Fujitsu DISK DRIVES MHL2300AT User manual

C141-F043-01EN
MHL2300AT, MHM2200AT,
MHM2150AT, MHM2100AT
DISK DRIVES
MAINTENANCE MANUAL

C141-F043-01EN
FOR SAFE OPERATION
Handling of This Manual
This manual contains important information for using this product. Read thoroughly before using
the product. Use this product only after thoroughly reading and understanding especially the
section “Important Alert Items” in this manual. Keep this manual handy, and keep it carefully.
FUJITSU makes every effort to prevent users and bystanders from being injured or from suffering
damage to their property. Use the product according to this manual.
IMPORTANT NOTE TO USERS
READ THE ENTIRE MANUAL CAREFULLY BEFORE USING THIS PRODUCT.
INCORRECT USE OF THE PRODUCT MAY RESULT IN INJURY OR DAMAGE TO
USERS, BYSTANDERS OR PROPERTY.
While FUJITSU has sought to ensure the accuracy of all information in this manual, FUJITSU
assumes no liability to any party for any damage caused by any error or omission contained in this
manual, its updates or supplements, whether such errors or omissions result from negligence,
accident, or any other cause. 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.
FUJITSU DISCLAIMS ALL WARRANTIES REGARDING THE INFORMATION
CONTAINED HEREIN, WHETHER EXPRESSED, IMPLIED, OR STATUTORY.
FUJITSU reserves the right to make changes to any products described herein without further
notice and without obligation.
The contents of this manual may be revised without prior notice.
The contents of this manual shall not be disclosed in any way or reproduced in any media without
the express written permission of Fujitsu Limited.
All Rights Reserved, Copyright FUJITSU LIMITED 2000

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C141-F043-01EN
Revision History
(1/1)
Edition Date Revised section (*1)
(Added/Deleted/Altered) Details
01 2000-02-15 — —
*1 Section(s) with asterisk (*) refer to the previous edition when those were deleted.

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C141-F043-01EN i
Preface
This manual describes the MHL2300AT, MHM2200AT, MHM2150AT and MHM2100AT 2.5-inch hard disk
drives with a built-in controller that is compatible with the ATA interface.
This manual explains, in detail, how to maintain 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:
Overview of Manual
CHAPTER 1 Maintenance and Diagnosis
This chapter explains MHL2300AT, MHM2200AT, MHM2150AT and
MHM2100AT maintenance requirements, operation verification, and
troubleshooting.
CHAPTER 2 Removal and Replacement Procedure
This chapter explains the procedure for removing and replacing the MHL2300AT,
MHM2200AT, MHM2150AT and MHM2100AT.
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.
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 hazardous 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 does not perform
the procedure correctly.
This indicates information that could help the user
use the product more efficiently.

Preface
ii C141-F043-01EN
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)
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.
The main alert messages in the text are also listed in the “Important Alert Items.”
Operating Environment
This product is designed to be used in offices or computer rooms.
For details regarding the operating environment of use, refer to the
(Cnnn-Xnnn) and the
(Cnnn-Xnnn).
Attention
Please forward any comments you may have regarding this manual.
To make this manual easier for users to understand, opinions from readers are
needed. Please write your opinions or requests on the Comment at the back of this
manual and forward it to the address described in the sheet.
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-F043-01EN iii
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 predate 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 detergent when the disk drive is
cleaned.
1. Before touching a PCA or the drive, wear a wrist strap
and perform the human body grounding to discharge
static electricity from your body. This will prevent
irreparable damage to the PCA and the head of the drive.
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

Important Alert Items
iv C141-F043-01EN
Task Alert message Page
Maintenance 7. Do not apply excessive force to the cover under any
circumstances. Doing so may cause irreparable damage
to the cover.
1-2
The DE is completely sealed. Do not open the DE in the
field. 1-3
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.
1-4
The disk enclosure must never to be opened in the field.
Opening the disk enclosure may cause irreparable damage. 1-12
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.(Be sure to wear a wrist
strap)
2-2

C141-F043-01EN v
Manual Organization
MHL2300AT, MHM2200AT,
MHM2150AT, MHM2100AT
DISK DRIVES
PRODUCT MANUAL
(C141-E104)
1. Device Overview
2. Device Configuration
3. Installation Conditions
4. Theory of Device Operation
5. Interface
6. Operations
MHL2300AT, MHM2200AT,
MHM2150AT, MHM2100AT
DISK DRIVES
MAINTENANCE MANUAL
(C141-F043)
<This manual>
1. Maintenance and Diagnosis
2. Removal and Replacement Procedure

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C141-F043-01EN vii
Contents
CHAPTER 1 Maintenance and Diagnosis.....................................................1-1
1.1 Maintenance 1-2
1.1.1 Rules for maintenance 1-2
1.1.2 Maintenance requirements 1-2
1.1.3 Maintenance levels 1-5
1.1.4 Disk drive revision number 1-6
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 2-2
2.2 Disk Drive Removal 2-2

Contents
viii C141-F043-01EN
Illustrations
Figures
Figure 1.1 Disk drive revision number label 1-6
Figure 1.2 Display of disk drive revision number 1-7
Figure 1.3 Test flowchart 1-8
Tables
Table 1.1 Status register contents 1-9
Table 1.2 Disposition for error register contents 1-9
Table 1.3 System level and field troubleshooting 1-11
Table 2.1 Model and parts numbers 2-2

C141-F043-01EN 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 Maintenance and Diagnosis
1-2 C141-F043-01EN
1.1 Maintenance
1.1.1 Rules for maintenance
The following cautions must be observed 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 detergent when the disk drive is cleaned.
The following cautions must be observed to avoid damaging the disk drive during
troubleshooting and maintenance.
1. Before touching a PCA or the drive, wear a wrist strap and
perform the human body grounding to discharge static
electricity from your body. This will prevent irreparable
damage to the PCA and the head of the drive.
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.
7. Do not apply excessive force to the cover under any
circumstances. Doing so may cause irreparable damage to the
cover.
1.1.2 Maintenance requirements
(1) Preventive maintenance
The disk drive needs no preventive maintenance, not even the air filter needs to be
changed.

Maintenance and Diagnosis 1.1 Maintenance
C141-F043-01EN 1-3
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.
(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

1.1 Maintenance Maintenance and Diagnosis
1-4 C141-F043-01EN
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 GMR (giant MR head) and 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, etc. in the environment for handling the
equipment. The worker should also be physically grounded (e.g.,
wearing a wrist strap).
−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).

Maintenance and Diagnosis 1.1 Maintenance
C141-F043-01EN 1-5
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 of the MHL2300AT, MHM2200AT, MHM2150AT,
MHM2100AT Disk Drives Product Manual.
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 of the MHL2300AT,
MHM2200AT, MHM2150AT, MHM2100AT Disk Drives 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 Maintenance Maintenance and Diagnosis
1-6 C141-F043-01EN
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
(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.
Firmware code/revision
⇐Disk drive revision number

Maintenance and Diagnosis 1.1 Maintenance
C141-F043-01EN 1-7
Figure 1.2 Display of disk drive revision number
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, “Operating test.”)
•Diagnostic test (See Subsection 1.2.2, “Diagnostic test.”)
Figure 1.3 shows the relationship between the test level and troubleshooting.
Tables 1.1 and 1.2 show the check contents.
A2 Revision
Revision number mark when delivered
Revision number change in the field
A3 Revision