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LG Electronics GSA-4167B The differences of DVD-R/RW, DVD+R/RW discs and DVD-ROM, 0.4 um

Models: GSA-4167B GSA-4165B GSA-4168B

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The differences of DVD-R/RW, DVD+R/RW discs and DVD-ROM

1. Recording Layer

DVD-ROM (Read Only Disc)

.74

0.4 um

DVD-R/RW Disc

LPP

(Land Pre-Pit)

DVD+R/RW Disc

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LG Electronics GSA-4167B, GSA-4168B The differences of DVD-R/RW, DVD+R/RW discs and DVD-ROM, 0.4 um, Recording Layer

Contents

MODEL GSA-4165B GSA-4167B GSA-4168B P/NO 3828HS1047G August Printed in KoreaSERVICE MANUAL Super Multi DVD DriveCAUTION - INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM TABLE OF CONTENTS1. Support feature and writable disc INTRODUCTION3. Supported write method FEATURES1 General 2. Supported disc formats1x CD = 150 kB/s 4. Performance5. Audio 2.1 Applicable disc formats SPECIFICATIONSOperating System Recording tool3.2 Read/Write & Rotational speed 2.5 RPC Regional Playback Control Phase2, No Region3. DRIVE PERFORMANCE 2.4 Data capacity2.77, 5.54 Mbytes/s 3.4 Access time 1/3 stroke3.3 Data transfer rate 6. AUDIO PERFORMANCE 5. POWER REQUIREMENTS8. Dimensions 4. Quality and ReliabilityDrive activity indicator LOCATION OF CUSTOMER CONTROLSFront Pane l Drive Activity IndicatorsJumper Connector Digital Audio Output Connector Rear Pane lAnalog Audio Output Connector IDE Interface ConnectorEmergency Eject Hole DISASSEMBLY1. CABINET and CIRCUIT BOARD DISASSEMBLY 2. MECHANISM ASSY DISASSEMBLY2-2. Pick-up LightScribe only EXPLODED VIEWPBM00 MAIN C.B.A PBF00 FRONT C.B.AMulti session GLOSSARYLogical Erase a=30nm 2. Disc SpecificationThe differences of CD-R/CD-RW discs and General CD-ROM 1. Recording LayerPigment 3. Disc Materials1 CD-ROM disc 2 CD-R discGroove Focusing4. Reading process of Optical Disc LensAmorphous 5. Writing Process of CD-R Disc6. Writing process of CD-RW Disc 2 Layout of CD-R/RW disc 7. Organization of the PCA, PMA and Lead-in Area1 Layout of CD-ROM disc 9. OPC and ROPC 1 PCA Power Calibration Area1 OPC Optimum Power Control 8. Function of PCA and PMA area10. Writing Process of DISC 1. Recording Layer The differences of DVD-R/RW, DVD+R/RW discs and DVD-ROM0.4 um DVD-R/RW Disc LPP Land Pre-Pit DVD+R/RW DiscSingle Layer 2. Disc Specification3. Disc Materials 1 DVD-ROMDisc structure 2 Recording format using organic dye material DVD-R/DVD+RDisc structure Data erased state Disc structureRecording principles NRZI 4. Writing Pulse Wave Form of DVD+RNRZI N = 3 only the top pulseTtop , first pulse lead-time dT top , dTle2 2st Method Using Blocked Write Strategy Ttop 5. Writing Pulse Wave Form of DVD+RWNRZI Channel bits2 Layout of DVD+R disc Disc CenterDiameter 120 mm 1 Layout of DVD-ROM discDiameter 120 mm 3 Layout of DVD+RW discDisc Center Screen Printed Imaging Layer Clear Protective Coating DiscOD Label Zone Control Feature Zone Clamping/Logo Zone Center HoleLightScribe Media 1. LightScribe MediaSERVO Signals 2. Hardware Block DiagramLabel Printing Laser Power Reference Write Strategy ControlOPU ID Movement Range L=21um 3. MD Assy For LightScribeOptical Encoder Unit FFC 3PIN Schematic of Enc PCB4. Optical Encoder Assy Encoder PCB Optical Encoder ICP-up Unit HOP-7632TS CD DATA PROCESSINGData Processing Flow HOST DVD PLAYER EMPEG2 B/D 2. Copy Protection and Regional Code Management BlockBlock Diagram R8J32007If you