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.

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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