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Fujitsu MAM3184MC/MP Product/Maintenance Manual

Fujitsu computer drive user manual
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MAM3367MC/MP SERIES
MAM3184MC/MP SERIES
DISK DRIVES
PRODUCT/MAINTENANCE MANUAL
C141-E134-01EN

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Summary of Contents for Fujitsu MAM3184MC/MP

  • Page 1 MAM3367MC/MP SERIES MAM3184MC/MP SERIES DISK DRIVES PRODUCT/MAINTENANCE MANUAL C141-E134-01EN...
  • Page 2 In addition, FUJITSU assumes no liability with respect to the application or use of any porduct or system in accordance with the descriptions or instructions contained herein; including any liability for incidental or consequential damages arising therefrom.
  • Page 3 REVISION RECORD Edition Date published Revised contents July., 2001 Specification No.: C141-E134-01EN C141-E134-01EN...
  • Page 4 Related Standards Specifications and functions of products covered by this manual comply with the following standards. Standard (Text) No. ANSI X3.131-1994 Small Computer System Interface - 2(SCSI-2) T10/1236-D Rev 19 SCSI Primary Commands-2 (SPC-2) ANSI NCITS. 306-1998 SCSI-3 Block Commands (SBC) ANSI X3.270-1996 SCSI-3 Architecture Model (SAM) ANSI NCITS.
  • Page 5 This manual describes the MAM3367MC/MP, MAM3184MC/MP (hereafter, MAM series), 3.5 type fixed disk drives with an embedded SCSI controller. This manual details the specifications and functions of the above disk drive, and gives the requirements and procedures for installing it into a host computer system.
  • Page 6 APPENDIX A to D The appendixes give supplementary information, including the locations of mounting setting terminals and connectors, a list of setting items, the signal assignments of interface connectors, lists of model names and product numbers, and SCSI interface functions. The model numbers have a suffix that describes the electrical requirements of the SCSI interface between host system and disk drive, the data formatted at the factory and device type.
  • Page 7 Failure of the MAM series intelligent disk drive is defined as a failure requiring adjustments, repairs, or replacement. Fujitsu is not responsible for drive failures caused by misuse by the user, poor environmental conditions, power trouble, host problems, cable failures, or any failure not caused by the drive itself.

  • Page 8: Important Alert Items

    Important Alert Messages The important alert messages in this manual are as follows: A hazardous situation could result in minor or moderate personal injury if the user does not perform the procedure correctly. This alert signal also indicates that damages to the product or other property may occur if the user does not perform the procedure correctly.
  • Page 9 Never open the disk enclosure in the field. Opening the disk enclosure in the field may cause an irreparable fault. Data loss Save data stored on the disk drive before requesting repair. Fujitsu does not assume responsibility if data is destroyed during servicing or repair.
  • Page 10 MANUAL ORGANIZATION PRODUCT/ 1. General Description MAINTENANCE 2. Specifications MANUAL 3. Data Format 4. Installation Requirements (This manual) 5. Installation 6. Diagnostics and Maintenance 7. Error Analysis 8. Principle of Operation SCSI Physical 1. SCSI Bus Interface 2. SCSI Message Specifications 3.

  • Page 11: Table Of Contents

    CHAPTER 1 GENERAL DESCRIPTION ...1-1 Standard Features ...1-2 Hardware Structure...1-5 System Configuration ...1-8 CHAPTER 2 SPECIFICATIONS ...2-1 Hardware Specifications ...2-1 2.1.1 Model name and part number ...2-1 2.1.2 Function specifications ...2-2 2.1.3 Environmental specifications...2-4 2.1.4 Error rate...2-5 2.1.5 Reliability ...2-5 SCSI Function Specifications ...2-7 CHAPTER 3 DATA FORMAT...3-1...
  • Page 12 4.3.2 SCA2 type SCSI model (MC model)... 4-19 4.3.3 Cable connector requirements...4-20 4.3.4 External operator panel (MP model) ...4-22 CHAPTER 5 INSTALLATION ...5-1 Notes on Handling Drives...5-1 Connections ...5-3 Setting Terminals...5-5 5.3.1 SCSI ID setting (MP model only)...5-6 5.3.2 Each mode setting (MP model only)...5-7 5.3.3 Mode settings...5-9 Mounting Drives...5-10...
  • Page 13 6.3.3 Diagnostic test ...6-12 Troubleshooting Procedures ...6-13 6.4.1 Outline of troubleshooting procedures...6-13 6.4.2 Troubleshooting with disk drive replacement in the field...6-13 6.4.3 Troubleshooting at the repair site ...6-15 6.4.4 Troubleshooting with parts replacement in the factory...6-16 6.4.5 Finding possibly faulty parts...6-16 CHAPTER 7 ERROR ANALYSIS ...7-1 Error Analysis Information Collection...7-1...
  • Page 14 8.7.3 Servo frame format ...8-12 8.7.4 Spindle motor control ...8-12 8.7.5 Voice coil motor control...8-13 APPENDIX A LOCATIONS OF CONNECTORS AND SETTING TERMINALS... A-1 Locations of Connector (MC model) ... A-2 Locations of Connectors and Setting Terminals (MP model) ... A-3 APPENDIX B SETTING TERMINALS ...
  • Page 15 Figure MC model outer view...1-5 Figure 1.2 MP model outer view ...1-6 Figure 1.3 Disk/head configuration ...1-7 Figure 1.4 System configuration...1-8 Figure 3.1 Cylinder configuration ...3-2 Figure 3.2 Spare area in cell ...3-5 Figure 3.3 Alternate cylinder...3-5 Figure 3.4 Track format...3-6 Figure 3.5 Track skew/cylinder skew ...3-7 Figure 3.6...
  • Page 16 Figure 4.21 Connectors location of MC model ...4-19 Figure 4.22 SCA2 type SCSI connector ...4-20 Figure 4.23 External operator panel circuit example...4-22 Figure 5.1 SCSI bus connections (1 of 2)...5-4 Figure 5.1 SCSI bus connections (2 of 2)...5-4 Figure 5.2 IDD setting terminals position (MP model only) ...5-5 Figure 5.3 Setting terminator (CN2 on MP model only) ...5-6...
  • Page 17 Table 2.1 Function specifications...2-2 Table 2.2 Environmental/power requirements ...2-4 Table 2.3 SCSI function specifications ...2-7 Table 3.1 Zone layout and track capacity...3-3 Table 3.4 Format capacity...3-10 Table 4.1 Surface temperature check point ...4-6 Table 4.2 Recommended components for connection...4-21 Table 5.1 SCSI ID setting (CN2 on MP model only)...5-7 Table 5.2 Setting SCSI terminal power supply (MP model only) ...5-7...
  • Page 18 This page is intentionally left blank.

