Lenovo ThinkPad Yoga 14 (English) Hardware Maintenance Manual - ThinkPad Yoga - 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 26 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 8 and Windows 8.1 operating system 30 Refreshing your computer 30 Resetting your computer to the factory default settings 31 Using the advanced startup options . . . . 31 Recovering your operating system if Windows 8 or Windows 8.1 fails to start 31 Creating and using recovery media . . . . . 32 Using the Windows recovery programs on the Windows 8 operating system 33 Passwords 34 Power-on password 34 Hard disk password 34 Supervisor password 34 How to remove the power-on password . . . 35 How to remove the hard disk password . . . 35 Power management 36 Screen blank mode (for the Windows 7 operating system only 36 Sleep mode 36 Hibernation mode 37 Symptom-to-FRU index 37 Numeric error codes 38 Error messages 39 Beep symptoms 39 No-beep symptoms 40 LCD-related symptoms 40 Intermittent problems 40 Undetermined problems 41 Chapter 5. Status indicators . . . . . 43 Chapter 6. Function keys 45 Chapter 7. Locations 47 Locating computer controls, connectors, and indicators 47 Front view 47 Bottom view 48 Rear view 48 Locating CRUs and FRUs 49 Major CRUs and FRUs 50 LCD FRUs 52 Miscellaneous parts and other FRUs . . . . 53 Looking up FRU information 53 Chapter 8. FRU replacement notices 55 Screw notices 55 Retaining serial numbers 56 Restoring the serial number of the system unit 56 Retaining the UUID 57 © Copyright Lenovo 2014 i