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Troubleshooting
Related Manuals for Fujitsu MAY2036RC
Summary of Contents for Fujitsu MAY2036RC
- Page 1 C141-E230-01EN MAY2073RC MAY2036RC HARD DISK DRIVES PRODUCT/MAINTENANCE MANUAL...
- Page 2 In addition, FUJITSU assumes no liability with respect to the application or use of any product 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 June, 2005 Specification No.: C141-E230-**EN C141-E230...
- Page 4 Related Standards Product specifications and functions described in this manual comply with the following ANSI (*1) standards and SFF Committee specifications. Document number Title T10/1236D Rev.20 SCSI Primary Commands-2 (SPC-2) [NCITS.351:2001] T10/996D Rev. 8c SCSI-3 Block Commands (SBC) [NCITS.306:1998] T10/1157D Rev. 24 SCSI Architecture Model-2 (SAM-2) T10/1561D Rev.
- Page 5 Preface This manual describes MAY2073RC and MAY2036RC, 2.5" type hard disk drives with an embedded Serial Attached SCSI (SAS). 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. This manual is written for users who have a basic understanding of hard disk drives and their use in computer systems.
- Page 6 Preface CONVENTIONS USED IN THIS MANUAL MAY2073RC and MAY2036RC disk drives are described as "the hard disk drives (HDDs)", "the disk drive" or "the device" in this manual. Decimal number is represented normally. Hexadecimal number is represented as X'17B9', 17B9h or 17B9H. Binary number is represented as "010".
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Page 7: Important Alert Items
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. Also, damage to the product or other property, may occur if the user does not perform the procedure correctly. - Page 8 (refer to Section 5.1). Diagnostics Data loss Save data stored on the disk drive to other media before requesting repair. Maintenance Fujitsu does not assume responsibility if data is destroyed during servicing or repair. Electreical shock Never touch the HDDs while power-feeding. Damage 1.
- Page 9 MANUAL ORGANIZATION PRODUCT/ 1. General Description MAINTENANCE MANUAL 2. Specifications 3. Data Format (This manual) 4. Installation Requirements 5. Installation 6. Diagnostics and Maintenance 7. Error Analysis INTERFACE 1. Interface SPECIFICATIONS 2. Command Processing 3. Data Buffer Management 4. Command Specifications 5.
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Page 11: Table Of Contents
CONTENTS CHAPTER 1 General Description ..............1-1 Standard Features ..................1-1 Hardware Structure ................. 1-5 System Configuration................1-6 CHAPTER 2 Specifications ................2-1 Hardware Specifications ................. 2-1 2.1.1 Model name and order number ............... 2-1 2.1.2 Function specifications................2-2 2.1.3 Environmental specifications ..............2-4 2.1.4 Error rate .................... - Page 12 Contents 4.1.1 Dimensions ....................4-1 4.1.2 Mounting orientations ................4-2 4.1.3 Notes on mounting ..................4-3 Power Supply Requirements ..............4-7 Connection Requirements ...............4-8 4.3.1 Connector location...................4-8 4.3.2 Interface connector ..................4-9 4.3.3 Ready LED output signal ..............4-11 CHAPTER 5 Installation ................. 5-1 Notes on Handling Drives ...............5-1 Setting......................5-3 5.2.1 Port Address ....................5-3 Mounting Drives..................5-3...
- Page 13 Contents 6.2.4 Revision numbers..................6-7 6.2.5 Tools and test equipment ................ 6-8 6.2.6 Tests ......................6-9 Operation Check..................6-10 6.3.1 Initial seek operation check..............6-10 6.3.2 Operation test ..................6-10 6.3.3 Diagnostic test ..................6-10 Troubleshooting Procedures..............6-11 6.4.1 Outline of troubleshooting procedures..........6-11 6.4.2 Troubleshooting with disk drive replacement in the field ....
- Page 14 Contents Illustrations Figures Figure 1.1 Example of SAS system configuration (Dual port internal cabled environment)..............1-6 Figure 1.2 Example of SAS system configuration (Dual port internal backplane environment) ............... 1-6 Figure 3.1 Cylinder configuration ..............3-2 Figure 3.2 Spare area in cell ................3-4 Figure 3.3 Alternate cylinder.................