  • Page 19: Chapter 1 General Description

    CHAPTER 1 GENERAL DESCRIPTION Standard Features Hardware Structure System Configuration This chapter describes the feature and configuration of the intelligent disk drives (IDD). IDDs are high performance large capacity 3.5 type fixed disk drives with an embedded SCSI controller. The interface between the IDD and host system is based on SCSI (Small Computer System Interface) standard [ANSI X3.131-1994: Small Computer System Interface - 2 (SCSI-2)].

  • Page 20: Standard Features

    Standard Features Compactness Since the SCSI controller circuit is embedded in the standard 3.5 type fixed disk drive form factor, the IDD is extremely compact. The IDD can be connected directly to the SCSI bus of the host system. SCSI standard The IDD provides not only SCSI basic functions but also the following features: Arbitration Disconnection/Reconnection...
  • Page 21 Note: The maximum data transfer rate in asynchronous mode may be limited by the response time of initiator and the length of SCSI bus length. The maximum data transfer rate in synchronous mode may be limited by the cable length, transmission characteristics of the SCSI bus and the connected SCSI device number.
  • Page 22 (10) Error recovery The IDD can try to recover from errors in SCSI bus or the disk drive using its powerful retry processing. If a recoverable data check occurs, error-free data can be transferred to the initiator after being corrected in the data buffer. The initiator software is released from the complicated error recover processing by these error recovery functions of the IDD.

  • Page 23: Hardware Structure

    (18) Low power consumption By using highly integrated LSI components, the power consumption of the IDD is very low, and this enables the unit to be used in wide range of environmental conditions. (19) Low noise and low vibration The noise level is low; approx. 3.9 bels. This makes it ideal for office use. (20) Microcode downloading The IDD implements the microcode download feature.

  • Page 24: Figure 1.2 Mp Model Outer View

    Figure 1.2 Disks The disks have an outer diameter of 70 mm (2.8 inch) outer diameter and 25 mm (0.98 inch) inner diameter for MAM series. The disks are good for at least 20,000 contact starts and stops. Each model contains following number of disks. MAM3367: 4 MAM3184: 2 1 - 6...

  • Page 25: Figure 1.3 Disk/Head Configuration

    Heads The MR (Magnet - Resistive) of the CSS (contact start/stop) type heads are in contact with the disks when the disks are not rotating, and automatically float when the rotation is started. Figure 1.3 shows the configuration of disks and heads MAM3367 Figure 1.3 Spindle motor...

  • Page 26: System Configuration

    Maximum Likelihood) modulation/demodulation circuit in order to prevent errors being triggered by external noise and to improve data reliability. Controller circuit The controller circuit uses LSIs to increase the reliability and uses a high speed microprocessing unit (MPU) to increase the performance of the SCSI controller. System Configuration Figure 1.4 shows the system configuration.
  • Page 27 SCSI bus configuration Up to eight SCSI devices operating as an initiator or a target can be connected to the SCSI bus for the 8-bit SCSI and up to 16 SCSI devices operating as an initiator or a target can be connected to the SCSI bus for the 16-bit SCSI in any combination.
  • Page 28 This page is intentionally left blank.

  • Page 29: Chapter 2 Specifications

    CHAPTER 2 SPECIFICATIONS Hardware Specifications SCSI Function Specifications This chapter describes specifications of the IDD and the functional specifications of the SCSI. Hardware Specifications 2.1.1 Model name and part number Each model has a different recording capacities and interface connector type when shipped. (See Appendix D for the model name (type) and product number.) The data format can be changed by reinitializing with the user's system.

  • Page 30: Function Specifications

    2.1.2 Function specifications Table 2.1 shows the function specifications of the IDD. Table 2.1 Item Formatted capacity/device (*1) Number of disks Number of heads Number of cylinders (*2) Formatted capacity/track (B) Number of rotations min (rpm) Average latency time Track to Track Seek time (*3) Average (Read/Write)
  • Page 31 The formatted capacity can be changed by changing the logical block length and using spare sector (*1) space. See Chapter 3 for the further information. The formatted capacity listed in the table is an estimate for 512 bytes per sector. The number of user cylinders indicates the max., and includes the alternate cylinder.

  • Page 32: Environmental Specifications

    2.1.3 Environmental specifications Table 2.2 lists environmental and power requirements. Table 2.2 Item Operating Non-operating Transport (within a Temperature week) (*1) DE surface temperature at operating Gradient Operating Non operating Relative Transport (within a humidity week) Maximum wet bulb temperature Operating (*3) Vibration (*2) Non-operating (*4)

  • Page 33: Error Rate

    At power-off state after installation (*4) Vibration displacement should be less than 2.5 mm. Input voltages are specified at the connector. (*5) The terminator power pin (SCSI connector) which supplies power to other terminators is not used (*6) (See Section 4.3). High frequency noise is less than 100 mVp-p.
  • Page 34 Failure of the equipment means failure that requires repair, adjustments, or replacement. Mishandling by the operator, failures due to bad environmental conditions, power trouble, host system trouble, cable failures, or other failures not caused by the equipment are not considered. Mean Time To Repair (MTTR) MTTR is the average time taken by a well-trained service mechanic to diagnose and repair a drive malfunction.

  • Page 35: Scsi Function Specifications

    SCSI Function Specifications Table 2.3 shows the SCSI functions provided with the IDD. Table 2.3 Item Single-ended type HVD type (High Voltage Differential) LVD type (Low Voltage Differential) Electrical 160/m LVD type (Low Voltage Differential) requirements (*1) Single-ended type Differential type TERMPWR signal send function 68 pin P cable connector Connector...
  • Page 36 This page is intentionally left blank.

  • Page 37: Chapter 3 Data Format

    CHAPTER 3 DATA FORMAT Data Space Logical Data Block Addressing Defect Management This chapter explains data space definition, logical data block addressing, and defect management on the IDD. Data Space The IDD manages the entire data storage area divided into the following three data spaces. User space: Storage area for user data Internal test space: Reserved area for diagnostic purposes System space: Area for exclusive use of IDD itself...