want to play the disc prevented from the copy 3. About Prevention the DVD-ROM from to be copyIn case of a disc enhanced movie of 3 titles Example The disc manufactured in the U.S.A, has the number one 4. About the DVD-ROM Regional CodeRegional code INTERNAL STRUCTURE OF THE PICK-UP 1. Block Diagram of the PICK-UPHOP-7632TSSignal Description 2. Pick up Pin AssignmentSignal Name Main 3. Signal detection of the P/UTrack Center Tp/2IC101 R2S35002 CIRCUITDESCRIPTION OF 1. ALPC Automatic Laser Power Control CircuitIC301 R8J32007 CN1011-2. ALPC Automatic Laser Power Control Circuit Disc 2. Focus CircuitIC101 R2S35002Disc 3. Tracking & Sled CircuitIC101 R2S35002Optical IC101R2S35002 Disc3-2-2. Sled Servo 3-2-1. Tracking ServoPick-up 4. Spindle Circuit4-1-1. Block DiagramFGCAV Servo OpticalDVD-RW 1x, 2x, 4x DVD+R 2.4x, 4x, 8x, 12x, 16xPCAV 4-2-1. Block Diagram Wobble CLV Servo4-2-2. Wobble CLV Servo CD-R 4x, 8x, 16x, 24x, 32x CD-RW 4x, 10x, 16x, 24x DVD-R 2x, 4x, 8x, 16xPCAV DVD-R DL 2xTOP VIEW IC101 R2S35002 RF AMP Analog Signal ProcessorMAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION R2S35002BALANCE PickType Pin Functionspin Name pin NoType Equalizer fc auto-adjustment control clock input terminalpin Name pin Nomax. voltage pin Namepin No TypeR8J32007 IC301 R8J32007FPV Encoder, Decoder & DSP Singal ProcessorTop View Descramble 1.2 Block DiagramDemodulate Pin no 1.3 Pin TablePin no Pin Namedestination Data PLL/PRML Pin ListPin Name Pin Nodestination Servo Pin ListPin Name Pin Nodestination ATAPI Interface Pin ListPin Name Pin Nodestination Encoder Interface Pin ListPin Name Pin Nodestination Audio Interface Pin ListPin Name Pin Nodestination LSI/TEST Control Pin ListPin Name Pin NoFunction Power Supply/GND Pin ListPin Name Pin NoR2S3 0202FP IC601 R2S30202FP SPINDLE MOTOR AND 6CH ACTUATOR DRIVERPackage outline 42 PIN POWER SSOP 42P9R-K Page Input/Output circuit diagram 03 Data Slice/Equalizer Boost/Raw Slice/ Equalizer Frequency Adjust TROUBLESHOOTING GUIDE01 Laser Power Adjust using RD Power/WR Power/Erase Power 02 High Frequency/NRZI skew Adjust08 Servo Loop Gain Adjust 06 Focus Amp. and Total Amp. Adjust07 Tracking Amp. Adjust 12 Focus Offset Adjust for DVD-RAM Data Error pulse 09 Unwritten Slice Level Adjust for DVD-RAM10 Focus Offset Adjust for DVD-ROM, CD-R/RW 11 Focus Offset Adjust for DVD-RAM PID Amp16 Focus Offset Adjust for DVD-R/RW, DVD+R/RW, CD-R/RW 13 Tilt Adjust for DVD-RAM14 Tilt Adjust for DVD-R/RW, DVD+R/RW, CD-R/RW 15 Focus Deviation Adjust20 Focus Offset Adjust for DVD-R/RW, DVD+R/RWDID 17 Lens Sensitivity Adjust18 Spindle Offset Adjust 19 ADIP BPF/Read Timing Adjust for DVD+R/RWSlider#6,8-10 21 RTZ TimeOut Fail22 Focus Servo/Tracking Servo Fail All DiscSSB Byte8,9 Detail Error Code & Fail Analysis 1. Laser Power Initial AdjustSSB Byte21,22 2. Adjusting Error during Disc Load Sequence Lead in ErrorSSB Byte21,22 SSB Byte21,22 SSB Byte21,22 SSB Byte21,22 3. Loading Sequence Error Lead in ErrorIC701 JR6 Power Supply System Diagram5V in SW702 SW701PCB Poor Analysis - Check list HW Self- Diagnostic function 1. Self-Diagnostic Function by LED Blink 4 The defect of Flash-ROM 2 Does the power supply circuit operate normally?3 Is the clock of MPU in DSP oscillated correctly? A motor & actuator and its correspondence pin A control mode setup by the control terminal3. Motor, Abnormalities in Actuator System 1 IC601R2S30202FP 7ch driverOPUHOP-7632TS HITACHI ME BLOCK DIAGRAMHost IDE 12V GND 5V