Lenovo ThinkPad X21 ThinkPad X20, X21, X22, X23, X24 Hardware Maintenance Manu - Page 3

Contents, Introduction, General descriptions, ThinkPad X20, X21, X22 - specification

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Contents Chapter 1. Introduction 1 Important service information 1 FRU replacement strategy 1 Hard disk drive replacement strategy . . . . . 2 How to use error messages 2 How to read POST error messages 2 Safety notices: multilingual translations 3 Safety information 12 General safety 12 Electrical safety 13 Safety inspection guide 14 Handling electrostatic discharge-sensitive devices 15 Grounding requirements 16 Laser compliance statement 17 Laser radiation 18 Chapter 2. General descriptions 21 Read this first 21 Related service information 24 Service Web site 24 Product recovery program 24 Using Recovery CD 25 Creating a Recovery Repair diskette . . . . . 26 Passwords 26 Power management 28 Checkout guide 32 Testing the computer 34 Detecting system information with PC-Doctor. . . 35 Power system checkout 38 Chapter 3. ThinkPad X20, X21, X22, X23, X24 . . . 39 Product overview 42 Specifications 42 Status indicators 45 Fn key combinations 47 Symptom-to-FRU index 48 Numeric error codes 48 Error messages 50 Beep symptoms 51 LCD-related symptoms 52 Intermittent problems 52 Undetermined problems 53 FRU replacement notices 54 Screw notices 54 Retaining serial numbers 55 Removing and replacing a FRU 57 1010 Battery pack 58 1020 DIMM 59 1030 Backup battery 60 1040 Hard disk drive 61 iii

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Contents
Chapter 1. Introduction
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Important service information
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FRU replacement strategy
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Hard disk drive replacement strategy
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How to use error messages
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How to read POST error messages
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Safety notices: multilingual translations
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Safety information
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General safety
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Electrical safety
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Safety inspection guide
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Handling electrostatic discharge-sensitive devices
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Grounding requirements
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Laser compliance statement
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Laser radiation
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Chapter 2. General descriptions
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Read this first
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Related service information
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Service Web site
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Product recovery program
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Using Recovery CD
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Creating a Recovery Repair diskette
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Passwords
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Power management
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Checkout guide
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Testing the computer
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Detecting system information with PC-Doctor.
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Power system checkout
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Chapter 3. ThinkPad X20, X21, X22, X23, X24 .
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Product overview
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Specifications
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Status indicators
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Fn key combinations
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Symptom-to-FRU index
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Numeric error codes
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Error messages
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Beep symptoms
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LCD-related symptoms
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Intermittent problems
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Undetermined problems
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FRU replacement notices
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Screw notices
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Retaining serial numbers
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Removing and replacing a FRU
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1010 Battery pack
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1020 DIMM
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1030 Backup battery
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1040 Hard disk drive
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iii