LG Electronics GSA-4165B, GSA-4168B, GSA-4167B service manual Internal Structure of the PICK-UP

Page 40

INTERNAL STRUCTURE OF THE PICK-UP

1. Block Diagram of the PICK-UP(HOP-7632TS)

IC2(FM)

CD-VR

5

6

7

DVD-VR

8

 

R14

4

 

3

Rd

 

2

C12

 

1

 

 

C13

45Tilt-

44Tilt+

43TR-

42TR+

41AF-

40AF+

39 GND(FM)

38

FM

37

VREF

36

SEL

35

VCC(FM)

34

ENA

 

 

 

 

 

C3

 

 

 

 

R2

 

 

 

 

 

 

 

 

 

 

 

 

R4

 

 

 

 

 

 

 

 

R1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16 15 14 13 12 11 10

IC2(LDD)

 

 

 

 

 

 

 

17

VSORSET

EN

AGND

ISLOP

IAPC

Rfreq

SLGVSA 9

 

DVD-LD

 

 

 

 

 

 

 

 

 

FB2

 

 

 

 

 

 

 

 

 

 

 

 

18

OUT2

 

 

 

 

 

 

C2

 

 

 

 

 

 

 

VSL 8

 

 

19

OUT2

 

 

 

 

 

 

C1

FB1

 

 

 

 

 

 

CLK 7

 

 

20

VSO

 

 

 

 

 

CLKB 6

R7

 

21

VSO

 

 

 

 

 

GND 5

 

 

 

 

 

 

 

 

22

GND

 

 

 

 

 

GND 4

R8

 

23

OUT1

 

 

 

 

 

NRZB 3

 

CD-LD

24 OUT1

NC

BUSY

SEN

SDIO

SCLK

NRZ 2

 

 

25

NC

MON1

 

 

 

VSO

 

 

 

 

 

RWB 1

 

 

 

 

26 27 28 29 30 31 32

 

 

C6

 

 

C5 FB3

 

 

 

C9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C10

 

 

 

 

 

 

IC3(OEIC)

 

 

 

 

 

 

 

 

 

 

Rth

 

 

 

 

 

 

 

 

 

 

 

 

7

GND

F4

 

F1

 

EF4

8

 

 

 

 

 

 

 

 

 

 

C14

6

VD

F3

 

F2

 

EF1

9

 

5

VCC

 

 

VA 10

C15

VS

D

A

VB 11

4

 

 

3

VC2

C

B

VEF2 12

 

 

2

VEF3

E4

E1

VREP 13

1

SW

E3

E2

VRFN 14

33

IAPC

32

SLG

31

VSA5

30

VSL25

29

CLK

28

CLKB

27

GND(LDD)

26

NRZB

25

NRZ

24

GND(LDD)

23

MONITOR

22

RWB

21

SDIO

20

SCLK

19

BUSY

18

SEN

17

VSO

16

Vcc(FM)

15

GND(OEIC,TEMP)

14 RF-

13RF+

12E2+F2

11C

10A

9E1+F1

8E4+F4

7D

6B

5E3+F3

4GAINSW

3Vc(OEIC)

2Vcc(OEIC)

1GND(OEIC,TEMP)

Behind View

DVD-LD : 1st Vendor : Rd = 82k

DVD-LD : 2nd Vendor : Rd = 5.6k

44

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Contents Super Multi DVD Drive Model GSA-4165B/GSA-4167B/GSA-4168BTable of Contents Support feature and writable disc Introduction4165B 4167BFeatures GeneralSupported disc formats Supported write methodPerformance AudioSpecifications Operating System Recording toolApplicable disc formats Writing methodData capacity RPC Regional Playback Control Phase2, No RegionRead/Write & Rotational speed Access time 1/3 stroke Data transfer ratePcav CLVQuality and Reliability DimensionsAcoustic noise Drive activity indicator Location of Customer ControlsDisc tray Emergency Eject Hole Stop/Eject buttonIDE Interface Connector Power Connector Jumper ConnectorAnalog Audio Output Connector Disassembly Cabinet and Circuit Board DisassemblyPick-up Exploded View Glossary Disc Specification Recording LayerCD-R and CD-RW Disc ~0.5 umDisc Materials CD-ROM discCD-R disc Pigment Reflective Layer ColorCD-RW Disc Itop Laser Spot Position TimeCrystal phase Writing Process of CD-R DiscWriting process of CD-RW 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 RopcWriting Process of Disc PCA Test Area Lead-In AreaPCA C ount Area Lead -out 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 Recording format using organic dye material DVD-R/DVD+R Disc structureDVD-R DVD+R Laser beamRecording principles DVD-RW DVD+RWCrystalline status Amorphous status 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 MediaPower CIrcuitProcessor EncoderMD Assy For LightScribe Optical Encoder UnitOptical Encoder Assy CodewheelGND OFGCD Data Processing DVDData Processing Flow Block Diagram R8J32007 Copy Protection and Regional Code Management BlockKEY Management Control Brief Process 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 AssignmentSignal detection of the P/U Focus Error Signal == A+C-B+DRF Signal == A+B+C+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 Blank WobsigIP2/MIRR 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 Hrstb Atapi DA2 AtapiDA1 DA0 5IO AtapiIP1LPPIN IP2MIRRWobsig 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 CommonTroubleshooting Guide Laser Power Adjust using RD Power/WR Power/Erase PowerHigh Frequency/NRZI skew Adjust Circuit Offset AdjustTracking Amp. Adjust Focus Amp. and Total Amp. AdjustServo Loop Gain Adjust Unwritten Slice Level Adjust for DVD-RAM Focus Offset Adjust for DVD-ROM, CD-R/RWFocus Offset Adjust for DVD-RAM PID Amp Focus Offset Adjust for DVD-RAM Data Error pulseTilt Adjust for DVD-RAM Tilt Adjust for DVD-R/RW, DVD+R/RW, CD-R/RWFocus Deviation Adjust Focus Offset Adjust for DVD-R/RW, DVD+R/RW, CD-R/RWLens Sensitivity Adjust Spindle Offset AdjustAdip BPF/Read Timing Adjust for DVD+R/RW 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 Does the power supply circuit operate normally? CS0BWCK RCK Is the clock of MPU in DSP oscillated correctly?Control mode setup by the control terminal Motor, Abnormalities in Actuator SystemIC601R2S30202FP 7ch driver Motor & actuator and its correspondence pinBlock Diagram MBM29LV160BEFujitsu 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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