

 

 

MD

 

 

 

 

 

 

 

 

 

 

 

 

-

 

 

 

 

 

VREF

 

 

 

 

C174

95

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

WBLSH

 

IC101

 

 

 

 

 

WBLSH

 

31

 

R2S35002

 

 

 

 

1.65V

IC301

 

 

 

 

 

 

 

 

R8J32007

 

 

 

 

 

154

 

R375

 

 

 

 

 

 

 

SPD

SPD

P

 

M

 

 

 

 

SP

 

211

 

 

 

 

 

 

W

 

U

 

 

 

 

 

C349

R349

M

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

PH

 

 

 

 

 

Motor Kick

 

 

 

 

 

 

 

 

 

 

 

 

1.65V

 

 

 

 

REG

 

 

 

 

 

 

 

 

 

 

 

 

 

4-2-2. Wobble CLV Servo

CD-R : 4x, 8x, 16x, 24x, 32x, 40x, 48x

/CD-RW : 4x, 10x, 16x, 24x, 32x

/DVD-R : 2x, 4x, 8x, 16x(PCAV)

/DVD-R DL : 2x, 4x

/DVD-RW : 1x, 2x, 4x, 6x

/DVD+R : 2.4x, 4x, 8x, 12x, 16x(PCAV)

/DVD+R DL : 2.4x, 4x, 6x

/DVD-RAM : 2x, 3x, 3-5x(PCAV)

/DVD+RW : 2.4x, 4x, 8x

When drive write DVD-RAM/R/RW/+R/+RW/CD-R/CD-RW, the spindle motor is controlled using Wobble CLV Spindle Servo.

The WOBSIG signal(R2S35002 37pin) input to DSP IC(R8J32007 154pin). The DSP Controller in R8J32007 uses WOBSIG as linear velocity feed back, therefore the Wobble CLV Spindle Servo doesn’t work well when WOBSIG signal is abnormal.

The spindle controller PWM output signal SPD (R8J32007 211pin) input to SPIN in Drive IC(R2S30202FP 1pin) after Low-Pass Filtering.

The PWM output signal U,V, W signal(R2S30202FP 12, 13, 14pin) drives Spindle Motor without using a sensor.

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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 methodRead/Write & Rotational speed RPC Regional Playback Control Phase2, No RegionData capacity Pcav Access time 1/3 strokeData transfer rate CLVAcoustic noise DimensionsQuality and Reliability Disc tray Emergency Eject Hole Drive activity indicatorLocation of Customer Controls Stop/Eject buttonAnalog Audio Output Connector Power Connector Jumper ConnectorIDE Interface 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-R/RW disc Organization of the PCA, PMA and Lead-in AreaLayout of CD-ROM 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 DVD-ROM DVD-RW DVD+R DVD+RW Single LayerDual Layer 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 0.1mWDTera Writing Pulse Wave Form of DVD+RWTtop OUT PSN Layout of DVD-ROM discLayout of DVD+R disc Layout of DVD+RW disc LightScribe Media LightScribe MediaProcessor PowerCIrcuit EncoderMD Assy For LightScribe Optical Encoder UnitGND Optical Encoder AssyCodewheel OFGData Processing Flow DVDCD Data Processing KEY Management Control Brief Process Block Diagram R8J32007Copy Protection and Regional Code Management Block Regional Code for DVD DiscIf you want to play the disc prevented from the copy About Prevention the DVD-ROM from to be copyCase of a disc enhanced movie of 3 titles 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 CircuitHOP-7632TS Block Diagram SeekUnit Tracking Servo Sled ServoOptical Pick-up Disc HOP-7632TS Motor unit Spindle CircuitFG CAV Servo Block Diagram Wobble CLV Servo IC101 R2S35002 RF AMP Analog Signal Processor Pin AssignmentPick Function Pin FunctionsPin Name Pin No Type 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 LowzbFlash/SRAM Pin List Pin Name Pin No Destination Function H8S Micro-Processor Pin ListPin Name Pin No Destination Function SEL30 Power Supply/GND Pin List Pin Name Pin No Function Pin name Function Package outline 42 PIN Power Ssop 42P9R-KPin 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 AdjustServo Loop Gain Adjust Focus Amp. and Total Amp. AdjustTracking Amp. 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/RWDIDSlider Spindle RTZ TimeOut FailFocus Servo/Tracking Servo Fail 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 DSP PCB Poor Analysis Check listXRD 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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