LG Electronics GSA-4167B, GSA-4168B, GSA-4165B service manual

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HW Self- Diagnostic function

1. Self-Diagnostic Function by LED Blink.

•Basic operation: At JR6, MPU is included in DSP, MPU accesses each peripheral (inside, exterior) device, and discover a defect by the ability of a read/write of data to be performed correctly. Since MPU operates by the program with a built-in Flash-ROM, when abnormalities are in MPU, Flash-ROM, and these Data-Bus & control signals, this self-diagnostic function cannot be used. In such a case, the case where LED does not light up at all at the time of a power supply injection is almost the case.

•MPU: In DSP Flash-ROM (16Mb) is connected to the exterior Bus of MPU. Even if the MPU-Bus terminal of Flash-ROM short-circuits, it becomes impossible for MPU to read the right program data from Flash-ROM, and stops for this reason, turning on LED at all. On the other hand, the own poor device of DSP, and the open state of IC-pin, when a defect does not influencing Bas of MPU, it can detect correctly and becomes blink of LED according to those defects.

•DSP: DSP has ATAPI-IF, LDD-serial-IF, AFE-serial-IF, and an AFE control signal as Digital-IF. As Analog- IF, it has the slice circuit of RF signal from AFE, PLL, the objects ADC and DAC for SERVO, and ADC for ADIP detection. Among these, own poor Digital of DSP, and AFE-serial-IF can detect by this self-diagnostic function.

•AFE: Poor detection of AFE is restricted to detection of a limitation-item. Since the greater part of the function is analog signal processing, AFE serves as a register in AFE, and a check, which accepts it, serial IF in the logical digital examination from MPU. In addition, serial-IF for AFE control is performed via DSP. This is writing in the Write command and setting data, and is automatically transmitted to the predetermined register of DSP. Conversely, when it leads the register information on AFE, the read command can be written in the predetermined register of DSP, and the value of an AFE register can be read by reading the read register of DSP after that. Therefore, serial [between the poor register of AFE, and AFE and DSP], when there is LED blink with poor AFE — the defect of IF or the defect of the register for AFE of DSP is considered.

•Refer to the contrast table of the number of times of blink of LED, and a poor part.

•The self-diagnostic function by this LED blink is carried out in the state of a set without a PCB independent or loading Disc.

