
Contents
About this manual . . . . . . . . . . . . iii
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 2
Safety inspection guide . . . . . . . . . . . . . 3
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . . 4
Laser compliance statement (multilingual
translations) . . . . . . . . . . . . . . . . 19
Chapter 2. Important service
information . . . . . . . . . . . . . . . 25
Strategy for replacing FRUs . . . . . . . . . . 25
Strategy for replacing a hard disk drive or a
solid-state drive . . . . . . . . . . . . . 25
Important notice for replacing a system
board . . . . . . . . . . . . . . . . . 26
How to use error codes . . . . . . . . . . 26
Strategy for replacing FRUs for CTO, special-bid,
and standard models. . . . . . . . . . . . . 26
Product definition . . . . . . . . . . . . 26
FRU identification. . . . . . . . . . . . 27
Chapter 3. General checkout . . . . . 29
What to do first . . . . . . . . . . . . . . . 29
Checkout guide . . . . . . . . . . . . . . . 30
Quick test programs . . . . . . . . . . . 30
UEFI diagnostic program . . . . . . . . . 31
Bootable diagnostic programs . . . . . . . 31
Power system checkout . . . . . . . . . . . 32
Checking the ac power adapter . . . . . . . 32
Checking operational charging . . . . . . . 33
Checking the built-in battery and operational
charging . . . . . . . . . . . . . . . . 33
Checking the coin-cell battery . . . . . . . 34
Chapter 4. Related service
information . . . . . . . . . . . . . . . 35
Recovery overview for the Windows 10 operating
system . . . . . . . . . . . . . . . . . . 35
Resetting your computer . . . . . . . . . . . 35
Using advanced startup options . . . . . . . . 35
Recovering your operating system if Windows 10
fails to start . . . . . . . . . . . . . . . . 36
Creating and using a recovery USB drive . . . . . 36
Passwords. . . . . . . . . . . . . . . . . 37
Power-on password . . . . . . . . . . . 37
Hard disk password . . . . . . . . . . . 37
Supervisor password . . . . . . . . . . . 37
How to remove the power-on password . . . 38
How to remove the hard disk password. . . . 38
Power management . . . . . . . . . . . . . 39
Sleep mode . . . . . . . . . . . . . . 39
Hibernation mode . . . . . . . . . . . . 39
Symptom-to-FRU index . . . . . . . . . . . 40
Numeric error codes . . . . . . . . . . . 40
Error messages . . . . . . . . . . . . . 42
Beep errors. . . . . . . . . . . . . . . 42
No-beep symptoms . . . . . . . . . . . 44
LCD-related symptoms . . . . . . . . . . 44
Intermittent problems . . . . . . . . . . . 44
Undetermined problems . . . . . . . . . 45
Chapter 5. Status indicators . . . . . 47
Chapter 6. Special keys . . . . . . . . 49
Chapter 7. Locations . . . . . . . . . 51
Locating computer controls, connectors, and
indicators . . . . . . . . . . . . . . . . . 51
Front view . . . . . . . . . . . . . . . 51
Left-side view . . . . . . . . . . . . . . 51
Right-side view . . . . . . . . . . . . . 52
Bottom view . . . . . . . . . . . . . . 52
Locating FRUs and CRUs . . . . . . . . . . . 52
Major FRUs and CRUs . . . . . . . . . . 54
LCD FRUs and CRUs . . . . . . . . . . . 56
Connector and cable guide . . . . . . . . 57
Looking up FRU information . . . . . . . . . . 61
Chapter 8. FRU replacement
notices . . . . . . . . . . . . . . . . . 63
Screw notices . . . . . . . . . . . . . . . 63
Retaining serial numbers . . . . . . . . . . . 64
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . . 64
Retaining the UUID. . . . . . . . . . . . 65
Chapter 9. Removing or replacing a
FRU. . . . . . . . . . . . . . . . . . . 67
General guidelines. . . . . . . . . . . . . . 67
Before servicing the computer . . . . . . . . . 68
Disabling the built-in battery . . . . . . . . 68
Remove the microSD card . . . . . . . . . 68
© Copyright Lenovo , 2017 i