- Page 15 Contents Tables Table 2.1 Model names and order numbers..........2-1 Table 2.2 Function specifications ..............2-2 Table 2.3 Environmental/Power requirements ..........2-4 Table 3.1 Format capacity................3-8 Table 4.1 Surface temperature check point and maximum temperature ..4-5 Table 4.2 Interface connector (SAS plug) signal allocation:CN1 ....4-10 Table 6.1 Self-diagnostic functions ..............6-1 Table 6.2...
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Page 17: Chapter 1 General Description
At present, the permissible limits on the use of certain materials specified by the RoHS directive have not been determined. In such cases, we are using the original criteria set by Fujitsu Limited while referring to the restrictions already established by End-of-Life (ELV) Directive or by the national environmental laws of the EU member nations. - Page 18 General Description SAS Standard The HDDs are equipped with a serial attached SCSI (SAS) as a host interface. • Transfer rate: 1.5Gbps, 3.0Gbps • Number of SAS ports: Two • Full-duplex (simultaneous bidirectional data transfer) is supported. SCSI commands can manipulate data through logical block addressing, regardless of the physical characteristics of the disk drive.
- Page 19 1.1 Standard Features When Write Cache is enabled, you should ensure that the cached data is surely flushed to the disk media before you turn off the drive's power. To ensure it, you should issue either the SYNCHRONIZE CACHE command or the STOP UNIT command with specifying “0” to the Immediate bit, and then confirm that the command is surely terminated with the GOOD STATUS.
- Page 20 General Description (14) Defective block slipping A logical data block can be reallocated in a physical sequence by slipping the defective data block at formatting. This results in high speed contiguous data block processing without a revolution delay due to defective data block. (15) High speed positioning A rotary voice coil motor achieves fast positioning with high performance access control.
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Page 21: Hardware Structure
1.1 Standard Features Hardware Structure The HDDs have a disk enclosure (DE) and a printed circuit assembly (PCA). The DE includes heads on an actuator and disks on a spindle motor mounted on the DE. The PCA includes a read/write circuit and a controller circuit. -
Page 22: System Configuration
General Description System Configuration For the Serial Attached SCSI, the ANSI standard defines Point-to-Point technology. Figure 1.1 and Figure 1.2 give examples of the SAS system configuration. Figure 1.1 Example of SAS system configuration (Dual port internal cabled environment) Figure 1.2 Example of SAS system configuration (Dual port internal backplane environment) Port addressing Every device connected with the SAS protocol has a unique address (SAS address). -
Page 23: Chapter 2 Specifications
CHAPTER 2 Specifications Hardware Specifications This chapter describes specifications of the HDDs. Hardware Specifications 2.1.1 Model name and order number Each model has different recording capacities when shipped. Table 2.1 lists the model name and order number. The data format can be changed by reinitializing with the user's system. Table 2.1 Model names and order numbers Capacity... -
Page 24: Function Specifications
Specifications 2.1.2 Function specifications Table 2.2 shows the function specifications of the HDDs. Table 2.2 Function specifications Specification Item MAY2073RC MAY2036RC Formatted capacity/device (*1) 73.5 GB (*2) 36.7 GB (*2) Number of disks Number of heads Number of rotations min (rpm) 10,025 ±... - Page 25 2.1 Hardware Specifications (*3) The seek time is as follows: Seek Difference [4096 Cyl/div] (*4) The start time is the time from power on or start command to when the HDDs are ready, and the stop time is the time for disks to completely stop from power off or stop command. This value indicates in idle mode.
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Page 26: Environmental Specifications
Specifications 2.1.3 Environmental specifications Table 2.3 lists environmental and power requirements. Table 2.3 Environmental/Power requirements Specification Item MAY2073RC MAY2036RC Operating 5 to 55 °C Non-operating –40 to 70 °C Temperature Transport (within a week) –40 to 70 °C (*1) DE surface temperature at 5 to 60 °C operating Gradient... -
Page 27: Error Rate
2.1 Hardware Specifications (*1) For detail condition, see Section 4.1. (*2) Vibration applied to the drive is measured at near the mounting screw hole on the frame as much as possible. (*3) At random seek write/read and default on retry setting with log sweep vibration. (*4) At power-off state after installation Vibration displacement should be less than 2.5 mm. - Page 28 Specifications Mean Time To Repair (MTTR) MTTR is the average time taken by a well-trained service mechanic to diagnose and repair a drive malfunction. The drive is designed for a MTTR of 30 minutes or less. Service life The service life under suitable conditions and treatment is as follows. The service life is depending on the environment temperature.