  • Page 38: Figure 3.1 Cylinder Configuration

    Cylinder –85 Cylinder –78 Cylinder –73 Cylinder –4 Cylinder 0 Cylinder 1 • Primary Cylinder (n–1) • n–2 n–1 Spare sector for each cylinder n = MAM3367 series: 18,754 MAM3184 series: 18,786 Note Spare sectors on the last track in each cylinder are not necessarily placed at the end of the track because of a track skew or a cylinder skew.

  • Page 39: Table 3.1 Zone Layout And Track Capacity

    Table 3.1 Zone MAM3367 series 1,241 - 2,481 2,482 - 3,722 3,723 - 4,963 4,964 - 6,004 6,005 - 7,025 7,026 - 7,746 7,747 - 8,987 8,988 - 9,848 9,849 - 10,909 10,910 - 12,070 12,071 - 13,391 13,392 - 14,612 14,613 - 15,653 15,654 - 16,302 16,303 - 17,431...

  • Page 40: Alternate Spare Area

    A number staring with 0 is assigned to each cylinder required in the user space in ascending order. If the number of cylinders do not reach the maximum, the rest of the cylinders will not be used. Always one cylinder that is located at the end of each zone in the user space can be established as an alternate cylinder.

  • Page 41: Track Format

    Cell Note: This drive manages alternate spare areas for each cell, which is a set of cylinders. The default value for the number of cylinders is four. An alternate cylinder is used when spare sectors in a cell are used up or 0 is specified as the number of spare sectors in a cell.

  • Page 42: Figure 3.4 Track Format

    Track skew and cylinder skew To avoid waiting for one turn involved in head and cylinder switching, the first logical data block in each track is shifted by the number of sectors (track skew and cylinder skew) corresponding to the switching time. Figure 3.5 shows how the data block is allocated in each track. At the head switching location in a cylinder, the first logical data block in track t + 1 is allocated at the sector position which locates the track skew behind the sector position of the last logical data block sector in track t.

  • Page 43: Sector Format

    Figure 3.5 Track skew/cylinder skew The number of physical sectors (track skew factor and cylinder skew factor) corresponding to the skew time varies depending on the logical data block length because the track skew and the cylinder skew are managed for individual sectors. The IDD automatically determines appropriate values for the track skew factor and the cylinder skew factor according to the specified logical data block length.

  • Page 44: Figure 3.6 Sector Format

    DATA1 SM2 DATA2 Sync DATA1 SM2 DATA3 PAD G2 Sync Each sector on the track consists of the following fields: Gaps (G1, G2, G3) The gap length at the time of formatting (initializing) is listed in Figure 3.6. No pattern is written on the gap field.

  • Page 45: Format Capacity

    BCRC It is a 4-byte error detection code. Errors in the ID field. Single burst errors with lengths of up to 32 bits for each logical block can be detected. This is the 60-byte code that allows detection and correction of errors in the data field, which is capable of correcting the single burst error up to 240 bits max.

  • Page 46: Logical Data Block Addressing

    Model Data heads Data block length MAM3367 series MAM3184 series Note: Total number of spare sectors is calculated by adding the number of spare sectors in each primary cylinder and the number of sectors in the alternate cylinders. Logical Data Block Addressing Independently of the physical structure of the disk drive, the IDD adopts the logical data block addressing as a data access method on the disk medium.

  • Page 47: Defect Management

    When the logical data block is allocated, some sectors (track skew and cylinder skew) shown in Figure 3.5 are provided to avoid waiting for one turn involving head and cylinder switching at the location where the track or the cylinder is physically switched. See Subsection 3.3.2 for defective/alternate block treatment and the logical data block allocation method in case of defective sectors exist on the disk.
  • Page 48 The INIT can specify the size and area for spare sectors by the MODE SELECT command at the time of the initialization of the disk. Both of the following are applicable to the alternate block allocation. Sector slip treatment: Defective sectors are skipped and the logical data block corresponding to those sectors is allocated to the next physical sectors.

  • Page 49: Figure 3.7 Alternate Block Allocation By Format Unit Command

    : n represents a logical data block number : Defective sector : Unused spare sector Figure 3.7 Alternate block allocation by FORMAT UNIT command If the data block verifying operation (certification) is not permitted (DCRT flag = 0) in the FORMAT UNIT command, the IDD checks all initialized logical data blocks by reading them out after the above alternate block allocation is made to initialize (format) the disk.

  • Page 50: Figure 3.8 Alternate Block Allocation By Reassign Blocks Command

    Alternate block allocation by REASSIGN BLOCKS command When the REASSIGN BLOCKS command is specified, the alternate block is allocated to the defective logical data block specified by the initiator by means of alternate sector treatment. If there are unused spare sectors in the same cylinder as the specified defective logical data block, the alternate block is allocated to these unused spare sectors.
  • Page 51 Automatic alternate block allocation at write operation If AWRE flag in the MODE SELECT parameter permits the automatic alternate block allocation, the IDD executes the automatic alternate processing during WRITE command processing as described below: 1) Commands to be applied WRITE WRITE EXTEND WRITE at executing WRITE AND VERIFY...
  • Page 52 Automatic alternate block allocation is made only once during the execution of one command. If second defective block is detected, the alternate block assignment processing for the first defective block is executed but the alternate block assignment processing for the second one is not executed and the command being executed terminates.

  • Page 53: Chapter 4 Installation Requirements

    CHAPTER 4 INSTALLATION REQUIREMENTS Mounting Requirements Power Supply Requirements Connection Requirements This chapter describes the environmental, mounting, power supply, and connection requirements. Mounting Requirements 4.1.1 External dimensions Figures 4.1 to 4.2 show the external dimensions of the IDD and the positions of the holes for the IDD mounting screws.

  • Page 54: Figure 4.1 External Dimensions (Mc Model)

    The value marked with (*) indicates the dimension between mounting holes on the bottom face. Figure 4.1 External dimensions (MC model) 4 - 2 C141-E134-01EN...

  • Page 55: Figure 4.2 External Dimensions (Mp Model)

    The value marked with (*) indicates the dimension between mounting holes on the bottom face. Figure 4.2 External dimensions (MP model) C141-E134-01EN 4 - 3...

  • Page 56: Mounting

    4.1.2 Mounting The permissible orientations of the IDD are shown in Figure 4.5, and the tolerance of the angle is 5° from the horizontal plane. (a) Horizontal –1 (d) Vertical –2 4.1.3 Notes on mounting Mounting frame structure Special attention must be given to mount the IDD disk enclosure (DE) as follows. Use the frame with an embossed structure, or the like.

