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Summary of Contents for Fujitsu MAB3091FC Series
- Page 1 MAA3182FC SERIES MAB3091FC, MAB3045FC SERIES MAC3091FC, MAC3045FC SERIES DISK DRIVES FIBRE CHANNEL INTERFACE MAINTENANCE MANUAL C141-F028-01EN...
- Page 2 REVISION RECORD Edition Date published Revised contents Apr., 1998 Specification No.: C141-F028-**EN The contents of this manual is subject to change without prior notice. All Rights Reserved. Copyright © 1998 FUJITSU LIMITED C141-F028-01EN...
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- Page 4 “Important Alert Items” in this manual. Keep this manual handy, and keep it carefully. FUJITSU makes every effort to prevent users and bystanders from being injured or from suffering damage to their property. Use the product according to this manual.
- Page 5 SIGNALING INTERFACE-2 (FC-PH- Standards Institute (ANSI) ANSI X3.272-199X FIBRE CHANNEL ARBITRATED American National LOOP (FC-AL) Standards Institute (ANSI) ANSI X3.269-199X FIBRE CHANNEL PROTOCOL FOR American National SCSI (SCSI-FCP) Standards Institute (ANSI) All Right Reserved, Copyright © 1998 Fujitsu, Limited C141-F028-01EN...
- Page 6 PREFACE This manual explains concerning the MAA3182FC (hereafter, MAA31xxFC), MAB3091FC and MAB3045FC (hereafter, MAB30xxFC), MAC3091FC and MAC3045FC (hereafter, MAC30xxFC) series of 3.5 inch hard disk drives with built-in SCSI controller. This manual gives detailed explanations of device configuration, fault analysis, parts replacement, operation check, adjustment, and hardware operation principles for the disk drives.
- Page 7 CONVENTIONS This manual uses the following conventions for alerts to prevent physical or property damages to users or by standards. DANGER DANGER indicates that personal injury will occur if the user does not perform the procedure correctly. WARNING WARNING indicates that personal injury could occur if the user does not perform the procedure correctly.
- Page 8 Failure of the MAA31xxFC, MAB30xxFC and MAC30xxFC 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.
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- Page 10 Cautions Regarding Safety List of Items with Serious Warnings Serious warnings included in this manual are as follows. Indicates items for which, if the product is not used correctly, there is danger not CAUTION only of minor or mildly severe injury, but also danger of the product itself being damaged or of other users and their property being injured or damaged.
- Page 11 Opening the disk enclosure in the field may cause an irreparable fault. Destruction of Data Save data stored on the disk drive before requesting repair. Fujitsu does not assume responsibility if data is destroyed during servicing or repair. Equipment Damage 1.
- Page 12 Manual System FIBRE • Outline CHANNEL • Specifications PRODUCT • Data Format MANUAL • Installation Conditions • Installation Procedure • Diagnosis and Maintenance FIBRE • Fibre Channel Interface CHANNEL • Command Processing Inteface • Data Buffer Management Specifications • Command Specification •...
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Page 14: Table Of Contents
CONTENTS page CHAPTER 1 SPECIFICATIONS AND EQUIPMENT CONFIGURATION ....1 - 1 Product Specifications ....................1 - 1 Installation Conditions ....................1 - 1 Power Supply Conditions....................1 - 1 Connection Conditions....................1 - 2 Settings........................... 1 - 2 CHAPTER 2 MAINTENANCE AND DIAGNOSIS ............ - Page 15 3.2.1 Error information indicated with sense data ..............3 - 3 3.2.2 Sense data (4-03-xx), (4-40-xx), (4-44-xx), and (4-C4-xx) ..........3 - 4 3.2.3 Sense data (1-1x-xx), (3-1x-xx), and (E-1D-00): Disk read error ........3 - 4 3.2.4 Sense data (5-2x-xx), (5-3D-00), (5-90-00), (B-47-xx), (B-49-00), (B-4D-xx) and (B-4E-00): fibre channel interface error................
