IBM A21e Hardware Maintenance Manual - Page 3

Contents, Introduction, General descriptions, ThinkPad A21e - battery

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Contents Introduction 1 Important service information 1 Strategy for replacing FRUs 1 How to use error messages 2 Diskette compatibility matrix 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 16 General descriptions 19 Read this first 19 What to do first 19 Related service information 21 Service Web site 21 Using Recovery CD 21 Passwords 22 Power management 24 Checkout guide 27 Testing the computer 27 Detecting system information with PC-Doctor. . . 29 Power system checkout 29 ThinkPad A21e 33 Product overview 35 Specifications 35 Status indicators 36 FRU Tests 38 Fn key combinations 40 Symptom-to-FRU index 41 Numeric error codes 41 Error messages 44 Beep symptoms 45 No beep symptoms 45 LCD-related symptoms 46 Intermittent problems 46 Undetermined problems 47 FRU replacement notices 47 Screw notices 47 Retaining serial numbers 48 Removing and replacing a FRU 50 1010 Battery pack 51 1020 DIMM 52 1030 Mini PCI adapter 53 1040 Backup battery 55 1050 Hard-disk drive 56 iii

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Contents
Introduction
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Important service information
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Strategy for replacing FRUs
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How to use error messages
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Diskette compatibility matrix
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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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General descriptions
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Read this first
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What to do first:
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Related service information
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Service Web site
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Using Recovery CD
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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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ThinkPad A21e
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Product overview
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Specifications
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Status indicators
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FRU Tests
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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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No 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 Mini PCI adapter
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1040 Backup battery
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1050 Hard-disk drive
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