  • Page 57: Figure 4.4 Mounting Frame Structure

    Must be handled on an anti-static mat. 6.35 or less Figure 4.4 Limitation of side-mounting Mount the IDD using the 4 screw holes at the both ends on the both sides as shown in Figure 4.5. Do not use the center hole by itself. In case of using the center hole, it must be used in combination with 2 holes on both ends.

  • Page 58: Figure 4.6 Surface Temperature Measurement Points

    Environmental temperature Temperature condition at installed in a cabinet is indicated with ambient temperature measured 3 cm from the disk drive. At designing the system cabinet, consider following points. Make a suitable air flow so that the DE surface temperature does not exceed 55°C. Cool the PCA side especially with air circulation inside the cabinet.

  • Page 59: Figure 4.7 Service Clearance Area

    [Surface P] Cable connection Figure 4.7 External magnetic field The drive should not be installed near the ferromagnetic body like a speaker to avoid the influence of the external magnetic field. Leak magnetic flux The IDD uses a high performance magnet to achieve a high speed seek. Therefore, a leak magnetic flux at surface of the IDD is large.

  • Page 60: Power Supply Requirements

    Power Supply Requirements Allowable input voltage and current The power supply input voltage measured at the power supply connector pin of the IDD (receiving end) must satisfy the requirement given in Subsection 2.1.3. (For other requirements, see Items (4) and (5) below.) Current waveform (reference) Figure 4.8 shows the waveform of +12 VDC.

  • Page 61: Figure 4.10 Power On/Off Sequence (2)

    Figure 4.9 c) In a system which does not use the terminating resistor power supply signal (TERMPWR) on the SCSI bus, the requirements for +5 VDC given in Figure 4.10 must be satisfied between the IDD and the SCSI device with the terminating resistor circuit. SCSI devices with the terminating resistor...

  • Page 62: Figure 4.12 Ac Noise Filter (Recommended)

    Sequential starting of spindle motors After power is turned on to the IDD, a large amount of current flows in the +12 VDC line when the spindle motor rotation starts. Therefore, if more than one IDD is used, the spindle motors should be started sequentially using one of the following procedures to prevent overload of the power supply unit.

  • Page 63: Connection Requirements

    Connection Requirements 4.3.1 68 pin connector 16-bit SCSI model (MP model) Connectors Figures 4.13 show the locations of connectors and terminals on the 68 pin connector type 16-bit SCSI (MP) model. Power supply connector SCSI connector External operator panel connector Power supply connector (CN1)

  • Page 64: Figure 4.14 16-Bit Scsi Interface Connector

    The tolerance is ±0.127 mm (0.005 inch) unless otherwise specified Figure 4.14 16-bit SCSI interface connector b. Power supply connector Figure 4.15 shows the shape and the terminal arrangement of the output connector of DC power supply. Figure 4.15 Power supply connector (16-bit SCSI model) SG terminal The IDD is not provided with an SG terminal (fasten tab) for DC grounding.

  • Page 65: Figure 4.16 External Operator Panel Connector (Cn1)

    Connector for external operator panel Connector for 16-bit SCSI external operator panel CN1 provides connector for the external operator panel other than the SCSI bus as shown in Figure 4.16. Also, a connector for the external operator panel are provided on the IDD as shown in Figure 4.17.

  • Page 66: Figure 4.17 External Operator Panel Connector (Cn2)

    Figure 4.17 External operator panel connector (CN2) 4 - 14 C141-E134-01EN...

  • Page 67: Figure 4.18 16-Bit Scsi Id External Input

    External operator panel connector Signals a. 16-bit SCSI –ID3, –ID2, –ID1, –ID0: Input signals (CN1-A1, A3, A5, A7 pin and CN2-02, 04, 06, 08 pin) These signals are used for providing switches to set the SCSI ID of the IDD externally. Figure 4.18 shows the electrical requirements.
  • Page 68 b. Fault LED: Output signal (CN1-A2 pin) The IDD indicates that the write-protect status is in effect (CN1-A12 is connected to the GND, or the CN2-9 and CN2-10 are short-circuited.) A signal for driving the LED is output. 74LS06 or equivalent This signal is temporarily driven at the GND level when the micro program reads the SCSI ID immediately after the power supply to the IDD has been switched on (it is possible to set up the SCSI ID by...

  • Page 69: Figure 4.19 Output Signal For External Led

    Figure 4.19 Output signal for external LED e. –WTP: Input signal (CN1-A12 and CN2-9, 10 pin) By connecting the CN1-A12 and CN2-10 pins to the GND, writing operations into the IDD disc media are set to disable. C141-E134-01EN 4 - 17...

  • Page 70: Figure 4.20 Scsi Cables Connection

    Cable connection requirements The requirements for cable connection between the IDD, host system, and power supply unit are given in Figure 4.20. Recommended components for connection are listed in Table 4.2. Figure 4.20 SCSI cables connection 4 - 18 External operator panel (example) C141-E134-01EN...

  • Page 71: Sca2 Type Scsi Model (Mc Model)

    4.3.2 SCA2 type SCSI model (MC model) Connectors Figure 4.21 shows the locations of connectors on the SCA2 type SCSI model. SCSI connector (including power supply connector) SCSI connector (CN1) Figure 4.21 Connectors location of MC model SCSI connector and power supply connector a.

  • Page 72: Cable Connector Requirements

    Figure 4.22 SCA2 type SCSI connector Connector for external operator panel This connector is not available for MC model. 4.3.3 Cable connector requirements Table 4.2 lists the recommended components cable connection. 4 - 20 C141-E134-01EN...
  • Page 73 Par number Manufacturer (Size) DHJ-PAC68-2AN DDK UL20528-FRX-68- Fujikura P0.635 Tyco Electronics Tyco Electronics 170148-1 (AWG18 to 24) HIROSE ELECTRIC HIROSE A3B-2630SCC ELECTRIC (AWG26 to 36) FUJITSU TAKAMIZAWA FUJITSU FCN-723J-G/AM TAKAMIZAWA (AWG28) 71780-003 C141-E134-01EN Reference (Figures 4.25 and 4.30) 4 - 21...

  • Page 74: External Operator Panel (Mp Model)

    4.3.4 External operator panel (MP model) A recommended circuit of the external operator panel is shown in Figure 4.23. Since the external operator panel is not provided as an option, this panel must be fabricated at the user site referring to the recommendation if necessary.