- Page 16 FIGURES page Revision label......................... 2 - 5 Indicating revision numbers ................... 2 - 6 Test flowchart......................... 2 - 7 Format of extended sense data..................3 - 2 Head configuration ......................5 - 2 Circuit configuration ...................... 5 - 5 IDD operation sequence at power-on ................5 - 6 Block diagram of read-write circuit ................
- Page 17 TABLES page System-level field troubleshooting ................. 2 - 10 Disk drive troubleshooting ..................... 2 - 11 Definition of sense data ....................3 - 3 List of Model Names/Product Numbers ................. 4 - 2 Algorithm for write precompensation................5 - 10 MAA3182FC write frequency and recording density in each zone ........
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Page 18: Chapter 1 Specifications And Equipment Configuration
CHAPTER 1 SPECIFICATIONS AND EQUIPMENT CONFIGURATION Product Specifications Installation Conditions Power Supply Conditions Connection Conditions Settings This chapter describes concerning the specifications and configuration of the intelligent disk drive. The MAA31xxFC, MAB30xxFC and MAC30xxFC intelligent disk drives (IDD) are high performance, large capacity 3.5 inch fixed magnetic disk drives with a built-in fibre channel controller. -
Page 19: Connection Conditions
Connection Conditions Concerning “Connectors for Connections,”, please refer to 4.3, “Connection Requirements” in the PRODUCT MANUAL (C141-E052EN). Settings Concerning the “MAA31xxFC Series Setting Terminal,” “MAB30xxFC Series Setting Terminal”, “MAC30xxFC Series Setting Terminal,” and “Setting Parameters,” please refer to 5.2, “Settings Terminals” and 5.4 “Confirming Operations after Installation and Preparation for use”... -
Page 20: Chapter 2 Maintenance And Diagnosis
CHAPTER 2 MAINTENANCE AND DIAGNOSIS Maintenance Conditions Operation Check Troubleshooting Procedures This chapter explains disk drive maintenance, diagnosis, operation check, and troubleshooting. This chapter cover the following: • Cautions during ordinary maintenance and troubleshooting • Indication of maintenance levels (field and factory) •... -
Page 21: Maintenance Requirements
CAUTION 1. To discharge static electricity from the human body, touch the frame (grounding) before touching a PCA. This prevents the PCA from being damaged by static electricity. 2. To prevent electrical damage to the disk drive, turn the power off before mounting or removing a PCA or connecting or disconnecting a cable, connector, or plug. - Page 22 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. Generally, the...
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Page 23: Maintenance Levels
CAUTION Save data stored on the disk drive before requesting repair. Fujitsu does not assume responsibility if data is destroyed during servicing or repair. See Section 5.1 for notes on packing and handling when returning the disk drive. For notes on packaging and handling when returning a disk drive, refer to the PRODUCT Manual. -
Page 24: Revision Numbers
(see Figure 2.2). Note: 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 25: Tools And Test Equipment
At shipment Rev. A2 Revising at field Rev. A3 Figure 2.2 Indicating revision numbers 2.1.5 Tools and test equipment Disk drive troubleshooting and repair in the field require only standard hand tools. No special tools or test equipment are required. This manual does not describe the factory-level tools and test equipment. -
Page 26: Test Flowchart
Start Start self-test by turning the power on Check host system Test results OK? (Table 2.1) Analyze system-related Host system Execute an operation error normal? test using a host computer or test equipment Replaced or repair disk drive Test results OK? Disk drive normal? Continue operation... -
Page 27: Operation Check
Operation Check 2.2.1 Initial seek operation check If an error is detected during initialization by the initial seek operation check routine at turning on the Fault LED. The spindle motor of the disk drive then stops, and the disk drive is unusable. -
Page 28: Troubleshooting Procedures
Troubleshooting Procedures 2.3.1 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, recommended spare part, or disk drive part). Full-scale troubleshooting is usually required if the error cause is not known. -
Page 29: Troubleshooting At The Repair Site
Table 2.1 System-level field troubleshooting Item Recommended work AC and DC power level Check that the DC voltage is within the specified range (±5%). Check that the +5 VDC value (pin of the interface connector) is 4.75 to 5.25 VDC. Check that the +12 VDC supply (pin of the interface connector of disk drive) is 11.4 to 12.6 VDC. -
Page 30: Troubleshooting With Parts Replacement In The Factory
Table 2.2 Disk drive troubleshooting Item Recommended action Frequent or repeated seek errors Collect sense data, and see Chapter 3. Replace the disk drive, and check that the test method is correct. If the error recurs, it is likely that the disk drive is normal but the test method is incorrect. - Page 31 This page is intentionally left blank.
