Home » Fujitsu Manuals » Hard Drives » Fujitsu MAN3367FC » Manual Viewer

Fujitsu MAN3367FC Manual/User Guide - Page 97

Troubleshooting at the repair site, Table 6.3, Disk drive troubleshooting, CAUTION

Add to My Manuals
Save this manual to your list of manuals

Page 97 highlights

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 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). Table 6.3 lists how to detect a faulty disk drive subassembly. This fault finding requires a working host computer or disk drive test equipment to recreate the error conditions. If the detected error cannot be recreated in an ordinary test, disk drive conditions can be changed to force the error to recur. This is done by changing the DC voltage or the ambient temperature of the disk drive. If the error does not recur with changed conditions, the disk drive is not faulty. If no error occurs in the disk drive test, notify the user of the test results, and find out from the user the environment conditions where the disk drive is used. Table 6.3 Disk drive troubleshooting Item Frequent or repeated seek errors Intermittent or nonfatal errors Recommended action Collect sense data, and see Chapter 7. 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. 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. To check performance, change the disk drive conditions by changing the voltage or temperature. If the disk drive error recurs or a possibly faulty part is found by troubleshooting, return the complete disk drive to the factory for repair. A media defect list must be included with a disk drive returned to the factory. If the possibly faulty part is the disk enclosure, return the whole disk drive to the factory for repair. Also if a clear error (erroneous servo track information or noisy drive) is detected in the disk enclosure, return the whole disk drive to the factory. A media defect list must be included with a disk drive returned to the factory. CAUTION Damage Never open the disk enclosure in the field. Opening the disk enclosure in the field may cause an irreparable fault. C141-E133-02EN 6-15