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Contents Model GSA-4165B/GSA-4167B/GSA-4168B Super Multi DVD DriveTable of Contents 4167B Support feature and writable discIntroduction 4165BSupported write method FeaturesGeneral Supported disc formatsAudio PerformanceWriting method SpecificationsOperating System Recording tool Applicable disc formatsRead/Write & Rotational speed RPC Regional Playback Control Phase2, No RegionData capacity CLV Access time 1/3 strokeData transfer rate PcavAcoustic noise DimensionsQuality and Reliability Stop/Eject button Drive activity indicatorLocation of Customer Controls Disc tray Emergency Eject HoleAnalog Audio Output Connector Power Connector Jumper ConnectorIDE Interface Connector Cabinet and Circuit Board Disassembly DisassemblyPick-up Exploded View Glossary ~0.5 um Disc SpecificationRecording Layer CD-R and CD-RW DiscPigment Reflective Layer Color Disc MaterialsCD-ROM disc CD-R discItop Laser Spot Position Time CD-RW DiscAmorphous Crystal phaseWriting Process of CD-R Disc Writing process of CD-RW DiscLayout of CD-R/RW disc Organization of the PCA, PMA and Lead-in AreaLayout of CD-ROM disc OPC and Ropc Function of PCA and PMA areaRecording Capacity of CD-R/RW 74Minute Recording media Writing Process of DiscPCA Test Area Lead-In Area PCA C ount Area Lead -out AreaDifferences of DVD-R/RW, DVD+R/RW discs and DVD-ROM DVD-ROM DVD-RW DVD+R DVD+RW Single LayerDual Layer Laser beam Recording format using organic dye material DVD-R/DVD+RDisc structure DVD-R DVD+RHigh reflection coefficient Low reflection coefficient Recording principlesDVD-RW DVD+RW Crystalline status Amorphous status2Tw Writing Pulse Wave Form of DVD+RShall be 0.1mW 2st Method Using Blocked Write StrategyDTera 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 MediaEncoder PowerCIrcuit ProcessorOptical Encoder Unit MD Assy For LightScribeOFG Optical Encoder AssyCodewheel GNDData Processing Flow DVDCD Data Processing Regional Code for DVD Disc Block Diagram R8J32007Copy Protection and Regional Code Management Block KEY Management Control Brief ProcessIf 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 Regional code About the DVD-ROM Regional CodeInternal Structure of the PICK-UP Block Diagram of the PICK-UPHOP-7632TSPick up Pin Assignment Signal Name Signal Description+D B+C kF+H E+G Signal detection of the P/UFocus Error Signal == A+C-B+D RF Signal == A+B+C+DPick-up Block DiagramAlpc Automatic Laser Power Control Circuit Focus Servo Focus CircuitTracking & Sled Circuit Block Diagram Tracking FollowingHOP-7632TS Block Diagram SeekUnit Sled Servo Tracking ServoOptical Pick-up Disc HOP-7632TS Motor unit Spindle CircuitFG CAV Servo Block Diagram Wobble CLV Servo Pin Assignment IC101 R2S35002 RF AMP Analog Signal ProcessorPick Function Pin FunctionsPin Name Pin No Type IP1/LPPOUT BlankWobsig IP2/MIRRPin Name Pin No Type Max. voltage Function Pin Layout IC301 R8J32007FPV Encoder, Decoder & DSP Singal ProcessorVinp ADC Pin no Pin Name Pin TableWpll Pin List Pin Name Pin No Destination Function Data PLL/PRML Pin List Pin Name Pin No Destination FunctionServo Pin List Pin Name Pin No Destination Function 5IO Atapi Hrstb AtapiDA2 Atapi DA1 DA0Lowzb IP1LPPINIP2MIRR WobsigFlash/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 Spgs ACTFLG,FG Actrst Common Input/Output circuit diagramCircuit Offset Adjust Troubleshooting GuideLaser Power Adjust using RD Power/WR Power/Erase Power High Frequency/NRZI skew AdjustServo Loop Gain Adjust Focus Amp. and Total Amp. AdjustTracking Amp. Adjust Focus Offset Adjust for DVD-RAM Data Error pulse Unwritten Slice Level Adjust for DVD-RAMFocus Offset Adjust for DVD-ROM, CD-R/RW Focus Offset Adjust for DVD-RAM PID AmpFocus Offset Adjust for DVD-R/RW, DVD+R/RW, CD-R/RW Tilt Adjust for DVD-RAMTilt Adjust for DVD-R/RW, DVD+R/RW, CD-R/RW Focus Deviation AdjustFocus Offset Adjust for DVD-R/RW, DVD+R/RWDID Lens Sensitivity AdjustSpindle Offset Adjust Adip BPF/Read Timing Adjust for DVD+R/RWSlider Spindle RTZ TimeOut FailFocus Servo/Tracking Servo Fail SSB Byte8,9 Detail Error Code & Fail Analysis Laser Power Initial AdjustSSB Byte21,22 Adjusting Error during Disc Load Sequence Lead in ErrorDVD-R/RW, +R/RW DVD-ROM,CD-R/RWSSB Byte21,22 SSB Byte21,22 Loading Sequence Error Lead in Error 8586 DSP PCB Poor Analysis Check listXRD Page Is the clock of MPU in DSP oscillated correctly? Does the power supply circuit operate normally?CS0B WCK RCKMotor & actuator and its correspondence pin Control mode setup by the control terminalMotor, Abnormalities in Actuator System IC601R2S30202FP 7ch driverDVD/CD DSP Block DiagramMBM29LV160BE Fujitsu

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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