  • Page 75: Chapter 5 Installation

    CHAPTER 5 INSTALLATION Notes on Handling Drives Connections Setting Terminals Mounting Drives Connecting Cables Confirming Operations after Installation and Preparation for Use Dismounting Drives Spare Disk Drive This chapter describes the notes on handling drives, connections, setting switches and plugs, mounting drives, connecting cables, confirming drive operations after installation and preparation for use, and dismounting drives.
  • Page 76 Unpackaging a) Use a flat work area. Check that the "This Side Up" sign side is up. Handle the package on soft material such as a rubber mat, not on hard material such as a desk. b) Be careful not to give excess pressure to the internal unit when removing cushions. c) Be careful not to give excess pressure to the PCAs and interface connector when removing the drive from the antistatic bag.

  • Page 77: Connections

    Connections Figure 5.1 shows examples of connection modes between the host system and the IDD. For the 16- bit SCSI, up to 16 devices including the host adapter, IDD, and other SCSI devices can be connected to the SCSI bus in arbitrary combinations. Install a terminating resistor on the SCSI device connected to both ends of the SCSI cable.

  • Page 78: Figure 5.1 Scsi Bus Connections (1 Of 2)

    Connecting more than one IDD (single host) Figure 5.1 Connecting more than one IDD (multi-host) Figure 5.1 5 - 4 SCSI bus connections (1 of 2) SCSI bus connections (2 of 2) C141-E134-01EN...

  • Page 79: Setting Terminals

    Setting Terminals A user sets up the following terminals and SCSI terminating resistor before installing the IDD in the system as required. Setting terminal: CN2 (MP model only) Figures 5.2 shows the setting terminal position. Figures 5.3 shows the allocation and default settings.

  • Page 80: Scsi Id Setting (Mp Model Only)

    Figure 5.3 5.3.1 SCSI ID setting (MP model only) Table 5.1 shows the SCSI ID setting. Refer to Figures 5.2 and 5.3 for terminal positioning and allocation. When the SCSI ID is set using the external operator panel connector CN1, all pins listed in Table 5.1 should be open. If any of pins are shorted, unexpected SCSI ID is set.

  • Page 81: Each Mode Setting (Mp Model Only)

    Table 5.1 SCSI ID Set the SCSI ID so that there are no duplicates between SCSI devices on the same SCSI bus. The priority of SCSI bus use in ARBITRATION phase is determined by SCSI ID as follows: 7 > 6 > 5 > 4 > 3 > 2 > 1 > 0 > 15 > 14 > 13 > 12 > 11 > 10 > 9 > 8 5.3.2 Each mode setting (MP model only) Setting terminator power supply...

  • Page 82: Table 5.4 Write Protect Setting (Mp Model Only)

    Motor start mode Set how to control the starting of the IDD spindle motor according to Table 5.3. This setting only determines the operation mode when the power supply is turned on or the microcode is downloaded. In both modes, stopping or restarting the spindle motor can be controlled by specifying the START/STOP UNIT command.

  • Page 83: Mode Settings

    Table 5.5 Setting of the SCSI interface operation mode (MP model only) Operation mode Follows the DIFFSNS signal level on the SCSI bus Single-Ended mode Setting the bus width of the SCSI interface By establishing a short-circuit between the 13 and 14 CN2 setting terminals, the bus width for the SCSI interface is forcibly set to the 8-bit bus mode.

  • Page 84: Mounting Drives

    Mounting Drives 5.4.1 Check before mounting Reconfirm if the setting terminals are set correctly according to Table 5.8 before mounting the MP model drive in the system cabinet. For setting terminals location, see Section 5.3. The MC model drive does not require the following check. Table 5.8 Setting contents Setting...

  • Page 85: Connecting Cables

    4) When an electric driver is in use, less than device specifications must be used. Connecting Cables Connect the IDD and system with the following cables. See Section 4.3 for further details of the requirements for IDD connector positions and connecting cables. Power cable SCSI cable External operator panel cable (if required for MP model)

  • Page 86: Confirming Operations After Installation And Preparation For Use

    Confirming Operations after Installation and Preparation for use 5.6.1 Confirming initial operations This section describes the operation check procedures after power is turned on. Since the initial operation of the IDD depends on the setting of the motor start mode, check the initial operation by either of the following procedures.

  • Page 87: Checking Scsi Connection

    d) If an error is detected in initial self-diagnosis the LED blinks. In this case, it is recommended to issue the REQUEST SENSE command from the initiator (host system) to obtain information (sense data) for error analysis. The LED lights during the IDD is executing a command. However, in same commands, the lighting time is only an instant.

  • Page 88: Figure 5.4 Checking The Scsi Connection (A)

    Motor starts when power is turned on Figure 5.4 Checking the SCSI connection (A) 5 - 14 C141-E134-01EN...

  • Page 89: Figure 5.5 Checking The Scsi Connection (B)

    Motor starts by START/STOP command * Executing time: about 60 seconds Figure 5.5 Checking the SCSI connection (B) C141-E134-01EN 5 - 15...

  • Page 90: Formatting

    Checking at abnormal end a) When sense data can be obtained with the REQUEST SENSE command, analyze the sense data and retry recovery for a recoverable error. Refer to Chapter 5 of SCSI Logical Interface Specifications for further details. b) Check the following items for the SCSI cable connection: All connectors including other SCSI devices are connected correctly.
  • Page 91 b. Format parameter (page code = 3) Specify the number of spare sectors for each cylinder in the "alternate sectors/zone" field and specify the number of tracks for alternate cylinders (= number of alternate cylinders of disk drive heads) in the "alternate tracks/zone" field. It is recommended not to specify values smaller than the IDD default value in this field.

  • Page 92: Setting Parameters

    5.6.4 Setting parameters The user can specify the optimal operation mode for the user system environments by setting the following parameters with the MODE SELECT or MODE SELECT EXTENDED command: Error recovery parameter Disconnection/reconnection parameter Caching parameter Control mode parameter With the MODE SELECT or MODE SELECT EXTENDED command, specify 1 for the "SP"...
  • Page 93 The saved value of the MODE SELECT parameter is assumed as the initial value of each parameter after the power-on, the RESET condition, or the BUS DEVICE RESET message. parameter value temporary (actively) at any timing by issuing the MODE SELECT or MODE SELECT EXTENDED command with specifying "0"...
  • Page 94 Notes: The user can arbitrarily specify the following parameters according to the system requirements: ARRE AWRE The user also can arbitrarily specify parameters other than the above. However, it is recommended to use the default setting in normal operations. Disconnection/reconnection parameters (page code = 2) The following parameters are used to optimize the start timing of reconnection processing to transfer data on the SCSI bus at a read (READ or READ EXTENDED command) or write operation (WRITE, WRITE EXTENDED, or WRITE AND VERIFY command) of the disk.
  • Page 95 Caching parameters The following parameters are used to optimize IDD Read-Ahead caching operations under the system environments. Refer to Chapter 2 of SCSI Logical Interface Specifications for further details. • IC: Initiator control • RCD: Disabling Read-Ahead caching operations • WCE: Write Cache Enable •...

