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1. N UTILISER AUCUN AUTRE CORDON D ALIMENTATION Sur 100 120 V Fiche Lame parall le avec une broche de mise la terre Configuration NEMA 5 15P Cordon Type SVT ou SJT trois flis 16 ou 18 AWG Longeur Maximum 15 pleds Capacite Minimum 10 A 250 V Sur 220 240 V Fiche Lame tandem avec une broche de mise la terre Configuration NEMA 6 15P Cordon Type SVT ou SJT trois fils 16 ou 18 AWG Longeur Maximum 15 pieds Capacite Minimum 10 A 250 V Contents Preface xiii Chapter 1 Overview 11 1 2 1 3 Features era ee ee ea 1 1 System Configuration 1 2 Writing and Reading Data in the RWZO1 1 2 Chapter 2 System Description of the RWZO1 2 1 2 2 2 3 2 4 2 5 2 6 2 7 Internal Structure of the RWZO1 2 1 2 11 Disk Drive Section 2 1 2 12 SCSI Controller se unes ea oe Gade 2 4 2 1 3 Front View of the RWZO1 2 7 2 14 Rear View of the RWZOl 2 8 Connecting the RWZO1 2 9 System Configuration 1 liliis 2 11 Checking a SCSI ID Number 2 11 2 4 1 Operation for VMS 2 12 2 4 2 Operation for ULTRIX 2 12 Setting Switchpack Switches 2 12 2 5 1 Setting Switches for Operating Parameters 2 1
2. is on and down 0 is off see Figure 2 11 When delivered from the factory the SCSI ID number is set to 0 switches 6 7 and 8 down The switch settings for the allowable SCSI ID numbers are shown in Table 2 1 Figure 2 11 Setting the SCSI ID Number PARITY TERMINATOR TERMINATOR POWER MANUAL EJECT AUTO SPIN UP papse EUR 4 e 1 DISABLE 9 9 9 e e e ENABLE e e e e e e e e O en CS 8683 System Description of theRWZOL 2 15 Table 2 1 SCSI ID Number Switch Settings SCSI ID number ID SELECT switch position 4 2 1 0 OFF OFF OFF 1 OFF OFF ON 2 OFF ON OFF 3 OFF ON ON 4 ON OFF OFF 5 ON OFF ON 6 ON ON OFF 7 ON ON ON Note When you do not know which SCSI ID number to set contact your system manager 2 6 Changing the etc disktab File ULTRIX 1 Typen the following command grep rwz0l etc disktab 2 Ifthe following message is displayed skip the next step rwzO1 RWZO1 DEC RWZ01 Removal 3 Add the following field to etc disktab MO disk drives RWZO1 rwz01 RWZ01 DEC RWZOl Removal ty removal ns 31 nt 10 nc 1862 pa 32768 ba 8192 fa 1024 pb 131072 bb 4096 fb 1024 pc 576999 bc 8192 fc 1024 pg 413159 bg 8192 fg 1024 2 16 System Description of the RWZO1 2 7 Creating the Special File ULTRIX With the ULTRIX operating system you need to create a special file for the RWZOI1 by using the MAKEDEV 8 shell script For more informat
3. tab on the disk is set to DATA PROTECT seeFigure 3 2 Make sure that the disk is not faulty If there is any fault replace the disk Make sure that the disk is an RWX1K 01 or equivalent Make sure that switchpack switch 1 is set to ENABLE See Section 2 5 Setting Switchpack Switches Make sure that the disk is not faulty If there is any fault replace the disk How to HandleFailures 3 3 Table 3 1 Cont General Failures and Corrective Action Problem Action Disk data cannot be read Make sure that the disk is not faulty If there is any fault replace the disk Make sure the disk is an RWXIK 01 or equivalent Figure 3 1 Ejecting a Disk in an Emergency 3 4 How to Handle Failures nS CS 8688 Figure 3 2 Disk Data Protection Switch Tab CALLE lt gt DATA PROTECT DATA PROTECT SWITCH KE fu CS 8679 3 2 Error Codes This section describes how to collect an error log and how to determine the cause of an error 3 2 1 Operation for VMS To read the VMS error log enter the following command ANALYZE ERROR_LOG For more information about the VMS ANALYZE ERROR LOG utilities see the VMS Error Log Utility Manual Note the EXTENDED SENSE DATA of SCSI entries in the error log output There are two types of error codes in the EXTENDED SENSE DATA of error log a sense key and an additional sense code Sens
4. 3 TERMINATOR POWER 3 The default is ENABLE This switch controls whether the RWZOI or some external device supplies SCSI power to the SCSI terminator If the built in RWZOI terminator is used an external SCSI terminator is not required The power source for the terminator is determined by whether the RWZOL is used as a terminator unit e Set the switch to ENABLE when the RWZOI is the terminating unit see Figure 2 9 System Description of the RWZO1 2 13 Figure 2 9 When a Terminator is Used BC56H 03 BC09D 03 BS19J 1E BC19J 1E BC19J 1E HOST TK50Z RRD40 RZ23 RWZ01 TERMINATOR UNIT CS 8689 e Set to DISABLE when the RWZOI is not the terminating unit see Figure 2 10 Figure 2 10 When a Terminator is not Used BC56H 03 BC09D 03 BC19J 1E BC19J 1E BS19J 1E HOST TK50Z RRD40 RWZO1 RZ23 TERMINATOR UNIT CS 8684 2 14 System Description of the RWZO1 4 TERMINATOR Default is DISABLE This switch controls the use of the RWZOI built in terminator When the RWZOI is the terminating unit see Figure 2 9 set the switch to ENABLE e When the RWZOI is not the terminating unit see Figure 2 10 set the switch to DISABLE 5 PARITY Default is ENABLE When set to ENABLE the RWZOI performs parity checking This switch must be set to ENABLE 2 5 2 Setting a SCSI ID Number Use the three ID SELECT switches 6 through 8 to set the SCSI ID number 0 through 7 of the RWZOI For these switches up ID SELECT
5. Computer System Interface SCSI ANSI X3 131 1986 CCS Rev 4B A 2 Specifications of the Disk Model name Disk RWX1K 01 512 bytes sector External specifications e Disk external diameter 130 nm 5 12 inch e Hub external diameter 25 mm 0 98 inch e Disk cartridge measurement e Width 135 mm 5 31 inch e Depth 153 mm 6 02 inch Specifications A 3 e Thickness 11 mm 0 43 inch e Weight 155 g 0 34 Ibs Environmental conditions Format During operation Temperature 10 to 50 C Temperature graduation 10 C hour or less Relative humidity 10 to 9096 no condensation Non operation Humidity 10 to 50 C Temperature graduation 15 C hour or less Relative humidity 10 to 9096 no condensation User area 30 to 60 mm radius 0 12 to 0 24 inch Number of tracks 18751 side Number of sectors 31 Track mode Spiral Track pitch 1 6 micrometer Rotational direction CCW Storage capacity formatted exdudes alternate areas Per disk 590 MB Per side 295 MB Data can be stored on both sides Total storage capacity unformatted Per disk 867 MB Per side 433 5 MB A 4 Specifications Appendix B Parts List The tables in this appendix include a parts list for the RWZO1 a SCSI cable list and a power cord list Table B 1 RWZ01 Parts List Part name Order number Source Magneto Optical Disk Subsystem RWZO1 AA RWZO1 Magneto Optical Disk Subsystem EK RWZ01 UG User s Gui
6. FANSCEAU CLASS 1 LASER PRODUCT TO IEC 825 LASER KLASSE 1 PRODUKT NACH IEC 825 CLASS 1 LASER PRODUCT TO IEC 825 LASER KLASSE 1 PRODUKT NACH IEC 825 This label is affixed inside this unit This MO Disk Unit is classified as a CLASS 1 LASER product The CLASS 1 LASER PRODUCT label is located on the bottom exterior Bei diesem MO Laufwerk handelt es sich um ein Laser Produkt der Klasse 1 Ein Aufkleber mit der Beschriftung CLASS 1 LASER PRODUCT befindet sich an der Ger teunterseite vii viii NOTICE THIS NOTICE IS APPLICABLE FOR USA AND CANADA ONLY shipped to USA use the UL LISTED power cord specified below tt shipped to CANADA use the CSA CERTIFIED power cord specified below DO NOT USE ANY OTHER POWER CORD For 100 120 V Plug Cap Parallel blade with ground pin NEMA 5 15P Configuration Cord Type SVT or SJT three 16 or 18 AWG wires Length Maximum 15 feet Rating Minimum 10 A 125 V For 220 240 V Plug Cap Tandem blade with ground pin NEMA 6 15P Configuration Cord Type SVT or SJT three 16 or 18 AWG wires Length Maximum 15 feet Rating Minimum 10 A 250 V REMAROE CETTE REMARQUE NE CONCERNE QUE LES ETATS UNIS ET LE CANADA En cas d envol aux Etats Unis n utiliser que le cordon d alimentation inscrit sur LISTE UL et sp cifi ci dessous pour utilisation En cas d envol au CANADA n utiliser que le cordon d alimentation CERTIFIE par CSA et sp cifi ci dessous pour utilisation
