Contents About this manual . . . . . . . . . . . . iii Supervisor password. . . . . . . . . . . 33 Chapter 1. Safety information. . . . . . 1 How to remove the power-on password . . . 34 How to remove the hard disk password. . . . 34 General safety . . . . . . . . . . . . . . . . 1 Power management . . . . . . . . . . . . . 35 Electrical safety . . . . . . . . . . . . . . . . 1 Sleep mode . . . . . . . . . . . . . . 35 Safety inspection guide. . . . . . . . . . . . . 2 Hibernation mode . . . . . . . . . . . . 35 Handling devices that are sensitive to electrostatic Symptom-to-FRU index . . . . . . . . . . . 35 discharge . . . . . . . . . . . . . . . . . . 3 Numeric error codes . . . . . . . . . . . 36 Grounding requirements . . . . . . . . . . . . 4 Error messages . . . . . . . . . . . . . 37 Safety notices (multilingual translations) . . . . . . 4 Beep errors. . . . . . . . . . . . . . . 38 Chapter 2. Important service No-beep symptoms . . . . . . . . . . . 40 information. . . . . . . . . . . . . . . 21 LCD-related symptoms . . . . . . . . . . 40 Strategy for replacing FRUs . . . . . . . . . . 21 Intermittent problems. . . . . . . . . . . 41 Strategy for replacing a hard disk drive or a Undetermined problems . . . . . . . . . 41 solid-state drive . . . . . . . . . . . . . 21 Chapter 5. Status indicators . . . . . 43 Important notice for replacing a system board . . . . . . . . . . . . . . . . . 22 Chapter 6. Using the special keys. . . 45 How to use error message. . . . . . . . . 22 Strategy for replacing FRUs for CTO, special-bid, Chapter 7. Locations . . . . . . . . . 47 and standard models. . . . . . . . . . . . . 22 Product definition . . . . . . . . . . . . 22 Locating computer controls, connectors, and FRU identification . . . . . . . . . . . . 22 indicators . . . . . . . . . . . . . . . . . 47 Front view . . . . . . . . . . . . . . . 47 Chapter 3. General checkout . . . . . 25 Left-side view. . . . . . . . . . . . . . 48 What to do first . . . . . . . . . . . . . . . 25 Right-side view . . . . . . . . . . . . . 48 Checkout guide. . . . . . . . . . . . . . . 26 Bottom view . . . . . . . . . . . . . . 49 Diagnosing problems. . . . . . . . . . . 26 Locating FRUs and CRUs . . . . . . . . . . . 49 Quick test programs . . . . . . . . . . . 27 Major FRUs and CRUs . . . . . . . . . . 51 UEFI diagnostic program . . . . . . . . . 27 LCD FRUs . . . . . . . . . . . . . . . 53 Bootable diagnostic programs . . . . . . . 27 Miscellaneous parts . . . . . . . . . . . 54 Power system checkout . . . . . . . . . . . 28 Connector and cable guide . . . . . . . . 54 Checking the ac power adapter. . . . . . . 29 Looking up FRU information . . . . . . . . . . 58 Checking the removable battery and the Chapter 8. FRU replacement operational charging . . . . . . . . . . . 29 notices . . . . . . . . . . . . . . . . . 59 Checking the coin-cell battery . . . . . . . 30 Screw notices . . . . . . . . . . . . . . . 59 Chapter 4. Related service Retaining serial numbers . . . . . . . . . . . 60 information. . . . . . . . . . . . . . . 31 Restoring the serial number of the system Recovery information for the Windows 10 unit . . . . . . . . . . . . . . . . . . 60 operating system . . . . . . . . . . . . . . 31 Retaining the UUID. . . . . . . . . . . . 61 Resetting your computer . . . . . . . . . 31 Reading or writing the ECA information. . . . 61 Using advanced startup options . . . . . . 31 Chapter 9. Removing or replacing a Recovering your operating system if Windows FRU. . . . . . . . . . . . . . . . . . . 63 10 fails to start . . . . . . . . . . . . . 32 Creating and using a recovery USB drive . . . 32 General guidelines. . . . . . . . . . . . . . 63 Passwords. . . . . . . . . . . . . . . . . 33 Disabling the built-in battery . . . . . . . . . . 64 Power-on password . . . . . . . . . . . 33 1010 Removable battery . . . . . . . . . . . 64 Hard disk password . . . . . . . . . . . 33 1020 Nano-SIM card. . . . . . . . . . . . . 65 © Copyright Lenovo 2018 i