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Page 29: 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 HDDs. Data Space The HDDs manage the entire data storage area divided into the following three data spaces. •... -
Page 30: Figure 3.1 Cylinder Configuration
Data Format Physics Cylinder System space Cylinder0 Head0 Cylinder0 Head1 Cylinder0 Head (a-1) Zone0 Spare sectors for each cell User space Track Spare sectors for each cell Change for cell Alternate Cell (b-1) Zone1 Zone (X-1) Spare Cylinder Last Cylinder Note: Spare sectors on the last track in each cylinder are not necessarily placed at the end of the track (b-1) - Page 31 3.1 Data Space User space The user space is a storage area for user data. The data format on the user space (the length of data block and the number of data blocks) can be specified with the MODE SELECT or MODE SELECT EXTENDED command.
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Page 32: Alternate Spare Area
Data Format 3.1.2 Alternate spare area The alternate spare area consists of the last track of each cell in the user space and an alternate cylinder allocated to the last cylinder of each zone. The spare area in each cell is placed at the end of the last track as shown in Figure 3.2. These spare sectors are located in the end of the track logically, not necessarily located at the end physically because of track skew or cylinder skew. -
Page 33: Track Format
3.1 Data Space 3.1.3 Track format Physical sector allocation Figure 3.4 shows the allocation of the physical sectors in a track. The length in bytes of each physical sector and the number of sectors per track vary depending on the logical data block length. The unused area (G4) exists at the end of the track in formats with most logical data block lengths. -
Page 34: Sector Format
Data Format Track skew Head Track skew Head skew Head Leading logical sector in head p+1 Figure 3.5 Track skew/head skew The number of physical sectors (track skew factor and head skew factor) corresponding to the skew time varies depending on the logical data block length because the track skew and the head skew are managed for individual sectors. - Page 35 3.1 Data Space Each sector on the track consists of the following fields: Gaps (G1, G2, G3) No pattern is written on the gap field. PLO Sync In this field, pattern X'00' is written. Sync Mark (SM1, SM2) In this field, special pattern is written. This special pattern indicates the beginning of the data field. Data field (DATA1-DATA4) User data is stored in the data field of the sector.
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Page 36: Format Capacity
Data Format 3.1.5 Format capacity The size of the usable area for storing user data on the IDD (format capacity) varies according to the logical data block or the size of the spare sector area. Table 3.1 lists examples of the format capacity when the typical logical data block length and the default spare area are used. -
Page 37: 3.2 Logical Data Block Addressing
3.2 Logical Data Block Addressing Block address of user space The logical data block address number is consecutively assigned to all of the data blocks in the user space starting with 0 to the first data block. The HDDs treat sector 0, track 0, cylinder 0 as the first logical data block. The data block is allocated in ascending order of addresses in the following sequence (refer to Figure 3.5): 1) Logical data blocks are assigned in ascending order of sector number in the same track. -
Page 38: Defect Management
Data Format Defect Management 3.3.1 Defect list Information of the defect location on the disk is managed by the defect list. The following are defect lists which the HDDs manage. • P list (Primary defect list): This list consists of defect location information available at the disk drive shipment and is recorded in a system space. -
Page 39: Figure 3.7 Alternate Block Allocation By Format Unit Command
3.3 Defect Management Alternate block allocation during FORMAT UNIT command execution When the FORMAT UNIT command is specified, the allocation of the alternate block to those defective sectors included in the specified lists (P, G, or D) is continued until all spare sectors in the same cell are used up. -
Page 40: Figure 3.8 Alternate Block Allocation By Reassign Blocks
Data Format If above errors are detected during FORMAT UNIT command, the HDDs allocate the alternate block(s) to the defective data blocks. Reassign procedure itself is the same as one in REASSIGN BLOCKS command. Certification is permitted when DCRT flag is cleared (DCRT flag=0) in FORMAT UNIT command. - Page 41 3.3 Defect Management Automatic alternate block allocation • Automatic alternate block allocation at read operation If the ARRE flag in the MODE SELECT parameter permits the automatic alternate block allocation, the HDDs automatically execute the alternate block allocation and data duplication on the defective data block detected during the READ or READ EXTENDED command.