7. Setting ID number 2 9 Shock and vibration 4 1 Slide servo submodule 2 3 Small Computer System Interface see SCSI Special file ULTRI X 2 17 Specifications A 1 electrical A 2 environmental conditions A 1 error rate A 3 external measurement A 1 loading time A 3 seek time A 2 storage capacity A 2 transmission speed A 3 Index 5 Specifications disk A 3 environmental conditions A 4 external A 3 format A 4 rotation A 2 storage capacity A 4 Speed transmission A 3 Spindle motor 3 3 Spindle servo submodule 2 3 Storage capacity A 2 Storage capacity disk A 4 Storage disk 4 3 Structure see Internal structure Switches ac power 2 9 DATA PROTECT 3 3 4 3 ID number 2 9 TERMINATOR 2 9 TERMINATOR POWER 2 9 Switchpack switches 2 8 AUTO SPIN UP 2 13 checking ID number 2 11 MANUAL EJECT 2 13 operating parameters 2 13 PARITY 2 15 setting of 2 12 setting SCSI ID 2 12 TERMINATOR 2 14 TERMINATOR POWER 2 13 System configuration 1 2 2 11 see also SCSI with VAXstation 3100 2 11 T Temperature Curie D 2 Terminating Unit 2 15 TERMINATOR 2 14 TERMINATOR POWER 2 13 TERMINATOR POWER switch 2 9 Terminator unit 2 13 Theory of laser optical disks D 1 Indec6 Tracking servo submodule 2 3 Transmission of data 1 1 Transmission speed A 3 Transmission speed of data maximum in M ESDI section 2 4 maximum in SCSI section 2 4 U ULTRIX changing partition sizes 2 1
8. The laser diode is used to erase and read data from the disk and to write data to the disk Laser Diode Driver Data Separation Module This module has two major areas Using an automatic power control APC unit the laser diode drive sets the power level This power level is set according to the operating mode erase write or read APC tests the output of Write and Erase of the automatic laser power control ALPC area and maintains the required output level e Photo detector output signals are divided into two different bandwidth signals for the data separation and the servo systems TheRF signal is differentially amplified for peak detection of data and is equalized The phase locked oscillator PLO generates a phase locked clock to separate data A demodulator uses the PLO to decode the 2 7 run length limited RLL Servo Module This module has four submodules e Spindle Servo Submodule This submodule rotates the disk at 2400 rpm using a digital frequency lock servo method Focus Servo Submodule This submodule focuses a laser beam on the disk writing surface by controlling the dual axis actuator using the astigmatism focus service method This quickly de termines the laser spotting position in the track of the disk for reading and writing Tracking Servo Submodule This submodule controls a dual axis actuator and follows a track on the disk using the differential push pull DPP servo method Slide Servo
9. bus management and generates addresses to buffer memory The data to and from the buffer memory module is exchanged in direct memory access DMA mode The buffer memory manager adjusts DMA requests according tothe priority of each DMA channel 3 Buffer Memory Module This module consists of SRAM of 64K bytes Only user data is stored in both the read mode and the write mode 4 SCSI Control Module This module controls a SCSI bus and transfers data to and from the internal bus The SCSI conforms to ANSI SCSI standard X3 131 1986 User data is transferred to and from the buffer memory in DMA mode 5 Drivelnterface Control Module This module consists of the M ESDI and an address detector The M ESDI controls handshaking to the transfer command and the status The read write data is converted to serial parallel or parallel serial format The address detector checks the ID by calculating cyclic redundancy check 6 ECC Syndrome Generator Module This module encodes Reed Solomon Long Distance Code and CRC in real time during the write operation and generates the syndrome during the read operation The error correction is performed by the MPU 7 Bus Control Logic Module This module has two sections One section is used to switch either the Buffer Data Memory bus or the MPU bus to the SCSI controller The other section selects bus data from user data control data or ECC CRC data 2 6 System Description of the RWZOL 2 1 3 Front Vi
10. deaning cartridge kit 4 2 4 3 B 1 Linear replacement algorithm D 5 D 6 defective sectors D 6 Loading module 2 3 Loading time A 3 Location for installation 4 1 Long Distance Code 1 2 2 6 M Magneto optical disks theory of D 1 Maintenance 4 1 Manual eject 2 7 MANUAL EJECT 2 13 MDA control module 2 4 Measurement external A 1 MEDIUM ERROR 3 6 Messages additional sense code status 3 7 sense key status 3 6 Microprocessor module 2 5 Modulation code D 4 Modules bias magnet control 2 3 buffer memory 2 6 buffer memory manager 2 6 bus control logic 2 6 drive interface control 2 6 ECC Syndrome generator 2 6 IOP control 2 4 laser diode 2 3 loading 2 3 MDA control 2 4 microprocessor 2 5 MPU control 2 3 optical head 2 3 Indec4 Modules cont d SCSI control 2 6 servo 2 3 Moving precautions 4 2 MPU see Microprocessor module MPU bus 2 6 MPU control module 2 3 N NO SENSE 3 6 NOT READY 3 6 O Operating parameters setting of 2 13 Operation for DECstation 3 13 Optical head deaning of 4 1 4 2 4 3 Optical head module 2 3 P PARITY 2 15 Parity checking 2 15 Parts list A 4 Phase locked dock 2 3 Polarized lens D 3 Power connector ac input 2 8 Power control automatic laser 2 3 Power cords list B 2 Power failure 3 1 Power level 2 3 Power requirements A 2 POWER supply indicator 2 7 Power switch ac 2 9 Preformatted triple ID D 4
11. disk failure 04H HARDWARE ERROR The disk drive controller detected a hardware error 05H ILLEGAL REQUEST An incorrect parameter was used in the command descriptor block CDB or additional parameter that is used as command data 06H UNIT ATTENTION A disk was loaded a unit was reset or the MODE SELECT parameter was changed 07H DATA PROTECT Data cannot be written because the disk is set to DATA PROTECT OAH COPY ABORTED A failure occurred in the copy source or copy destination or in both and the COPY or the COPY AND VERIFY would not execute 3 2 4 Additional Sense Code Status Messages The additional sense code collects status messages on the disk state and other errors How to HandleFailures 3 7 Table 3 3 Additional Sense Codes Additional Sense Additional Sense Code Code Status Cause OOH No Additional Sense No error Information NO SENSE 02H No M ESDI Command A completion error of the Complete HARDWARE M ESDI command was not ERROR returned from the drive 03H Write Fault HARDWARE The WRITE command could ERROR not be executed The address of the logical block from which the error occurred is returned as the logical block address area or sense data information byte area 04H Drive Not Ready NOT The READY signal of M ESDI READY was dropped the disk in the drive did not rotate or the lock servo feature of the focus or slide was unlocked 05H Drive Not Selected NOT The disk drive was not selected R
12. the section are magnetized in the write polarity data is stored Figure D 1 Principle of Writing Data to a Disk LASER BEAM N OF DIRECTION OF Tuum PASSER FIELD FIELD ENSEENEEE ERASING MAGNETIC FIELD STORING DATA N S er CS 8732 D 2 Theory of Laser Optical Disks D 1 2 Read Principle To read data the laser beam direct polarization is applied to the section to be read see Figure D 2 The polarization angle of the light reflected varies according to the polarity of the magnetic field Therefore data is read by sensing the varying brightness of the light due to the differences of polarization angles The optical detector uses a polarized lens Figure D 2 Principle of Reading Data from a Disk POLAROID OPTICAL POLAROID OPTICAL LENS DETECTOR LENS DETECTOR DIRECTION OF DIRECTION OF VIBRATION VIBRATION LASER BEAM DIRECTION OF MAGNETIC FIELD DIRECTION OF MAGNETIC FIELD CS 8734 D 2 Disk Format The disks are formatted as shown in Figure D 3 Each sector consists of 512 bytes and the storage capacity of one side of the disk is 297M bytes 594M bytes both sides However since alternate areas are allocated the area that can be accessed by users is 295M bytes on one side 590M bytes on both sides The track is of the spiral type Theory of Laser Optical Disks D 3 Figure D 3 Disk Format TRACK 2 18 750 TRACK 0 TRACK n SECTOR 512 BYTES i N V