Section	Page
Front Cover	1
FOR SAFE OPERATION	2
Revision History	5
Preface	7
Important Alert Items	11
MANUAL ORGANIZATION	13
REFERENCED STANDARDS	15
CONTENTS	17
CHAPTER 1 General Description	25
1.1 Standard Features	26
1.2 Hardware Structure	29
CHAPTER 2 Specifications	33
2.1 Hardware Specifications	33
2.1.1 Model name and part number	33
2.1.2 Function specifications	34
2.1.3 Environmental specifications	36
2.1.4 Error rate	37
2.1.5 Reliability	37
CHAPTER 3 Data Format	41
3.1 Data Space	41
3.1.1 Cylinder configuration	41
3.1.2 Alternate spare area	44
3.1.3 Track format	45
3.1.4 Sector format	47
3.1.5 Format capacity	49
3.2 Logical Data Block Addressing	50
3.3 Defect Management	51
3.3.1 Defect list	51
3.3.2 Alternate block allocation	51
CHAPTER 4 Installation Requirements	57
4.1 Mounting Requirements	57
4.1.1 External dimensions	57
4.1.2 Mounting	59
4.1.3 Notes on mounting	59
4.2 Power Supply Requirements	63
4.3 Connection Requirements	65
4.3.1 Connector	65
4.3.2 Interface connector	65
CHAPTER 5 Installation	67
5.1 Notes on Handling Drives	67
5.2 Setting	69
5.2.1 Loop ID setting	69
5.2.2 Mode settings	69
5.3 Mounting Drives	70
5.3.1 Mounting procedures	70
5.4 Dismounting Drives	71
5.5 Checking Operation after Installation and Preparing the IDD for Use	72
5.5.1 Checking initial operation	72
5.5.2 Checking connection	73
5.5.3 Formatting	76
5.5.4 Setting parameters	78
5.6 Spare Disk Drive	82
CHAPTER 6 Diagnostics and Maintenance	83
6.1 Diagnostics	83
6.1.1 Self-diagnostics	83
6.1.2 Test programs	86
6.2 Maintenance Information	87
6.2.1 Precautions	87
6.2.2 Maintenance requirements	88
6.2.3 Maintenance levels	90
6.2.4 Revision numbers	91
6.2.5 Tools and test equipment	92
6.2.6 Tests	92
6.3 Operation Check	94
6.3.1 Initial seek operation check	94
6.3.2 Operation test	94
6.3.3 Diagnostic test	94
6.4 Troubleshooting Procedures	95
6.4.1 Outline of troubleshooting procedures	95
6.4.2 Troubleshooting with disk drive replacement in the field	95
6.4.3 Troubleshooting at the repair site	97
6.4.4 Troubleshooting with parts replacement in the factory	98
6.4.5 Finding possibly faulty parts	98
CHAPTER 7 Error Analysis	99
7.1 Error Analysis Information Collection	99
7.1.1 Sense data	99
7.1.2 Sense key, sense code, and subsense code	99
7.2 Sense Data Analysis	101
7.2.1 Error information indicated with sense data	101
7.2.2 Sense data (3-0C-03), (4-40-xx), (4-44-xx), and (4-C4-xx)	102
7.2.3 Sense data (1-1x-xx), (3-1x-xx) and (E-1D-00): Disk read error	102
7.2.4 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 erro	102
CHAPTER 8 Principle of Operation	103
8.1 Outline	103
8.2 Disk Drive Configuration	103
8.2.1 Disks	104
8.2.2 Heads	104
8.2.3 Spindle mechanism	104
8.2.4 Actuator	104
8.2.5 Air filters	104
8.3 Circuit Configuration	105
8.4 Power-On Sequence	107
8.5 Factory-Calibration	108
8.6 Read/Write Circuit	109
8.6.1 Head IC	109
8.6.2 Write circuit	109
8.6.3 Read circuit	111
8.7 Servo Control	111
8.7.1 Servo control circuit	111
8.7.2 Servo format	112
8.7.3 Servo frame format	114
8.7.4 Spindle motor control	114
8.7.5 Voice coil motor control	115
APPENDIX A Locations of Connector	117
A.1 Locations of Connector	118
APPENDIX B Connector Signal Allocation	119
B.1 Interface (FC-SCA) Connector Signal Allocation	120
APPENDIX C Model Names and Product Numbers	121
C.1 Model Names and Product Numbers	122
APPENDIX D Fibre Channel Interface Functions	123
D.1 Fibre Channel Interface Function Specifications	124
Glossary	133
Acronyms and Abbreviations	137
Index	139
READER’S COMMENT FORM	143

Match case Limit results 1 per page

6.4

Troubleshooting Procedures

C141-E133-02EN

6-15

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).

Table 6.3 lists how to detect a faulty disk drive subassembly.

This fault finding requires a working

host computer or disk drive test equipment to recreate the error conditions.

If the detected error cannot be recreated in an ordinary test, disk drive conditions can be changed to

force the error to recur.

This is done by changing the DC voltage or the ambient temperature of the

disk drive.

If the error does not recur with changed conditions, the disk drive is not faulty.

If no error occurs in

the disk drive test, notify the user of the test results, and find out from the user the environment

conditions where the disk drive is used.

Table 6.3

Disk drive troubleshooting

Item

Recommended action

Frequent or repeated seek errors

Collect sense data, and see Chapter 7.

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.

Intermittent or nonfatal errors

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.

To check performance, change the disk drive conditions by changing

the voltage or temperature.

If the disk drive error recurs or a possibly faulty part is found by troubleshooting, return the complete

disk drive to the factory for repair.

A media defect list must be included with a disk drive returned to

the factory.

If the possibly faulty part is the disk enclosure, return the whole disk drive to the factory for repair.

Also if a clear error (erroneous servo track information or noisy drive) is detected in the disk

enclosure, return the whole disk drive to the factory.

A media defect list must be included with a disk

drive returned to the factory.

CAUTION

Damage

Never open the disk enclosure in the field.

Opening the disk enclosure

in the field may cause an irreparable fault.