- Page 42 Data Format Type 2 (Reassignment of write fail sector) 1) Commands to be applied WRITE WRITE EXTENDED FORMAT UNIT WRITE at executing WRITE AND VERIFY 2) Application requirements / processing When WRITE/WRITE EXTENDED command detects any Servo error (e.g. Write offtrack error) and cannot be recovered within pre-determined retry number (specified in Mode Parameter).
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Page 43: 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 Dimensions Figures 4.1 show the dimensions of the HDDs and the location of the mounting screw holes. [Units: mm] Figure 4.1 Dimensions... -
Page 44: Mounting Orientations
Installation Requirements 4.1.2 Mounting orientations The permissible orientations of the HDDs are shown in Figure 4.2, and the tolerance of the angle is ±5° from the horizontal plane. As show in Figure 4.2, the drive can be installed flat on any of its six sides. Inclination from a vertical or horizontal plane should not exceed 5°. -
Page 45: Notes On Mounting
4.1 Mounting Requirements 4.1.3 Notes on mounting Damage Never remove any labels from the drive or deface them in any way. Mounting screw The mounting screws must use M3 × 0.5 metric Mounting frame structure As for a system frame structure mounting the HDDs, the following attentions are required. The frame never touches any components on the PCA of the HDDs. -
Page 46: Figure 4.3 Mounting Frame Structure Example
Installation Requirements Figure 4.3 Mounting frame structure example Vent hole Never cover the vent hole as shown in Figure 4.4. Vent hole Label Figure 4.4 Vent hole location C141-E230... -
Page 47: Figure 4.5 Surface Temperature Measurement Points
4.1 Mounting Requirements Environmental temperature Temperature condition at installed in a cabinet is indicated with ambient temperature measured 30 mm from the disk drive. At designing the system cabinet, consider following points. • Make a suitable air flow so that the DE surface temperature never exceed 60°C. •... -
Page 48: Figure 4.6 Service Clearance Area
Installation Requirements Service clearance area The service clearance area, or the sides which must allow access to the HDDs for installation or maintenance, is shown in Figure 4.6. [Surface X] [Surface Y] • Holes for mounting screw • Interface connection (Both Side) [Surface Z] •... -
Page 49: 4.2 Power Supply Requirements
4.2 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 HDDs (receiving end) must satisfy the requirement given in Subsection 2.1.3. (For other requirements, see Items (4) below.) Current waveform (reference) Figure 4.7 shows the waveform of +12V DC. -
Page 50: Figure 4.8 Ac Noise Filter (Recommended)
Installation Requirements Noise filter To eliminate AC line noise, a noise filter should be installed at the AC input terminal on the HDD power supply unit. The specification of this noise filter is as follows: • Attenuation: 40 dB or more at 10 MHz •... -
Page 51: 4.3 Connection Requirements
4.3 Connection Requirements 4.3.2 Interface connector Figure 4.10 shows the SAS type interface connector (SAS plug) overview. Table 4.2 lists the signal allocation of the SAS plug on the HDDs. Figure 4.10 SAS plug connector overview C141-E230... -
Page 52: Table 4.2 Interface Connector (Sas Plug) Signal Allocation:cn1
Installation Requirements Table 4.2 Interface connector (SAS plug) signal allocation:CN1 Pin No. Signal Description GND for SAS Primary Port SAS Primary Port Receive (positive) signal SAS Primary Port Receive (negative) signal GND for SAS Primary Port SAS Primary Port Transmit (negative) signal SAS Primary Port Transmit (positive) signal GND for SAS Primary Port GND for SAS Secondary Port... -
Page 53: Ready Led Output Signal
4.3 Connection Requirements 4.3.3 Ready LED output signal Figure 4.11 shows a recommended circuit for external LED connection to Ready LED output signal. Figure 4.11 Recommended external circuit for Ready LED output Either +3.3 V or +5 V can be used for external power supply for LED (Vcc). Current limiting resister (R) value need to be adjusted depend on the Vcc voltage. - Page 54 This page is intentionally left blank.
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Page 55: Chapter 5 Installation
CHAPTER 5 Installation Notes on Handling Drives Setting Mounting Drives Checking Operation after Installation and Preparing the HDDs for Use Dismounting Drives Spare Disk Drive This chapter describes the notes on handling drives, setting, mounting drives, confirming drive operations after installation and preparation for use, and dismounting drives. Notes on Handling Drives The items listed in the specifications in Table 2.3 must be strictly observed. - Page 56 Installation 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 PCA and interface connector when removing the drive from the antistatic bag.