13. voltage in the European countries Do not connect to an ac power line that indudes a large power consumption device such as a copier or shredder Shock and vibration The RWZOI is susceptible to damage from shock or vibration Installation location Operate the RWZOI in the horizontal position a failure may occur otherwise Do not operate or store the RWZOI in locations with the following conditions see Appendix B Specifications Severe temperatures changes Maintenance 4 1 Direct sunlight Strong magnetic field or gas Electrostatic or noise discharges High humidity Dust Airflow Do not place the RWZ01 in a location with poor airflow Do not cover the cooling air intake or discharge ducts e Condensation Avoid sudden temperature change to avoid condensation Remove a disk as soon as condensation is suspected To remove condensation within the unit turn the RWZOI power on without inserting a disk e Moving Do not move the RWZ01 during operation because the disk is rotating at a high speed and may be damaged Stop the operation remove the disk and then move the RWZOL e Handling failure If a failure occurs remove the ac power cable from the power source and refer to Chapter 3 e Cleaning an optical head Dirt on the lens of the optical head can cause a read or write error See Section 4 3 for information on using the lens cleaning cartridge Notes 1 Use an RWX1
14. 3 2 5 2 Setting a SCSI ID Number 2 15 Changing the etc disktab File ULTRIX 2 16 Creating the Special File ULTRIX 2 17 ix 2 8 Changing Partition Sizes ULTRIX 2 17 Chapter 3 How to Handle Failures 3 1 gt General Failures syne pes he Pe last 3 1 3 2 Error Codes s s cca vache c genie te bat inte 3 5 3 2 1 Operation for VMS 3 5 3 2 2 Operation for ULTRIX 3 6 3 2 3 Sense Key Status Messages 3 6 3 2 4 Additional Sense Code Status Messages 3 7 3 3 VAXstation ROM Diagnosis Test 3 13 3 4 Operation for DECstation 3 13 Chapter 4 Maintenance 41 Cautions on USse 4 1 42 Disks an a wre Mad Bad a a ee f 4 3 4 2 1 Data Protection Switch Tab 4 3 4 2 2 Condensation 2223 26 400 s PAIR ne Dal Bel FR PETE 4 3 4 2 3 Disk Storage A nern ar ae ee dies 4 3 4 3 Cleaning an Optical Head 4 3 Appendix A Specifications A l Specifications of the RWZO1 A 1 A 2 Specifications of the Disk A 3 Appendix B Parts List Appendix C Regulations CT Safety i nee eh Bis Mantes ttes D Ste nu C 1 C2 EMC Skaar Dar X le C 1 Appe
15. 3 3 TRACK 4 SECTOR 4 4 TRACK 4 SECTOR 5 5 TRACK 4 SECTOR 6 6 TRACK 4 SECTOR 7 X DEFECTIVE SECTOR TRACK 4 SECTOR 8 CS 8769 D 5 2 Linear Replacement Algorithm Through this algorithm the defective sectors detected during the write operation are reallocated into the spare areas which are located at each data band The intermediate address space which excludes defective sectors listed in the PDL can be divided into several bands of the same size as shown in Fig D 5 Each band consists of user and a spare band located at the end of the user band Unless any reallocation is performed after the formatting the logical block addresses are always allocated to the user bands When a defective sector is detected during the write operation by the RWZOL that defective sector is reallocated automatically into the spare sectors within the same band If there are no spare sectors left within the same band then all remaining defective sectors are reallocated into the spare band of the nearest band D 6 Theory of Laser Optical Disks Figure D 5 Structure of Bands Linear Replacement Algorithm USER BAND SPARE BAND UNUSED CS 8770 Theory of Laser Optical Disks D 7 Index A AC input power 4 1 AC input power connector 2 8 AC power switch 2 9 Additional sense code 3 6 status messages 3 7 Air exhaust ducts 2 8 Air intake duct 2 7 Airflow 4 2 AUTO SPIN UP 2 13 Automatic laser power control 2 3 Automatic pow
16. 60 C Temperature graduation 15 C hour or less Relative humidity 5 to 90 no condensation e Vibration 1G or less e Shock 60G or less 3 ms half sine wave 20G or less 28 ms rectangular wave Electrical specification e Power requirements e U S A and Canada 100 to 120 Vac 50 60 Hz European countries 220 to 240 Vac 50 60 Hz e Current drain e U S A and Canada 0 45 A max European countries 0 3 A max Storage capacity formatted exduding alternate areas e Per disk 590 MB 512 bytes sector e Per side 295 MB 512 bytes sector Total storage capacity unformatted e Per disk 867 MB e Per side 433 5 MB Rotation e Rotational count 2400 rpm CAV Average wait time 12 5 ms Bias magnet rotation speed 18 ms average Seek time rotational delay excluding SCSI overhead e Per track 10 ms average e Short stroke 22 ms average 64 tracks Average 95 ms 1 3 full stroke A 2 Specifications e Maximum 185 ms Transmission speed Data transmission speed 7 40 MB s User data transmission speed Transmission speed 640 KB s Burst transmission speed 1 2 MB s maximum Loading time e Loading time 6 4 s average e Unloading time 3 6 s average Error rate e Read error rate Unrecoverable 1 x 10 12 times bit e Seek error rate 1 x 10 times two retries Others Laser e Method Semiconductor laser GaAlAs Wavelength 785 nm Maximum output 30 mW e Host interface Small
17. 7 error codes 3 6 SCSI ID operation 2 12 special file 2 17 UNIT ATTENTION 3 7 User data transmission speed A 3 V VAXstation diagnosis test 3 13 Vibration and shock 4 1 VMS SCSI ID operation 2 12 Volumes disk 4 3 W Write cyde time 4 2 Write enable 4 3 Write error 4 2 Write principle D 2 Write protect 4 3 Writing data 1 2 diga Printed in Japan
18. AXELN VAXstation VAX VMS DE Cstation The DIGITAL Logo This document was prepared using VAX DOCUMENT Version 2 0 WARNING To prevent fire or shock hazard do not expose the unit to rain or mois ture To avoid electrical shock do not open the cabinet Refer servicing to qualified personnel only FCC USER STATEMENT NOTICE This equipment generates uses and may emit radio frequency energy The equipment has been type tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC rules which are designed to provide reasonable protection against such radio frequency interference Operation of this equipment in a residential area may cause interference in which case the user at his own expense will be required to take whatever measures may be required to correct the interference This apparatus complies with the Class A limits for radio noise emissions set out in Radio Interference Regulations of Canada CORR SL Mitt OBR H P Yar ZEREZ Metre Geren This device complies with the standard of Information Device Wave Failure Self Regulation Association VCCI to prevent wave failure occuring in the Type 1 information devices information devices used in the commerical and industrial areas Therefore if the device is used in a location adjacent to residential areas reception problems may occur in radio or television receivers The device must be handled correctly accordin
19. EADY 07H Multiple Drives Selected Multiple disk drives return the HARDWARE ERROR same drive ID number 08H Logical Unit Communication An error occurred while Failure HARDWARE disk drive control was being ERROR exchanged with the drive 09H Track Following Error The optical head is not set in HARDWARE ERROR the same track OAH No Disk NOT READY A disk is not inserted OBH Load Unload Failure A failure occurred when a disk HARDWARE ERROR 3 8 How to Handle Failures was being loaded or unloaded Table 3 3 Cont Additional Sense Codes Additional Sense Additional Sense Code Code Status Cause OCH Spindle Failure HARDWARE The spindle motor is not locked ERROR by a referenced signal and the disk does not rotate correctl y ODH Focus Failure HARDWARE The focus servo feature is not ERROR operating normally Set the START bit and restart the drive by issuing START STOP UNIT command OEH Tracking Failure HARD The tracking servo feature WARE ERROR cannot be locked OFH Bias Magnet Failure Bias magnet failure in the drive HARDWARE ERROR 10H ID CRC Error HARDWARE The controller detected an ID ERROR CRC error from the drive 11H Unrecovered Read Error A data error could not be of Data Blocks MEDIUM corrected by an error correction ERROR code The logical block address where the error occurred is returned with the logical block address area or sense data information byte area 15H Seek Positioning Error Seek c