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Page 32: Chapter 3 Error Analysis
CHAPTER 3 ERROR ANALYSIS Error Analysis Information Collection Sense Data 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. -
Page 33: Format Of Extended Sense Data
Bit 7 Byte 0 Valid X‘70’ or X‘71’ (error code) X‘00’ Sense key [MSB] Information [LSB] X‘28’ (additional sense data length) Basic [MSB] information Command-specific information [LSB] Sense code Subsense code X‘00’ SKSV Sense key-specific information SCSI ID CDB operation code Additional information Detail information... -
Page 34: Sense Data Analysis
Sense Data Analysis 3.2.1 Error information indicated with sense data Subsection 3.2.2 onwards explain troubleshooting using sense data. Table 3.1 lists the definition of sense data. For details of sense data, refer to the Fibre Channel Logical Interface Specifications. Table 3.1 Definition of sense data Sense data Sense... -
Page 35: Sense Data (4-03-Xx), (4-40-Xx), (4-44-Xx), And (4-C4-Xx)
3.2.2 Sense data (4-03-xx), (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. •... -
Page 36: Sense Data (6-5C-02): Spindle Synchronization Error
3.2.5 Sense data (6-5C-02): Spindle synchronization error Sense data (6-5C-02) indicates that the spindle could not be synchronized or that spindle synchronization was lost. This symptom is caused by an error in the spindle synchronization cable, PCA, or DE. C141-F028-01EN 3 - 5... - Page 37 This page is intentionally left blank.
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Page 38: Chapter 4 Removal And Replacement Procedures
CHAPTER 4 REMOVAL AND REPLACEMENT PROCEDURES Spare Parts Disk Drive Removal This chapter explains how to remove and replace a disk drive. It is assumed that the reader already has a through understanding of the replacement of the whole disk drive. Note the following when removing and replacing a disk drive: •... -
Page 39: List Of Model Names/Product Numbers
Table 4.1 List of Model Names/Product Numbers Total Memory Model Name Capacity Product Number Remark (Model Name) (512 Byte Format Capacity) MAA3182FC 18.2 GB CA01606-B982 1.6-inch height 7,200 rpm, 10 media disks, 19 heads MAB3091FC 9.1 GB CA01606-B582 1-inch height 7,200 rpm, 5 media disks, 10 heads MAB3045FC 4.55 GB... -
Page 40: Disk Drive Removal
Disk Drive Removal Since the method and procedure for dismounting the disk drive for replacement of the drive, etc. depends on the locker structure of the system, etc., the work procedure must be determined in consideration of the requirements specific to the system. This section describes the general procedure and notes on dismounting the drive. - Page 41 This page is intentionally left blank.