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Page 57: Setting
5.2 Setting Setting 5.2.1 Port Address Every device that uses the SAS interface has a unique SAS address, and commands use an SAS address to identify each device for I/O operations. Every HDD is assigned a unique SAS address before shipment from the factory, so setting of an address is not required before the HDDs are used. Mounting Drives 5.3.1 Mounting procedures... -
Page 58: Checking Operation After Installation And Preparing The Hdds For Use
Installation Checking Operation after Installation and Preparing the HDDs for Use 5.4.1 Checking initial operation The procedure for verifying operation after power-on is explained below. Initial diagnosis at the time of power-on: a) When the HDDs are turned on, the Active LED blinks and the HDDs perform the initial self- diagnosis (controller hardware diagnosis). -
Page 59: Formatting
5.4 Checking Operation after Installation and Preparing the HDDs for Use c) Issue the REQUEST SENSE command to collect sense data. When sense data has been collected successfully, perform an analysis to check for recoverable errors, and retry operations for recovery from any such errors. - Page 60 Installation FORMAT UNIT command Initialize entire recording surface of the disk with the FORMAT UNIT command. The FORMAT UNIT command initializes entire surface of the disk using the P lists, verifies data blocks after initialization, and allocates an alternate block for a defect block detected with verification. With initialization, the value "00"...
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Page 61: Setting Parameters
5.4 Checking Operation after Installation and Preparing the HDDs for Use 5.4.3 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: •... - Page 62 Installation Error recovery parameters The following parameters are used to control operations such as HDD internal error recovery: a. Read/write error recovery parameters (page code = 1) Parameter Default value • AWRE: Automatic alternate block allocation at Write 1 (enabled) operation •...
- Page 63 5.4 Checking Operation after Installation and Preparing the HDDs for Use Caching parameters The following parameters are used to optimize HDD Read-Ahead caching operations under the system environments. Refer to Chapter 3 “Data Buffer Management” of the Serial Attached SCSI Interface Specifications for further details.
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Page 64: Dismounting Drives
Installation Port control parameters The following parameters are used to control the ready LED signal behavior. Parameter Default value Ready LED meaning Dismounting Drives 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. -
Page 65: 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 HDDs have the following self-diagnostic function. This function checks the basic operations of the HDDs. • Initial self-diagnostics •... - Page 66 Diagnostics and Maintenance 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) •...
- Page 67 6.1 Diagnostics Online self-diagnostics (SEND DIAGNOSTIC command) The INIT can make the HDDs execute self-diagnostics by issuing the SEND DIAGNOSTIC command. The INIT specifies the execution of self-diagnostics by setting 1 for the SelfTest bit on the CDB in the SEND DIAGNOSTIC command and specifies the test contents with the UnitOfl bit.
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Page 68: Test Programs
Diagnostics and Maintenance When an error is detected in the hardware function test, the HDDs post the CHECK CONDITION status for all I/O operation request except the REQUEST SENSE command. The error status is not cleared even if the error information (sense data) is read. Only when the power is turned off or re-turned on, the status can be cleared. -
Page 69: Maintenance Information
See Section 5.1 for notes on packing and handling when returning the disk drive. Data loss Save data stored on the disk drive to other media before requesting repair. Fujitsu does not assume responsibility if data is destroyed during servicing or repair. 6.2.1... -
Page 70: Maintenance Requirements
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 following information... -
Page 71: 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 72: Tools And Test Equipment
(see Figure 6.2). 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 73: Tests
6.2 Maintenance Information 6.2.6 Tests This disk drive can be tested in the following ways: • Initial seek operation check (See Subsection 6.3.1) • Operation test (See Subsection 6.3.2) • Diagnostic test (See Subsection 6.3.3) Figure 6.3 shows the flow of these tests. Start Start self-test by turning the power on... -
Page 74: Operation Check
Diagnostics and Maintenance 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 spindle motor of the disk drive stops, and then the disk drive becomes unusable. For an explanation of the operation check before the initial seek, refer to the Section 5.4. -
Page 75: Troubleshooting Procedures
