Lenovo ThinkPad E450c (English) Hardware Maintenance Manual - ThinkPad E450, E - Page 3

Contents About this manual iii Chapter 1. Safety information . . . . . 1 General safety 1 Electrical safety 1 Safety inspection guide 2 Handling devices that are sensitive to electrostatic discharge 3 Grounding requirements 4 Safety notices (multilingual translations) . . . . . 4 Chapter 2. Important service information 19 Strategy for replacing FRUs 19 Strategy for replacing a hard disk drive, a hybrid drive, or a solid-state drive . . . . . 19 Important notice for replacing a system board 20 How to use error message 20 Strategy for replacing FRUs for CTO, special bid model, and standard models 20 Product definition 20 FRU identification 21 Chapter 3. General checkout . . . . . 23 What to do first 23 Checkout guide 24 Lenovo Solution Center 24 Quick test programs 24 UEFI diagnostic program 25 Bootable diagnostic programs 25 Power system checkout 26 Checking the ac power adapter 27 Checking the built-in battery and operational charging 27 Checking the coin-cell battery 28 Chapter 4. Related service information 29 Restoring the factory contents by using the Recovery Disc Set 29 Recovery overview for the Windows 7 operating system 30 Creating and using a recovery media . . . . 31 Performing backup and recovery operations . 31 Using the Rescue and Recovery workspace . 32 Creating and using a rescue medium . . . . 33 Reinstalling preinstalled applications and device drivers 34 © Copyright Lenovo 2014, 2015 Solving recovery problems 35 Recovery overview for the Windows 8.1 operating system 35 Refreshing your computer 35 Resetting your computer to the factory default settings 36 Using the advanced startup options . . . . 36 Recovering your operating system if Windows 8.1 fails to start 36 Creating and using recovery media . . . . . 37 Passwords 38 Power-on password 38 Hard disk password 38 Supervisor password 38 How to remove the power-on password . . . 39 How to remove the hard disk password . . . 39 Power management 40 Screen blank mode (for the Windows 7 operating system only 40 Sleep mode 40 Hibernation mode 40 Symptom-to-FRU index 41 Numeric error codes 42 Error messages 43 Beep symptoms 43 No-beep symptoms 44 LCD-related symptoms 44 Intermittent problems 44 Undetermined problems 45 Chapter 5. Status indicators . . . . . 47 Chapter 6. Function keys 49 Chapter 7. Locations 51 Locating computer controls, connectors, and indicators 51 Front view 51 Bottom view 52 Locating FRUs and CRUs 53 Major FRUs 54 LCD FRUs 56 Miscellaneous parts and other FRUs . . . . 56 Looking up FRU information 57 Chapter 8. FRU replacement notices 59 Screw notices 59 i