Control circuit section | Fujitsu MCJ3230SS specification

General Description

1.2.4 Control circuit section

Figure 1.4 is the block diagram of the control circuit section.

Figure 1.4 Control circuit section block diagram

The control circuit section is divided into two parts: a controller section which deals with control between the SCSI interface and drive interface, and a drive circuit section which controls the drive.

(1) Controller circuit section

The controller circuit's reliability is improved by large-scale integrated circuit technology. The high-speed microprocessor (MPU) handles SCSI interface control and drive control such as drive read-and-write control and single-beam control.

(2) Drive circuit section

The drive circuit section consists of the following circuits:

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Laser diode control circuit

Signal reproduction circuit

Servo/seek control circuit

Rotation control circuit

Drive miscellaneous control circuit

1-10	C156-E224-01EN

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Fujitsu MCJ3230SS manual Control circuit section block diagram

Contents

MCJ3230SS Optical Disk Drive Product Manual For Safe Operation Handling of This Manual Revision History This page is intentionally left blank Preface Overview of Manual Acronyms and Abbreviations Conventions for Alert MessagesGlossary Preface Disclaimer Low temperature burns Important Alert ItemsImportant Alert Messages Device damage Damage for data medium Damage for disk mediumEye inflammation Data loss This manual Scsi Ansi ISO/IEC *1ISO/IEC JTC1 *1 Fujitsu Limited Contents Installation Requirements Host Interface 6.6 Operation and Cleaning Diagnosis and Maintenance C156-E224-01EN Xiii Illustrations Figures Revision label Revision number indication Power consumption in power save mode Tables C156-E224-01EN Xvii This page is intentionally left blank General Description Features Performance Features Reliability Maintainability/operability Adaptability Interface General Description Drive Configuration Drive model Configuration Optical disk drive configuration Mechanical sections Control circuit section block diagram Control circuit section Drive Configuration This page is intentionally left blank Specifications Optical Disk Drive SpecificationsModel and product number Model and order number Drive specifications Specifications 1 Specifications 2 Density Environmental and power requirements Environmental and power requirements 1 Environmental and power requirements 2 Ietm Error rate MTBF= Recommended optical disk cartridge specifications Optical Disk Cartridge SpecificationsRecommended optical disk cartridge specifications Optical disk cartridge Optical disk cartridge Disk specifications Disk specifications Defect management schematic diagram Defect Management Example of alternate processing Environmental Requirements Installation RequirementsTemperature measurement point Surface temperature measurement points Air flow Temperature requirements and measuring methodTemperature requirements at measurement points Air purity Temperature rise under several conditionsTemperature at each measuring point Reference External dimensions Mounting Requirements Dimensions without panel Installation direction Installation directions Centers of gravity Centers of gravity Mounting frame structure Service clearance Power Supply Requirements Current waveform +5 VDC Drive connectors Cable Connections 11 Shape of setting terminal Pin assignments Cable connector specifications Recommended components for connection Connection Modes 12 Scsi bus connection modes 13 Scsi bus connection modes Settings Default jumper settingsSetting terminal Scsi ID setting CNH2 Scsi terminating resistor mode Write cache mode setting Spindle motor automatic stop mode setting General notes Installation Requirements 15 Packing style Checks before mounting the drive Mounting procedureMounting Cable Connections Confirming initial operations Dismounting Drive Connection check This page is intentionally left blank Interface Connector Host Interface Scsi interface connector cable side Scsi interface connector pin assignments single-ended type MSG SEL Reset response Various ProcessesDefective sector management Automatic alternate sector assignment function Read cache Cache functionData buffer MO write cache Power management functionPower mode Active mode Pre-idle modeIdle mode Standby mode Power mode transition Power mode LED indications LED indications Scsi Commands Scsi commands Inquiry command Test Unit Ready commandTest Unit Ready command Inquiry command response data Read Capacity command Mode Select commandRead Capacity command Mode Select command 12 Mode parameter header 10 Mode page codes11 Mode parameter list 13 Block descriptor 14 Mode15 Read/write error recovery 16 Variable values in the read-write error recovery Default values in the read-write error recovery 18 Flexible disk Variable values in the flexible disk 22 Variable values in the Caching 24 Power condition21 Caching Verify control 25 Variable values in the Power condition26 Default values in the Power condition Variable values in the Verify control 28 Verify modeDefault values in the Verify control Control field Mode Sense command31 Mode Sense command 35 Block Descriptor 33 Mode parameters34 Mode Parameter Header START/STOP Unit command 36 Mode37 START/STOP Unit command 38 Start, stop, and eject processing Reserve command 39 Reserve command Release command Request Sense command40 Release command 41 Request Sense command 43 Error Code 42 Request Sense Data 44 Sense Key 45 Logical track address format 46 ASC and Ascq definitions 47 Format progress indication bytes PREVENT/ALLOW Medium Removal command 48 PREVENT/ALLOW Medium Removal command49 Responses to Prevent, Allow, and Eject Sense KEY Read 6 command Read 10 command50 CDB of Read 6 command 51 Read 10 command Verify command Write 6 command52 Verify command 53 CDB of Write 10 command 55 Write and Verify command Write 10 command54 Write 10 command Seek 6 command Seek 10 command56 Seek 6 command 57 Seek 10 command Erase command Synchronize Cache command58 Erase command 59 Synchronize Cache command Format Unit command 60 Format Unit command61 Format Unit parameter list 62 Defect List Header Read Defect Data command 63 Read Defect Data command64 Defect List Format of Read Defect Data 10 command 65 Defect list header of Read Defect Data 10 command Send Diagnostic command Receive Diagnostic Results command Diml Write Buffer command70 Write Buffer command Read Long command Write Long command71 Read Long command 72 Write Long command Scsi Messages Message formatsMessage types 73 Types of messages provided by ODD Message functions LUN 74 Transfer mode settings requested by Init to ODD 75 Timing specifications 1 Timing Rule 75 Timing specifications 2 75 Timing specifications 3 76 Fast Scsi Timing specifications BUS Free phase Arbitration phase Selection phase Transfer in asynchronous mode Transfer in Fast Scsi mode 10 Attention condition Operation and Cleaning Operating Optical Disk Drive Optical disk drive Optical disk drive front view with panel Inserting cartridge Operating Optical Disk Drive Inserting cartridge Ejecting removing cartridge Removing cartridge Cleaning Drive Head cleaner Optical Disk Cartridge Operation Optial disk cartridge Write protect tab Write protect tab How to affix an index label on the MO cartridge See figure How to stick an index label on the MO cartridge Operation and Cleaning Cleaning Optical Disk Cartridge Cleaning toolCleaning kit Packed items cleaning kit Cleaning procedure Cleaning procedure Cleaning procedure 10 Cleaning procedure Diagnosis and Maintenance Self-diagnostic functionDiagnosis Initial self-diagnosis Diagnostic command Test program Maintenance Information Maintenance requirements Revision number REV. no Glossary Error correction code Error detection and correctionRecording power Disk reference surface Status This page is intentionally left blank Acronyms and Abbreviations ODD ODFOEM PCA Index Index Fujitsu Internal Use Only Index Write and Verify command Fujitsu Limited This page is intentionally left blank READER’S Comment Form MCJ3230SS Optical Disk