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 . . . . . . . . . . . . . . . 21
Strategy for replacing FRUs . . . . . . . . . . 21
Strategy for replacing an M.2 solid-state
drive . . . . . . . . . . . . . . . . . 21
Important notice for replacing a system
board . . . . . . . . . . . . . . . . . 22
How to use error message . . . . . . . . . 22
Strategy for replacing FRUs for CTO, special-bid,
and standard models. . . . . . . . . . . . . 22
Product definition . . . . . . . . . . . . 22
FRU identification . . . . . . . . . . . . 22
Chapter 3. General checkout . . . . . 25
What to do first . . . . . . . . . . . . . . . 25
Checkout guide . . . . . . . . . . . . . . . 26
Diagnosing problems . . . . . . . . . . . 26
Quick test programs . . . . . . . . . . . 27
UEFI diagnostic program . . . . . . . . . 27
Bootable diagnostic programs . . . . . . . 27
Power system checkout . . . . . . . . . . . 28
Checking the ac power adapter . . . . . . . 29
Checking the battery and operational
charging . . . . . . . . . . . . . . . . 29
Checking the coin-cell battery . . . . . . . 29
Chapter 4. Related service
information . . . . . . . . . . . . . . . 31
Recovery information . . . . . . . . . . . . 31
Resetting your computer . . . . . . . . . 31
Using advanced startup options . . . . . . 31
Recovering your operating system if Windows
10 fails to start . . . . . . . . . . . . . 31
Creating and using a recovery USB drive . . . 32
Passwords. . . . . . . . . . . . . . . . . 33
Power-on password . . . . . . . . . . . 33
Hard disk password . . . . . . . . . . . 33
Supervisor password . . . . . . . . . . . 33
System management password. . . . . . . 34
How to remove the power-on password . . . 34
How to remove the hard disk password. . . . 35
How to remove the system management
password . . . . . . . . . . . . . . . 35
Power management . . . . . . . . . . . . . 36
Sleep mode . . . . . . . . . . . . . . 36
Hibernation mode . . . . . . . . . . . . 36
Symptom-to-FRU index . . . . . . . . . . . 37
Numeric error codes . . . . . . . . . . . 37
Error messages . . . . . . . . . . . . . 39
Beep symptoms . . . . . . . . . . . . . 39
No-beep symptoms . . . . . . . . . . . 41
LCD-related symptoms . . . . . . . . . . 41
Intermittent problems . . . . . . . . . . . 42
Undetermined problems . . . . . . . . . 42
Chapter 5. YOGA Modes (for X1
Yoga) . . . . . . . . . . . . . . . . . . 45
Chapter 6. Special keys . . . . . . . . 47
Chapter 7. Locations . . . . . . . . . 49
Locating computer controls, connectors, and
indicators . . . . . . . . . . . . . . . . . 49
Front . . . . . . . . . . . . . . . . . 49
Base . . . . . . . . . . . . . . . . . 50
Left . . . . . . . . . . . . . . . . . . 51
Right . . . . . . . . . . . . . . . . . 52
Rear view . . . . . . . . . . . . . . . 53
Bottom view . . . . . . . . . . . . . . 54
Locating FRUs and CRUs . . . . . . . . . . . 54
Major FRUs and CRUs (for X1 Yoga) . . . . . 56
Major FRUs and CRUs (for X1 Carbon) . . . . 58
LCD FRUs (for X1 Carbon) . . . . . . . . . 60
Miscellaneous parts and other FRUs . . . . . 61
Connector and cable guide . . . . . . . . 61
Looking up FRU information . . . . . . . . . . 64
Chapter 8. FRU replacement
notices . . . . . . . . . . . . . . . . . 65
Service tool kit . . . . . . . . . . . . . . . 65
Screw notices . . . . . . . . . . . . . . . 65
Retaining serial numbers . . . . . . . . . . . 66
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . . 66
Retaining the UUID. . . . . . . . . . . . 67
Reading or writing the ECA information . . . . 68
© Copyright Lenovo 2019 i
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