20. K 01 disk with the RWZOL 2 Executethe DISMOUNT unmount command before remov ing a disk see the RWZO1 Magneto Optical Disk Subsystem User s Guide Removing a disk while data is being written to the disk interrupts the operation 3 In the RWZO1 new data is written after old data is deleted Therefore the time required for reading is different from that for writing A write cycle requires more time than a read cyde 4 2 Maintenance 4 2 Disk Use side A and side B of the disk as separate volumes The disk is inserted into the drive with the label of the side used facing up 4 2 1 Data Protection Switch Tab This red switch is used to set protection from writing data on the disk see Figure 3 2 To disable writing of data to the disk slide the switch in the direction of the arrow To enable writing of data on the disk slide the switch in the direction opposite to the arrow 4 2 2 Condensation The disk drive may not operate properly if there is condensation inside the disk drive Avoid using the RWZOI in locations with large tempera ture variation or high humidity 4 2 3 Disk Storage Observe the following in storing disks e Store the disk in the plastic case provided e Dono store disks in a dusty or humid place under direct sunlight or near a heater Do not place disks on a dashboard or tray in a car e Do not place disks in a place affected by a strong magnetic field or by any volatile gas e Donct leave a d
21. NUMBER OF SECTORS 31 NUMBER OF USER TRACKS 0 TO 18 750 512 BYTES PER SECTOR CS 8737 D 3 Format Specifications The RWZOI1 complies with ISO DIS 10089 type A the Continuous Composite Format of 130 mm Rewriteable Optical Disk Standard D 3 1 Modulation Code The RWZ01 implements 2 7 RLL as the modulation code D 3 2 Sector Format The ID field contains the preformatted triple IDs and the data field contains 512 bytes of user data For more information about sector format refer to ISO DIS 10089 17 2 Sector Format D 4 Theory of Laser Optical Disks D 4 Data Field Format The data field consists of 512 bytes of user data 12 bytes of control information 4 bytes of cyclic redundancy check CRC data 80 bytes of error detection and correction EDAC data 2 bytes of reserved data and 40 bytes of RESYNC pattern For more information about data field format refer to ISO DIS 10089 Annex G Interleave CRC ECC RESYNC for Data Field D 5 Defect Management Strategies The defect management strategies of the RWZO1 follows ISO DIS10089 To replace defective sectors with alternate sectors the RWZOI uses two kinds of algorithm Sector Slipping Algorithm e Linear Replacement Algorithm The Sector Slipping Algorithm handles defective sectors which are known before or detected during the formatting process The Linear Replacement Algorithm handles defective sectors that are detected after the formatting process The defective
22. Principle of reading data D 1 Principle of writing data D 1 Processing input output 2 4 R RAM sections of 2 5 Read cydetime 4 2 Read error 4 2 Read error rate A 3 Read prindple D 3 Reading data 1 2 Read Write data 2 6 conversion of 2 6 RECOVERED ERROR 3 6 Regulations EMC C 1 safety C 1 Removing a disk 2 7 emergency removal 2 7 RF signal 2 3 ROM diagnosis test DECstation 3 13 VAXstation 3 13 Rotation of disk A 2 S Safety precautions ac input power 4 1 cleaning optical head 4 2 condensation 4 2 4 3 cooling 4 2 installation location 4 1 moving 4 2 shock and vibration 4 1 Safety regulations C 1 SCSI cable 2 9 cable list B 1 connector 2 9 control module 2 6 controller 2 4 controller section 2 1 device not recognized 3 2 features of 1 1 ID number 2 12 2 16 power 2 13 SCSI cont d setting ID number 2 8 2 16 terminator 1 2 2 11 2 13 SCSI bus 1 1 1 2 2 6 2 8 2 9 2 11 SCSI ID operation for ULTRIX 2 12 operation for VMS 2 12 Sector format D 4 Sector slipping algorithm D 5 defective sectors known D 5 FORMAT UNIT command D 5 Sectors defective D 5 Seek error rate A 3 Seek time 1 2 Seek time of disk A 2 Sense key 3 5 Sense key status messages 3 6 COPY ABORTED 3 7 DATA PROTECT 3 7 HARDWARE ERROR 3 7 ILLEGAL REQUEST 3 7 MEDIUM ERROR 3 6 NO SENSE 3 6 NOT READY 3 6 RECOVERED ERROR 3 6 UNIT ATTENTION 3 7 Servo module 2 3
23. R 3 6 sense key status messages 3 6 ULTRIX 3 6 UNIT ATTENTION 3 7 Error correction 1 2 2 6 using Long Distance Code 1 2 Error log 3 5 additional sense code 3 6 EXTENDED SENSE DATA 3 5 sense key 3 5 Error rate A 3 EXTENDED SENSE DATA 3 5 External measurement A 1 External specifications disk A 3 F F GND pin 2 8 Failures see General failures Features 1 1 Continuous Composite Servo 1 1 data transmission 1 1 disk capacity 1 1 disk format 1 1 error correction 1 2 SCSI bus 1 1 seek time 1 2 Focus servo submodule 2 3 Format data field D 5 disk 1 1 A 4 D 3 Format cont d sector D 4 specifications D 4 FORMAT UNIT D 5 G General failures 3 1 to 3 5 abnormal noise 3 3 cannot insert disk 3 2 cannot mount disk 3 3 cannot read data 3 3 cannot remove disk 3 2 cannot write data 3 3 device not recognized 3 2 handling 4 2 ID number duplication 3 2 no power 3 1 spindle motor does not rotate 3 3 H HARDWARE ERROR 3 7 Heat release see Cooling ID number 2 9 checking of 2 11 duplication of 3 2 examples of 2 11 ID SELECT switches 2 15 setting of 2 12 2 15 switch settings 2 16 ID operation see SCSI ID ILLEGAL REQUEST 3 7 Input output processing 2 4 Installation location 4 1 Interface connector 2 8 Internal structure 2 1 disk drive section 2 1 Index 3 IOP control module 2 4 L Laser diode module 2 3 Laser optical disks D 1 Lens
24. RWZ01 Magneto Optical Disk Subsystem ol ol al A Maintenance Guide Part Number EK RWZ01 MG 002 RWZ01 Magneto Optical Disk Subsystem Maintenance Guide Part Number EK RWZ01 MG 002 Prepared by U S Area EIC Documentation Services Digital Equipment Corporation Merrimack NH 03054 J une 1991 The information in this document is subject to change without notice and should not be construed as a commitment by Digital Equipment Corporation Digital Equipment Corporation assumes no responsibility for any errors that may appear in this document The software described in this document is furnished under a license and may be used or copied only in accordance with the terms of such license No responsibility is assumed for the use or reliability of software on equipment that is not supplied by Digital Equipment Corporation or its affiliated companies Restricted Rights Use duplication or disdosure by the U S Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software dause at DFARS 252 227 7013 Copyright 1991 by Digital Equipment Corporation All Rights Reserved Printed in J apan The postpaid READER S COMMENTS form on the last page of this document requests the user s critical evaluation to assist in preparing future documenta tion The following are trademarks of Digital Equipment Corporation DEC VAXBI VT DECUS VAXduster ULTRIX PDP V
25. Submodule This submodule drives a slide motor flat linear motor to access the desired track Bias Magnet Control Module This module reverses the bias magnet to provide a bias magnetic field for erasing that has an opposite magnetic field to that for writing to the disk Loading Module This module consists of a loading motor and the disk insertion and disk ejection switches System Description of the RWZOL 2 3 6 MPU Control Module This module microprocessor unit includes a microprocessor micro PD78310 32K bytes of programmable ROM PROM and 8K bytes of RAM This module controls the analog modules the mechanical modules and the modified enhanced small device interface M ESDI Most of the control lines are transferred via the control section of the input output processing IOP side however a part of the service control signal is directly connected to the MPU A real time monitor program manages each control 7 OP Control Module This module input output processing provides a control line to the bias magnetic controller module and the loading mechanism module This module also controls handshaking between the disk drive and the M ESDI 8 MDA Control Module This module modulation and demodulation address decoder includes an address decoder and an 2 7 RLL encoder decoder The encoded channel clock rate is 14 797 MHz at 2400 rpm SYNC and RESYNC in the format are encoded in this module The MDA provides a co