6.4 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. -
Page 76: Table 6.2 System-Level Field Troubleshooting
Diagnostics and Maintenance Table 6.2 System-level field troubleshooting Item Recommended work DC power level Check that the DC voltage is within the specified range (±5%). For +5V DC, measure the voltage between pin 20 (+5V) of the interface connector and the nearest PCA mounting screw (GND) from the interface connector, and confirm the value is from 4.75 to 5.25 VDC. -
Page 77: Troubleshooting At The Repair Site
6.4 Troubleshooting Procedures 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 HDDs help with troubleshooting. This sense data makes the error type clear (functional, mechanical, or electrical error). -
Page 78: Troubleshooting With Parts Replacement In The Factory
Diagnostics and Maintenance 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. -
Page 79: Chapter 7 Error Analysis
CHAPTER 7 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, additional sense code, and additional sense code qualifier, taken from various sense data are repeated. -
Page 80: Figure 7.1 Format Of Extended Sense Data
Error Analysis 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) [MSB] Basic information Command-specific information [LSB] Additional sense code Additional sense code qualifier X‘00’ SKSV Sense key-specific information Port CDB operation code Additional... -
Page 81: 7.2 Sense Data Analysis
7.2 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. For details of the following sense data, refer to Chapter 5 “Sense Data Error Recovery Methods” of the Interface Specifications. Table 7.1 lists the definition of sense data. -
Page 82: Sense Data (3-0C-03), (4-32-01), (4-40-Xx), (4-C4-Xx), And (4-44-Xx)
Error Analysis 7.2.2 Sense data (3-0C-03), (4-32-01), (4-40-xx), (4-C4-xx), and (4-44-xx) Sense data (3-0C-03), (4-32-01), (4-40-xx), (4-C4-xx), and (4-44-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 83: Glossary
Glossary Additional Sense Code This is a 1-byte code displayed in the sense data and is information which specifies the type of error that was detected. Common Command Set This is the standard form of SCSI logical specifications stipulated by the operations subcommittee of the American National Standards Institute (ANSI) which stipulates functions which a direct access device (magnetic disk, etc.) should support. - Page 84 Glossary Target (TARG) This is the SAS device that executes the input/output operations initiated by the initiator (INIT). In this manual, target is abbreviated "TARG." GL-2 C141-E230...
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Page 85: Abbreviation
Acronyms and Abbreviations Alternating Current Error Correction Code ACKnowledge primitive Enable Early Recovery Asynchoronous Event Notification EVPD Enable Vital Product Data ALTernated (block) ARRE Automatic Read Reallocation Enabled ASCII American Standard Code for Frame Ground Information Interchange FIFO First In First Out ASiGned block FmtData Format Data American Wire Gauge... - Page 86 Acronyms and Abbreviations MicroProcesser Unit Magnetro Resistive Transfer Block Multiple Select Tracks Per Inch TeRMinator NACK Negative ACKnowledge primitive UnitOfl Unit Offline Original Equipment Manufacturer Voice Coil Motor Vital Product Data Vendor Unique P list Primary defect list Parts/Number PBdata Physical Block data PC board Printed Circuit board Printed Circuit Assembly Width...
- Page 87 Index defect management ........3-10 defective block slipping........1-4 delivery ............5-2 actuator ............1-5 diagnosis ............1-4 additional error recovery parameters....5-8 diagnostic............6-1 allowable input voltage and current....4-7 diagnostic test ..........6-10 alternate area........... 3-9 diagnostics and maintenance ......6-1 alternate block allocation......
- Page 88 Index outline of troubleshooting procedure ....6-11 indicating revision number at factory shipment ............ 6-8 initial diagnosis at time of power-on ....5-4 packaging ............5-2 initial seek operation check......6-10 PAD ..............3-7 initial self-diagnostic........6-2 page code = 1 ..........5-8 installation............5-1 page code = 3 ..........5-5 installation requirement ........
- Page 89 Index B-4E-00 ............7-4 tool and test equipment........6-8 E-1D-00............7-4 track format ............ 3-5 sense data analysis .......... 7-3 track skew and head skew....... 3-5 sense key, additional sense code, and troubleshooting at repair site ......6-13 additional sense code qualifier....7-1 troubleshooting procedure ......
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- Page 91 List any errors or suggestions for improvement. Page Line Contents Please send this form to the address below. We will use your comments in planning future editions. Address: Fujitsu Learning Media Limited 37-10 Nishikamata 7-chome Oota-ku Tokyo 144-0051 JAPAN Fax: 81-3-3730-3702...
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