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Page 42: Chapter 5 Principle Of Operation
CHAPTER 5 PRINCIPLE OF OPERATION Outline Disk Drive Configuration Circuit Configuration Power-On Sequence Factory-Calibration Read/Write Circuit Servo Control 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. -
Page 43: Disks
5.2.1 Disks Each DE contains disks whose external diameter is 95 millimeters and internal diameter is 25 millimeters. The DE for the MAA3182FC, MAB3091FC, MAC3091FC, MAB3045FC and MAC3045FC contains 10, 5, 5, 3 and 3 disks respectively. Each time disk rotation stops, the read-write heads touch the disk surfaces. Disk surfaces withstand at least 10,000 head touch operations at disk rotation start and stop. -
Page 44: Spindle Mechanism
5.2.3 Spindle mechanism The spindle mechanism consists of a disk stack assembly and a spindle motor. The disk stack assembly is directly driven by the direct drive type DC spindle motor. The rotational frequency of this spindle motor is 7,200 rpm or 10,033 rpm. A counterelectromotive force is generated by the drive current in the spindle motor coil. - Page 45 The DSP accurately controls traffic positioning of each head using servo information on the data surface. Spindle motor drive circuit The spindle motor drive circuit drives the spindle motor. A drive current in the motor coil generates a counter emf. The frequency of the counter emf is compared, by the DSP, with a reference frequency derived by dividing the crystal oscillator frequency.
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Page 46: Circuit Configuration
Figure 5.2 Circuit configuration C141-F028-01EN 5 - 5... -
Page 47: Power-On Sequence
Power-On Sequence Figure 5.3 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 48: 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 49: Write Circuit
5.6.2 Write circuit The write data is converted into the NRZ data (WDT), and is sent, together with the Write clock (WCLK) signal, to the write circuit. The NRZ data is converted into 8/9 RLL code by the encoder circuit, and is written to the disk. 8/9 RLL encoder This disk drive uses the 8/9 RLL recording method. -
Page 50: Block Diagram Of Read-Write Circuit
Figure 5.4 Block diagram of read-write circuit C141-F028-01EN 5 - 9... -
Page 51: Conversion Example Of 8/9 Rll Code
NRZ Data Y8 Y9 8/9RLL Code 8 bits NRZ Data 8/9RLL Code Figure 5.5 Conversion example of 8/9 RLL code Write precompensation Write precompensation is done at write, to correct for the frequency characteristics of the recording disk. Table 5.1 lists the algorithm for write precompensation. Table 5.1 Algorithm for write precompensation Compensatio... -
Page 52: Read Circuit
5.6.3 Read circuit The data output from the head IC is converted to a fixed level. The acquired data is then sent to the sample and hold circuit through the electrical filter circuit. The sample and hold circuit samples data, then the viterbi detection circuit converts the data into a Logic signal (RD). The VFO circuit generates a clock signal synchronized with RD. -
Page 53: Configuration Diagram And Frequency Characteristics Of Electrical Filter Circuit
8/9 RLL decoding circuit The 8/9 RLL decoding circuit decodes the viterbi detection circuit output signal. This decoding circuit reverse converts (scrambles) the pseudorandom pattern (created at write) into NRZ data. The NRZ data is then fed to the upper-level circuit. Sense current setup circuit This disk drive uses MR heads, so the current applied to the heads is controlled by a digital-to- analog converter. -
Page 54: Write Frequency Change Circuit
Figure 5.7 Input/output waveforms of read circuit 5.6.4 Write frequency change circuit This disk drive uses the constant characteristics recording method for high density recording. This recording method is different from the conventional recording method in which the write frequency is fixed. With this new recording method, cylinders are grouped into several zones depending on the drive type. -
Page 55: Maa3182Fc Write Frequency And Recording Density In Each Zone
Table 5.2 MAA3182FC write frequency and recording density in each zone Zone 1040 1,886 2,726 3,561 4,390 5,018 5,917 Cylinder 1,039 1,885 2,725 3,560 4,389 5,017 5916 6538 1F(MFRPS) 26.4 26.4 26.4 26.3 25.5 24.6 23.4 22.5 2F(MFRPS) 158.4 158.4 158.4 157.5 153.0... -
Page 56: Mac30Xxfc Write Frequency And Recording Density In Each Zone
