Preface

This manual describes the MHR2040AT, MHR2030AT, MHR2020AT and MHR2010AT 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 MHR2040AT, MHR2030AT, MHR2020AT and MHR2010AT maintenance requirements, operation verification, and troubleshooting.

CHAPTER 2 Removal and Replacement Procedure

This chapter explains the procedure for removing and replacing MHR2040AT, MHR2030AT, MHR2020AT and MHR2010AT.

Abbreviations

This section lists the abbreviated terms and their full words used in this manual.

Index

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.

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