Lenovo ThinkPad L390 Yoga Handleiding
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L390, L390 Yoga, S2 4th Gen, and S2 Yoga
4th Gen
Hardware Maintenance Manual

Note: Before using this information and the product it supports, be sure to read the general information
under Appendix A “Notices” on page 107.
First Edition (December 2018)
© Copyright Lenovo 2018.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration
“GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

Contents
About this manual . . . . . . . . . . . . iii
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 1
Safety inspection guide . . . . . . . . . . . . . 3
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 a hard disk drive or a
solid-state drive . . . . . . . . . . . . . 21
Important notice for replacing a system
board . . . . . . . . . . . . . . . . . 22
How to use error codes . . . . . . . . . . 22
Strategy for replacing FRUs for CTO, special-bid,
and standard models. . . . . . . . . . . . . 22
Product definition . . . . . . . . . . . . 22
FRU identification. . . . . . . . . . . . 23
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 . . . . . . . 28
Power system checkout . . . . . . . . . . . 28
Checking the ac power adapter . . . . . . . 29
Checking operational charging . . . . . . . 29
Checking the battery pack . . . . . . . . . 29
Checking the coin-cell battery . . . . . . . 30
Chapter 4. Related service
information . . . . . . . . . . . . . . . 31
Recovery overview for the Windows 10 operating
system . . . . . . . . . . . . . . . . . . 31
Resetting your computer . . . . . . . . . 31
Using advanced startup options . . . . . . 31
Recovering your operating system if Windows
10 fails to start . . . . . . . . . . . . . 32
Creating and using a recovery USB drive . . . 32
Passwords. . . . . . . . . . . . . . . . . 32
Power-on password . . . . . . . . . . . 33
Hard disk password . . . . . . . . . . . 33
Supervisor password . . . . . . . . . . . 33
How to remove the power-on password . . . 33
How to remove the hard disk password. . . . 34
Power management . . . . . . . . . . . . . 34
Sleep mode . . . . . . . . . . . . . . 34
Hibernation mode . . . . . . . . . . . . 35
Symptom-to-FRU index . . . . . . . . . . . 35
Numeric error codes . . . . . . . . . . . 36
Error messages . . . . . . . . . . . . . 38
Beep errors. . . . . . . . . . . . . . . 38
No-beep symptoms . . . . . . . . . . . 39
LCD-related symptoms . . . . . . . . . . 40
Intermittent problems . . . . . . . . . . . 40
Undetermined problems . . . . . . . . . 41
Chapter 5. Special keys . . . . . . . . 43
Chapter 6. Locations . . . . . . . . . 45
Locating computer controls, connectors, and
indicators . . . . . . . . . . . . . . . . . 45
Front . . . . . . . . . . . . . . . . . 45
Base . . . . . . . . . . . . . . . . . 46
Left-side view. . . . . . . . . . . . . . 46
Right-side view . . . . . . . . . . . . . 47
Bottom view . . . . . . . . . . . . . . 47
Locating FRUs and CRUs . . . . . . . . . . . 47
Major FRUs and CRUs . . . . . . . . . . 49
LCD FRUs and CRUs . . . . . . . . . . . 51
Miscellaneous parts . . . . . . . . . . . 54
Connector and cable guide . . . . . . . . 54
Looking up FRU information . . . . . . . . . . 60
Chapter 7. FRU replacement
notices . . . . . . . . . . . . . . . . . 61
Service tool kit . . . . . . . . . . . . . . . 61
Screw notices . . . . . . . . . . . . . . . 62
Retaining serial numbers . . . . . . . . . . . 62
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . . 63
Retaining the UUID. . . . . . . . . . . . 63
Chapter 8. Removing or replacing a
FRU. . . . . . . . . . . . . . . . . . . 65
General guidelines . . . . . . . . . . . . . . 65
Disabling the built-in battery . . . . . . . . . . 66
1010 MicroSD card . . . . . . . . . . . . . 66
1020 ThinkPad Pen Pro. . . . . . . . . . . . 67
1030 Keyboard . . . . . . . . . . . . . . . 67
© Copyright Lenovo 2018 i
Product specificaties
Merk: | Lenovo |
Categorie: | Laptop |
Model: | ThinkPad L390 Yoga |
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