26. V Certification according to IEC825 VDE 0837 C 2 EMC e FCC47 cfr Part15 Subpart Class A e DOC SOR 88 475 Class A e VDE0871 B Class B VDE 0875 Class N e VCCI Class 1 Information Technology Equipment Regulations C 1 Appendix D Theory of Laser Optical Disks This appendix describes thetheory of magneto optical disks and includes information on the following e Principles of reading and writing to the disk Disk format and format specifications Data field management Defect management D 1 Principle of Writing Data to and Reading Data from a Disk The magneto optical disks are formed by putting four layers of magnetic substance and a protection film on a polycarbonate base material This magnetic substance is easily magnetized in the vertical direction from the film surface Theory of Laser Optical Disks D 1 D 1 1 Write Principle In the RWZOI new data is written after the area to be written to is erased set to all zeros 1 The directions of the magnetic fields are set see Figure D 1 by providing an erasing magnetic field or a writing magnetic field while heating the section with a laser beam 2 For erasing the disk a weak magnetic field is applied in the erase polarity and the laser beam is set to raise the temperature of the section to Curie temperature temperature at which a magnetic substance loses its magnetic power 3 Towrite data the laser beam power is reduced and the bits ones in
27. as set set the SCSI ID number of the RWZO1 again First turn off the ac power to all the devices on the SCSI bus 2 4 2 Operation for ULTRIX Confirm the connected device See the appropriate ULTRIX System Manual for the console command 2 5 Setting Switchpack Switches Switches 1 through 5 DISABLE up or ENABLE down the RWZO1 functions they control Switches 6 through 8 set to 1 up or 0 down to set the SCSI ID number of the RWZOI see Figure 2 8 If the RWZOI is connected to the SCSI bus disconnect the ac power to all the SCSI devices on that SCSI bus before changing the switch settings 2 12 System Description of the RWZO1 2 5 1 Setting Switches for Operating Parameters When delivered from the factory switches 1 through 3 and 5 are set to ENABLE down and switch 4 is set to DISABLE up The fundion of switches 1 to 5 are described in the following Figure 2 8 Setting the RWZ01 Switchpack Switches PARITY TERMINATOR TERMINATOR POWER MANUAL EJECT AUTO SPIN UP 1 r 1 1 D SELECT DISABLE 9 9 9 9 9 2 EEE ENABLE e e e e e e e e Oo e a3 om e o CS 8682 1 AUTO SPIN UP 1 The default is ENABLE When enabled this switch sets the spindle motor motor that rotates the disk so that it rotates automatically when you insert a disk 2 MANUAL EJ ECT 2 The default is ENABLE When enabled this switch enables the EJ ECT button for removing a disk
28. cause and action to be taken when a failure occurs in the RWZOI Chapter 4 Maintenance Describes how to clean disks and lenses in the RWZO1 Appendix A Theory of Laser Optical Disks Describes the write and read operations in optical laser disks and defect management strategies Appendix B Specifications Provides a summary of specifications of the RWZOI disks and attachments Appendix C Parts List Lists the parts available for the RWZOI Disk Drive xiii Appendix D Regulations Lists the regulations with which the RWZOL is compatible How to Use This Manual Read Chapter 1 to understand the outline and principle of the RWZO1 Then read Chapter 2 to become familiar with the internal structure and the name and function of each part of the RWZOI If a failure occurs read Chapter 3 to diagnose the cause Read Chapter 4 for regular maintenance of the RWZO1 The RWZOI can be installed by a customer using the RWZO1 Magneto Optical Disk Subsystem User s Guide Use the appendices as required Intended Audience This manual is intended for Digital Customer Service personnel who are to maintain the RWZO1 Related Manuals The following related manuals are available for the RWZO1 VAXstation Maintenance Guide RWZO1 Magneto Optical Disk Subsystem User s Guide Lens Cleaning Cartridge User s Manual The following manuals provide additional information on the envi ronment in which the RWZOI Disk Drive is used and may h
29. d Field in Parameter The parameter received List ILLEGAL REQUEST 3 10 How to Handle Failures contains an error Table 3 3 Cont Additional Sense Codes Additional Sense Additional Sense Code Code Status Cause 27H Write Protected DATA Data can neither be erased nor PROTECT written because the disk is set to a DATA PROTECT state 28H Medium Changed UNIT A disk was loaded This ATTENTION code informs you if a disk was replaced after the last command was executed This code indicates that the MODEL SELECT parameter was changed 29H Power On or Reset or Bus This code informs you if the Device Reset Occurred UNIT device was reset after the ATTENTION last command was executed This code indicates that a change was made to the MODE SELECT parameter 2AH Mode Select Parameters This code informs you if the Changed UNIT ATTEN MODE SELECT parameter was TION changed after the last command was executed 30H Incompatible Cartridge The disk ID type is incorrect MEDIUM ERROR 31H Medium Format Corrupted Phase encode PED part of the MEDIUM ERROR control tracks PED Standard Formatted Part SFP of the control tracks SF P a format information sector in the command descriptor address CDA or definition structure DDS is incorrect How to Handle Failure 3 11 Table 3 3 Cont Additional Sense Codes Additional Sense Additional Sense Code Code Status Cause 32H No Defect Spare Location The numbe
30. de Optical disk cartridge RWX1K 01 O Lens cleaning cartridge kit RWXIH AA O Lens Cleaning Cartridge User s Manual EK RWX1H UG Source Part of the basic RWZ01 O Available as an option Provided with a lens cleaning cartridge kit RWX1H AA Parts List B 1 Table B 2 SCSI Cable List Connection Order number Source MicroVAX 3100 RWZO1 BC56H 03 3 feet O VAXstation 3100 RWZO1 DECstation 2100 RWZO1 DECstation 3100 RWZO1 DECstation 5000 RWZO1 BCO9D 03 3 feet RWZ01 RWZO1 BC19J 1E 1 5 feet O Source Part of the basic RWZOI O Available as an option Provided with DECstation 5000 Table B 3 Power Cords List Order number Description Source BN19A 2E UK Ireland 240 Vac O BN19C 2E Central Europe 220 Vac O BN19E 2E Switzerland 220 Vac O BN19H 2E Australia New Zealand 240 230 Vac O BN19K 2bE Denmark 220 Vac O BN19M 2E Italy 220 Vac O BN19S 2E India South Africa 220 Vac O BN19U 2E Israel 240 Vac O Austria Belgium Finland France Germany Holland Norway Portugal Spain Sweden Source Part of the basic RWZO1 O Available as an option B 2 Parts List Appendix C Regulations This product meets the following safety and EMC regulations C 1 Safety e UL478 5th Edition e UL1950 1st Edition e CSA22 2 No220 e DHHS Laser Compliance 21 CFR Subchapter J Class 1 e TUV Certification according to IEC380 V DE 0806 e TUV Certification according to IEC950 e TU
31. e key errors are shown in byte 2 of EXTENDED SENSE DATA which contains the cause of the sense data error How to HandleFailures 3 5 Additional sense code errors are shown in byte 12 of the EXTENDED SENSE DATA This byte contains error information and the state of the RWZOI The following example is the extract of the sense data recorded in the error log of VMS 3 2 2 Operation for ULTRIX 2 gt EXTENDED SENSE gt gt 00060070 gt 06 is SENSE KE gt OC000000 gt 00000029 gt 29 is ADDITIO Y AL See Table 3 2 SE NSE CODE See Table 3 3 To read the ULTRIX error log enter the following etc uerf For more information about uerf 8 see the ULTRIX Guide to Error Logger System or ULTRIX Reference Pages 3 2 3 Sense Key Status Messages Sense key status messages show the cause of sense data errors These are listed in Table 3 2 Table 3 2 Sense Keys Sense Key Sense Key Status Cause 00H NO SENSE The command executed terminated normally no error No sense key status was issued by the logical unit 01H RECOVERED ERROR As a result of the RWZO1 error recovery the command terminated normally 02H NOT READY The logical unit could not be 3 6 How to Handle Failures accessed Table 3 2 Cont Sense Keys Sense Key Sense Key Status Cause 03H MEDIUM ERROR A command was terminated without being recovered from an error due to a
