IBM 2621421 Hardware Maintenance Manual - Page 5

Contents Preface iii 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 Drive and Diskette Compatibility Matrix 3 Safety Notices (Multi-lingual Translations) . . . . . 4 Safety Information 11 General Safety 11 Electrical Safety 12 Safety Inspection Guide 13 Handling Electrostatic Discharge-Sensitive Devices 14 Grounding Requirements 15 Laser Compliance Statement 16 ThinkPad i Series 1400 Hardware Maintenance Manual (Part I 19 Read This First 20 How to Use Error Messages 20 How to Diagnose Mulitple FRUs 20 What to Do First 20 Screw Notices 22 Power-On and Setup Password 23 Check Procedures 24 Power Systems Check 25 System Board Check 27 Memory Check 27 Keyboard and External Input Device Check . . . 28 Audio Function Check 29 TrackPoint IV Check 29 Diskette Drive Check 30 CD-ROM Drive Check 30 Modem Board Check 31 BIOS Utility 32 Navigating the BIOS Utility 33 Power Management Features 34 Screen Blanking Mode 34 Standby Mode 34 Hibernation Mode 35 Symptom-to-FRU Index 36 Numeric Error Codes and Messages 36 Beep Symptoms 38 No Beep Symptoms 38 Keyboard/TrackPoint-Related Symptoms . . . . 40 LCD-Related Symptoms 40 Indicator-Related Symptoms 41 Power-Related Symptoms 42 Memory-Related Symptoms 42 Contents v