  • Page 96: Dismounting Drives

    a. Control mode parameters • Queue algorithm modifier • QErr: Resume or abort remaining suspended commands after sense pending state • DQue: Disabling tagged command queuing Dismounting Drives Since dismounting the drive to check the setting terminals, change the setting, or change the drive depends on the structure of the system cabinet, the work procedures must be determined in consideration of the requirements specific to the system.

  • Page 97: Chapter 6 Diagnostics And Maintenance

    CHAPTER 6 DIAGNOSTICS AND MAINTENANCE Diagnostics Maintenance Information Operation Check Troubleshooting Procedures This chapter describes diagnostics and maintenance information. Diagnostics 6.1.1 Self-diagnostics The IDD has the following self-diagnostic function. This function checks the basic operations of the IDD. Initial self-diagnostics Online self-diagnostics (SEND DIAGNOSTIC command) Table 6.1 lists the contents of the tests performed with the self-diagnostics.
  • Page 98 Brief test contents of self-diagnostics are as follows. a. Hardware function test This test checks the basic operation of the controller section, and contains following test. RAM (microcode is stored) Peripheral circuits of microprocessor (MPU) Memory (RAM) Data buffer b. Seek test This test checks the positioning operation of the disk drive using several seek modes (2 points seek, 1 position sequential seek, etc.).
  • Page 99 The IDD does not reply to the SCSI bus for up to 2 seconds after the initial self-diagnostics is started. After that, the IDD can accept the I/O operation request correctly, but the received command, except the executable commands under the not ready state (such as INQUIRY, START/STOP UNIT), is terminated with the CHECK CONDITION status (NOT READY [=2]/logical unit is in process of becoming ready [=04-01] or logical unit not ready, initializing command required [=04-02] ) during the interval from the spindle motor becomes stable to the...

  • Page 100: Test Programs

    When an error is detected in the self-diagnostics, the IDD terminates the SEND DIAGNOSTIC command with the CHECK CONDITION status. The INIT should issue the REQUEST SENSE command when the CHECK CONDITION status is posted. The sense data collected by the REQUEST SENSE command indicates the detail information of the error detected in the self-diagnostics.

  • Page 101: Maintenance Information

    Interface (SCSI bus) test The operations of the SCSI bus and data buffer on the IDD are checked with the WRITE BUFFER and READ BUFFER commands. Basic operation test The basic operations of the IDD are checked by executing self-diagnosis with the SEND DIAGNOSTIC command (see Subsection 6.1.1).

  • Page 102: Maintenance Requirements

    Always ground yourself with a wrist strap connected to ground before handling. ESD (Electrostatics Discharge) may cause the damage to the device. To prevent electrical damage to the disk drive, turn the power off before connecting or disconnecting a cable, connector, or plug. Do not remove a PCA.
  • Page 103 The PCA cannot be replaced in the field. The DE cannot be replaced in the field. Service system and repairs Fujitsu has the service system and repair facility for the disk drive. Contact Fujitsu representative to submit information for replacing or repairing the disk drive.

  • Page 104: Maintenance Levels

    Replacement is usually done by the user, retail dealer, distributor, or OEM engineer. Factory maintenance (parts replacement) This replacement can only be done by Fujitsu. Replacement includes maintenance training and OEM engineer support. OEM engineers usually support retail dealers and distributors.

  • Page 105: Revision Numbers

    6.2.4 Revision numbers The revision number of the disk drive is represented with a letter and a number indicated on the revision label attached to the DE. Figure 6.1 shows the revision label format. Indicating revision number at factory shipment When the disk drive is shipped from the factory, the revision number is indicated by deleting numbers in the corresponding letter line up to the corresponding number with = (see Figure 6.2).

  • Page 106: Tools And Test Equipment

    When the revision number is changed after the drive is shipped from the factory, Fujitsu issues "Engineering Change Request/Notice" in which the new revision number is indicated. When the user changes the revision number, the user should update the revision label as described in item (2) after applying the modification.

  • Page 107: Figure 6.3 Test Flowchart

    Start Start self-test by turning the power on Test results OK? Execute an operation test using a host computer or test equipment Test results OK? Continue operation Figure 6.3 Check host system (Table 6.2) Analyze system-related Host system error normal? Replaced or repair disk drive Disk drive...

  • Page 108: Operation Check

    Operation Check 6.3.1 Initial seek operation check If an error is detected during initialization by the initial seek operation check routine at power-on, the LED on the front panel blinks. The spindle motor of the disk drive then stops, and the disk drive is unusable.

  • Page 109: Troubleshooting Procedures

    Troubleshooting Procedures 6.4.1 Outline of troubleshooting procedures This section explains the troubleshooting procedures for disk drive errors. Depending on the maintenance level, analyze the error to detect a possibly faulty part (disk drive, or disk drive part). Full-scale troubleshooting is usually required if the error cause is not known. If the error cause is clear (e.g., abnormal noise in disk enclosure or burning of a PCA), troubleshooting is straightforward.

  • Page 110: Table 6.2 System-Level Field Troubleshooting

    Table 6.2 Item DC power cable Check that the power cable is correctly connected to the disk drive and power supply unit. AC and DC power level Check that the DC voltage is within the specified range (±5%). Check that the +5 VDC value (pins 3 and 4 of the power connector) is 4.75 to 5.25 VDC.

  • Page 111: Troubleshooting At The Repair Site

    6.4.3 Troubleshooting at the repair site For maintenance at this level, we recommend additional testing of the disk drive and signal checking. The sense data posted from the IDD helps with troubleshooting. This sense data makes the error type clear (functional, mechanical, or electrical error). Chapter 7 error analysis by sense data, and gives supplementary information on finding the error cause (faulty part).