32. ed 2 8 System Description of the RWZOL 5 AC input power connector This connects to the ac input supply with the 3 pin with ground power cable AC power switch This switch turns the ac power on or off 2 2 Connecting the RWZ01 When making any connections to the RWZOI see Figure 2 5 observe the following Disconnect the power supply to the host computer and the RWZOI before making the connection To disconnect the power supply press the O side and to connect power supply press the side of the ac power switch A maximum of eight SCSI devices can be connected through the SCSI bus including a host computer Do not exceed a total length 6 m of SCSI cable connected to one host computer Set the switches so that the device ID number of the RWZ01 is not duplicated with the ID number of some other SCSI device Set the TERMINATOR and TERMINATOR POWER switches to ENABLE when the RWZOI is the last SCSI device to be connected See Section 2 5 Setting Switchpack Switches Connect the SCSI connector to the RWZOI using a connector latch metal fitting System Description of the RWZOL 2 9 Figure 2 5 Connection of the RWZ01 SWITCHPACK SWITCHES AC POWER SWITCH SCSI scsi CABLE CABLE AC POWER SOLD SOLD CABLE SEPARATELY SEPARATELY TO ANOTHER TOHOST jf TOAC POWER SCSI DEVICE COMPUTER SOURCE CS 8681 2 10 System Description of the RWZO1 2 3 System Configuration You can connect
33. elp in your understanding of this manual Owner s Manual User s Guide of each host computer VMS System Manager s Manual ULTRIX Guideto Disk Maintenance ULTRIX Reference Volume ULTRIX Guideto Error Logger DECstation Operator s Guide xiv Conventions The following conventions are used in this manual Table 1 Notes Cautions Warnings Documentation NOTE CAUTION WARNING Calls the attention to any item of information that may be of special importance to the reader Contains essential information to avoid damage to the equipment Contains essential information for the safety of the user Table 2 Cautions Warnings Safety DANGER WARNING CAUTION ATTENTION NOTE Serious injury or death is imminent if you continue in this direction Injury is imminent if you continue in this direction Injury is possible if you continue in this direction Damage to the equipment can occur if you continue in this direction Figure 1 The RWZ01 Disk Drive CS 8731 Chapter 1 Overview 1 1 This chapter contains an overview of the features and functions of the RWZ01 Disk Drive see Figure 1 Features The RWZOI Disk Drive is an external storage device that uses high capadty removable disks and has the following features A write read disk that uses magneto optical recording with a multiple write capability A high information capacity disk which has 590M bytes 512 bytes sector exc
34. er control 2 3 B Bias magnet control module 2 3 Buffer data memory 2 6 Buffer memory manager module 2 6 Buffer memory module 2 6 Built in terminator 2 14 Bus control logic module 2 6 BUSY indicator 2 7 C Capacity of disk 1 1 Capacity storage A 2 Cautions on use 4 1 Changing switch settings 2 12 Cleaning an optical head 4 3 Components front 2 7 air intake duct for cooling 2 7 BUSY indicator 2 7 disk insertion entrance 2 7 EJ ECT button 2 7 emergency eject hole 2 7 POWER supply indicator 2 7 Components rear 2 8 ac input power connector 2 8 ac power switch 2 9 air exhaust ducts 2 8 F GND pin 2 8 interface connector 2 8 switchpack switches 2 8 Condensation 4 2 4 3 Conditions environmental A 1 Configuration see System configuration Connections power supply 2 9 SCSI 2 8 SCSI cable 2 9 SCSI devices 2 9 Connector ac input power 2 8 interface 2 8 SCSI 2 9 Continuous Composite Servo 1 1 Control Index 1 Control cont d automatic laser power 2 3 automatic power 2 3 Conversion of read write data 2 6 Cooling air exhaust ducts 2 8 air intake duct 2 7 precautions 4 2 COPY ABORTED 3 7 Corrective action see General failures Curie temperature D 2 D Damage precautions 4 1 Data cannot read 3 3 cannot write 3 3 conversion of 2 6 erasing of 1 2 field format D 5 maximum transmission speed 2 4 new 4 2 old 4 2 principle
35. ew of the RWZ01 The names and functions of the parts on the front of the RWZOI are see Figure 2 3 Figure 2 3 Front of the RWZ01 Disk Drive 2 3 4 sje CS 8677 1 POWER supply indicator This indicator is lit when power is turned on 2 BUSY indicator This indicator is lit when data is being read or written to the disk 3 Disk insertion entrance This is where you insert a disk 4 Air intake duct for cooling This duct takes in air to cool the interior 5 Emergency eject hole This is used for emergency ejection of a disk see Figure 3 1 6 EJ ECT button This button electrically ejects a disk System Description of the RWZOL 2 7 2 1 4 Rear View of the RWZO1 The names and functions of the components on the rear of the RWZOI are described in the following see Figure 2 4 Figure 2 4 Rear of the RWZO1 Disk Drive CS 8678 1 Interface connector This is the connecting point of the RWZO1 to the SCSI bus Use a SCSI cable sold separately to connect to the host computer or other SCSI unit see Section 2 2 Connecting the RWZON 2 Switchpack Switches This set of switches are set to control the operation of the RWZO1 and to define the SCSI ID number see Section 2 5 Setting Switchpack Switches 3 Air exhaust ducts for heat release These are the cooling air exhaust ducts 4 F GND pin This F GND pin is not used by the RWZ01 because a 3 pin with ground power cable is us
36. g to the manual vi F r Bundesrepublik Deutschland und Berlin West For Federal Republic of Germany and West Berlin Pour la R publique f derale d Allemagn t Berlin Ouest Bescheinigung des Herstellers Importeurs Hiermit wird bescheinigt da8 die Einrichtung in bereinstimmung mit den Bestimmungen der DBP Verf gung 1046 84 Amtsblatt Nr 163 1984 und Grenzwertklasse B der VDE0871 funkenst rt ist Der Deutschen Bundespost DBP wurde das Inverkehrbringen dieses Ger tes angezeigt und die Berechtigung zur berpr fung der Serie auf Einhaltung der Bestimmungen einger umt Betreiberhinweis Wir sind verpflichtet Sie auf folgende Fakten hinzuweisen DBP Verf gung 1046 84 S2 Abschnitt 5 Das Ger t wurde funktechnisch sorgf ltig entst rt und gepr ft Beim Zusammenschalten mit anderen EDV Ger ten k nnen im ung nstigsten Fall Funkst rungen entstehen die dann im Einzelnen zus tzliche Funkenst rungs Ma nahmen durch den Benutzer erfordern Externe Datenkabel Sollte ein Austausch der von Digital spezifizierten Datenkabel n tig werden mu der Betreiber f r ein inwandfreie Funkentst rung sicherstellen da Austauschkabel im Aufbau und Abschirmqualit t dem Digital Originalkabel entsprechen DANGER INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO BEAM DANGER RADIATIONS INVISIBLES DU LASER EN CAS D OUVERTURI EVITER TOUTE EXPOSITION DIRECTE AU
37. ion on the special file see Special File 4 in the ULTRIX Reference Pages 2 8 Changing Partition Sizes ULTRIX The chpt command allows you to change the partition table of the RWZO1 on the ULTRIX operation system For information on the chpt command refer to chpt 8 in the ULTRIX Guide to Disk Maintenance System Description of the RWZOL 2 17 Chapter 3 How to Handle Failures This chapter describes actions to take if a failure occurs in the RWZO1 3 1 General Failure Table 3 1 General Failures and Corrective Action Problem Action No power even with the power supply switch set to ON Make sure that the power supply cable is inserted in the socket cor rectly Make sure that the power sup ply cable is not faulty If there is any fault replace the power supply cable How toHandleFailures 3 1 Table 3 1 Cont General Failures and Corrective Action Problem Action The power supply indicator does not light A disk cannot be inserted A disk cannot be removed The EJ ECT button does not function properly The RWZOI is not recognized by the SHOW DEVICE on console mode or test c command 3 2 HowtoHandleFailures Make sure that the power supply cable is inserted in the socket cor rectly Make sure that the power sup ply cable is not faulty If there is any fault replace the power supply cable Make sure that the disk is an RWX1K 01 or equivalent Make sure
38. isk inside the drive unit when not being used 4 3 Cleaning an Optical Head When the optical head is dirty a data read or write error may occur To remove dust from the lens use a lens deaning cartridge P N RWX1H AA sold separately Figure 4 1 shows a lens cleaning cartridge Refer to the Lens Cleaning Cartridge User s Guide provided with the lens cleaning cartridge kit for information on the use of a lens deaning cartridge Note To maintain performance of the RWZOI clean the optical head once a month Maintenance 4 3 Figure 4 1 Lens Cleaning Cartridge CLEANING CARTRIDGE SPRAY SECTION le SHUTTER gt gt 9 c ec FACE THE LABEL SIDE DOWN CS 8738 4 4 Maintenance Appendix A Specifications This appendix contains the specifications for the RWZ01 Disk Drive and the RWXIK disk A 1 Specifications of the RWZ01 Model name Magneto Optical Disk Subsystem RWZO1 AA External measurement excluding the highest projected part e Width 211 mm 8 3 inch e Depth 310 mm 11 81 inch e Height 126 mm 4 96 inch e Weight 6 8 kg 14 96 Ibs Environmental conditions Installation direction Horizontal within 5 centerline During operation Temperature 10 to 40 C Temperature graduation 10 C hour or less Relative humidity 10 to 90 no condensation Vibration 0 2G or less Shock 25G or less 3 ms half sine wave Specifications A 1 e Non operation e Temperature 30 to
