Fujitsu MPB3021AT User manual
C141-F024-02EN
MPB3021AT
MPB3032AT
MPB3043AT
MPB3052AT
MPB3064AT
DISK DRIVES
MAINTENANCE MANUAL
C141-F024-02EN i
REVISION RECORD
Edition Date published Revised contents
01 August., 1997
02 March, 1998 All pages revised.
Specification No.: C141-F024-**EN
The contents of this manual is subject to
change without prior notice.
All Rights Reserved.
Copyright 1998 FUJITSU LIMITED
C141-F024-02EN iii
PREFACE
This manual describes the MPB3021AT/MPB3032AT/MPB3043AT/MPB3052AT/MPB3064AT, a
3.5-inch hard disk drive with a BUILT-IN controller that is compatible with the IBM PC-AT interface.
This manual explains, in detail, how to maintenance the disk drives.
This manual assumes that users have a basic knowledge of hard disk drives and their application in
computer systems.
This manual consists of the following two chapters:
Chapter 1 MAINTENANCE AND DIAGNOSTIC
Chapter 2 REMOVAL AND REPLACEMENT PROCEDURE
In this manual, disk drives may be referred to as drives, or devices.
IBM PC-AT is a registered trademark of IBM (International Business Machines Corporation) of the
United States of America.
iv C141-F024-02EN
Conventions for Alert Messages
This manual uses the following conventions to show the alert messages. An alert message consists of
an alert signal and alert statements. The alert signal consists of an alert symbol and a signal word or
just a signal word.
The following are the alert signals and their meanings:
This indicates a hazarous situation likely to result in serious personal
injury if the user does not perform the procedure correctly.
This indicates a hazarous situation could result in personal injury if the
user does not perform the porocedure correctly.
This indicates a hazarous 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 oes not perform the procedure correctly.
This indicates information that could help the user use the product more
efficiently.
In the text, the alert signal is centered, followed below by the indented message. A wider line space
precedes and follows the alert message to show where the alert message begins and ends. The
following is an example:
(Example)
The DE is completely sealed. Do not open the DE in the field.
The main alert messages in the text are also listed in the “Important Alert Items.”
C141-F024-02EN v
LIABILITY EXCEPTION
"Disk drive defects" refers to defects that involve adjustment, repair, or replacement.
Fujitsu is not liable for any other disk drive defects, such as those caused by user misoperation or
mishandling, inappropriate operating environments, defects in the power supply or cable, problems of
the host system, or other causes outside the disk drive.
C141-F024-02EN vii
Important Alert Items
Important Alert Messages
The important alert messages in this manual are as follows:
A hazarous 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 produt or other property, may occur if the
user does not perform the procedure correctly.
Task
Alert message
Page
Maintenance 1. Don't install or remove a PCA or connect or disconnect a
cable or connector plug when the drive is powered. This
may give you an electric shock.
2. Keep away from mechanical assemblies in the unit during
operation. This may cause injuries.
3. Avoid dangerous detergents when cleaning the disk drive.
1-1
1. Before touching a PCA, perform the human body grounding
to discharge static electricity from your body. This will
prevent electrical damage to the PCA.
2. Don't install or remove a PCA or connect or disconnect a
cable or connector plug when the drive is powered. This
will prevent electrical damage to the disk drive.
3. Operating the disk drive with one or more PCA missing will
be unpredictable. Only power the drive with all boards
installed.
4. Avoid any detergent which may cause short circuits when
cleaning assemblies.
5. Keep all vents open opened and unblocked. Avoid other
conditions which may cause circuits to overheat.
6. A ribbon type cable has one line marked. Ensure that this
line is always connected to pin 1 of the cable connector.
1-2
The DE is completely sealed. Do not open the DE in the field. 1-2
When asking for repair, save all data stored in the disk drive
beforehand. Fujitsu Limited is not responsible for any loss of
data during service and repair.
1-3
The disk enclosure must never to opened in the field. Opening
the disk enclosure may cause irreparable damage. 1-12
C141-F024-02ENviii
Task
Alert message
Page
1. Perform any removal after the system power is completely
disconnected. The cable must not be disconnected and the
screws that attach the drive must not be removed with the
power ON.
2. Do not move the drive until it comes to a complete stop
(about 30 s after the power is turned OFF).
3. Perform the human body grounding to discharge any static
electricity from your body.
2-2
C141-F024-02EN ix
CONTENTS
page
CHAPTER 1 MAINTENANCE AND DIAGNOSIS........................................................... 1 - 1
1.1 Maintenance ...................................................................................................................1 - 1
1.1.1 Rules for maintenance....................................................................................................1 - 1
1.1.2 Maintenance requirements..............................................................................................1 - 2
1.1.3 Maintenance levels.........................................................................................................1 - 5
1.1.4 Disk drive revision number ............................................................................................ 1 - 5
1.1.5 Tools and test equipment................................................................................................1 - 7
1.1.6 Self-diagnostics ..............................................................................................................1 - 7
1.1.7 Test.................................................................................................................................1 - 7
1.2 Operation Confirmation..................................................................................................1 - 9
1.2.1 Operation test .................................................................................................................1 - 9
1.2.2 Diagnostic test................................................................................................................1 - 10
1.3 Troubleshooting Procedure............................................................................................. 1 - 10
1.3.1 Troubleshooting procedure.............................................................................................1 - 10
1.3.2 Troubleshooting disk drive replaced in field..................................................................1 - 10
1.3.3 Troubleshooting at factory.............................................................................................. 1 - 12
CHAPTER 2 REMOVAL AND REPLACEMENT PROCEDURE..................................2 - 1
2.1 Spare Parts......................................................................................................................2 - 1
2.2 Disk Drive Removal.......................................................................................................2 - 2
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