  • Page 112: Troubleshooting With Parts Replacement In The Factory

    6.4.4 Troubleshooting with parts replacement in the factory This manual does not cover troubleshooting at the factory level. 6.4.5 Finding possibly faulty parts Finding possibly faulty parts in the field was explained in Subsection 6.4.2. This manual does not cover finding possibly faulty parts at the factory level. 6 - 16 C141-E134-01EN...

  • Page 113: Chapter 7 Error Analysis

    CHAPTER 7 ERROR ANALYSIS This chapter explains in detail how sense data collected from a disk drive is used for troubleshooting. Sense data reflects an error in the disk drive, and helps with troubleshooting. A sense key, sense code, and subsense code, taken from various sense data are repeated. Also in this chapter, troubleshooting is performed using these three codes.

  • Page 114: Figure 7.1 Format Of Extended Sense Data

    Bit 7 Byte 0 Valid [MSB] Basic [MSB] information SKSV Additional information Detail information Figure 7.1 7 - 2 X‘70’ or X‘71’ (error code) X‘00’ Information X‘28’ (additional sense data length) Command-specific information Sense code Subsense code X‘00’ Sense key-specific information CDB operation code Format of extended sense data C141-E134-01EN...

  • Page 115: Sense Data Analysis

    Sense Data Analysis 7.2.1 Error information indicated with sense data Subsection 7.2.2 onwards explain troubleshooting using sense data. Table 7.1 lists the definition of sense data. For details of sense data, refer to the SCSI Logical Interface Specifications. Table 7.1 Sense data Sense Sense...

  • Page 116: Sense Data (3-0C-03), (4-40-Xx), (4-44-Xx), And (4-C4-Xx)

    7.2.2 Sense data (3-0C-03), (4-40-xx), (4-44-xx), and (4-C4-xx) Sense data (4-03-xx), (4-40-xx), (4-44-xx), and (4-C4-xx) indicate one of the following: A target sector could not be detected using the sector counter. A seek process overran the specified time. A write to a disk terminated abnormally. An error occurred in power-on self-diagnosis.

  • Page 117: Chapter 8 Principle Of Operation

    CHAPTER 8 PRINCIPLE OF OPERATION This chapter explains the general design concepts of the disk drive. It also explains the main parts, sequences, servo control method, and the main electrical circuits of the drive at the block level. Outline The principle of operation of this disk drive can be divided into two parts. The first part explains the mechanical parts of the drive (see Section 8.2).

  • Page 118: Disks

    8.2.1 Disks The disk configuration of each DE is shown in Figure 1.3. The DE for the MAM3367 series contains 4 disks whose external diameter is 70 mm and internal diameter is 25 mm. The DE for the MAM3184 series contains 2 disks whose external diameter is 70 mm and internal diameter is 25 mm.

  • Page 119: Circuit Configuration

    Circuit Configuration Figure 8.1 shows the circuit configuration of IDD. Read/write circuit The read/write circuit consists of 2 high performance LSIs, Read Channel and Head Preamp, which perform reading and writing data. 32/34 Modified Extended EPRML (MEEPRML) is adopted as recording method, which realizes high density recording. Servo circuit Voice coil motor position/speed control is carried out by a closed loop servo system and carries out feedback control based on servo information recorded on the data surface.

  • Page 120: Figure 8.1 Circuit Configuration

    Figure 8.1 Circuit configuration 8 - 4 C141-E134-01EN...

  • Page 121: Power-On Sequence

    Power-On Sequence Figure 8.2 shows the operation sequence of the IDD at power-on. The processes shown in this figure are explained below: 1) After the power is turned on, the IDD executes self-diagnosis 1 (MPU bus test, internal register write/read test, and work RAM write/read test). 2) When self-diagnosis 1 terminates successfully, the IDD activates the spindle motor when the motor start mode is set (SW1 is on;...

  • Page 122: Factory-Calibration

    Factory-Calibration Factory calibration is intended to correct errors in the mechanisms and circuits and maintain stable seek, read or write operation. External force adjustment Even if the actuator stops at a fixed position, disturbing forces such as an FPC force and air movement caused by disk rotation are exerted.

  • Page 123: Read/Write Circuit

    Read/Write Circuit The write/read circuit consists of a head IC unit (in DE), write circuit, read circuit, and interface circuit. Figure 8.3 is a block diagram of the read/write circuit. 8.6.1 Head IC The head IC is mounted inside the DE. The head IC has a preamplifier and a write current driver, and has a write error detection function.

  • Page 124: Figure 8.3 Block Diagram Of Read-Write Circuit

    Figure 8.3 Block diagram of read-write circuit 8 - 8 C141-E134-01EN...

  • Page 125: Read Circuit

    8.6.3 Read circuit After fixing the data output from the head IC to a certain level by Automatic Gain Control (AGC), the Read circuit converts the waveform digitally by Analog to Digital Converter (ADC) circuit via analog filter circuit. And then, after equalization by Finite Impulser Response filter (FIR filter), being converted to logic signal by Viterbi detection circuit, convert into NRZ data by 32/34 decoding circuit, and then the Read circuit sends the data to buffer memory.

  • Page 126: Servo Format

    Data Read Head Servo Head Channel Demodulator bus8 Notes: DSP controls actuator servo system. MCU controls spindle servo system. Figure 8.4 Processor-ASIC (Processor-application specific IC) A DSP controls the spindle motor and the voice coil motor. The SCSI sends an instruction to the DSP through the SCSI control MCU via drive interface.
  • Page 127 1) Dead space The dead space is at the innermost position of a disk. At spindle start and stop, the head is in contact with this area of the disk. 2) Inner guard band (IGB) IGB is located in an inner position of a disk. IGB is used to detect that actuator operation has exceeded the ordinary seek operation range.

  • Page 128: Servo Frame Format

    4) Gray code area The gray code is an encoded area which includes the head number, servo sector number and cylinder information as gray code. information embedded as a gray code pattern. 5) Position area Information for recognizing head position is recorded in the position area. Head position in cylinder unit is recognized by using the cylinder information in the gray code area, and head position under one cylinder (resolution) is recognized by using the information in the position area.

  • Page 129: Voice Coil Motor Control

    2) In the next timing phase of 1) above, the DSP creates a rotating magnetic field. The motor rotates from a low rotational frequency up to about 100 min synchronization control. 3) When the motor reaches a high rotational frequency, a counter-electromotive voltage (back EMF) is generated.
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  • Page 131: Appendix Alocations Of Connectors And Setting Terminals

    APPENDIX A LOCATIONS OF CONNECTORS AND SETTING TERMINALS Locations of Connector (MC model) Locations of Connectors and Setting Terminals (MP model) This appendix shows the locations of connectors and setting terminals. C141-E134-01EN A - 1...