39. luding alternate areas A disk format which complies with the Continuous Composite Servo CS format ISO IEC DIS 10089 of International Standard Organi zation ISO which is the world standard A Small Computer System Interface SCSI which complies with ANSI X3 131 1986 CCS Rev 4B Up to eight units including a host computer can be connected to one SCSI bus A high speed transmission of data that uses a high speed spindle motor 2400 rpm Overview 1 1 e A fast seek time of 95 ms that uses a thin light weight optical pick up e An error correction that uses Long Distance Code 1 2 System Configuration The RWZOI is Small Computer System Interface SCSI compatible and therefore can be connected to the host computer SCSI bus In addition the RWZOI can be connected to any SCSI unit in a system Figure 1 1 shows a typical system configuration A SCSI terminator terminal resistance is built into the RWZOI Disk Drive Figure 1 1 Typical System Configuration HOST COMPUTER SCSI PORT CS 8733 1 3 Writing and Reading Data in the RWZ01 Writing and reading data in the RWZOI is based on controlling the magnetic bits on the disk with a laser beam Writing data is a two step process where the area to be written is first cleared data is erased and then the data is written Reading data is based on sensing the magnetic polarity of the data bit by sensing the phase of the reflected laser beam For details on the era
40. ndix D Theory of Laser Optical Disks D 1 Principle of Writing Data to and Reading Data from a Disk D 1 D 11 WritePrindple D 2 D 12 ReadPrinciple D 3 D 2 Disk Format zc xs me eek cken uk len D 3 D 3 Format Specifications D 4 D 31 Modulation Code D 4 D 3 2 Sedor Format u ae ee D 4 DA Data Field Format D 5 D 5 Defect Management Strategies D 5 D 5 1 Sector Slipping Algorithm D 5 D 5 2 Linear Replacement Algorithm D 6 Index Figures 1 The RWZO1 Disk Drive xvi 1 1 Typical System Configuration 1 2 2 1 RWZ01 Disk Drive Modules 2 2 2 2 Structure of the RWZ01 SCSI Controller 2 5 2 3 Front of the RWZO1 Disk Drive 2 7 2 4 Rear of the RWZO1 Disk Drive 2 8 2 5 Connection of the RWZO1 2 10 2 6 Typical VAXstation 3100 System Configuration 2 11 2 7 SCSI ID Number Examples 2 12 2 8 Setting the RWZOI Switchpack Switches 2 13 2 9 When a Terminator is Used 2 14 2 10 When a Terminator is not Used 2 14 2 11 Setting the SCSI ID Number 2 15 xi 3 1 Ejec
41. ntrol signal to the laser drive module for the laser power modes and provides a switching signal to a RF module for the equalizer 2 1 2 SCSI Controller This section describes the interface between the host computer SCSI and the disk drive M ESDI see Figure 2 2 The maximum data transmission speed is 1 2 Mbytes second in the SCSI section and 7 40 M bits second in the M ESDI section 2 4 System Description of the RWZOL Figure 2 2 Structure of the RWZ01 SCSI Controller B MO Disk Drive Control k Logic 1 Buffer Memory Manager Encoder Syndrome Generator Working RAM 1 Microprocessor Module This module MPU includes a V40 MPU a 64K byte programmable ROM PROM and a 32K byte working RAM on theMPU bus This module controls and manages the other modules in the SCSI controller and in the disk drive section Another major function is to correct errors in the data that was read The functions of this module are p PROCESSOR CS 8736 e Managing other modules e Controlling the SCSI Controlling the disk drive via the M ESDI e Managing bad blocks e Recovering and managing errors e Diagnosing The RAM has four sections System Description of the RWZOL 2 5 A program working area A bad block management information area A control information area e An error correction code ECC syndrome buffer area 2 Buffer Memory Manager Module This module performs the internal data
42. of reading and writing D 1 protection of 4 3 read principle D 2 reading of 1 2 transmission of 1 1 write principle D 2 writing of 1 2 DATA PROTECT 3 7 DATA PROTECT switch 3 3 4 3 DECstation operation for 3 13 Defect management strategies D 5 linear replacement algorithm D 5 sector slipping algorithm D 5 Defective sectors D 5 Device not recognized 3 2 Diagnosis test 3 13 Indec2 Dirty lens 4 3 Disk cannot insert 3 2 cannot mount 3 3 cannot read data 3 3 cannot remove 3 2 cannot write data 3 3 capadty of 1 1 data field format D 5 defect management D 5 electrical ejection 2 7 emergency eject hole 2 7 erasing of D 2 format of 1 1 D 3 insertion entrance 2 7 read principle D 3 reading data 1 2 rotation A 2 sector format D 4 seek time A 2 side A 4 3 side B 4 3 specifications A 3 storage 4 3 storage capacity A 2 using DISMOUNT 4 2 volumes 4 3 write principle D 2 writing data 1 2 Disk drive section of 2 1 DISMOUNT 4 2 Drive interface control module 2 6 E ECC Syndrome generator module 2 6 EJ ECT button 2 7 failure of 3 2 Electrical specification A 2 EMC regulations C 1 Emergency eject hole 3 2 Emergency eject tool 3 2 Environmental conditions disk A 4 drive A 1 Erasing the disk D 2 Error codes 3 5 COPY ABORTED 3 7 DATA PROTECT 3 7 HARDWARE ERROR 3 7 ILLEGAL REQUEST 3 7 MEDIUM ERROR 3 6 NO SENSE 3 6 NOT READY 3 6 RECOVERED ERRO
43. ould not be performed for HARDWARE ERROR the specified track even if retry was performed 18H Recovered Read Data An error of 7 to 8 bytes was with ECC Procedure RECOVERED ERROR contained in the data that was read however error correction was completed How to Handle Failure 3 9 Table 3 3 Cont Additional Sense Codes Additional Sense Additional Sense Code Code Status Cause 20H Invalid Command Operation The specified command control Code ILLEGAL REQUEST code was not executed or an incorrect command was requested 21H Illegal Logical Block Address The specified logical block ILLEGAL REQUEST address is in an illegal area 23H Illegal Function for Medium The format parameter used is Type ILLEGAL REQUEST not suitable for the disk 24H Illegal Field in CDB The CDB received contains an ILLEGAL REQUEST error This code is issued in the following cases The reserved area in the CDB is not O The parameter combination is incorrect for instance both the Eject bit and Start bit are set in the START STOP UNIT command The parameter used is not used in the status for instance the command for which the relative address bit was set to 1 was issued after the command for which the link bit was set to a value other than 1 25H Invalid LUN ILLEGAL One of the logical unit numbers REQUEST 1 to 7 is specified or the specified logical unit number 0 is not identified by the disk drive controller 26H Invali
44. r of bad block sectors Available MEDIUM ERROR in PDL and secondary defect list SDL exceeded 1024 or exceeded the value calculated by the number of groups and number of spare blocks per group 38H Recovered with Automatic Automatic Write Reallocation Reallocation RECOVERED was terminated normally ERROR 39H Automatic Reallocation Automatic Write Reallocation MEDIUM ERROR failed after three retries 3AH Defect List Update Failure Although a data sector could be MEDIUM ERROR allocated a defect table could not be updated 3DH Defect List Not Available The specified defect list could MEDIUM ERROR or not be used RECOVERED ERROR 42H Power On Diagnostic Failure A failure was detected by Power HARDWARE ERROR On diagnosis 43H Message Reject Error The MESSAGE REJ ECT HARDWARE ERROR message was issued and the message from the RWZ01 was rejected by the initiator As a result the command could not be executed 44H Internal Controller Error The controller detected a HARDWARE ERROR hardware or firmware error within the controller 47H SCSI Interface Parity Error The command was not executed HARDWARE ERROR 3 12 How to Handle Failures due to a parity error in the SCSI bus Table 3 3 Cont Additional Sense Codes Additional Sense Additional Sense Code Code Status Cause 48H Initiator Detected Error The command was not executed HARDWARE ERROR because message INITIATOR DETECT ED ERROR was issued from theinitia
