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

C141-F024-02EN xi
FIGURES
page
1.1 Disk drive revision number label....................................................................................1 - 5
1.2 Display of disk drive revision number............................................................................ 1 - 6
1.3 Test flowchart.................................................................................................................1 - 8
TABLES
page
1.1 Status register contents...................................................................................................1 - 9
1.2 Disposition for error register contents ............................................................................ 1 - 9
1.3 System level and field troubleshooting........................................................................... 1 - 11
2.1 Model and parts numbers ...............................................................................................2 - 2

C141-F024-02EN 1 - 1
CHAPTER 1 MAINTENANCE AND DIAGNOSIS
1.1 Maintenance
1.2 Operation Confirmation
1.3 Troubleshooting Procedure
This chapter describes the maintenance, diagnosis, operation check, and troubleshooting of the disk
drive. The following are explained:
• Rules for regular maintenance and troubleshooting
• Display of maintenance level (field and factory)
• Display of machine revision number and number change in the field
• Tools and test devices needed for each maintenance level
• Standard testing for each maintenance level
• Recommended procedure for troubleshooting and fault diagnosis
1.1 Maintenance
1.1.1 Rules for maintenance
Obey the following rules to prevent injury during troubleshooting or 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.
Obey the following rules for troubleshooting and maintenance to avoid damaging the disk
drive.

1 - 2C141-F024-02EN
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.
1.1.2 Maintenance requirements
(1) Preventive maintenance
The disk drive needs no preventive maintenance, not even the air filter needs to be changed.
The DE is completely sealed. Do not open the DE in the field.
(2) Service life
In situations where management and handling are correct, the life of the disk drive is five years
when the DE surface temperature is less than 48°C. When the DE surface temperature exceeds
48°C, the life is five years or 20,000 hours of operation, whichever occurs first. For the
measurement point of the DE surface temperature, refer to Section 3.2 in Product Manual.

C141-F024-02EN 1 - 3
(3) Exchangeable parts in field
The PCA and the DE cannot be replaced separately in the field. Replace the whole disk drive.
(4) Service system and repair
Fujitsu Limited has a disk drive service system and repair facility. When making a request for
repair or parts replacement, you should provide related information usually including:
a) Model name of disk drive, part number (P/N), disk drive revision number, manufacture
serial number (S/N), and date of manufacture of the disk drive
b) Circumstances when the fault occurred
• Date of trouble occurred
• System configuration
• Environmental conditions (including temperature, humidity, and voltage)
c) Fault history of the drive
d) Details of the fault
• Description of the fault
• Issued command and specified parameters
• Status (Status/Error register)
• Interval of the fault
• Other information for fault diagnosis
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.
(5) Notes on handling
a. General notes
a) Vibrations and shocks more severe than allowed will cause fatal damage to the device
so be very careful. Be especially careful when unpacking the device.
b) Do not leave the device in a dusty environment.
c) Because the device uses static sensitive CMOS semiconductors take the following
precautions, be careful of the handling on the following points after the device is
unpacked.
• Use an antistatic mat where the device is handled and it is recommended that the
body of the handler be grounded.

1 - 4C141-F024-02EN
• Hold by the DE section, do not directly touch the PCA unit unnecessarily.
b. Unpacking
a) Use a flat workplace, find which side of the pack is up and be careful not to have the
wrong side facing upwards. Do not place the device directly on a hard table, place it
on something soft such as a rubber mat.
b) Be careful not to apply any excessive force to the packed device when removing the
shock absorbing material.
c) When taking the device out of the antistatic bag, be especially careful not to apply any
excessive force to the PCA or to the interface connector section.
d) Never ever remove the DE seal label and screws and the DE cover.
c. Installation
a) When the power is ON, do not change the switch setting, or connecting, or
disconnecting connectors.
b) Do not move the device or disconnect connectors with the power ON or until the disk
drive unit comes to a complete stop after the power is turned OFF (about 30 seconds).
d. Packaging
a) Place the device in an antistatic vinyl bag along with a desiccant (silica gel).
b) It is recommended that you use the shock absorption cushion material and packaging
that contained the device when it was delivered by Fujitsu.
If the same packaging material cannot be used, use a shock absorbent box that will
transmit shocks directly to the device. When using this type of box, adequately
protect the PCA surface and interface connector section.
c) Place a label showing which side is up and clearly stating the notes on handling on
the outside of the packaging.
e. Delivery
a) As a rule, deliver as it is packaged and keep the up side up.
b) If delivering a single drive after it is unpacked, take it only a short distance. Also, use
shock absorbent material to protect it against shock and vibration. Deliver an
unpacked device in either of the allowable packed positions. Refer to Section 3.2 in
Product Manual.

C141-F024-02EN 1 - 5
f. Storage
a) Store in dampproof packaging.
b) Take care that the environmental requirements satisfy the non-operating
environmental specifications described in Section 1.4 in Product Manual.
c) To prevent condensation, do not subject the device to sudden changes of temperature.
1.1.3 Maintenance levels
Because of its compact size and special repair requirements, it is recommended that the whole
disk drive be replaced. This section describes maintenance on two levels.
(1) Field maintenance (disk drive replacement)
• Replacement at the user site.
• Disk drive replacement requires ordinary tools.
• Usually, the user, retailer, seller, or OEM trader will replace the drive.
(2) Factory maintenance (parts replacement)
• Only Fujitsu can perform maintenance at this level.
• This includes maintenance training and assisting other OEM traders. The OEM trader
usually assists the retailer and seller.
• Use the factory level tools and test equipment. This includes recommended spare parts
and repairing or replacing various parts.
1.1.4 Disk drive revision number
The disk drive revision number is a single alphabetic character followed by a single
alphanumeric character. It is stuck on the DE and marked on the revision number label.
Figure 1.1 shows the disk drive revision number label format.
Figure 1.1 Disk drive revision number label
Firmware code/revision
Disk drive revision number

1 - 6C141-F024-02EN
(1) Revision number marking at delivery
The machine revision number is indicated by crossing out up to the relevant number in the
relevant alphabetic character row using = marks (see Figure 1.2).
(2) Revision number change in the field
When a part is replaced in the field or other modifications are made, the machine revision
number may need to be changed. The level is indicated by crossing out the relevant number in
the relevant alphabetic character row using marks (see Figure 1.2).
(3) Firmware code and revision
First 2-digit indicates a firmware code and rest 2-digit indicates its revision.
Note:
For a change of revision number after delivery, Fujitsu issues a "Change Request/Notice"
and the disk drive revision number after the change. When a change is made at the user
site, the revision number level should be changed as described above.
Revision number mark when delivered
Figure 1.2 Display of disk drive revision number
A3 Revision
A2 Revision
Revision number change in the field

C141-F024-02EN 1 - 7
1.1.5 Tools and test equipment
At the field maintenance level, only ordinary hand tools are required for troubleshooting and
repairing the disk drive. Special tools and test equipment is not required.
Factory level tools and test equipment are beyond the scope of this manual.
1.1.6 Self-diagnostics
The disk drive has the following self-diagnostics. These self-diagnostics allow normal basic
operation of an isolated disk drive can be checked.
• Initial self-diagnostics
• Offline self-diagnostics (EXECUTE DRIVE DIAGNOSTIC [DIAGNOSTIC] command)
1.1.7 Test
The disk drive test can be divided into the following three levels.
• Operating test (See Subsection 1.2.1 on Operating test.)
• Diagnostic test (See Subsection 1.2.2 on Diagnostic test.)
Figure 1.3 shows the relationship between the test level and troubleshooting.
Tables 1.1 and 1.2 show the check contents.