  • Page 132: Locations Of Connector (Mc Model

    Locations of Connector (MC model) (Bottom view) Pin 41 Pin 80 Pin 1 Pin 40 (Rear view) Figure A.1 Locations of connector (MC model) A - 2 C141-E134-01EN...

  • Page 133: Locations Of Connectors And Setting Terminals (Mp Model

    Locations of Connectors and Setting Terminals (MP model) (Bottom view) Pin A11 Pin A1 Pin1 Pin 1 Pin 34 Pin 35 Pin 68 Power connector (CN1) Pin A12 Pin A2 SCSI connector (CN1) Connector for external operator panel (CN1) (Rear view) Figure A.2 Locations of connectors and setting terminals (MP model) C141-E134-01EN...
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  • Page 135: Appendix Bsetting Terminals

    APPENDIX B SETTING TERMINALS Setting Terminals (MP model) This appendix describes setting terminals. C141-E134-01EN B - 1...

  • Page 136: B.1 Setting Terminals (Mp Model)

    Setting Terminals (MP model) Table B.1 Setting item Pins 9 - 10 7 - 8 5 - 6 SCSI ID (Open) Open (Open) Open (Open) Open (Open) Open (Open) Short (Open) Short (Open) Short (Open) Short Short Open Short Open Short Open Short...

  • Page 137: Appendix Cconnector Signal Allocation

    APPENDIX C CONNECTOR SIGNAL ALLOCATION SCSI Connector Signal Allocation: SCA2 type LVD 16-bit SCSI SCSI Connector Signal Allocation: 68 pin type LVD 16-bit SCSI This appendix describes the connector signal allocation.

  • Page 138: Table C.1 Scsi Connector (Sca2 Type Lvd 16-Bit Scsi): Cn1

    SCSI Connector Signal Allocation: SCA2 type LVD 16-bit SCSI Table C.1 SCSI connector (SCA2 type LVD 16-bit SCSI): CN1 Pin No. Signal +12V (Charge) +12V +12V +12V Reserved (N.C.) Reserved (N.C.) –DB11 –DB10 –DB09 –DB08 –I/O –REQ –C/D –SEL –MSG –RST –ACK –BSY...

  • Page 139: Table C.2 Scsi Connector (68 Pin Type Lvd 16-Bit Scsi): Cn1

    SCSI Connector Signal Allocation: 68 pin type LVD 16-bit SCSI Table C.2 SCSI connector (68 pin type LVD 16-bit SCSI): CN1 Pin No. Signal DB12 DB13 DB14 DB15 DBP1 DB00 DB01 DB02 DB03 DB04 DB05 DB06 DB07 P_CRCA DIFFSNS TERMPWR* TERMPWR* (Reserved) DB08...
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  • Page 141: Appendix Dmodel Names And Product Numbers

    APPENDIX D MODEL NAMES AND PRODUCT NUMBERS Model Names and Product Numbers This appendix lists model names (types) and product numbers. C141-E134-01EN D - 1...

  • Page 142: Model Names And Product Numbers

    Model Names and Product Numbers Table D.1 MAN series model names and product numbers Data block (*1) length Model name SCSI type (at factory (type) shipment) MAM3367MC SCA2, LVD 512B MAM3367MP 68-pin, LVD MAM3184MC SCA2, LVD 512B MAM3184MP 68-pin, LVD (*1) 160 SCSI Note: Only above models are available currently.

  • Page 143: Index

    1-1x-xx 7-4 +12 VDC 4-8 16-bit SCSI 4-11, C-2, C-3 16-bit SCSI ID external input 4-15 16-bit SCSI interface connector 4-12 3-0C-03 7-4 3-1x-xx 7-4 4-40-xx 7-4 4-44-xx 7-4 4-C4-xx 7-4 5-2x-xx 7-4 5-3D-00 7-4 5-90-00 7-4 68-pin connector 16-bit SCSI model 4-11 68-pin type LVD C-3 8-bit SCSI/16-bit SCSI 1-2 AC noise filter 4-10...
  • Page 144 data space 3-1 DC ground 4-21 default mode setting 5-9 defective block slipping 1-4 defect list 3-11 defect management 3-11 definition of sense data 7-3 delivery 5-2 diagnosis 1-4 diagnostics 6-1 diagnostic test 6-12 diagnstics and maintenance 6-1 disconnection/reconnection parameter 5-20 disk 1-6, 8-2 disk drive configuration 8-1 disk drive replacement 6-8...
  • Page 145 maintenance level 6-8 maintenance requirement 6-6 MAN series model name and product number MC model 4-19, A-2 MC model outer view 1-5 microcode downloading 1-5 model name and part number 2-1 model name and product number D-1, D-2 MODE SELECT/MODE SELECT EXTENDED command 5-16 mode setting 5-9 motor start mode 5-8...
  • Page 146 sense data analysis 7-3 sense key, sense code, and subsense code 7-1 sequential starting of spindle motor 4-10 service clearance area 4-6 service life 2-6, 6-6 service system and repair 6-7 servo circuit 8-3 servo gain adjustment 8-6 setting bus width of SCSI interface 5-9 setting check list 5-10 setting of SCSI interface operation mode 5-8 setting parameter 5-18...
  • Page 147 FUJITSU LIMITED Storage Products Group 4-1-1 Kamikodanaka, Nakahara-ku, Kawasaki, 211-8588, Japan TEL: 81-44-754-2130 FAX: 81-44-754-8346 FUJITSU COMPUTER PRODUCTS OF AMERICA, INC. 2904 Orchard Parkway, San Jose, California 95134-2009, U.S.A. TEL: 1-408-432-6333 FAX: 1-408-894-1709 FUJITSU CANADA INC. 2800 Matheson Blvd. East, Mississauga, Toronto,...
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  • Page 149 Reader Comment Form We would appreciate your comments and suggestions for improving this publication. Publication No. Rev. Letter Title How did you use this publication? Learning Installing Reference Maintaining What is your overall rating of this publication? Very Good Fair Good Poor Your other comments may be entered here.
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This manual is also suitable for:

Mam3367mc/mpMam3367mc - 36gb scsi hard drive sca2 ultra160 80 pin 15k rpmMam3367mcMam3367mpMam3184mcMam3184mp

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