Table 5.4 MAC30xxFC write frequency and recording density in each zone Zone 1,210 1,760 2,560 3,260 3,910 4,310 Cylinder 1,209 1,759 2,559 3,259 3,909 4,309 4,969 1F(MFRPS) 40.8 38.8 38.8 37.9 37.0 36.0 35.4 34.3 2F(MFRPS) 245.0 233.0 233.0 227.5 222.0 216.4 212.6... -
Page 57: Servo Control
Servo Control The servomechanism is controlled using a digital servo technique by the firmware in the digital signal processor (DSP). DPS carries out VCM control. Control of the voice coil motor consists of track-following operation control and seek operation control. Track-following operation is controlled to center the data-head-mounted actuator over the target cylinder for read/write operation. -
Page 58: Servo Format
SPM/VCM driver The power amp drive signal output by the DSP (digital signal processor) is converted to a current for driving the VCM. This consists of a controller which controls the sensor-less spindle motor by detecting the counter electro-motive voltage and a power MOSFET which drives the spindle motor. 5.7.2 Servo format Zone format... -
Page 59: Position Of Servo Track
• Preparation of servo mark detection • 2) Servo mark area Servo mark patterns are written in the servo mark areas and patterns are detected by the length of the DC areas. The servo mark determines the starting point for detecting a position pattern and gray code pattern. -
Page 60: Data-Side Servo Data Format
5.7.3 Data-side servo data format To detect an offset of the data surface against to the servo surface, a servo frame is embedded between the data area on each data surface. The servo demodulator performs the offtrack compensation by demodulating the servo signal on both servo surface and data surface. There are 31 servo frames in one revolution on the data surface. -
Page 61: Spindle Motor Control
5.7.4 Spindle motor control The SCSI control MDU controls the senseless 3-phase spindle motor. It carries out start / normal rotation control and spindle synch control in accordance with commands from the SCSI unit. Activation The SCSI control MPU carries out control of the spindle motor from the stopped condition to normal rotation by the following sequence. -
Page 62: Voice Coil Motor Control
3) Coarse control shortens the time from the start of spindle synchronization control when synchronization is established. The MPU checks the phase difference between the reference signal and index signal. If this phase difference is not within the specified range, the DSP increase the spindle angular frequency to within the range for normal read/write operation. - Page 63 This page is intentionally left blank.
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Page 64: Glossary
GLOSSARY Actuator Sense data A head positioning assembly. The actuator Information generated by a target if an error is consists of a voice coil motor, head arms, and a detected at command end. Sense data is used to servo head which positions the read/write post detailed information about the error. - Page 65 Reconnection Small computer system interface (SCSI) Relinkage of an initiator to a disconnected An input-output interface standardized by the target when a target operation on a SCSI bus is American National Standards Institute (ANSI) needed [Standard number: ANSI X3.131-1986] Ready LED SCSI ID A green light emitting diode mounted on the A physical device address which identifies a...
- Page 66 ABBREVIATION Alternating Current MicroProcessor Unit Analog-to-Digital Converter Most Significant Byte Automatic Gain Control MTBF Mean Time Between Failures ANSI American National Standards MTTR Mean Time To Repair Institute American Wire Gauge No-Return-to-Zero Command Descriptor Block Original Equipment Manufacturer Outer Guard Band Digital-to-Analog Converter Direct Current Disk Enclosure...
- Page 67 46-8-626-6711 FAX: 886-2-717-4644 FUJITSU ITALIA S.p.A. FUJITSU SYSTEMS BUSINESS (MALAYSIA) SDN. BHD. Via Nazario Sauro, 38 20099 Sesto S. Giovanni (MI), ITALY Fujitsu Plaza, 1A, Jalan Tandang 204, P.O. Box 636 Pejabat Pos TEL: 39-2-26294-1 Jalan Sultan FAX: 39-2-26294-201 46770 Petaling Jaya, Selangor Darul Ehsan, Malaysia...
- Page 68 FUJITSU LIMITED Reader Comment Form We would appreciate your comments and suggestions for improving this publication. Publication No. Rev. Letter Title Current Date How did you use this publication? Is the material presented effectively? Learning Sales Installing Fully Well Well...
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