45. se write and read operations see Appendix A 1 2 Overview Chapter 2 System Description of the RWZ01 This chapter describes e Theinternal structure of the RWZO1 The name and function of each part of the RWZOI that is accessible to the user e The system configuration of the RWZO1 2 1 Internal Structure of the RWZO1 The RWZOI consists of a disk drive section and a SCSI controller section The disk drive section controls the writing of data to and the reading of data from the disk The SCSI controller section controls data flow between the host computer and the disk drive section 2 1 1 Disk Drive Section The disk drive section of the RWZOI includes mechanical electrical and optical modules These modules are shown in block diagram form in Figure 2 1 and are described in the following System Description of theRWZO1 2 1 RWZO1 Disk Drive Modules Figure 2 1 gEL8 SI viva IGS3 N ang WV 18p098Q 118P09u3 221784 ayze NOH 18P028Q SSe1Jppv 0 820d71 ndo 10SS890id OIW 1811021109 sjpuds eoepelu SPIS ER 10X0 SNJEIS 51904 puewwod Guppesl IQS3 W SOAU3S 10Su8S NDORA Joyoyy ajpuids HOw Jeaur uoneiedas ejeQ Ae ug Q1 wsiueyoayy 18peo1 S10SUaS 18pe07 ysta 13 01U09 jaubey seig 2 2 System Description of the RWZOL Optical Head Module This module includes a laser diode a laser diode driver and a radio frequency RF servo amplifier
46. sector information is stored on the disk in the Primary Defect List PDL and Secondary Defect List SDL When a disk is loaded the RWZOI reads the Disk Definition Structure DDS PDL and SDL and keeps the information in the internal RAM area When you issue the disk access commands SEEK ERASE WRITE READ the RWZOI translates the logical block address to the intermediate address applying the Linear Replacement Algorithm and translates the intermediate address to the physical address applying the Sector Slipping Algorithm Actually to reduce the processing time both algorithms are applied at the same time in the RWZO1 D 5 1 Sector Slipping Algorithm Through this algorithm defective sectors known before the FORMAT UNIT command or detected during the certification process of the FOR MAT UNIT command are listed as defective These sections are not used for reading or writing data by skipping referenced sectors As the defec tive sectors are encountered the address of the defective sector is logged into the PDL in the form of physical address and the next good sector becomes its replacement for the defective sector Each timethis happens the data area slips one sector forward An example of this algorithm is illustrated in Fig D 4 Theory of Laser Optical Disks D 5 Figure D 4 Sector Slipping Algorithm INTERMEDIATE PHYSICAL ADDRESS ADDRESS 0 TRACK 4 SECTORO 1 TRACK4 SECTOR x DEFECTIVE SECTOR TRACK 4 SECTOR
47. that the disk is inserted in the correct direction Make sure that the label is attached to the correct position Remove the disk by inserting an emergency eject tool into the emer gency eject hole see Figure 3 1 Make sure that switch 2 is set to ENABLE See Section 2 5 Setting Switchpack Switches Check whether the SCSI cable iS connected properly see Figure 2 5 Make sure that the SCSI ID number is not duplicated with the ID number of some other SCSI device see Section 2 5 Setting Switchpack Switches Table 3 1 Cont General Failures and Corrective Action Problem Action The RWZOI is not recognized by the SHOW DEVICE DCL or rzdisk q ULTRI X command A disk cannot be mounted Data cannot be written to a disk The spindle motor does not rotate when a disk is inserted An abnormal noise is emitted while a disk is rotating Make sure that the SCSI cable is connected properly see Figure 2 5 Make sure that the SCSI ID number is not duplicated with thelD number of some other SCSI device see Section 2 5 Setting Switchpack Switches Make sure that a disk is inserted Make sure that a disk side A or B is specified correctly When a disk that is not initialized is mounted the BUSY indicator stays on and a command is not terminated In this case remove the disk by pressing the EJ ECT button and then interrupt the MOUNT process Make sure that the data protection switch
48. the RWZOI to a host computer using a SCSI bus In addition a system can be constructed by connecting other SCSI units to the host or the RWZO1 Figure 2 6 shows a typical system configuration with a VAXstation 3100 as the host computer A SCSI terminator terminal resistance is built into the RWZ01 When the RWZOL is the last device terminator unit on the SCSI bus set the built in terminator to ENABLE See Section 2 5 Setting Switchpack Switches Figure 2 6 Typical VAXstation 3100 System Configuration BC19J 1E BC56H 03 SCSI PORT B VAXstation 3100 SCSI PORT A CS 8676 2 4 Checking a SCSI ID Number Check to ensurethat the SCSI ID number set by the switchpack switches is recognized by the host computer The following sections have examples for VMS and ULTRI X operating systems In these examples see Figure 2 7 the SCSI ID number is set to 1 of the SCSI bus external bus See the host computer manual for a description of the SCSI bus System Description of the RWZO1 2 11 Figure 2 7 SCSI ID Number Examples ID 1 ID2 BC19J 1E BC56H 03 SCSI PORT B VAXstation 3100 SCSI PORT A CS 8748 2 4 1 Operation for VMS For VMS systems use the console command mode SHOW DEVICES command gt gt gt SHOW DEVICES The system will display a list of the devices connected to the host and their ID numbers If the RWZOI is not displayed with the SCSI ID number that w
49. ting a Disk in an Emergency 3 4 3 2 Disk Data Protection Switch Tab 3 5 4 1 Lens Cleaning Cartridge 4 4 D 1 Principle of Writing Data toa Disk D 2 D 2 Principle of Reading Data from a Disk D 3 D 3 Disk Format sm IR ERR EGG EE D 4 D 4 Sector Slipping Algorithm D 6 D 5 Structure of Bands Linear Replacement Algorithm D 7 Tables 1 Notes Cautions Warnings Documentation XV 2 Cautions Warnings Safety XV 2 1 SCSI ID Number Switch Settings 2 16 3 1 General Failures and Corrective Action 3 1 3 2 Sense KEYS ras kam ed eee ed er 3 6 3 3 Additional Sense Codes 3 8 B 1 RWZO1Parts List B 1 B 2 SCSl Cable List uc dreier ara B 2 B 3 Power Cords List B 2 xii Preface This manual describes the RWZ01 M agneto Optical Disk Drive hereafter call the RWZO1 Disk Drive or the RWZ01 handling possible RWZO1 failures and maintenance of the RWZO1 Document Structure Chapter 1 Overview Outlines the functions and principles of the RWZO1 Chapter 2 System Description of the RWZOI Describes the internal structure name and function of each part and system configuration of the RWZO1 Chapter 3 How to Handle Failures Describes how to detect the
50. tor 49H Inappropriate lllegal Message A command was not executed HARDWARE ERROR due to an inappropriate message from the initiator 80H Limited Laser Life Laser diode excess current was HARDWARE ERROR detected or laser output became less than the lower limit 81H Focus Coil Over Current Excess current was detected Failure HARDWARE from the focus coil of the optical ERROR pickup section This coil is protected by a relay 82H Tracking Coil Over Current Excess current was detected Failure HARDWARE from the tracking coil of the ERROR optical pickup section This coil is protected by a relay 83H Temperature Alarm The temperature within the HARDWARE ERROR drive exceeded its limit of 55 C 3 3 VAXstation ROM Diagnosis Test Refer to the VAXstation Maintenance Guide for the ROM diagnosis test of the VAXstation However the T75 ERASE test of Section 3 18 SCSI Mass Storage Disk Data Eraser T75 cannot be executed by the RWZO1 3 4 Operation for DECstation Refer to the DECstation Operator s Guide for the ROM diagnosis test of the DECstation How to HandleFailures 3 13 Chapter 4 Maintenance This chapter describes cautions on the use of the RWZ01 and the method of cleaning an optical head in the RWZO1 4 1 Cautions on Use Observe the following cautions to use the RWZ01 safely AC input power Use 100 to 120 Vac 50 60 Hz supply voltage in USA J apan and Canada Use 220 to 240 Vac 50 60 Hz supply

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